9951 lines
277 KiB
C
9951 lines
277 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
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* Copyright (c) 2011, 2020 by Delphix. All rights reserved.
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* Copyright (c) 2018, Nexenta Systems, Inc. All rights reserved.
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* Copyright (c) 2014 Spectra Logic Corporation, All rights reserved.
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* Copyright 2013 Saso Kiselkov. All rights reserved.
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* Copyright (c) 2014 Integros [integros.com]
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* Copyright 2016 Toomas Soome <tsoome@me.com>
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* Copyright (c) 2016 Actifio, Inc. All rights reserved.
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* Copyright 2018 Joyent, Inc.
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* Copyright (c) 2017, 2019, Datto Inc. All rights reserved.
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* Copyright 2017 Joyent, Inc.
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* Copyright (c) 2017, Intel Corporation.
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* Copyright (c) 2021, Colm Buckley <colm@tuatha.org>
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*/
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/*
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* SPA: Storage Pool Allocator
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*
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* This file contains all the routines used when modifying on-disk SPA state.
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* This includes opening, importing, destroying, exporting a pool, and syncing a
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* pool.
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*/
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#include <sys/zfs_context.h>
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#include <sys/fm/fs/zfs.h>
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#include <sys/spa_impl.h>
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#include <sys/zio.h>
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#include <sys/zio_checksum.h>
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#include <sys/dmu.h>
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#include <sys/dmu_tx.h>
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#include <sys/zap.h>
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#include <sys/zil.h>
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#include <sys/ddt.h>
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#include <sys/vdev_impl.h>
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#include <sys/vdev_removal.h>
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#include <sys/vdev_indirect_mapping.h>
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#include <sys/vdev_indirect_births.h>
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#include <sys/vdev_initialize.h>
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#include <sys/vdev_rebuild.h>
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#include <sys/vdev_trim.h>
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#include <sys/vdev_disk.h>
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#include <sys/vdev_draid.h>
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#include <sys/metaslab.h>
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#include <sys/metaslab_impl.h>
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#include <sys/mmp.h>
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#include <sys/uberblock_impl.h>
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#include <sys/txg.h>
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#include <sys/avl.h>
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#include <sys/bpobj.h>
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#include <sys/dmu_traverse.h>
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#include <sys/dmu_objset.h>
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#include <sys/unique.h>
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#include <sys/dsl_pool.h>
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#include <sys/dsl_dataset.h>
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#include <sys/dsl_dir.h>
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#include <sys/dsl_prop.h>
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#include <sys/dsl_synctask.h>
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#include <sys/fs/zfs.h>
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#include <sys/arc.h>
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#include <sys/callb.h>
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#include <sys/systeminfo.h>
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#include <sys/spa_boot.h>
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#include <sys/zfs_ioctl.h>
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#include <sys/dsl_scan.h>
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#include <sys/zfeature.h>
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#include <sys/dsl_destroy.h>
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#include <sys/zvol.h>
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#ifdef _KERNEL
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#include <sys/fm/protocol.h>
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#include <sys/fm/util.h>
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#include <sys/callb.h>
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#include <sys/zone.h>
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#include <sys/vmsystm.h>
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#endif /* _KERNEL */
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#include "zfs_prop.h"
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#include "zfs_comutil.h"
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/*
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* The interval, in seconds, at which failed configuration cache file writes
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* should be retried.
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*/
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int zfs_ccw_retry_interval = 300;
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typedef enum zti_modes {
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ZTI_MODE_FIXED, /* value is # of threads (min 1) */
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ZTI_MODE_BATCH, /* cpu-intensive; value is ignored */
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ZTI_MODE_SCALE, /* Taskqs scale with CPUs. */
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ZTI_MODE_NULL, /* don't create a taskq */
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ZTI_NMODES
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} zti_modes_t;
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#define ZTI_P(n, q) { ZTI_MODE_FIXED, (n), (q) }
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#define ZTI_PCT(n) { ZTI_MODE_ONLINE_PERCENT, (n), 1 }
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#define ZTI_BATCH { ZTI_MODE_BATCH, 0, 1 }
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#define ZTI_SCALE { ZTI_MODE_SCALE, 0, 1 }
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#define ZTI_NULL { ZTI_MODE_NULL, 0, 0 }
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#define ZTI_N(n) ZTI_P(n, 1)
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#define ZTI_ONE ZTI_N(1)
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typedef struct zio_taskq_info {
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zti_modes_t zti_mode;
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uint_t zti_value;
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uint_t zti_count;
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} zio_taskq_info_t;
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static const char *const zio_taskq_types[ZIO_TASKQ_TYPES] = {
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"iss", "iss_h", "int", "int_h"
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};
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/*
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* This table defines the taskq settings for each ZFS I/O type. When
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* initializing a pool, we use this table to create an appropriately sized
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* taskq. Some operations are low volume and therefore have a small, static
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* number of threads assigned to their taskqs using the ZTI_N(#) or ZTI_ONE
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* macros. Other operations process a large amount of data; the ZTI_BATCH
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* macro causes us to create a taskq oriented for throughput. Some operations
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* are so high frequency and short-lived that the taskq itself can become a
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* point of lock contention. The ZTI_P(#, #) macro indicates that we need an
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* additional degree of parallelism specified by the number of threads per-
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* taskq and the number of taskqs; when dispatching an event in this case, the
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* particular taskq is chosen at random. ZTI_SCALE is similar to ZTI_BATCH,
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* but with number of taskqs also scaling with number of CPUs.
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*
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* The different taskq priorities are to handle the different contexts (issue
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* and interrupt) and then to reserve threads for ZIO_PRIORITY_NOW I/Os that
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* need to be handled with minimum delay.
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*/
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const zio_taskq_info_t zio_taskqs[ZIO_TYPES][ZIO_TASKQ_TYPES] = {
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/* ISSUE ISSUE_HIGH INTR INTR_HIGH */
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{ ZTI_ONE, ZTI_NULL, ZTI_ONE, ZTI_NULL }, /* NULL */
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{ ZTI_N(8), ZTI_NULL, ZTI_SCALE, ZTI_NULL }, /* READ */
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{ ZTI_BATCH, ZTI_N(5), ZTI_SCALE, ZTI_N(5) }, /* WRITE */
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{ ZTI_SCALE, ZTI_NULL, ZTI_ONE, ZTI_NULL }, /* FREE */
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{ ZTI_ONE, ZTI_NULL, ZTI_ONE, ZTI_NULL }, /* CLAIM */
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{ ZTI_ONE, ZTI_NULL, ZTI_ONE, ZTI_NULL }, /* IOCTL */
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{ ZTI_N(4), ZTI_NULL, ZTI_ONE, ZTI_NULL }, /* TRIM */
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};
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static void spa_sync_version(void *arg, dmu_tx_t *tx);
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static void spa_sync_props(void *arg, dmu_tx_t *tx);
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static boolean_t spa_has_active_shared_spare(spa_t *spa);
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static int spa_load_impl(spa_t *spa, spa_import_type_t type, char **ereport);
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static void spa_vdev_resilver_done(spa_t *spa);
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uint_t zio_taskq_batch_pct = 80; /* 1 thread per cpu in pset */
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uint_t zio_taskq_batch_tpq; /* threads per taskq */
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boolean_t zio_taskq_sysdc = B_TRUE; /* use SDC scheduling class */
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uint_t zio_taskq_basedc = 80; /* base duty cycle */
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boolean_t spa_create_process = B_TRUE; /* no process ==> no sysdc */
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/*
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* Report any spa_load_verify errors found, but do not fail spa_load.
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* This is used by zdb to analyze non-idle pools.
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*/
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boolean_t spa_load_verify_dryrun = B_FALSE;
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/*
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* This (illegal) pool name is used when temporarily importing a spa_t in order
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* to get the vdev stats associated with the imported devices.
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*/
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#define TRYIMPORT_NAME "$import"
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/*
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* For debugging purposes: print out vdev tree during pool import.
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*/
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int spa_load_print_vdev_tree = B_FALSE;
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/*
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* A non-zero value for zfs_max_missing_tvds means that we allow importing
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* pools with missing top-level vdevs. This is strictly intended for advanced
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* pool recovery cases since missing data is almost inevitable. Pools with
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* missing devices can only be imported read-only for safety reasons, and their
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* fail-mode will be automatically set to "continue".
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*
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* With 1 missing vdev we should be able to import the pool and mount all
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* datasets. User data that was not modified after the missing device has been
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* added should be recoverable. This means that snapshots created prior to the
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* addition of that device should be completely intact.
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*
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* With 2 missing vdevs, some datasets may fail to mount since there are
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* dataset statistics that are stored as regular metadata. Some data might be
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* recoverable if those vdevs were added recently.
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*
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* With 3 or more missing vdevs, the pool is severely damaged and MOS entries
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* may be missing entirely. Chances of data recovery are very low. Note that
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* there are also risks of performing an inadvertent rewind as we might be
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* missing all the vdevs with the latest uberblocks.
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*/
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unsigned long zfs_max_missing_tvds = 0;
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/*
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* The parameters below are similar to zfs_max_missing_tvds but are only
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* intended for a preliminary open of the pool with an untrusted config which
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* might be incomplete or out-dated.
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*
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* We are more tolerant for pools opened from a cachefile since we could have
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* an out-dated cachefile where a device removal was not registered.
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* We could have set the limit arbitrarily high but in the case where devices
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* are really missing we would want to return the proper error codes; we chose
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* SPA_DVAS_PER_BP - 1 so that some copies of the MOS would still be available
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* and we get a chance to retrieve the trusted config.
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*/
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uint64_t zfs_max_missing_tvds_cachefile = SPA_DVAS_PER_BP - 1;
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/*
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* In the case where config was assembled by scanning device paths (/dev/dsks
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* by default) we are less tolerant since all the existing devices should have
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* been detected and we want spa_load to return the right error codes.
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*/
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uint64_t zfs_max_missing_tvds_scan = 0;
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/*
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* Debugging aid that pauses spa_sync() towards the end.
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*/
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boolean_t zfs_pause_spa_sync = B_FALSE;
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/*
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* Variables to indicate the livelist condense zthr func should wait at certain
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* points for the livelist to be removed - used to test condense/destroy races
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*/
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int zfs_livelist_condense_zthr_pause = 0;
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int zfs_livelist_condense_sync_pause = 0;
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/*
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* Variables to track whether or not condense cancellation has been
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* triggered in testing.
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*/
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int zfs_livelist_condense_sync_cancel = 0;
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int zfs_livelist_condense_zthr_cancel = 0;
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/*
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* Variable to track whether or not extra ALLOC blkptrs were added to a
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* livelist entry while it was being condensed (caused by the way we track
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* remapped blkptrs in dbuf_remap_impl)
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*/
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int zfs_livelist_condense_new_alloc = 0;
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/*
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* ==========================================================================
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* SPA properties routines
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* ==========================================================================
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*/
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/*
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* Add a (source=src, propname=propval) list to an nvlist.
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*/
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static void
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spa_prop_add_list(nvlist_t *nvl, zpool_prop_t prop, char *strval,
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uint64_t intval, zprop_source_t src)
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{
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const char *propname = zpool_prop_to_name(prop);
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nvlist_t *propval;
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VERIFY(nvlist_alloc(&propval, NV_UNIQUE_NAME, KM_SLEEP) == 0);
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VERIFY(nvlist_add_uint64(propval, ZPROP_SOURCE, src) == 0);
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if (strval != NULL)
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VERIFY(nvlist_add_string(propval, ZPROP_VALUE, strval) == 0);
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else
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VERIFY(nvlist_add_uint64(propval, ZPROP_VALUE, intval) == 0);
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VERIFY(nvlist_add_nvlist(nvl, propname, propval) == 0);
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nvlist_free(propval);
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}
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/*
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* Get property values from the spa configuration.
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*/
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static void
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spa_prop_get_config(spa_t *spa, nvlist_t **nvp)
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{
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vdev_t *rvd = spa->spa_root_vdev;
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dsl_pool_t *pool = spa->spa_dsl_pool;
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uint64_t size, alloc, cap, version;
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const zprop_source_t src = ZPROP_SRC_NONE;
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spa_config_dirent_t *dp;
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metaslab_class_t *mc = spa_normal_class(spa);
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ASSERT(MUTEX_HELD(&spa->spa_props_lock));
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if (rvd != NULL) {
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alloc = metaslab_class_get_alloc(mc);
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alloc += metaslab_class_get_alloc(spa_special_class(spa));
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alloc += metaslab_class_get_alloc(spa_dedup_class(spa));
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alloc += metaslab_class_get_alloc(spa_embedded_log_class(spa));
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size = metaslab_class_get_space(mc);
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size += metaslab_class_get_space(spa_special_class(spa));
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size += metaslab_class_get_space(spa_dedup_class(spa));
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size += metaslab_class_get_space(spa_embedded_log_class(spa));
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spa_prop_add_list(*nvp, ZPOOL_PROP_NAME, spa_name(spa), 0, src);
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spa_prop_add_list(*nvp, ZPOOL_PROP_SIZE, NULL, size, src);
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spa_prop_add_list(*nvp, ZPOOL_PROP_ALLOCATED, NULL, alloc, src);
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spa_prop_add_list(*nvp, ZPOOL_PROP_FREE, NULL,
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size - alloc, src);
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spa_prop_add_list(*nvp, ZPOOL_PROP_CHECKPOINT, NULL,
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spa->spa_checkpoint_info.sci_dspace, src);
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spa_prop_add_list(*nvp, ZPOOL_PROP_FRAGMENTATION, NULL,
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metaslab_class_fragmentation(mc), src);
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spa_prop_add_list(*nvp, ZPOOL_PROP_EXPANDSZ, NULL,
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metaslab_class_expandable_space(mc), src);
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spa_prop_add_list(*nvp, ZPOOL_PROP_READONLY, NULL,
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(spa_mode(spa) == SPA_MODE_READ), src);
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cap = (size == 0) ? 0 : (alloc * 100 / size);
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spa_prop_add_list(*nvp, ZPOOL_PROP_CAPACITY, NULL, cap, src);
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spa_prop_add_list(*nvp, ZPOOL_PROP_DEDUPRATIO, NULL,
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ddt_get_pool_dedup_ratio(spa), src);
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spa_prop_add_list(*nvp, ZPOOL_PROP_HEALTH, NULL,
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rvd->vdev_state, src);
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version = spa_version(spa);
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if (version == zpool_prop_default_numeric(ZPOOL_PROP_VERSION)) {
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spa_prop_add_list(*nvp, ZPOOL_PROP_VERSION, NULL,
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version, ZPROP_SRC_DEFAULT);
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} else {
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spa_prop_add_list(*nvp, ZPOOL_PROP_VERSION, NULL,
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version, ZPROP_SRC_LOCAL);
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}
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spa_prop_add_list(*nvp, ZPOOL_PROP_LOAD_GUID,
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NULL, spa_load_guid(spa), src);
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}
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if (pool != NULL) {
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/*
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* The $FREE directory was introduced in SPA_VERSION_DEADLISTS,
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* when opening pools before this version freedir will be NULL.
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*/
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if (pool->dp_free_dir != NULL) {
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spa_prop_add_list(*nvp, ZPOOL_PROP_FREEING, NULL,
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dsl_dir_phys(pool->dp_free_dir)->dd_used_bytes,
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src);
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} else {
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spa_prop_add_list(*nvp, ZPOOL_PROP_FREEING,
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NULL, 0, src);
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}
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if (pool->dp_leak_dir != NULL) {
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spa_prop_add_list(*nvp, ZPOOL_PROP_LEAKED, NULL,
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dsl_dir_phys(pool->dp_leak_dir)->dd_used_bytes,
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src);
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} else {
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spa_prop_add_list(*nvp, ZPOOL_PROP_LEAKED,
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NULL, 0, src);
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}
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}
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spa_prop_add_list(*nvp, ZPOOL_PROP_GUID, NULL, spa_guid(spa), src);
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if (spa->spa_comment != NULL) {
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spa_prop_add_list(*nvp, ZPOOL_PROP_COMMENT, spa->spa_comment,
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0, ZPROP_SRC_LOCAL);
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}
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if (spa->spa_compatibility != NULL) {
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spa_prop_add_list(*nvp, ZPOOL_PROP_COMPATIBILITY,
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spa->spa_compatibility, 0, ZPROP_SRC_LOCAL);
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}
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if (spa->spa_root != NULL)
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spa_prop_add_list(*nvp, ZPOOL_PROP_ALTROOT, spa->spa_root,
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0, ZPROP_SRC_LOCAL);
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if (spa_feature_is_enabled(spa, SPA_FEATURE_LARGE_BLOCKS)) {
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spa_prop_add_list(*nvp, ZPOOL_PROP_MAXBLOCKSIZE, NULL,
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MIN(zfs_max_recordsize, SPA_MAXBLOCKSIZE), ZPROP_SRC_NONE);
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} else {
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spa_prop_add_list(*nvp, ZPOOL_PROP_MAXBLOCKSIZE, NULL,
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SPA_OLD_MAXBLOCKSIZE, ZPROP_SRC_NONE);
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}
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if (spa_feature_is_enabled(spa, SPA_FEATURE_LARGE_DNODE)) {
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spa_prop_add_list(*nvp, ZPOOL_PROP_MAXDNODESIZE, NULL,
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DNODE_MAX_SIZE, ZPROP_SRC_NONE);
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} else {
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spa_prop_add_list(*nvp, ZPOOL_PROP_MAXDNODESIZE, NULL,
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DNODE_MIN_SIZE, ZPROP_SRC_NONE);
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}
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if ((dp = list_head(&spa->spa_config_list)) != NULL) {
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if (dp->scd_path == NULL) {
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spa_prop_add_list(*nvp, ZPOOL_PROP_CACHEFILE,
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"none", 0, ZPROP_SRC_LOCAL);
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} else if (strcmp(dp->scd_path, spa_config_path) != 0) {
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spa_prop_add_list(*nvp, ZPOOL_PROP_CACHEFILE,
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dp->scd_path, 0, ZPROP_SRC_LOCAL);
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}
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}
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}
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|
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/*
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* Get zpool property values.
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*/
|
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int
|
|
spa_prop_get(spa_t *spa, nvlist_t **nvp)
|
|
{
|
|
objset_t *mos = spa->spa_meta_objset;
|
|
zap_cursor_t zc;
|
|
zap_attribute_t za;
|
|
dsl_pool_t *dp;
|
|
int err;
|
|
|
|
err = nvlist_alloc(nvp, NV_UNIQUE_NAME, KM_SLEEP);
|
|
if (err)
|
|
return (err);
|
|
|
|
dp = spa_get_dsl(spa);
|
|
dsl_pool_config_enter(dp, FTAG);
|
|
mutex_enter(&spa->spa_props_lock);
|
|
|
|
/*
|
|
* Get properties from the spa config.
|
|
*/
|
|
spa_prop_get_config(spa, nvp);
|
|
|
|
/* If no pool property object, no more prop to get. */
|
|
if (mos == NULL || spa->spa_pool_props_object == 0)
|
|
goto out;
|
|
|
|
/*
|
|
* Get properties from the MOS pool property object.
|
|
*/
|
|
for (zap_cursor_init(&zc, mos, spa->spa_pool_props_object);
|
|
(err = zap_cursor_retrieve(&zc, &za)) == 0;
|
|
zap_cursor_advance(&zc)) {
|
|
uint64_t intval = 0;
|
|
char *strval = NULL;
|
|
zprop_source_t src = ZPROP_SRC_DEFAULT;
|
|
zpool_prop_t prop;
|
|
|
|
if ((prop = zpool_name_to_prop(za.za_name)) == ZPOOL_PROP_INVAL)
|
|
continue;
|
|
|
|
switch (za.za_integer_length) {
|
|
case 8:
|
|
/* integer property */
|
|
if (za.za_first_integer !=
|
|
zpool_prop_default_numeric(prop))
|
|
src = ZPROP_SRC_LOCAL;
|
|
|
|
if (prop == ZPOOL_PROP_BOOTFS) {
|
|
dsl_dataset_t *ds = NULL;
|
|
|
|
err = dsl_dataset_hold_obj(dp,
|
|
za.za_first_integer, FTAG, &ds);
|
|
if (err != 0)
|
|
break;
|
|
|
|
strval = kmem_alloc(ZFS_MAX_DATASET_NAME_LEN,
|
|
KM_SLEEP);
|
|
dsl_dataset_name(ds, strval);
|
|
dsl_dataset_rele(ds, FTAG);
|
|
} else {
|
|
strval = NULL;
|
|
intval = za.za_first_integer;
|
|
}
|
|
|
|
spa_prop_add_list(*nvp, prop, strval, intval, src);
|
|
|
|
if (strval != NULL)
|
|
kmem_free(strval, ZFS_MAX_DATASET_NAME_LEN);
|
|
|
|
break;
|
|
|
|
case 1:
|
|
/* string property */
|
|
strval = kmem_alloc(za.za_num_integers, KM_SLEEP);
|
|
err = zap_lookup(mos, spa->spa_pool_props_object,
|
|
za.za_name, 1, za.za_num_integers, strval);
|
|
if (err) {
|
|
kmem_free(strval, za.za_num_integers);
|
|
break;
|
|
}
|
|
spa_prop_add_list(*nvp, prop, strval, 0, src);
|
|
kmem_free(strval, za.za_num_integers);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
zap_cursor_fini(&zc);
|
|
out:
|
|
mutex_exit(&spa->spa_props_lock);
|
|
dsl_pool_config_exit(dp, FTAG);
|
|
if (err && err != ENOENT) {
|
|
nvlist_free(*nvp);
|
|
*nvp = NULL;
|
|
return (err);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Validate the given pool properties nvlist and modify the list
|
|
* for the property values to be set.
|
|
*/
|
|
static int
|
|
spa_prop_validate(spa_t *spa, nvlist_t *props)
|
|
{
|
|
nvpair_t *elem;
|
|
int error = 0, reset_bootfs = 0;
|
|
uint64_t objnum = 0;
|
|
boolean_t has_feature = B_FALSE;
|
|
|
|
elem = NULL;
|
|
while ((elem = nvlist_next_nvpair(props, elem)) != NULL) {
|
|
uint64_t intval;
|
|
char *strval, *slash, *check, *fname;
|
|
const char *propname = nvpair_name(elem);
|
|
zpool_prop_t prop = zpool_name_to_prop(propname);
|
|
|
|
switch (prop) {
|
|
case ZPOOL_PROP_INVAL:
|
|
if (!zpool_prop_feature(propname)) {
|
|
error = SET_ERROR(EINVAL);
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Sanitize the input.
|
|
*/
|
|
if (nvpair_type(elem) != DATA_TYPE_UINT64) {
|
|
error = SET_ERROR(EINVAL);
|
|
break;
|
|
}
|
|
|
|
if (nvpair_value_uint64(elem, &intval) != 0) {
|
|
error = SET_ERROR(EINVAL);
|
|
break;
|
|
}
|
|
|
|
if (intval != 0) {
|
|
error = SET_ERROR(EINVAL);
|
|
break;
|
|
}
|
|
|
|
fname = strchr(propname, '@') + 1;
|
|
if (zfeature_lookup_name(fname, NULL) != 0) {
|
|
error = SET_ERROR(EINVAL);
|
|
break;
|
|
}
|
|
|
|
has_feature = B_TRUE;
|
|
break;
|
|
|
|
case ZPOOL_PROP_VERSION:
|
|
error = nvpair_value_uint64(elem, &intval);
|
|
if (!error &&
|
|
(intval < spa_version(spa) ||
|
|
intval > SPA_VERSION_BEFORE_FEATURES ||
|
|
has_feature))
|
|
error = SET_ERROR(EINVAL);
|
|
break;
|
|
|
|
case ZPOOL_PROP_DELEGATION:
|
|
case ZPOOL_PROP_AUTOREPLACE:
|
|
case ZPOOL_PROP_LISTSNAPS:
|
|
case ZPOOL_PROP_AUTOEXPAND:
|
|
case ZPOOL_PROP_AUTOTRIM:
|
|
error = nvpair_value_uint64(elem, &intval);
|
|
if (!error && intval > 1)
|
|
error = SET_ERROR(EINVAL);
|
|
break;
|
|
|
|
case ZPOOL_PROP_MULTIHOST:
|
|
error = nvpair_value_uint64(elem, &intval);
|
|
if (!error && intval > 1)
|
|
error = SET_ERROR(EINVAL);
|
|
|
|
if (!error) {
|
|
uint32_t hostid = zone_get_hostid(NULL);
|
|
if (hostid)
|
|
spa->spa_hostid = hostid;
|
|
else
|
|
error = SET_ERROR(ENOTSUP);
|
|
}
|
|
|
|
break;
|
|
|
|
case ZPOOL_PROP_BOOTFS:
|
|
/*
|
|
* If the pool version is less than SPA_VERSION_BOOTFS,
|
|
* or the pool is still being created (version == 0),
|
|
* the bootfs property cannot be set.
|
|
*/
|
|
if (spa_version(spa) < SPA_VERSION_BOOTFS) {
|
|
error = SET_ERROR(ENOTSUP);
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Make sure the vdev config is bootable
|
|
*/
|
|
if (!vdev_is_bootable(spa->spa_root_vdev)) {
|
|
error = SET_ERROR(ENOTSUP);
|
|
break;
|
|
}
|
|
|
|
reset_bootfs = 1;
|
|
|
|
error = nvpair_value_string(elem, &strval);
|
|
|
|
if (!error) {
|
|
objset_t *os;
|
|
|
|
if (strval == NULL || strval[0] == '\0') {
|
|
objnum = zpool_prop_default_numeric(
|
|
ZPOOL_PROP_BOOTFS);
|
|
break;
|
|
}
|
|
|
|
error = dmu_objset_hold(strval, FTAG, &os);
|
|
if (error != 0)
|
|
break;
|
|
|
|
/* Must be ZPL. */
|
|
if (dmu_objset_type(os) != DMU_OST_ZFS) {
|
|
error = SET_ERROR(ENOTSUP);
|
|
} else {
|
|
objnum = dmu_objset_id(os);
|
|
}
|
|
dmu_objset_rele(os, FTAG);
|
|
}
|
|
break;
|
|
|
|
case ZPOOL_PROP_FAILUREMODE:
|
|
error = nvpair_value_uint64(elem, &intval);
|
|
if (!error && intval > ZIO_FAILURE_MODE_PANIC)
|
|
error = SET_ERROR(EINVAL);
|
|
|
|
/*
|
|
* This is a special case which only occurs when
|
|
* the pool has completely failed. This allows
|
|
* the user to change the in-core failmode property
|
|
* without syncing it out to disk (I/Os might
|
|
* currently be blocked). We do this by returning
|
|
* EIO to the caller (spa_prop_set) to trick it
|
|
* into thinking we encountered a property validation
|
|
* error.
|
|
*/
|
|
if (!error && spa_suspended(spa)) {
|
|
spa->spa_failmode = intval;
|
|
error = SET_ERROR(EIO);
|
|
}
|
|
break;
|
|
|
|
case ZPOOL_PROP_CACHEFILE:
|
|
if ((error = nvpair_value_string(elem, &strval)) != 0)
|
|
break;
|
|
|
|
if (strval[0] == '\0')
|
|
break;
|
|
|
|
if (strcmp(strval, "none") == 0)
|
|
break;
|
|
|
|
if (strval[0] != '/') {
|
|
error = SET_ERROR(EINVAL);
|
|
break;
|
|
}
|
|
|
|
slash = strrchr(strval, '/');
|
|
ASSERT(slash != NULL);
|
|
|
|
if (slash[1] == '\0' || strcmp(slash, "/.") == 0 ||
|
|
strcmp(slash, "/..") == 0)
|
|
error = SET_ERROR(EINVAL);
|
|
break;
|
|
|
|
case ZPOOL_PROP_COMMENT:
|
|
if ((error = nvpair_value_string(elem, &strval)) != 0)
|
|
break;
|
|
for (check = strval; *check != '\0'; check++) {
|
|
if (!isprint(*check)) {
|
|
error = SET_ERROR(EINVAL);
|
|
break;
|
|
}
|
|
}
|
|
if (strlen(strval) > ZPROP_MAX_COMMENT)
|
|
error = SET_ERROR(E2BIG);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (error)
|
|
break;
|
|
}
|
|
|
|
(void) nvlist_remove_all(props,
|
|
zpool_prop_to_name(ZPOOL_PROP_DEDUPDITTO));
|
|
|
|
if (!error && reset_bootfs) {
|
|
error = nvlist_remove(props,
|
|
zpool_prop_to_name(ZPOOL_PROP_BOOTFS), DATA_TYPE_STRING);
|
|
|
|
if (!error) {
|
|
error = nvlist_add_uint64(props,
|
|
zpool_prop_to_name(ZPOOL_PROP_BOOTFS), objnum);
|
|
}
|
|
}
|
|
|
|
return (error);
|
|
}
|
|
|
|
void
|
|
spa_configfile_set(spa_t *spa, nvlist_t *nvp, boolean_t need_sync)
|
|
{
|
|
char *cachefile;
|
|
spa_config_dirent_t *dp;
|
|
|
|
if (nvlist_lookup_string(nvp, zpool_prop_to_name(ZPOOL_PROP_CACHEFILE),
|
|
&cachefile) != 0)
|
|
return;
|
|
|
|
dp = kmem_alloc(sizeof (spa_config_dirent_t),
|
|
KM_SLEEP);
|
|
|
|
if (cachefile[0] == '\0')
|
|
dp->scd_path = spa_strdup(spa_config_path);
|
|
else if (strcmp(cachefile, "none") == 0)
|
|
dp->scd_path = NULL;
|
|
else
|
|
dp->scd_path = spa_strdup(cachefile);
|
|
|
|
list_insert_head(&spa->spa_config_list, dp);
|
|
if (need_sync)
|
|
spa_async_request(spa, SPA_ASYNC_CONFIG_UPDATE);
|
|
}
|
|
|
|
int
|
|
spa_prop_set(spa_t *spa, nvlist_t *nvp)
|
|
{
|
|
int error;
|
|
nvpair_t *elem = NULL;
|
|
boolean_t need_sync = B_FALSE;
|
|
|
|
if ((error = spa_prop_validate(spa, nvp)) != 0)
|
|
return (error);
|
|
|
|
while ((elem = nvlist_next_nvpair(nvp, elem)) != NULL) {
|
|
zpool_prop_t prop = zpool_name_to_prop(nvpair_name(elem));
|
|
|
|
if (prop == ZPOOL_PROP_CACHEFILE ||
|
|
prop == ZPOOL_PROP_ALTROOT ||
|
|
prop == ZPOOL_PROP_READONLY)
|
|
continue;
|
|
|
|
if (prop == ZPOOL_PROP_VERSION || prop == ZPOOL_PROP_INVAL) {
|
|
uint64_t ver;
|
|
|
|
if (prop == ZPOOL_PROP_VERSION) {
|
|
VERIFY(nvpair_value_uint64(elem, &ver) == 0);
|
|
} else {
|
|
ASSERT(zpool_prop_feature(nvpair_name(elem)));
|
|
ver = SPA_VERSION_FEATURES;
|
|
need_sync = B_TRUE;
|
|
}
|
|
|
|
/* Save time if the version is already set. */
|
|
if (ver == spa_version(spa))
|
|
continue;
|
|
|
|
/*
|
|
* In addition to the pool directory object, we might
|
|
* create the pool properties object, the features for
|
|
* read object, the features for write object, or the
|
|
* feature descriptions object.
|
|
*/
|
|
error = dsl_sync_task(spa->spa_name, NULL,
|
|
spa_sync_version, &ver,
|
|
6, ZFS_SPACE_CHECK_RESERVED);
|
|
if (error)
|
|
return (error);
|
|
continue;
|
|
}
|
|
|
|
need_sync = B_TRUE;
|
|
break;
|
|
}
|
|
|
|
if (need_sync) {
|
|
return (dsl_sync_task(spa->spa_name, NULL, spa_sync_props,
|
|
nvp, 6, ZFS_SPACE_CHECK_RESERVED));
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* If the bootfs property value is dsobj, clear it.
|
|
*/
|
|
void
|
|
spa_prop_clear_bootfs(spa_t *spa, uint64_t dsobj, dmu_tx_t *tx)
|
|
{
|
|
if (spa->spa_bootfs == dsobj && spa->spa_pool_props_object != 0) {
|
|
VERIFY(zap_remove(spa->spa_meta_objset,
|
|
spa->spa_pool_props_object,
|
|
zpool_prop_to_name(ZPOOL_PROP_BOOTFS), tx) == 0);
|
|
spa->spa_bootfs = 0;
|
|
}
|
|
}
|
|
|
|
/*ARGSUSED*/
|
|
static int
|
|
spa_change_guid_check(void *arg, dmu_tx_t *tx)
|
|
{
|
|
uint64_t *newguid __maybe_unused = arg;
|
|
spa_t *spa = dmu_tx_pool(tx)->dp_spa;
|
|
vdev_t *rvd = spa->spa_root_vdev;
|
|
uint64_t vdev_state;
|
|
|
|
if (spa_feature_is_active(spa, SPA_FEATURE_POOL_CHECKPOINT)) {
|
|
int error = (spa_has_checkpoint(spa)) ?
|
|
ZFS_ERR_CHECKPOINT_EXISTS : ZFS_ERR_DISCARDING_CHECKPOINT;
|
|
return (SET_ERROR(error));
|
|
}
|
|
|
|
spa_config_enter(spa, SCL_STATE, FTAG, RW_READER);
|
|
vdev_state = rvd->vdev_state;
|
|
spa_config_exit(spa, SCL_STATE, FTAG);
|
|
|
|
if (vdev_state != VDEV_STATE_HEALTHY)
|
|
return (SET_ERROR(ENXIO));
|
|
|
|
ASSERT3U(spa_guid(spa), !=, *newguid);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
spa_change_guid_sync(void *arg, dmu_tx_t *tx)
|
|
{
|
|
uint64_t *newguid = arg;
|
|
spa_t *spa = dmu_tx_pool(tx)->dp_spa;
|
|
uint64_t oldguid;
|
|
vdev_t *rvd = spa->spa_root_vdev;
|
|
|
|
oldguid = spa_guid(spa);
|
|
|
|
spa_config_enter(spa, SCL_STATE, FTAG, RW_READER);
|
|
rvd->vdev_guid = *newguid;
|
|
rvd->vdev_guid_sum += (*newguid - oldguid);
|
|
vdev_config_dirty(rvd);
|
|
spa_config_exit(spa, SCL_STATE, FTAG);
|
|
|
|
spa_history_log_internal(spa, "guid change", tx, "old=%llu new=%llu",
|
|
(u_longlong_t)oldguid, (u_longlong_t)*newguid);
|
|
}
|
|
|
|
/*
|
|
* Change the GUID for the pool. This is done so that we can later
|
|
* re-import a pool built from a clone of our own vdevs. We will modify
|
|
* the root vdev's guid, our own pool guid, and then mark all of our
|
|
* vdevs dirty. Note that we must make sure that all our vdevs are
|
|
* online when we do this, or else any vdevs that weren't present
|
|
* would be orphaned from our pool. We are also going to issue a
|
|
* sysevent to update any watchers.
|
|
*/
|
|
int
|
|
spa_change_guid(spa_t *spa)
|
|
{
|
|
int error;
|
|
uint64_t guid;
|
|
|
|
mutex_enter(&spa->spa_vdev_top_lock);
|
|
mutex_enter(&spa_namespace_lock);
|
|
guid = spa_generate_guid(NULL);
|
|
|
|
error = dsl_sync_task(spa->spa_name, spa_change_guid_check,
|
|
spa_change_guid_sync, &guid, 5, ZFS_SPACE_CHECK_RESERVED);
|
|
|
|
if (error == 0) {
|
|
spa_write_cachefile(spa, B_FALSE, B_TRUE);
|
|
spa_event_notify(spa, NULL, NULL, ESC_ZFS_POOL_REGUID);
|
|
}
|
|
|
|
mutex_exit(&spa_namespace_lock);
|
|
mutex_exit(&spa->spa_vdev_top_lock);
|
|
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* ==========================================================================
|
|
* SPA state manipulation (open/create/destroy/import/export)
|
|
* ==========================================================================
|
|
*/
|
|
|
|
static int
|
|
spa_error_entry_compare(const void *a, const void *b)
|
|
{
|
|
const spa_error_entry_t *sa = (const spa_error_entry_t *)a;
|
|
const spa_error_entry_t *sb = (const spa_error_entry_t *)b;
|
|
int ret;
|
|
|
|
ret = memcmp(&sa->se_bookmark, &sb->se_bookmark,
|
|
sizeof (zbookmark_phys_t));
|
|
|
|
return (TREE_ISIGN(ret));
|
|
}
|
|
|
|
/*
|
|
* Utility function which retrieves copies of the current logs and
|
|
* re-initializes them in the process.
|
|
*/
|
|
void
|
|
spa_get_errlists(spa_t *spa, avl_tree_t *last, avl_tree_t *scrub)
|
|
{
|
|
ASSERT(MUTEX_HELD(&spa->spa_errlist_lock));
|
|
|
|
bcopy(&spa->spa_errlist_last, last, sizeof (avl_tree_t));
|
|
bcopy(&spa->spa_errlist_scrub, scrub, sizeof (avl_tree_t));
|
|
|
|
avl_create(&spa->spa_errlist_scrub,
|
|
spa_error_entry_compare, sizeof (spa_error_entry_t),
|
|
offsetof(spa_error_entry_t, se_avl));
|
|
avl_create(&spa->spa_errlist_last,
|
|
spa_error_entry_compare, sizeof (spa_error_entry_t),
|
|
offsetof(spa_error_entry_t, se_avl));
|
|
}
|
|
|
|
static void
|
|
spa_taskqs_init(spa_t *spa, zio_type_t t, zio_taskq_type_t q)
|
|
{
|
|
const zio_taskq_info_t *ztip = &zio_taskqs[t][q];
|
|
enum zti_modes mode = ztip->zti_mode;
|
|
uint_t value = ztip->zti_value;
|
|
uint_t count = ztip->zti_count;
|
|
spa_taskqs_t *tqs = &spa->spa_zio_taskq[t][q];
|
|
uint_t cpus, flags = TASKQ_DYNAMIC;
|
|
boolean_t batch = B_FALSE;
|
|
|
|
switch (mode) {
|
|
case ZTI_MODE_FIXED:
|
|
ASSERT3U(value, >, 0);
|
|
break;
|
|
|
|
case ZTI_MODE_BATCH:
|
|
batch = B_TRUE;
|
|
flags |= TASKQ_THREADS_CPU_PCT;
|
|
value = MIN(zio_taskq_batch_pct, 100);
|
|
break;
|
|
|
|
case ZTI_MODE_SCALE:
|
|
flags |= TASKQ_THREADS_CPU_PCT;
|
|
/*
|
|
* We want more taskqs to reduce lock contention, but we want
|
|
* less for better request ordering and CPU utilization.
|
|
*/
|
|
cpus = MAX(1, boot_ncpus * zio_taskq_batch_pct / 100);
|
|
if (zio_taskq_batch_tpq > 0) {
|
|
count = MAX(1, (cpus + zio_taskq_batch_tpq / 2) /
|
|
zio_taskq_batch_tpq);
|
|
} else {
|
|
/*
|
|
* Prefer 6 threads per taskq, but no more taskqs
|
|
* than threads in them on large systems. For 80%:
|
|
*
|
|
* taskq taskq total
|
|
* cpus taskqs percent threads threads
|
|
* ------- ------- ------- ------- -------
|
|
* 1 1 80% 1 1
|
|
* 2 1 80% 1 1
|
|
* 4 1 80% 3 3
|
|
* 8 2 40% 3 6
|
|
* 16 3 27% 4 12
|
|
* 32 5 16% 5 25
|
|
* 64 7 11% 7 49
|
|
* 128 10 8% 10 100
|
|
* 256 14 6% 15 210
|
|
*/
|
|
count = 1 + cpus / 6;
|
|
while (count * count > cpus)
|
|
count--;
|
|
}
|
|
/* Limit each taskq within 100% to not trigger assertion. */
|
|
count = MAX(count, (zio_taskq_batch_pct + 99) / 100);
|
|
value = (zio_taskq_batch_pct + count / 2) / count;
|
|
break;
|
|
|
|
case ZTI_MODE_NULL:
|
|
tqs->stqs_count = 0;
|
|
tqs->stqs_taskq = NULL;
|
|
return;
|
|
|
|
default:
|
|
panic("unrecognized mode for %s_%s taskq (%u:%u) in "
|
|
"spa_activate()",
|
|
zio_type_name[t], zio_taskq_types[q], mode, value);
|
|
break;
|
|
}
|
|
|
|
ASSERT3U(count, >, 0);
|
|
tqs->stqs_count = count;
|
|
tqs->stqs_taskq = kmem_alloc(count * sizeof (taskq_t *), KM_SLEEP);
|
|
|
|
for (uint_t i = 0; i < count; i++) {
|
|
taskq_t *tq;
|
|
char name[32];
|
|
|
|
if (count > 1)
|
|
(void) snprintf(name, sizeof (name), "%s_%s_%u",
|
|
zio_type_name[t], zio_taskq_types[q], i);
|
|
else
|
|
(void) snprintf(name, sizeof (name), "%s_%s",
|
|
zio_type_name[t], zio_taskq_types[q]);
|
|
|
|
if (zio_taskq_sysdc && spa->spa_proc != &p0) {
|
|
if (batch)
|
|
flags |= TASKQ_DC_BATCH;
|
|
|
|
tq = taskq_create_sysdc(name, value, 50, INT_MAX,
|
|
spa->spa_proc, zio_taskq_basedc, flags);
|
|
} else {
|
|
pri_t pri = maxclsyspri;
|
|
/*
|
|
* The write issue taskq can be extremely CPU
|
|
* intensive. Run it at slightly less important
|
|
* priority than the other taskqs.
|
|
*
|
|
* Under Linux and FreeBSD this means incrementing
|
|
* the priority value as opposed to platforms like
|
|
* illumos where it should be decremented.
|
|
*
|
|
* On FreeBSD, if priorities divided by four (RQ_PPQ)
|
|
* are equal then a difference between them is
|
|
* insignificant.
|
|
*/
|
|
if (t == ZIO_TYPE_WRITE && q == ZIO_TASKQ_ISSUE) {
|
|
#if defined(__linux__)
|
|
pri++;
|
|
#elif defined(__FreeBSD__)
|
|
pri += 4;
|
|
#else
|
|
#error "unknown OS"
|
|
#endif
|
|
}
|
|
tq = taskq_create_proc(name, value, pri, 50,
|
|
INT_MAX, spa->spa_proc, flags);
|
|
}
|
|
|
|
tqs->stqs_taskq[i] = tq;
|
|
}
|
|
}
|
|
|
|
static void
|
|
spa_taskqs_fini(spa_t *spa, zio_type_t t, zio_taskq_type_t q)
|
|
{
|
|
spa_taskqs_t *tqs = &spa->spa_zio_taskq[t][q];
|
|
|
|
if (tqs->stqs_taskq == NULL) {
|
|
ASSERT3U(tqs->stqs_count, ==, 0);
|
|
return;
|
|
}
|
|
|
|
for (uint_t i = 0; i < tqs->stqs_count; i++) {
|
|
ASSERT3P(tqs->stqs_taskq[i], !=, NULL);
|
|
taskq_destroy(tqs->stqs_taskq[i]);
|
|
}
|
|
|
|
kmem_free(tqs->stqs_taskq, tqs->stqs_count * sizeof (taskq_t *));
|
|
tqs->stqs_taskq = NULL;
|
|
}
|
|
|
|
/*
|
|
* Dispatch a task to the appropriate taskq for the ZFS I/O type and priority.
|
|
* Note that a type may have multiple discrete taskqs to avoid lock contention
|
|
* on the taskq itself. In that case we choose which taskq at random by using
|
|
* the low bits of gethrtime().
|
|
*/
|
|
void
|
|
spa_taskq_dispatch_ent(spa_t *spa, zio_type_t t, zio_taskq_type_t q,
|
|
task_func_t *func, void *arg, uint_t flags, taskq_ent_t *ent)
|
|
{
|
|
spa_taskqs_t *tqs = &spa->spa_zio_taskq[t][q];
|
|
taskq_t *tq;
|
|
|
|
ASSERT3P(tqs->stqs_taskq, !=, NULL);
|
|
ASSERT3U(tqs->stqs_count, !=, 0);
|
|
|
|
if (tqs->stqs_count == 1) {
|
|
tq = tqs->stqs_taskq[0];
|
|
} else {
|
|
tq = tqs->stqs_taskq[((uint64_t)gethrtime()) % tqs->stqs_count];
|
|
}
|
|
|
|
taskq_dispatch_ent(tq, func, arg, flags, ent);
|
|
}
|
|
|
|
/*
|
|
* Same as spa_taskq_dispatch_ent() but block on the task until completion.
|
|
*/
|
|
void
|
|
spa_taskq_dispatch_sync(spa_t *spa, zio_type_t t, zio_taskq_type_t q,
|
|
task_func_t *func, void *arg, uint_t flags)
|
|
{
|
|
spa_taskqs_t *tqs = &spa->spa_zio_taskq[t][q];
|
|
taskq_t *tq;
|
|
taskqid_t id;
|
|
|
|
ASSERT3P(tqs->stqs_taskq, !=, NULL);
|
|
ASSERT3U(tqs->stqs_count, !=, 0);
|
|
|
|
if (tqs->stqs_count == 1) {
|
|
tq = tqs->stqs_taskq[0];
|
|
} else {
|
|
tq = tqs->stqs_taskq[((uint64_t)gethrtime()) % tqs->stqs_count];
|
|
}
|
|
|
|
id = taskq_dispatch(tq, func, arg, flags);
|
|
if (id)
|
|
taskq_wait_id(tq, id);
|
|
}
|
|
|
|
static void
|
|
spa_create_zio_taskqs(spa_t *spa)
|
|
{
|
|
for (int t = 0; t < ZIO_TYPES; t++) {
|
|
for (int q = 0; q < ZIO_TASKQ_TYPES; q++) {
|
|
spa_taskqs_init(spa, t, q);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Disabled until spa_thread() can be adapted for Linux.
|
|
*/
|
|
#undef HAVE_SPA_THREAD
|
|
|
|
#if defined(_KERNEL) && defined(HAVE_SPA_THREAD)
|
|
static void
|
|
spa_thread(void *arg)
|
|
{
|
|
psetid_t zio_taskq_psrset_bind = PS_NONE;
|
|
callb_cpr_t cprinfo;
|
|
|
|
spa_t *spa = arg;
|
|
user_t *pu = PTOU(curproc);
|
|
|
|
CALLB_CPR_INIT(&cprinfo, &spa->spa_proc_lock, callb_generic_cpr,
|
|
spa->spa_name);
|
|
|
|
ASSERT(curproc != &p0);
|
|
(void) snprintf(pu->u_psargs, sizeof (pu->u_psargs),
|
|
"zpool-%s", spa->spa_name);
|
|
(void) strlcpy(pu->u_comm, pu->u_psargs, sizeof (pu->u_comm));
|
|
|
|
/* bind this thread to the requested psrset */
|
|
if (zio_taskq_psrset_bind != PS_NONE) {
|
|
pool_lock();
|
|
mutex_enter(&cpu_lock);
|
|
mutex_enter(&pidlock);
|
|
mutex_enter(&curproc->p_lock);
|
|
|
|
if (cpupart_bind_thread(curthread, zio_taskq_psrset_bind,
|
|
0, NULL, NULL) == 0) {
|
|
curthread->t_bind_pset = zio_taskq_psrset_bind;
|
|
} else {
|
|
cmn_err(CE_WARN,
|
|
"Couldn't bind process for zfs pool \"%s\" to "
|
|
"pset %d\n", spa->spa_name, zio_taskq_psrset_bind);
|
|
}
|
|
|
|
mutex_exit(&curproc->p_lock);
|
|
mutex_exit(&pidlock);
|
|
mutex_exit(&cpu_lock);
|
|
pool_unlock();
|
|
}
|
|
|
|
if (zio_taskq_sysdc) {
|
|
sysdc_thread_enter(curthread, 100, 0);
|
|
}
|
|
|
|
spa->spa_proc = curproc;
|
|
spa->spa_did = curthread->t_did;
|
|
|
|
spa_create_zio_taskqs(spa);
|
|
|
|
mutex_enter(&spa->spa_proc_lock);
|
|
ASSERT(spa->spa_proc_state == SPA_PROC_CREATED);
|
|
|
|
spa->spa_proc_state = SPA_PROC_ACTIVE;
|
|
cv_broadcast(&spa->spa_proc_cv);
|
|
|
|
CALLB_CPR_SAFE_BEGIN(&cprinfo);
|
|
while (spa->spa_proc_state == SPA_PROC_ACTIVE)
|
|
cv_wait(&spa->spa_proc_cv, &spa->spa_proc_lock);
|
|
CALLB_CPR_SAFE_END(&cprinfo, &spa->spa_proc_lock);
|
|
|
|
ASSERT(spa->spa_proc_state == SPA_PROC_DEACTIVATE);
|
|
spa->spa_proc_state = SPA_PROC_GONE;
|
|
spa->spa_proc = &p0;
|
|
cv_broadcast(&spa->spa_proc_cv);
|
|
CALLB_CPR_EXIT(&cprinfo); /* drops spa_proc_lock */
|
|
|
|
mutex_enter(&curproc->p_lock);
|
|
lwp_exit();
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Activate an uninitialized pool.
|
|
*/
|
|
static void
|
|
spa_activate(spa_t *spa, spa_mode_t mode)
|
|
{
|
|
ASSERT(spa->spa_state == POOL_STATE_UNINITIALIZED);
|
|
|
|
spa->spa_state = POOL_STATE_ACTIVE;
|
|
spa->spa_mode = mode;
|
|
|
|
spa->spa_normal_class = metaslab_class_create(spa, zfs_metaslab_ops);
|
|
spa->spa_log_class = metaslab_class_create(spa, zfs_metaslab_ops);
|
|
spa->spa_embedded_log_class =
|
|
metaslab_class_create(spa, zfs_metaslab_ops);
|
|
spa->spa_special_class = metaslab_class_create(spa, zfs_metaslab_ops);
|
|
spa->spa_dedup_class = metaslab_class_create(spa, zfs_metaslab_ops);
|
|
|
|
/* Try to create a covering process */
|
|
mutex_enter(&spa->spa_proc_lock);
|
|
ASSERT(spa->spa_proc_state == SPA_PROC_NONE);
|
|
ASSERT(spa->spa_proc == &p0);
|
|
spa->spa_did = 0;
|
|
|
|
#ifdef HAVE_SPA_THREAD
|
|
/* Only create a process if we're going to be around a while. */
|
|
if (spa_create_process && strcmp(spa->spa_name, TRYIMPORT_NAME) != 0) {
|
|
if (newproc(spa_thread, (caddr_t)spa, syscid, maxclsyspri,
|
|
NULL, 0) == 0) {
|
|
spa->spa_proc_state = SPA_PROC_CREATED;
|
|
while (spa->spa_proc_state == SPA_PROC_CREATED) {
|
|
cv_wait(&spa->spa_proc_cv,
|
|
&spa->spa_proc_lock);
|
|
}
|
|
ASSERT(spa->spa_proc_state == SPA_PROC_ACTIVE);
|
|
ASSERT(spa->spa_proc != &p0);
|
|
ASSERT(spa->spa_did != 0);
|
|
} else {
|
|
#ifdef _KERNEL
|
|
cmn_err(CE_WARN,
|
|
"Couldn't create process for zfs pool \"%s\"\n",
|
|
spa->spa_name);
|
|
#endif
|
|
}
|
|
}
|
|
#endif /* HAVE_SPA_THREAD */
|
|
mutex_exit(&spa->spa_proc_lock);
|
|
|
|
/* If we didn't create a process, we need to create our taskqs. */
|
|
if (spa->spa_proc == &p0) {
|
|
spa_create_zio_taskqs(spa);
|
|
}
|
|
|
|
for (size_t i = 0; i < TXG_SIZE; i++) {
|
|
spa->spa_txg_zio[i] = zio_root(spa, NULL, NULL,
|
|
ZIO_FLAG_CANFAIL);
|
|
}
|
|
|
|
list_create(&spa->spa_config_dirty_list, sizeof (vdev_t),
|
|
offsetof(vdev_t, vdev_config_dirty_node));
|
|
list_create(&spa->spa_evicting_os_list, sizeof (objset_t),
|
|
offsetof(objset_t, os_evicting_node));
|
|
list_create(&spa->spa_state_dirty_list, sizeof (vdev_t),
|
|
offsetof(vdev_t, vdev_state_dirty_node));
|
|
|
|
txg_list_create(&spa->spa_vdev_txg_list, spa,
|
|
offsetof(struct vdev, vdev_txg_node));
|
|
|
|
avl_create(&spa->spa_errlist_scrub,
|
|
spa_error_entry_compare, sizeof (spa_error_entry_t),
|
|
offsetof(spa_error_entry_t, se_avl));
|
|
avl_create(&spa->spa_errlist_last,
|
|
spa_error_entry_compare, sizeof (spa_error_entry_t),
|
|
offsetof(spa_error_entry_t, se_avl));
|
|
|
|
spa_keystore_init(&spa->spa_keystore);
|
|
|
|
/*
|
|
* This taskq is used to perform zvol-minor-related tasks
|
|
* asynchronously. This has several advantages, including easy
|
|
* resolution of various deadlocks.
|
|
*
|
|
* The taskq must be single threaded to ensure tasks are always
|
|
* processed in the order in which they were dispatched.
|
|
*
|
|
* A taskq per pool allows one to keep the pools independent.
|
|
* This way if one pool is suspended, it will not impact another.
|
|
*
|
|
* The preferred location to dispatch a zvol minor task is a sync
|
|
* task. In this context, there is easy access to the spa_t and minimal
|
|
* error handling is required because the sync task must succeed.
|
|
*/
|
|
spa->spa_zvol_taskq = taskq_create("z_zvol", 1, defclsyspri,
|
|
1, INT_MAX, 0);
|
|
|
|
/*
|
|
* Taskq dedicated to prefetcher threads: this is used to prevent the
|
|
* pool traverse code from monopolizing the global (and limited)
|
|
* system_taskq by inappropriately scheduling long running tasks on it.
|
|
*/
|
|
spa->spa_prefetch_taskq = taskq_create("z_prefetch", 100,
|
|
defclsyspri, 1, INT_MAX, TASKQ_DYNAMIC | TASKQ_THREADS_CPU_PCT);
|
|
|
|
/*
|
|
* The taskq to upgrade datasets in this pool. Currently used by
|
|
* feature SPA_FEATURE_USEROBJ_ACCOUNTING/SPA_FEATURE_PROJECT_QUOTA.
|
|
*/
|
|
spa->spa_upgrade_taskq = taskq_create("z_upgrade", 100,
|
|
defclsyspri, 1, INT_MAX, TASKQ_DYNAMIC | TASKQ_THREADS_CPU_PCT);
|
|
}
|
|
|
|
/*
|
|
* Opposite of spa_activate().
|
|
*/
|
|
static void
|
|
spa_deactivate(spa_t *spa)
|
|
{
|
|
ASSERT(spa->spa_sync_on == B_FALSE);
|
|
ASSERT(spa->spa_dsl_pool == NULL);
|
|
ASSERT(spa->spa_root_vdev == NULL);
|
|
ASSERT(spa->spa_async_zio_root == NULL);
|
|
ASSERT(spa->spa_state != POOL_STATE_UNINITIALIZED);
|
|
|
|
spa_evicting_os_wait(spa);
|
|
|
|
if (spa->spa_zvol_taskq) {
|
|
taskq_destroy(spa->spa_zvol_taskq);
|
|
spa->spa_zvol_taskq = NULL;
|
|
}
|
|
|
|
if (spa->spa_prefetch_taskq) {
|
|
taskq_destroy(spa->spa_prefetch_taskq);
|
|
spa->spa_prefetch_taskq = NULL;
|
|
}
|
|
|
|
if (spa->spa_upgrade_taskq) {
|
|
taskq_destroy(spa->spa_upgrade_taskq);
|
|
spa->spa_upgrade_taskq = NULL;
|
|
}
|
|
|
|
txg_list_destroy(&spa->spa_vdev_txg_list);
|
|
|
|
list_destroy(&spa->spa_config_dirty_list);
|
|
list_destroy(&spa->spa_evicting_os_list);
|
|
list_destroy(&spa->spa_state_dirty_list);
|
|
|
|
taskq_cancel_id(system_delay_taskq, spa->spa_deadman_tqid);
|
|
|
|
for (int t = 0; t < ZIO_TYPES; t++) {
|
|
for (int q = 0; q < ZIO_TASKQ_TYPES; q++) {
|
|
spa_taskqs_fini(spa, t, q);
|
|
}
|
|
}
|
|
|
|
for (size_t i = 0; i < TXG_SIZE; i++) {
|
|
ASSERT3P(spa->spa_txg_zio[i], !=, NULL);
|
|
VERIFY0(zio_wait(spa->spa_txg_zio[i]));
|
|
spa->spa_txg_zio[i] = NULL;
|
|
}
|
|
|
|
metaslab_class_destroy(spa->spa_normal_class);
|
|
spa->spa_normal_class = NULL;
|
|
|
|
metaslab_class_destroy(spa->spa_log_class);
|
|
spa->spa_log_class = NULL;
|
|
|
|
metaslab_class_destroy(spa->spa_embedded_log_class);
|
|
spa->spa_embedded_log_class = NULL;
|
|
|
|
metaslab_class_destroy(spa->spa_special_class);
|
|
spa->spa_special_class = NULL;
|
|
|
|
metaslab_class_destroy(spa->spa_dedup_class);
|
|
spa->spa_dedup_class = NULL;
|
|
|
|
/*
|
|
* If this was part of an import or the open otherwise failed, we may
|
|
* still have errors left in the queues. Empty them just in case.
|
|
*/
|
|
spa_errlog_drain(spa);
|
|
avl_destroy(&spa->spa_errlist_scrub);
|
|
avl_destroy(&spa->spa_errlist_last);
|
|
|
|
spa_keystore_fini(&spa->spa_keystore);
|
|
|
|
spa->spa_state = POOL_STATE_UNINITIALIZED;
|
|
|
|
mutex_enter(&spa->spa_proc_lock);
|
|
if (spa->spa_proc_state != SPA_PROC_NONE) {
|
|
ASSERT(spa->spa_proc_state == SPA_PROC_ACTIVE);
|
|
spa->spa_proc_state = SPA_PROC_DEACTIVATE;
|
|
cv_broadcast(&spa->spa_proc_cv);
|
|
while (spa->spa_proc_state == SPA_PROC_DEACTIVATE) {
|
|
ASSERT(spa->spa_proc != &p0);
|
|
cv_wait(&spa->spa_proc_cv, &spa->spa_proc_lock);
|
|
}
|
|
ASSERT(spa->spa_proc_state == SPA_PROC_GONE);
|
|
spa->spa_proc_state = SPA_PROC_NONE;
|
|
}
|
|
ASSERT(spa->spa_proc == &p0);
|
|
mutex_exit(&spa->spa_proc_lock);
|
|
|
|
/*
|
|
* We want to make sure spa_thread() has actually exited the ZFS
|
|
* module, so that the module can't be unloaded out from underneath
|
|
* it.
|
|
*/
|
|
if (spa->spa_did != 0) {
|
|
thread_join(spa->spa_did);
|
|
spa->spa_did = 0;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Verify a pool configuration, and construct the vdev tree appropriately. This
|
|
* will create all the necessary vdevs in the appropriate layout, with each vdev
|
|
* in the CLOSED state. This will prep the pool before open/creation/import.
|
|
* All vdev validation is done by the vdev_alloc() routine.
|
|
*/
|
|
int
|
|
spa_config_parse(spa_t *spa, vdev_t **vdp, nvlist_t *nv, vdev_t *parent,
|
|
uint_t id, int atype)
|
|
{
|
|
nvlist_t **child;
|
|
uint_t children;
|
|
int error;
|
|
|
|
if ((error = vdev_alloc(spa, vdp, nv, parent, id, atype)) != 0)
|
|
return (error);
|
|
|
|
if ((*vdp)->vdev_ops->vdev_op_leaf)
|
|
return (0);
|
|
|
|
error = nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN,
|
|
&child, &children);
|
|
|
|
if (error == ENOENT)
|
|
return (0);
|
|
|
|
if (error) {
|
|
vdev_free(*vdp);
|
|
*vdp = NULL;
|
|
return (SET_ERROR(EINVAL));
|
|
}
|
|
|
|
for (int c = 0; c < children; c++) {
|
|
vdev_t *vd;
|
|
if ((error = spa_config_parse(spa, &vd, child[c], *vdp, c,
|
|
atype)) != 0) {
|
|
vdev_free(*vdp);
|
|
*vdp = NULL;
|
|
return (error);
|
|
}
|
|
}
|
|
|
|
ASSERT(*vdp != NULL);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static boolean_t
|
|
spa_should_flush_logs_on_unload(spa_t *spa)
|
|
{
|
|
if (!spa_feature_is_active(spa, SPA_FEATURE_LOG_SPACEMAP))
|
|
return (B_FALSE);
|
|
|
|
if (!spa_writeable(spa))
|
|
return (B_FALSE);
|
|
|
|
if (!spa->spa_sync_on)
|
|
return (B_FALSE);
|
|
|
|
if (spa_state(spa) != POOL_STATE_EXPORTED)
|
|
return (B_FALSE);
|
|
|
|
if (zfs_keep_log_spacemaps_at_export)
|
|
return (B_FALSE);
|
|
|
|
return (B_TRUE);
|
|
}
|
|
|
|
/*
|
|
* Opens a transaction that will set the flag that will instruct
|
|
* spa_sync to attempt to flush all the metaslabs for that txg.
|
|
*/
|
|
static void
|
|
spa_unload_log_sm_flush_all(spa_t *spa)
|
|
{
|
|
dmu_tx_t *tx = dmu_tx_create_dd(spa_get_dsl(spa)->dp_mos_dir);
|
|
VERIFY0(dmu_tx_assign(tx, TXG_WAIT));
|
|
|
|
ASSERT3U(spa->spa_log_flushall_txg, ==, 0);
|
|
spa->spa_log_flushall_txg = dmu_tx_get_txg(tx);
|
|
|
|
dmu_tx_commit(tx);
|
|
txg_wait_synced(spa_get_dsl(spa), spa->spa_log_flushall_txg);
|
|
}
|
|
|
|
static void
|
|
spa_unload_log_sm_metadata(spa_t *spa)
|
|
{
|
|
void *cookie = NULL;
|
|
spa_log_sm_t *sls;
|
|
while ((sls = avl_destroy_nodes(&spa->spa_sm_logs_by_txg,
|
|
&cookie)) != NULL) {
|
|
VERIFY0(sls->sls_mscount);
|
|
kmem_free(sls, sizeof (spa_log_sm_t));
|
|
}
|
|
|
|
for (log_summary_entry_t *e = list_head(&spa->spa_log_summary);
|
|
e != NULL; e = list_head(&spa->spa_log_summary)) {
|
|
VERIFY0(e->lse_mscount);
|
|
list_remove(&spa->spa_log_summary, e);
|
|
kmem_free(e, sizeof (log_summary_entry_t));
|
|
}
|
|
|
|
spa->spa_unflushed_stats.sus_nblocks = 0;
|
|
spa->spa_unflushed_stats.sus_memused = 0;
|
|
spa->spa_unflushed_stats.sus_blocklimit = 0;
|
|
}
|
|
|
|
static void
|
|
spa_destroy_aux_threads(spa_t *spa)
|
|
{
|
|
if (spa->spa_condense_zthr != NULL) {
|
|
zthr_destroy(spa->spa_condense_zthr);
|
|
spa->spa_condense_zthr = NULL;
|
|
}
|
|
if (spa->spa_checkpoint_discard_zthr != NULL) {
|
|
zthr_destroy(spa->spa_checkpoint_discard_zthr);
|
|
spa->spa_checkpoint_discard_zthr = NULL;
|
|
}
|
|
if (spa->spa_livelist_delete_zthr != NULL) {
|
|
zthr_destroy(spa->spa_livelist_delete_zthr);
|
|
spa->spa_livelist_delete_zthr = NULL;
|
|
}
|
|
if (spa->spa_livelist_condense_zthr != NULL) {
|
|
zthr_destroy(spa->spa_livelist_condense_zthr);
|
|
spa->spa_livelist_condense_zthr = NULL;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Opposite of spa_load().
|
|
*/
|
|
static void
|
|
spa_unload(spa_t *spa)
|
|
{
|
|
ASSERT(MUTEX_HELD(&spa_namespace_lock));
|
|
ASSERT(spa_state(spa) != POOL_STATE_UNINITIALIZED);
|
|
|
|
spa_import_progress_remove(spa_guid(spa));
|
|
spa_load_note(spa, "UNLOADING");
|
|
|
|
spa_wake_waiters(spa);
|
|
|
|
/*
|
|
* If the log space map feature is enabled and the pool is getting
|
|
* exported (but not destroyed), we want to spend some time flushing
|
|
* as many metaslabs as we can in an attempt to destroy log space
|
|
* maps and save import time.
|
|
*/
|
|
if (spa_should_flush_logs_on_unload(spa))
|
|
spa_unload_log_sm_flush_all(spa);
|
|
|
|
/*
|
|
* Stop async tasks.
|
|
*/
|
|
spa_async_suspend(spa);
|
|
|
|
if (spa->spa_root_vdev) {
|
|
vdev_t *root_vdev = spa->spa_root_vdev;
|
|
vdev_initialize_stop_all(root_vdev, VDEV_INITIALIZE_ACTIVE);
|
|
vdev_trim_stop_all(root_vdev, VDEV_TRIM_ACTIVE);
|
|
vdev_autotrim_stop_all(spa);
|
|
vdev_rebuild_stop_all(spa);
|
|
}
|
|
|
|
/*
|
|
* Stop syncing.
|
|
*/
|
|
if (spa->spa_sync_on) {
|
|
txg_sync_stop(spa->spa_dsl_pool);
|
|
spa->spa_sync_on = B_FALSE;
|
|
}
|
|
|
|
/*
|
|
* This ensures that there is no async metaslab prefetching
|
|
* while we attempt to unload the spa.
|
|
*/
|
|
if (spa->spa_root_vdev != NULL) {
|
|
for (int c = 0; c < spa->spa_root_vdev->vdev_children; c++) {
|
|
vdev_t *vc = spa->spa_root_vdev->vdev_child[c];
|
|
if (vc->vdev_mg != NULL)
|
|
taskq_wait(vc->vdev_mg->mg_taskq);
|
|
}
|
|
}
|
|
|
|
if (spa->spa_mmp.mmp_thread)
|
|
mmp_thread_stop(spa);
|
|
|
|
/*
|
|
* Wait for any outstanding async I/O to complete.
|
|
*/
|
|
if (spa->spa_async_zio_root != NULL) {
|
|
for (int i = 0; i < max_ncpus; i++)
|
|
(void) zio_wait(spa->spa_async_zio_root[i]);
|
|
kmem_free(spa->spa_async_zio_root, max_ncpus * sizeof (void *));
|
|
spa->spa_async_zio_root = NULL;
|
|
}
|
|
|
|
if (spa->spa_vdev_removal != NULL) {
|
|
spa_vdev_removal_destroy(spa->spa_vdev_removal);
|
|
spa->spa_vdev_removal = NULL;
|
|
}
|
|
|
|
spa_destroy_aux_threads(spa);
|
|
|
|
spa_condense_fini(spa);
|
|
|
|
bpobj_close(&spa->spa_deferred_bpobj);
|
|
|
|
spa_config_enter(spa, SCL_ALL, spa, RW_WRITER);
|
|
|
|
/*
|
|
* Close all vdevs.
|
|
*/
|
|
if (spa->spa_root_vdev)
|
|
vdev_free(spa->spa_root_vdev);
|
|
ASSERT(spa->spa_root_vdev == NULL);
|
|
|
|
/*
|
|
* Close the dsl pool.
|
|
*/
|
|
if (spa->spa_dsl_pool) {
|
|
dsl_pool_close(spa->spa_dsl_pool);
|
|
spa->spa_dsl_pool = NULL;
|
|
spa->spa_meta_objset = NULL;
|
|
}
|
|
|
|
ddt_unload(spa);
|
|
spa_unload_log_sm_metadata(spa);
|
|
|
|
/*
|
|
* Drop and purge level 2 cache
|
|
*/
|
|
spa_l2cache_drop(spa);
|
|
|
|
for (int i = 0; i < spa->spa_spares.sav_count; i++)
|
|
vdev_free(spa->spa_spares.sav_vdevs[i]);
|
|
if (spa->spa_spares.sav_vdevs) {
|
|
kmem_free(spa->spa_spares.sav_vdevs,
|
|
spa->spa_spares.sav_count * sizeof (void *));
|
|
spa->spa_spares.sav_vdevs = NULL;
|
|
}
|
|
if (spa->spa_spares.sav_config) {
|
|
nvlist_free(spa->spa_spares.sav_config);
|
|
spa->spa_spares.sav_config = NULL;
|
|
}
|
|
spa->spa_spares.sav_count = 0;
|
|
|
|
for (int i = 0; i < spa->spa_l2cache.sav_count; i++) {
|
|
vdev_clear_stats(spa->spa_l2cache.sav_vdevs[i]);
|
|
vdev_free(spa->spa_l2cache.sav_vdevs[i]);
|
|
}
|
|
if (spa->spa_l2cache.sav_vdevs) {
|
|
kmem_free(spa->spa_l2cache.sav_vdevs,
|
|
spa->spa_l2cache.sav_count * sizeof (void *));
|
|
spa->spa_l2cache.sav_vdevs = NULL;
|
|
}
|
|
if (spa->spa_l2cache.sav_config) {
|
|
nvlist_free(spa->spa_l2cache.sav_config);
|
|
spa->spa_l2cache.sav_config = NULL;
|
|
}
|
|
spa->spa_l2cache.sav_count = 0;
|
|
|
|
spa->spa_async_suspended = 0;
|
|
|
|
spa->spa_indirect_vdevs_loaded = B_FALSE;
|
|
|
|
if (spa->spa_comment != NULL) {
|
|
spa_strfree(spa->spa_comment);
|
|
spa->spa_comment = NULL;
|
|
}
|
|
if (spa->spa_compatibility != NULL) {
|
|
spa_strfree(spa->spa_compatibility);
|
|
spa->spa_compatibility = NULL;
|
|
}
|
|
|
|
spa_config_exit(spa, SCL_ALL, spa);
|
|
}
|
|
|
|
/*
|
|
* Load (or re-load) the current list of vdevs describing the active spares for
|
|
* this pool. When this is called, we have some form of basic information in
|
|
* 'spa_spares.sav_config'. We parse this into vdevs, try to open them, and
|
|
* then re-generate a more complete list including status information.
|
|
*/
|
|
void
|
|
spa_load_spares(spa_t *spa)
|
|
{
|
|
nvlist_t **spares;
|
|
uint_t nspares;
|
|
int i;
|
|
vdev_t *vd, *tvd;
|
|
|
|
#ifndef _KERNEL
|
|
/*
|
|
* zdb opens both the current state of the pool and the
|
|
* checkpointed state (if present), with a different spa_t.
|
|
*
|
|
* As spare vdevs are shared among open pools, we skip loading
|
|
* them when we load the checkpointed state of the pool.
|
|
*/
|
|
if (!spa_writeable(spa))
|
|
return;
|
|
#endif
|
|
|
|
ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL);
|
|
|
|
/*
|
|
* First, close and free any existing spare vdevs.
|
|
*/
|
|
for (i = 0; i < spa->spa_spares.sav_count; i++) {
|
|
vd = spa->spa_spares.sav_vdevs[i];
|
|
|
|
/* Undo the call to spa_activate() below */
|
|
if ((tvd = spa_lookup_by_guid(spa, vd->vdev_guid,
|
|
B_FALSE)) != NULL && tvd->vdev_isspare)
|
|
spa_spare_remove(tvd);
|
|
vdev_close(vd);
|
|
vdev_free(vd);
|
|
}
|
|
|
|
if (spa->spa_spares.sav_vdevs)
|
|
kmem_free(spa->spa_spares.sav_vdevs,
|
|
spa->spa_spares.sav_count * sizeof (void *));
|
|
|
|
if (spa->spa_spares.sav_config == NULL)
|
|
nspares = 0;
|
|
else
|
|
VERIFY(nvlist_lookup_nvlist_array(spa->spa_spares.sav_config,
|
|
ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0);
|
|
|
|
spa->spa_spares.sav_count = (int)nspares;
|
|
spa->spa_spares.sav_vdevs = NULL;
|
|
|
|
if (nspares == 0)
|
|
return;
|
|
|
|
/*
|
|
* Construct the array of vdevs, opening them to get status in the
|
|
* process. For each spare, there is potentially two different vdev_t
|
|
* structures associated with it: one in the list of spares (used only
|
|
* for basic validation purposes) and one in the active vdev
|
|
* configuration (if it's spared in). During this phase we open and
|
|
* validate each vdev on the spare list. If the vdev also exists in the
|
|
* active configuration, then we also mark this vdev as an active spare.
|
|
*/
|
|
spa->spa_spares.sav_vdevs = kmem_zalloc(nspares * sizeof (void *),
|
|
KM_SLEEP);
|
|
for (i = 0; i < spa->spa_spares.sav_count; i++) {
|
|
VERIFY(spa_config_parse(spa, &vd, spares[i], NULL, 0,
|
|
VDEV_ALLOC_SPARE) == 0);
|
|
ASSERT(vd != NULL);
|
|
|
|
spa->spa_spares.sav_vdevs[i] = vd;
|
|
|
|
if ((tvd = spa_lookup_by_guid(spa, vd->vdev_guid,
|
|
B_FALSE)) != NULL) {
|
|
if (!tvd->vdev_isspare)
|
|
spa_spare_add(tvd);
|
|
|
|
/*
|
|
* We only mark the spare active if we were successfully
|
|
* able to load the vdev. Otherwise, importing a pool
|
|
* with a bad active spare would result in strange
|
|
* behavior, because multiple pool would think the spare
|
|
* is actively in use.
|
|
*
|
|
* There is a vulnerability here to an equally bizarre
|
|
* circumstance, where a dead active spare is later
|
|
* brought back to life (onlined or otherwise). Given
|
|
* the rarity of this scenario, and the extra complexity
|
|
* it adds, we ignore the possibility.
|
|
*/
|
|
if (!vdev_is_dead(tvd))
|
|
spa_spare_activate(tvd);
|
|
}
|
|
|
|
vd->vdev_top = vd;
|
|
vd->vdev_aux = &spa->spa_spares;
|
|
|
|
if (vdev_open(vd) != 0)
|
|
continue;
|
|
|
|
if (vdev_validate_aux(vd) == 0)
|
|
spa_spare_add(vd);
|
|
}
|
|
|
|
/*
|
|
* Recompute the stashed list of spares, with status information
|
|
* this time.
|
|
*/
|
|
VERIFY(nvlist_remove(spa->spa_spares.sav_config, ZPOOL_CONFIG_SPARES,
|
|
DATA_TYPE_NVLIST_ARRAY) == 0);
|
|
|
|
spares = kmem_alloc(spa->spa_spares.sav_count * sizeof (void *),
|
|
KM_SLEEP);
|
|
for (i = 0; i < spa->spa_spares.sav_count; i++)
|
|
spares[i] = vdev_config_generate(spa,
|
|
spa->spa_spares.sav_vdevs[i], B_TRUE, VDEV_CONFIG_SPARE);
|
|
VERIFY(nvlist_add_nvlist_array(spa->spa_spares.sav_config,
|
|
ZPOOL_CONFIG_SPARES, spares, spa->spa_spares.sav_count) == 0);
|
|
for (i = 0; i < spa->spa_spares.sav_count; i++)
|
|
nvlist_free(spares[i]);
|
|
kmem_free(spares, spa->spa_spares.sav_count * sizeof (void *));
|
|
}
|
|
|
|
/*
|
|
* Load (or re-load) the current list of vdevs describing the active l2cache for
|
|
* this pool. When this is called, we have some form of basic information in
|
|
* 'spa_l2cache.sav_config'. We parse this into vdevs, try to open them, and
|
|
* then re-generate a more complete list including status information.
|
|
* Devices which are already active have their details maintained, and are
|
|
* not re-opened.
|
|
*/
|
|
void
|
|
spa_load_l2cache(spa_t *spa)
|
|
{
|
|
nvlist_t **l2cache = NULL;
|
|
uint_t nl2cache;
|
|
int i, j, oldnvdevs;
|
|
uint64_t guid;
|
|
vdev_t *vd, **oldvdevs, **newvdevs;
|
|
spa_aux_vdev_t *sav = &spa->spa_l2cache;
|
|
|
|
#ifndef _KERNEL
|
|
/*
|
|
* zdb opens both the current state of the pool and the
|
|
* checkpointed state (if present), with a different spa_t.
|
|
*
|
|
* As L2 caches are part of the ARC which is shared among open
|
|
* pools, we skip loading them when we load the checkpointed
|
|
* state of the pool.
|
|
*/
|
|
if (!spa_writeable(spa))
|
|
return;
|
|
#endif
|
|
|
|
ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL);
|
|
|
|
oldvdevs = sav->sav_vdevs;
|
|
oldnvdevs = sav->sav_count;
|
|
sav->sav_vdevs = NULL;
|
|
sav->sav_count = 0;
|
|
|
|
if (sav->sav_config == NULL) {
|
|
nl2cache = 0;
|
|
newvdevs = NULL;
|
|
goto out;
|
|
}
|
|
|
|
VERIFY(nvlist_lookup_nvlist_array(sav->sav_config,
|
|
ZPOOL_CONFIG_L2CACHE, &l2cache, &nl2cache) == 0);
|
|
newvdevs = kmem_alloc(nl2cache * sizeof (void *), KM_SLEEP);
|
|
|
|
/*
|
|
* Process new nvlist of vdevs.
|
|
*/
|
|
for (i = 0; i < nl2cache; i++) {
|
|
VERIFY(nvlist_lookup_uint64(l2cache[i], ZPOOL_CONFIG_GUID,
|
|
&guid) == 0);
|
|
|
|
newvdevs[i] = NULL;
|
|
for (j = 0; j < oldnvdevs; j++) {
|
|
vd = oldvdevs[j];
|
|
if (vd != NULL && guid == vd->vdev_guid) {
|
|
/*
|
|
* Retain previous vdev for add/remove ops.
|
|
*/
|
|
newvdevs[i] = vd;
|
|
oldvdevs[j] = NULL;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (newvdevs[i] == NULL) {
|
|
/*
|
|
* Create new vdev
|
|
*/
|
|
VERIFY(spa_config_parse(spa, &vd, l2cache[i], NULL, 0,
|
|
VDEV_ALLOC_L2CACHE) == 0);
|
|
ASSERT(vd != NULL);
|
|
newvdevs[i] = vd;
|
|
|
|
/*
|
|
* Commit this vdev as an l2cache device,
|
|
* even if it fails to open.
|
|
*/
|
|
spa_l2cache_add(vd);
|
|
|
|
vd->vdev_top = vd;
|
|
vd->vdev_aux = sav;
|
|
|
|
spa_l2cache_activate(vd);
|
|
|
|
if (vdev_open(vd) != 0)
|
|
continue;
|
|
|
|
(void) vdev_validate_aux(vd);
|
|
|
|
if (!vdev_is_dead(vd))
|
|
l2arc_add_vdev(spa, vd);
|
|
|
|
/*
|
|
* Upon cache device addition to a pool or pool
|
|
* creation with a cache device or if the header
|
|
* of the device is invalid we issue an async
|
|
* TRIM command for the whole device which will
|
|
* execute if l2arc_trim_ahead > 0.
|
|
*/
|
|
spa_async_request(spa, SPA_ASYNC_L2CACHE_TRIM);
|
|
}
|
|
}
|
|
|
|
sav->sav_vdevs = newvdevs;
|
|
sav->sav_count = (int)nl2cache;
|
|
|
|
/*
|
|
* Recompute the stashed list of l2cache devices, with status
|
|
* information this time.
|
|
*/
|
|
VERIFY(nvlist_remove(sav->sav_config, ZPOOL_CONFIG_L2CACHE,
|
|
DATA_TYPE_NVLIST_ARRAY) == 0);
|
|
|
|
if (sav->sav_count > 0)
|
|
l2cache = kmem_alloc(sav->sav_count * sizeof (void *),
|
|
KM_SLEEP);
|
|
for (i = 0; i < sav->sav_count; i++)
|
|
l2cache[i] = vdev_config_generate(spa,
|
|
sav->sav_vdevs[i], B_TRUE, VDEV_CONFIG_L2CACHE);
|
|
VERIFY(nvlist_add_nvlist_array(sav->sav_config,
|
|
ZPOOL_CONFIG_L2CACHE, l2cache, sav->sav_count) == 0);
|
|
|
|
out:
|
|
/*
|
|
* Purge vdevs that were dropped
|
|
*/
|
|
for (i = 0; i < oldnvdevs; i++) {
|
|
uint64_t pool;
|
|
|
|
vd = oldvdevs[i];
|
|
if (vd != NULL) {
|
|
ASSERT(vd->vdev_isl2cache);
|
|
|
|
if (spa_l2cache_exists(vd->vdev_guid, &pool) &&
|
|
pool != 0ULL && l2arc_vdev_present(vd))
|
|
l2arc_remove_vdev(vd);
|
|
vdev_clear_stats(vd);
|
|
vdev_free(vd);
|
|
}
|
|
}
|
|
|
|
if (oldvdevs)
|
|
kmem_free(oldvdevs, oldnvdevs * sizeof (void *));
|
|
|
|
for (i = 0; i < sav->sav_count; i++)
|
|
nvlist_free(l2cache[i]);
|
|
if (sav->sav_count)
|
|
kmem_free(l2cache, sav->sav_count * sizeof (void *));
|
|
}
|
|
|
|
static int
|
|
load_nvlist(spa_t *spa, uint64_t obj, nvlist_t **value)
|
|
{
|
|
dmu_buf_t *db;
|
|
char *packed = NULL;
|
|
size_t nvsize = 0;
|
|
int error;
|
|
*value = NULL;
|
|
|
|
error = dmu_bonus_hold(spa->spa_meta_objset, obj, FTAG, &db);
|
|
if (error)
|
|
return (error);
|
|
|
|
nvsize = *(uint64_t *)db->db_data;
|
|
dmu_buf_rele(db, FTAG);
|
|
|
|
packed = vmem_alloc(nvsize, KM_SLEEP);
|
|
error = dmu_read(spa->spa_meta_objset, obj, 0, nvsize, packed,
|
|
DMU_READ_PREFETCH);
|
|
if (error == 0)
|
|
error = nvlist_unpack(packed, nvsize, value, 0);
|
|
vmem_free(packed, nvsize);
|
|
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Concrete top-level vdevs that are not missing and are not logs. At every
|
|
* spa_sync we write new uberblocks to at least SPA_SYNC_MIN_VDEVS core tvds.
|
|
*/
|
|
static uint64_t
|
|
spa_healthy_core_tvds(spa_t *spa)
|
|
{
|
|
vdev_t *rvd = spa->spa_root_vdev;
|
|
uint64_t tvds = 0;
|
|
|
|
for (uint64_t i = 0; i < rvd->vdev_children; i++) {
|
|
vdev_t *vd = rvd->vdev_child[i];
|
|
if (vd->vdev_islog)
|
|
continue;
|
|
if (vdev_is_concrete(vd) && !vdev_is_dead(vd))
|
|
tvds++;
|
|
}
|
|
|
|
return (tvds);
|
|
}
|
|
|
|
/*
|
|
* Checks to see if the given vdev could not be opened, in which case we post a
|
|
* sysevent to notify the autoreplace code that the device has been removed.
|
|
*/
|
|
static void
|
|
spa_check_removed(vdev_t *vd)
|
|
{
|
|
for (uint64_t c = 0; c < vd->vdev_children; c++)
|
|
spa_check_removed(vd->vdev_child[c]);
|
|
|
|
if (vd->vdev_ops->vdev_op_leaf && vdev_is_dead(vd) &&
|
|
vdev_is_concrete(vd)) {
|
|
zfs_post_autoreplace(vd->vdev_spa, vd);
|
|
spa_event_notify(vd->vdev_spa, vd, NULL, ESC_ZFS_VDEV_CHECK);
|
|
}
|
|
}
|
|
|
|
static int
|
|
spa_check_for_missing_logs(spa_t *spa)
|
|
{
|
|
vdev_t *rvd = spa->spa_root_vdev;
|
|
|
|
/*
|
|
* If we're doing a normal import, then build up any additional
|
|
* diagnostic information about missing log devices.
|
|
* We'll pass this up to the user for further processing.
|
|
*/
|
|
if (!(spa->spa_import_flags & ZFS_IMPORT_MISSING_LOG)) {
|
|
nvlist_t **child, *nv;
|
|
uint64_t idx = 0;
|
|
|
|
child = kmem_alloc(rvd->vdev_children * sizeof (nvlist_t *),
|
|
KM_SLEEP);
|
|
VERIFY(nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) == 0);
|
|
|
|
for (uint64_t c = 0; c < rvd->vdev_children; c++) {
|
|
vdev_t *tvd = rvd->vdev_child[c];
|
|
|
|
/*
|
|
* We consider a device as missing only if it failed
|
|
* to open (i.e. offline or faulted is not considered
|
|
* as missing).
|
|
*/
|
|
if (tvd->vdev_islog &&
|
|
tvd->vdev_state == VDEV_STATE_CANT_OPEN) {
|
|
child[idx++] = vdev_config_generate(spa, tvd,
|
|
B_FALSE, VDEV_CONFIG_MISSING);
|
|
}
|
|
}
|
|
|
|
if (idx > 0) {
|
|
fnvlist_add_nvlist_array(nv,
|
|
ZPOOL_CONFIG_CHILDREN, child, idx);
|
|
fnvlist_add_nvlist(spa->spa_load_info,
|
|
ZPOOL_CONFIG_MISSING_DEVICES, nv);
|
|
|
|
for (uint64_t i = 0; i < idx; i++)
|
|
nvlist_free(child[i]);
|
|
}
|
|
nvlist_free(nv);
|
|
kmem_free(child, rvd->vdev_children * sizeof (char **));
|
|
|
|
if (idx > 0) {
|
|
spa_load_failed(spa, "some log devices are missing");
|
|
vdev_dbgmsg_print_tree(rvd, 2);
|
|
return (SET_ERROR(ENXIO));
|
|
}
|
|
} else {
|
|
for (uint64_t c = 0; c < rvd->vdev_children; c++) {
|
|
vdev_t *tvd = rvd->vdev_child[c];
|
|
|
|
if (tvd->vdev_islog &&
|
|
tvd->vdev_state == VDEV_STATE_CANT_OPEN) {
|
|
spa_set_log_state(spa, SPA_LOG_CLEAR);
|
|
spa_load_note(spa, "some log devices are "
|
|
"missing, ZIL is dropped.");
|
|
vdev_dbgmsg_print_tree(rvd, 2);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Check for missing log devices
|
|
*/
|
|
static boolean_t
|
|
spa_check_logs(spa_t *spa)
|
|
{
|
|
boolean_t rv = B_FALSE;
|
|
dsl_pool_t *dp = spa_get_dsl(spa);
|
|
|
|
switch (spa->spa_log_state) {
|
|
default:
|
|
break;
|
|
case SPA_LOG_MISSING:
|
|
/* need to recheck in case slog has been restored */
|
|
case SPA_LOG_UNKNOWN:
|
|
rv = (dmu_objset_find_dp(dp, dp->dp_root_dir_obj,
|
|
zil_check_log_chain, NULL, DS_FIND_CHILDREN) != 0);
|
|
if (rv)
|
|
spa_set_log_state(spa, SPA_LOG_MISSING);
|
|
break;
|
|
}
|
|
return (rv);
|
|
}
|
|
|
|
/*
|
|
* Passivate any log vdevs (note, does not apply to embedded log metaslabs).
|
|
*/
|
|
static boolean_t
|
|
spa_passivate_log(spa_t *spa)
|
|
{
|
|
vdev_t *rvd = spa->spa_root_vdev;
|
|
boolean_t slog_found = B_FALSE;
|
|
|
|
ASSERT(spa_config_held(spa, SCL_ALLOC, RW_WRITER));
|
|
|
|
for (int c = 0; c < rvd->vdev_children; c++) {
|
|
vdev_t *tvd = rvd->vdev_child[c];
|
|
|
|
if (tvd->vdev_islog) {
|
|
ASSERT3P(tvd->vdev_log_mg, ==, NULL);
|
|
metaslab_group_passivate(tvd->vdev_mg);
|
|
slog_found = B_TRUE;
|
|
}
|
|
}
|
|
|
|
return (slog_found);
|
|
}
|
|
|
|
/*
|
|
* Activate any log vdevs (note, does not apply to embedded log metaslabs).
|
|
*/
|
|
static void
|
|
spa_activate_log(spa_t *spa)
|
|
{
|
|
vdev_t *rvd = spa->spa_root_vdev;
|
|
|
|
ASSERT(spa_config_held(spa, SCL_ALLOC, RW_WRITER));
|
|
|
|
for (int c = 0; c < rvd->vdev_children; c++) {
|
|
vdev_t *tvd = rvd->vdev_child[c];
|
|
|
|
if (tvd->vdev_islog) {
|
|
ASSERT3P(tvd->vdev_log_mg, ==, NULL);
|
|
metaslab_group_activate(tvd->vdev_mg);
|
|
}
|
|
}
|
|
}
|
|
|
|
int
|
|
spa_reset_logs(spa_t *spa)
|
|
{
|
|
int error;
|
|
|
|
error = dmu_objset_find(spa_name(spa), zil_reset,
|
|
NULL, DS_FIND_CHILDREN);
|
|
if (error == 0) {
|
|
/*
|
|
* We successfully offlined the log device, sync out the
|
|
* current txg so that the "stubby" block can be removed
|
|
* by zil_sync().
|
|
*/
|
|
txg_wait_synced(spa->spa_dsl_pool, 0);
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
static void
|
|
spa_aux_check_removed(spa_aux_vdev_t *sav)
|
|
{
|
|
for (int i = 0; i < sav->sav_count; i++)
|
|
spa_check_removed(sav->sav_vdevs[i]);
|
|
}
|
|
|
|
void
|
|
spa_claim_notify(zio_t *zio)
|
|
{
|
|
spa_t *spa = zio->io_spa;
|
|
|
|
if (zio->io_error)
|
|
return;
|
|
|
|
mutex_enter(&spa->spa_props_lock); /* any mutex will do */
|
|
if (spa->spa_claim_max_txg < zio->io_bp->blk_birth)
|
|
spa->spa_claim_max_txg = zio->io_bp->blk_birth;
|
|
mutex_exit(&spa->spa_props_lock);
|
|
}
|
|
|
|
typedef struct spa_load_error {
|
|
uint64_t sle_meta_count;
|
|
uint64_t sle_data_count;
|
|
} spa_load_error_t;
|
|
|
|
static void
|
|
spa_load_verify_done(zio_t *zio)
|
|
{
|
|
blkptr_t *bp = zio->io_bp;
|
|
spa_load_error_t *sle = zio->io_private;
|
|
dmu_object_type_t type = BP_GET_TYPE(bp);
|
|
int error = zio->io_error;
|
|
spa_t *spa = zio->io_spa;
|
|
|
|
abd_free(zio->io_abd);
|
|
if (error) {
|
|
if ((BP_GET_LEVEL(bp) != 0 || DMU_OT_IS_METADATA(type)) &&
|
|
type != DMU_OT_INTENT_LOG)
|
|
atomic_inc_64(&sle->sle_meta_count);
|
|
else
|
|
atomic_inc_64(&sle->sle_data_count);
|
|
}
|
|
|
|
mutex_enter(&spa->spa_scrub_lock);
|
|
spa->spa_load_verify_bytes -= BP_GET_PSIZE(bp);
|
|
cv_broadcast(&spa->spa_scrub_io_cv);
|
|
mutex_exit(&spa->spa_scrub_lock);
|
|
}
|
|
|
|
/*
|
|
* Maximum number of inflight bytes is the log2 fraction of the arc size.
|
|
* By default, we set it to 1/16th of the arc.
|
|
*/
|
|
int spa_load_verify_shift = 4;
|
|
int spa_load_verify_metadata = B_TRUE;
|
|
int spa_load_verify_data = B_TRUE;
|
|
|
|
/*ARGSUSED*/
|
|
static int
|
|
spa_load_verify_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
|
|
const zbookmark_phys_t *zb, const dnode_phys_t *dnp, void *arg)
|
|
{
|
|
if (zb->zb_level == ZB_DNODE_LEVEL || BP_IS_HOLE(bp) ||
|
|
BP_IS_EMBEDDED(bp) || BP_IS_REDACTED(bp))
|
|
return (0);
|
|
/*
|
|
* Note: normally this routine will not be called if
|
|
* spa_load_verify_metadata is not set. However, it may be useful
|
|
* to manually set the flag after the traversal has begun.
|
|
*/
|
|
if (!spa_load_verify_metadata)
|
|
return (0);
|
|
if (!BP_IS_METADATA(bp) && !spa_load_verify_data)
|
|
return (0);
|
|
|
|
uint64_t maxinflight_bytes =
|
|
arc_target_bytes() >> spa_load_verify_shift;
|
|
zio_t *rio = arg;
|
|
size_t size = BP_GET_PSIZE(bp);
|
|
|
|
mutex_enter(&spa->spa_scrub_lock);
|
|
while (spa->spa_load_verify_bytes >= maxinflight_bytes)
|
|
cv_wait(&spa->spa_scrub_io_cv, &spa->spa_scrub_lock);
|
|
spa->spa_load_verify_bytes += size;
|
|
mutex_exit(&spa->spa_scrub_lock);
|
|
|
|
zio_nowait(zio_read(rio, spa, bp, abd_alloc_for_io(size, B_FALSE), size,
|
|
spa_load_verify_done, rio->io_private, ZIO_PRIORITY_SCRUB,
|
|
ZIO_FLAG_SPECULATIVE | ZIO_FLAG_CANFAIL |
|
|
ZIO_FLAG_SCRUB | ZIO_FLAG_RAW, zb));
|
|
return (0);
|
|
}
|
|
|
|
/* ARGSUSED */
|
|
static int
|
|
verify_dataset_name_len(dsl_pool_t *dp, dsl_dataset_t *ds, void *arg)
|
|
{
|
|
if (dsl_dataset_namelen(ds) >= ZFS_MAX_DATASET_NAME_LEN)
|
|
return (SET_ERROR(ENAMETOOLONG));
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
spa_load_verify(spa_t *spa)
|
|
{
|
|
zio_t *rio;
|
|
spa_load_error_t sle = { 0 };
|
|
zpool_load_policy_t policy;
|
|
boolean_t verify_ok = B_FALSE;
|
|
int error = 0;
|
|
|
|
zpool_get_load_policy(spa->spa_config, &policy);
|
|
|
|
if (policy.zlp_rewind & ZPOOL_NEVER_REWIND)
|
|
return (0);
|
|
|
|
dsl_pool_config_enter(spa->spa_dsl_pool, FTAG);
|
|
error = dmu_objset_find_dp(spa->spa_dsl_pool,
|
|
spa->spa_dsl_pool->dp_root_dir_obj, verify_dataset_name_len, NULL,
|
|
DS_FIND_CHILDREN);
|
|
dsl_pool_config_exit(spa->spa_dsl_pool, FTAG);
|
|
if (error != 0)
|
|
return (error);
|
|
|
|
rio = zio_root(spa, NULL, &sle,
|
|
ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE);
|
|
|
|
if (spa_load_verify_metadata) {
|
|
if (spa->spa_extreme_rewind) {
|
|
spa_load_note(spa, "performing a complete scan of the "
|
|
"pool since extreme rewind is on. This may take "
|
|
"a very long time.\n (spa_load_verify_data=%u, "
|
|
"spa_load_verify_metadata=%u)",
|
|
spa_load_verify_data, spa_load_verify_metadata);
|
|
}
|
|
|
|
error = traverse_pool(spa, spa->spa_verify_min_txg,
|
|
TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA |
|
|
TRAVERSE_NO_DECRYPT, spa_load_verify_cb, rio);
|
|
}
|
|
|
|
(void) zio_wait(rio);
|
|
ASSERT0(spa->spa_load_verify_bytes);
|
|
|
|
spa->spa_load_meta_errors = sle.sle_meta_count;
|
|
spa->spa_load_data_errors = sle.sle_data_count;
|
|
|
|
if (sle.sle_meta_count != 0 || sle.sle_data_count != 0) {
|
|
spa_load_note(spa, "spa_load_verify found %llu metadata errors "
|
|
"and %llu data errors", (u_longlong_t)sle.sle_meta_count,
|
|
(u_longlong_t)sle.sle_data_count);
|
|
}
|
|
|
|
if (spa_load_verify_dryrun ||
|
|
(!error && sle.sle_meta_count <= policy.zlp_maxmeta &&
|
|
sle.sle_data_count <= policy.zlp_maxdata)) {
|
|
int64_t loss = 0;
|
|
|
|
verify_ok = B_TRUE;
|
|
spa->spa_load_txg = spa->spa_uberblock.ub_txg;
|
|
spa->spa_load_txg_ts = spa->spa_uberblock.ub_timestamp;
|
|
|
|
loss = spa->spa_last_ubsync_txg_ts - spa->spa_load_txg_ts;
|
|
VERIFY(nvlist_add_uint64(spa->spa_load_info,
|
|
ZPOOL_CONFIG_LOAD_TIME, spa->spa_load_txg_ts) == 0);
|
|
VERIFY(nvlist_add_int64(spa->spa_load_info,
|
|
ZPOOL_CONFIG_REWIND_TIME, loss) == 0);
|
|
VERIFY(nvlist_add_uint64(spa->spa_load_info,
|
|
ZPOOL_CONFIG_LOAD_DATA_ERRORS, sle.sle_data_count) == 0);
|
|
} else {
|
|
spa->spa_load_max_txg = spa->spa_uberblock.ub_txg;
|
|
}
|
|
|
|
if (spa_load_verify_dryrun)
|
|
return (0);
|
|
|
|
if (error) {
|
|
if (error != ENXIO && error != EIO)
|
|
error = SET_ERROR(EIO);
|
|
return (error);
|
|
}
|
|
|
|
return (verify_ok ? 0 : EIO);
|
|
}
|
|
|
|
/*
|
|
* Find a value in the pool props object.
|
|
*/
|
|
static void
|
|
spa_prop_find(spa_t *spa, zpool_prop_t prop, uint64_t *val)
|
|
{
|
|
(void) zap_lookup(spa->spa_meta_objset, spa->spa_pool_props_object,
|
|
zpool_prop_to_name(prop), sizeof (uint64_t), 1, val);
|
|
}
|
|
|
|
/*
|
|
* Find a value in the pool directory object.
|
|
*/
|
|
static int
|
|
spa_dir_prop(spa_t *spa, const char *name, uint64_t *val, boolean_t log_enoent)
|
|
{
|
|
int error = zap_lookup(spa->spa_meta_objset, DMU_POOL_DIRECTORY_OBJECT,
|
|
name, sizeof (uint64_t), 1, val);
|
|
|
|
if (error != 0 && (error != ENOENT || log_enoent)) {
|
|
spa_load_failed(spa, "couldn't get '%s' value in MOS directory "
|
|
"[error=%d]", name, error);
|
|
}
|
|
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
spa_vdev_err(vdev_t *vdev, vdev_aux_t aux, int err)
|
|
{
|
|
vdev_set_state(vdev, B_TRUE, VDEV_STATE_CANT_OPEN, aux);
|
|
return (SET_ERROR(err));
|
|
}
|
|
|
|
boolean_t
|
|
spa_livelist_delete_check(spa_t *spa)
|
|
{
|
|
return (spa->spa_livelists_to_delete != 0);
|
|
}
|
|
|
|
/* ARGSUSED */
|
|
static boolean_t
|
|
spa_livelist_delete_cb_check(void *arg, zthr_t *z)
|
|
{
|
|
spa_t *spa = arg;
|
|
return (spa_livelist_delete_check(spa));
|
|
}
|
|
|
|
static int
|
|
delete_blkptr_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
|
|
{
|
|
spa_t *spa = arg;
|
|
zio_free(spa, tx->tx_txg, bp);
|
|
dsl_dir_diduse_space(tx->tx_pool->dp_free_dir, DD_USED_HEAD,
|
|
-bp_get_dsize_sync(spa, bp),
|
|
-BP_GET_PSIZE(bp), -BP_GET_UCSIZE(bp), tx);
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
dsl_get_next_livelist_obj(objset_t *os, uint64_t zap_obj, uint64_t *llp)
|
|
{
|
|
int err;
|
|
zap_cursor_t zc;
|
|
zap_attribute_t za;
|
|
zap_cursor_init(&zc, os, zap_obj);
|
|
err = zap_cursor_retrieve(&zc, &za);
|
|
zap_cursor_fini(&zc);
|
|
if (err == 0)
|
|
*llp = za.za_first_integer;
|
|
return (err);
|
|
}
|
|
|
|
/*
|
|
* Components of livelist deletion that must be performed in syncing
|
|
* context: freeing block pointers and updating the pool-wide data
|
|
* structures to indicate how much work is left to do
|
|
*/
|
|
typedef struct sublist_delete_arg {
|
|
spa_t *spa;
|
|
dsl_deadlist_t *ll;
|
|
uint64_t key;
|
|
bplist_t *to_free;
|
|
} sublist_delete_arg_t;
|
|
|
|
static void
|
|
sublist_delete_sync(void *arg, dmu_tx_t *tx)
|
|
{
|
|
sublist_delete_arg_t *sda = arg;
|
|
spa_t *spa = sda->spa;
|
|
dsl_deadlist_t *ll = sda->ll;
|
|
uint64_t key = sda->key;
|
|
bplist_t *to_free = sda->to_free;
|
|
|
|
bplist_iterate(to_free, delete_blkptr_cb, spa, tx);
|
|
dsl_deadlist_remove_entry(ll, key, tx);
|
|
}
|
|
|
|
typedef struct livelist_delete_arg {
|
|
spa_t *spa;
|
|
uint64_t ll_obj;
|
|
uint64_t zap_obj;
|
|
} livelist_delete_arg_t;
|
|
|
|
static void
|
|
livelist_delete_sync(void *arg, dmu_tx_t *tx)
|
|
{
|
|
livelist_delete_arg_t *lda = arg;
|
|
spa_t *spa = lda->spa;
|
|
uint64_t ll_obj = lda->ll_obj;
|
|
uint64_t zap_obj = lda->zap_obj;
|
|
objset_t *mos = spa->spa_meta_objset;
|
|
uint64_t count;
|
|
|
|
/* free the livelist and decrement the feature count */
|
|
VERIFY0(zap_remove_int(mos, zap_obj, ll_obj, tx));
|
|
dsl_deadlist_free(mos, ll_obj, tx);
|
|
spa_feature_decr(spa, SPA_FEATURE_LIVELIST, tx);
|
|
VERIFY0(zap_count(mos, zap_obj, &count));
|
|
if (count == 0) {
|
|
/* no more livelists to delete */
|
|
VERIFY0(zap_remove(mos, DMU_POOL_DIRECTORY_OBJECT,
|
|
DMU_POOL_DELETED_CLONES, tx));
|
|
VERIFY0(zap_destroy(mos, zap_obj, tx));
|
|
spa->spa_livelists_to_delete = 0;
|
|
spa_notify_waiters(spa);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Load in the value for the livelist to be removed and open it. Then,
|
|
* load its first sublist and determine which block pointers should actually
|
|
* be freed. Then, call a synctask which performs the actual frees and updates
|
|
* the pool-wide livelist data.
|
|
*/
|
|
/* ARGSUSED */
|
|
static void
|
|
spa_livelist_delete_cb(void *arg, zthr_t *z)
|
|
{
|
|
spa_t *spa = arg;
|
|
uint64_t ll_obj = 0, count;
|
|
objset_t *mos = spa->spa_meta_objset;
|
|
uint64_t zap_obj = spa->spa_livelists_to_delete;
|
|
/*
|
|
* Determine the next livelist to delete. This function should only
|
|
* be called if there is at least one deleted clone.
|
|
*/
|
|
VERIFY0(dsl_get_next_livelist_obj(mos, zap_obj, &ll_obj));
|
|
VERIFY0(zap_count(mos, ll_obj, &count));
|
|
if (count > 0) {
|
|
dsl_deadlist_t *ll;
|
|
dsl_deadlist_entry_t *dle;
|
|
bplist_t to_free;
|
|
ll = kmem_zalloc(sizeof (dsl_deadlist_t), KM_SLEEP);
|
|
dsl_deadlist_open(ll, mos, ll_obj);
|
|
dle = dsl_deadlist_first(ll);
|
|
ASSERT3P(dle, !=, NULL);
|
|
bplist_create(&to_free);
|
|
int err = dsl_process_sub_livelist(&dle->dle_bpobj, &to_free,
|
|
z, NULL);
|
|
if (err == 0) {
|
|
sublist_delete_arg_t sync_arg = {
|
|
.spa = spa,
|
|
.ll = ll,
|
|
.key = dle->dle_mintxg,
|
|
.to_free = &to_free
|
|
};
|
|
zfs_dbgmsg("deleting sublist (id %llu) from"
|
|
" livelist %llu, %lld remaining",
|
|
(u_longlong_t)dle->dle_bpobj.bpo_object,
|
|
(u_longlong_t)ll_obj, (longlong_t)count - 1);
|
|
VERIFY0(dsl_sync_task(spa_name(spa), NULL,
|
|
sublist_delete_sync, &sync_arg, 0,
|
|
ZFS_SPACE_CHECK_DESTROY));
|
|
} else {
|
|
VERIFY3U(err, ==, EINTR);
|
|
}
|
|
bplist_clear(&to_free);
|
|
bplist_destroy(&to_free);
|
|
dsl_deadlist_close(ll);
|
|
kmem_free(ll, sizeof (dsl_deadlist_t));
|
|
} else {
|
|
livelist_delete_arg_t sync_arg = {
|
|
.spa = spa,
|
|
.ll_obj = ll_obj,
|
|
.zap_obj = zap_obj
|
|
};
|
|
zfs_dbgmsg("deletion of livelist %llu completed",
|
|
(u_longlong_t)ll_obj);
|
|
VERIFY0(dsl_sync_task(spa_name(spa), NULL, livelist_delete_sync,
|
|
&sync_arg, 0, ZFS_SPACE_CHECK_DESTROY));
|
|
}
|
|
}
|
|
|
|
static void
|
|
spa_start_livelist_destroy_thread(spa_t *spa)
|
|
{
|
|
ASSERT3P(spa->spa_livelist_delete_zthr, ==, NULL);
|
|
spa->spa_livelist_delete_zthr =
|
|
zthr_create("z_livelist_destroy",
|
|
spa_livelist_delete_cb_check, spa_livelist_delete_cb, spa);
|
|
}
|
|
|
|
typedef struct livelist_new_arg {
|
|
bplist_t *allocs;
|
|
bplist_t *frees;
|
|
} livelist_new_arg_t;
|
|
|
|
static int
|
|
livelist_track_new_cb(void *arg, const blkptr_t *bp, boolean_t bp_freed,
|
|
dmu_tx_t *tx)
|
|
{
|
|
ASSERT(tx == NULL);
|
|
livelist_new_arg_t *lna = arg;
|
|
if (bp_freed) {
|
|
bplist_append(lna->frees, bp);
|
|
} else {
|
|
bplist_append(lna->allocs, bp);
|
|
zfs_livelist_condense_new_alloc++;
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
typedef struct livelist_condense_arg {
|
|
spa_t *spa;
|
|
bplist_t to_keep;
|
|
uint64_t first_size;
|
|
uint64_t next_size;
|
|
} livelist_condense_arg_t;
|
|
|
|
static void
|
|
spa_livelist_condense_sync(void *arg, dmu_tx_t *tx)
|
|
{
|
|
livelist_condense_arg_t *lca = arg;
|
|
spa_t *spa = lca->spa;
|
|
bplist_t new_frees;
|
|
dsl_dataset_t *ds = spa->spa_to_condense.ds;
|
|
|
|
/* Have we been cancelled? */
|
|
if (spa->spa_to_condense.cancelled) {
|
|
zfs_livelist_condense_sync_cancel++;
|
|
goto out;
|
|
}
|
|
|
|
dsl_deadlist_entry_t *first = spa->spa_to_condense.first;
|
|
dsl_deadlist_entry_t *next = spa->spa_to_condense.next;
|
|
dsl_deadlist_t *ll = &ds->ds_dir->dd_livelist;
|
|
|
|
/*
|
|
* It's possible that the livelist was changed while the zthr was
|
|
* running. Therefore, we need to check for new blkptrs in the two
|
|
* entries being condensed and continue to track them in the livelist.
|
|
* Because of the way we handle remapped blkptrs (see dbuf_remap_impl),
|
|
* it's possible that the newly added blkptrs are FREEs or ALLOCs so
|
|
* we need to sort them into two different bplists.
|
|
*/
|
|
uint64_t first_obj = first->dle_bpobj.bpo_object;
|
|
uint64_t next_obj = next->dle_bpobj.bpo_object;
|
|
uint64_t cur_first_size = first->dle_bpobj.bpo_phys->bpo_num_blkptrs;
|
|
uint64_t cur_next_size = next->dle_bpobj.bpo_phys->bpo_num_blkptrs;
|
|
|
|
bplist_create(&new_frees);
|
|
livelist_new_arg_t new_bps = {
|
|
.allocs = &lca->to_keep,
|
|
.frees = &new_frees,
|
|
};
|
|
|
|
if (cur_first_size > lca->first_size) {
|
|
VERIFY0(livelist_bpobj_iterate_from_nofree(&first->dle_bpobj,
|
|
livelist_track_new_cb, &new_bps, lca->first_size));
|
|
}
|
|
if (cur_next_size > lca->next_size) {
|
|
VERIFY0(livelist_bpobj_iterate_from_nofree(&next->dle_bpobj,
|
|
livelist_track_new_cb, &new_bps, lca->next_size));
|
|
}
|
|
|
|
dsl_deadlist_clear_entry(first, ll, tx);
|
|
ASSERT(bpobj_is_empty(&first->dle_bpobj));
|
|
dsl_deadlist_remove_entry(ll, next->dle_mintxg, tx);
|
|
|
|
bplist_iterate(&lca->to_keep, dsl_deadlist_insert_alloc_cb, ll, tx);
|
|
bplist_iterate(&new_frees, dsl_deadlist_insert_free_cb, ll, tx);
|
|
bplist_destroy(&new_frees);
|
|
|
|
char dsname[ZFS_MAX_DATASET_NAME_LEN];
|
|
dsl_dataset_name(ds, dsname);
|
|
zfs_dbgmsg("txg %llu condensing livelist of %s (id %llu), bpobj %llu "
|
|
"(%llu blkptrs) and bpobj %llu (%llu blkptrs) -> bpobj %llu "
|
|
"(%llu blkptrs)", (u_longlong_t)tx->tx_txg, dsname,
|
|
(u_longlong_t)ds->ds_object, (u_longlong_t)first_obj,
|
|
(u_longlong_t)cur_first_size, (u_longlong_t)next_obj,
|
|
(u_longlong_t)cur_next_size,
|
|
(u_longlong_t)first->dle_bpobj.bpo_object,
|
|
(u_longlong_t)first->dle_bpobj.bpo_phys->bpo_num_blkptrs);
|
|
out:
|
|
dmu_buf_rele(ds->ds_dbuf, spa);
|
|
spa->spa_to_condense.ds = NULL;
|
|
bplist_clear(&lca->to_keep);
|
|
bplist_destroy(&lca->to_keep);
|
|
kmem_free(lca, sizeof (livelist_condense_arg_t));
|
|
spa->spa_to_condense.syncing = B_FALSE;
|
|
}
|
|
|
|
static void
|
|
spa_livelist_condense_cb(void *arg, zthr_t *t)
|
|
{
|
|
while (zfs_livelist_condense_zthr_pause &&
|
|
!(zthr_has_waiters(t) || zthr_iscancelled(t)))
|
|
delay(1);
|
|
|
|
spa_t *spa = arg;
|
|
dsl_deadlist_entry_t *first = spa->spa_to_condense.first;
|
|
dsl_deadlist_entry_t *next = spa->spa_to_condense.next;
|
|
uint64_t first_size, next_size;
|
|
|
|
livelist_condense_arg_t *lca =
|
|
kmem_alloc(sizeof (livelist_condense_arg_t), KM_SLEEP);
|
|
bplist_create(&lca->to_keep);
|
|
|
|
/*
|
|
* Process the livelists (matching FREEs and ALLOCs) in open context
|
|
* so we have minimal work in syncing context to condense.
|
|
*
|
|
* We save bpobj sizes (first_size and next_size) to use later in
|
|
* syncing context to determine if entries were added to these sublists
|
|
* while in open context. This is possible because the clone is still
|
|
* active and open for normal writes and we want to make sure the new,
|
|
* unprocessed blockpointers are inserted into the livelist normally.
|
|
*
|
|
* Note that dsl_process_sub_livelist() both stores the size number of
|
|
* blockpointers and iterates over them while the bpobj's lock held, so
|
|
* the sizes returned to us are consistent which what was actually
|
|
* processed.
|
|
*/
|
|
int err = dsl_process_sub_livelist(&first->dle_bpobj, &lca->to_keep, t,
|
|
&first_size);
|
|
if (err == 0)
|
|
err = dsl_process_sub_livelist(&next->dle_bpobj, &lca->to_keep,
|
|
t, &next_size);
|
|
|
|
if (err == 0) {
|
|
while (zfs_livelist_condense_sync_pause &&
|
|
!(zthr_has_waiters(t) || zthr_iscancelled(t)))
|
|
delay(1);
|
|
|
|
dmu_tx_t *tx = dmu_tx_create_dd(spa_get_dsl(spa)->dp_mos_dir);
|
|
dmu_tx_mark_netfree(tx);
|
|
dmu_tx_hold_space(tx, 1);
|
|
err = dmu_tx_assign(tx, TXG_NOWAIT | TXG_NOTHROTTLE);
|
|
if (err == 0) {
|
|
/*
|
|
* Prevent the condense zthr restarting before
|
|
* the synctask completes.
|
|
*/
|
|
spa->spa_to_condense.syncing = B_TRUE;
|
|
lca->spa = spa;
|
|
lca->first_size = first_size;
|
|
lca->next_size = next_size;
|
|
dsl_sync_task_nowait(spa_get_dsl(spa),
|
|
spa_livelist_condense_sync, lca, tx);
|
|
dmu_tx_commit(tx);
|
|
return;
|
|
}
|
|
}
|
|
/*
|
|
* Condensing can not continue: either it was externally stopped or
|
|
* we were unable to assign to a tx because the pool has run out of
|
|
* space. In the second case, we'll just end up trying to condense
|
|
* again in a later txg.
|
|
*/
|
|
ASSERT(err != 0);
|
|
bplist_clear(&lca->to_keep);
|
|
bplist_destroy(&lca->to_keep);
|
|
kmem_free(lca, sizeof (livelist_condense_arg_t));
|
|
dmu_buf_rele(spa->spa_to_condense.ds->ds_dbuf, spa);
|
|
spa->spa_to_condense.ds = NULL;
|
|
if (err == EINTR)
|
|
zfs_livelist_condense_zthr_cancel++;
|
|
}
|
|
|
|
/* ARGSUSED */
|
|
/*
|
|
* Check that there is something to condense but that a condense is not
|
|
* already in progress and that condensing has not been cancelled.
|
|
*/
|
|
static boolean_t
|
|
spa_livelist_condense_cb_check(void *arg, zthr_t *z)
|
|
{
|
|
spa_t *spa = arg;
|
|
if ((spa->spa_to_condense.ds != NULL) &&
|
|
(spa->spa_to_condense.syncing == B_FALSE) &&
|
|
(spa->spa_to_condense.cancelled == B_FALSE)) {
|
|
return (B_TRUE);
|
|
}
|
|
return (B_FALSE);
|
|
}
|
|
|
|
static void
|
|
spa_start_livelist_condensing_thread(spa_t *spa)
|
|
{
|
|
spa->spa_to_condense.ds = NULL;
|
|
spa->spa_to_condense.first = NULL;
|
|
spa->spa_to_condense.next = NULL;
|
|
spa->spa_to_condense.syncing = B_FALSE;
|
|
spa->spa_to_condense.cancelled = B_FALSE;
|
|
|
|
ASSERT3P(spa->spa_livelist_condense_zthr, ==, NULL);
|
|
spa->spa_livelist_condense_zthr =
|
|
zthr_create("z_livelist_condense",
|
|
spa_livelist_condense_cb_check,
|
|
spa_livelist_condense_cb, spa);
|
|
}
|
|
|
|
static void
|
|
spa_spawn_aux_threads(spa_t *spa)
|
|
{
|
|
ASSERT(spa_writeable(spa));
|
|
|
|
ASSERT(MUTEX_HELD(&spa_namespace_lock));
|
|
|
|
spa_start_indirect_condensing_thread(spa);
|
|
spa_start_livelist_destroy_thread(spa);
|
|
spa_start_livelist_condensing_thread(spa);
|
|
|
|
ASSERT3P(spa->spa_checkpoint_discard_zthr, ==, NULL);
|
|
spa->spa_checkpoint_discard_zthr =
|
|
zthr_create("z_checkpoint_discard",
|
|
spa_checkpoint_discard_thread_check,
|
|
spa_checkpoint_discard_thread, spa);
|
|
}
|
|
|
|
/*
|
|
* Fix up config after a partly-completed split. This is done with the
|
|
* ZPOOL_CONFIG_SPLIT nvlist. Both the splitting pool and the split-off
|
|
* pool have that entry in their config, but only the splitting one contains
|
|
* a list of all the guids of the vdevs that are being split off.
|
|
*
|
|
* This function determines what to do with that list: either rejoin
|
|
* all the disks to the pool, or complete the splitting process. To attempt
|
|
* the rejoin, each disk that is offlined is marked online again, and
|
|
* we do a reopen() call. If the vdev label for every disk that was
|
|
* marked online indicates it was successfully split off (VDEV_AUX_SPLIT_POOL)
|
|
* then we call vdev_split() on each disk, and complete the split.
|
|
*
|
|
* Otherwise we leave the config alone, with all the vdevs in place in
|
|
* the original pool.
|
|
*/
|
|
static void
|
|
spa_try_repair(spa_t *spa, nvlist_t *config)
|
|
{
|
|
uint_t extracted;
|
|
uint64_t *glist;
|
|
uint_t i, gcount;
|
|
nvlist_t *nvl;
|
|
vdev_t **vd;
|
|
boolean_t attempt_reopen;
|
|
|
|
if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_SPLIT, &nvl) != 0)
|
|
return;
|
|
|
|
/* check that the config is complete */
|
|
if (nvlist_lookup_uint64_array(nvl, ZPOOL_CONFIG_SPLIT_LIST,
|
|
&glist, &gcount) != 0)
|
|
return;
|
|
|
|
vd = kmem_zalloc(gcount * sizeof (vdev_t *), KM_SLEEP);
|
|
|
|
/* attempt to online all the vdevs & validate */
|
|
attempt_reopen = B_TRUE;
|
|
for (i = 0; i < gcount; i++) {
|
|
if (glist[i] == 0) /* vdev is hole */
|
|
continue;
|
|
|
|
vd[i] = spa_lookup_by_guid(spa, glist[i], B_FALSE);
|
|
if (vd[i] == NULL) {
|
|
/*
|
|
* Don't bother attempting to reopen the disks;
|
|
* just do the split.
|
|
*/
|
|
attempt_reopen = B_FALSE;
|
|
} else {
|
|
/* attempt to re-online it */
|
|
vd[i]->vdev_offline = B_FALSE;
|
|
}
|
|
}
|
|
|
|
if (attempt_reopen) {
|
|
vdev_reopen(spa->spa_root_vdev);
|
|
|
|
/* check each device to see what state it's in */
|
|
for (extracted = 0, i = 0; i < gcount; i++) {
|
|
if (vd[i] != NULL &&
|
|
vd[i]->vdev_stat.vs_aux != VDEV_AUX_SPLIT_POOL)
|
|
break;
|
|
++extracted;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* If every disk has been moved to the new pool, or if we never
|
|
* even attempted to look at them, then we split them off for
|
|
* good.
|
|
*/
|
|
if (!attempt_reopen || gcount == extracted) {
|
|
for (i = 0; i < gcount; i++)
|
|
if (vd[i] != NULL)
|
|
vdev_split(vd[i]);
|
|
vdev_reopen(spa->spa_root_vdev);
|
|
}
|
|
|
|
kmem_free(vd, gcount * sizeof (vdev_t *));
|
|
}
|
|
|
|
static int
|
|
spa_load(spa_t *spa, spa_load_state_t state, spa_import_type_t type)
|
|
{
|
|
char *ereport = FM_EREPORT_ZFS_POOL;
|
|
int error;
|
|
|
|
spa->spa_load_state = state;
|
|
(void) spa_import_progress_set_state(spa_guid(spa),
|
|
spa_load_state(spa));
|
|
|
|
gethrestime(&spa->spa_loaded_ts);
|
|
error = spa_load_impl(spa, type, &ereport);
|
|
|
|
/*
|
|
* Don't count references from objsets that are already closed
|
|
* and are making their way through the eviction process.
|
|
*/
|
|
spa_evicting_os_wait(spa);
|
|
spa->spa_minref = zfs_refcount_count(&spa->spa_refcount);
|
|
if (error) {
|
|
if (error != EEXIST) {
|
|
spa->spa_loaded_ts.tv_sec = 0;
|
|
spa->spa_loaded_ts.tv_nsec = 0;
|
|
}
|
|
if (error != EBADF) {
|
|
(void) zfs_ereport_post(ereport, spa,
|
|
NULL, NULL, NULL, 0);
|
|
}
|
|
}
|
|
spa->spa_load_state = error ? SPA_LOAD_ERROR : SPA_LOAD_NONE;
|
|
spa->spa_ena = 0;
|
|
|
|
(void) spa_import_progress_set_state(spa_guid(spa),
|
|
spa_load_state(spa));
|
|
|
|
return (error);
|
|
}
|
|
|
|
#ifdef ZFS_DEBUG
|
|
/*
|
|
* Count the number of per-vdev ZAPs associated with all of the vdevs in the
|
|
* vdev tree rooted in the given vd, and ensure that each ZAP is present in the
|
|
* spa's per-vdev ZAP list.
|
|
*/
|
|
static uint64_t
|
|
vdev_count_verify_zaps(vdev_t *vd)
|
|
{
|
|
spa_t *spa = vd->vdev_spa;
|
|
uint64_t total = 0;
|
|
|
|
if (vd->vdev_top_zap != 0) {
|
|
total++;
|
|
ASSERT0(zap_lookup_int(spa->spa_meta_objset,
|
|
spa->spa_all_vdev_zaps, vd->vdev_top_zap));
|
|
}
|
|
if (vd->vdev_leaf_zap != 0) {
|
|
total++;
|
|
ASSERT0(zap_lookup_int(spa->spa_meta_objset,
|
|
spa->spa_all_vdev_zaps, vd->vdev_leaf_zap));
|
|
}
|
|
|
|
for (uint64_t i = 0; i < vd->vdev_children; i++) {
|
|
total += vdev_count_verify_zaps(vd->vdev_child[i]);
|
|
}
|
|
|
|
return (total);
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Determine whether the activity check is required.
|
|
*/
|
|
static boolean_t
|
|
spa_activity_check_required(spa_t *spa, uberblock_t *ub, nvlist_t *label,
|
|
nvlist_t *config)
|
|
{
|
|
uint64_t state = 0;
|
|
uint64_t hostid = 0;
|
|
uint64_t tryconfig_txg = 0;
|
|
uint64_t tryconfig_timestamp = 0;
|
|
uint16_t tryconfig_mmp_seq = 0;
|
|
nvlist_t *nvinfo;
|
|
|
|
if (nvlist_exists(config, ZPOOL_CONFIG_LOAD_INFO)) {
|
|
nvinfo = fnvlist_lookup_nvlist(config, ZPOOL_CONFIG_LOAD_INFO);
|
|
(void) nvlist_lookup_uint64(nvinfo, ZPOOL_CONFIG_MMP_TXG,
|
|
&tryconfig_txg);
|
|
(void) nvlist_lookup_uint64(config, ZPOOL_CONFIG_TIMESTAMP,
|
|
&tryconfig_timestamp);
|
|
(void) nvlist_lookup_uint16(nvinfo, ZPOOL_CONFIG_MMP_SEQ,
|
|
&tryconfig_mmp_seq);
|
|
}
|
|
|
|
(void) nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_STATE, &state);
|
|
|
|
/*
|
|
* Disable the MMP activity check - This is used by zdb which
|
|
* is intended to be used on potentially active pools.
|
|
*/
|
|
if (spa->spa_import_flags & ZFS_IMPORT_SKIP_MMP)
|
|
return (B_FALSE);
|
|
|
|
/*
|
|
* Skip the activity check when the MMP feature is disabled.
|
|
*/
|
|
if (ub->ub_mmp_magic == MMP_MAGIC && ub->ub_mmp_delay == 0)
|
|
return (B_FALSE);
|
|
|
|
/*
|
|
* If the tryconfig_ values are nonzero, they are the results of an
|
|
* earlier tryimport. If they all match the uberblock we just found,
|
|
* then the pool has not changed and we return false so we do not test
|
|
* a second time.
|
|
*/
|
|
if (tryconfig_txg && tryconfig_txg == ub->ub_txg &&
|
|
tryconfig_timestamp && tryconfig_timestamp == ub->ub_timestamp &&
|
|
tryconfig_mmp_seq && tryconfig_mmp_seq ==
|
|
(MMP_SEQ_VALID(ub) ? MMP_SEQ(ub) : 0))
|
|
return (B_FALSE);
|
|
|
|
/*
|
|
* Allow the activity check to be skipped when importing the pool
|
|
* on the same host which last imported it. Since the hostid from
|
|
* configuration may be stale use the one read from the label.
|
|
*/
|
|
if (nvlist_exists(label, ZPOOL_CONFIG_HOSTID))
|
|
hostid = fnvlist_lookup_uint64(label, ZPOOL_CONFIG_HOSTID);
|
|
|
|
if (hostid == spa_get_hostid(spa))
|
|
return (B_FALSE);
|
|
|
|
/*
|
|
* Skip the activity test when the pool was cleanly exported.
|
|
*/
|
|
if (state != POOL_STATE_ACTIVE)
|
|
return (B_FALSE);
|
|
|
|
return (B_TRUE);
|
|
}
|
|
|
|
/*
|
|
* Nanoseconds the activity check must watch for changes on-disk.
|
|
*/
|
|
static uint64_t
|
|
spa_activity_check_duration(spa_t *spa, uberblock_t *ub)
|
|
{
|
|
uint64_t import_intervals = MAX(zfs_multihost_import_intervals, 1);
|
|
uint64_t multihost_interval = MSEC2NSEC(
|
|
MMP_INTERVAL_OK(zfs_multihost_interval));
|
|
uint64_t import_delay = MAX(NANOSEC, import_intervals *
|
|
multihost_interval);
|
|
|
|
/*
|
|
* Local tunables determine a minimum duration except for the case
|
|
* where we know when the remote host will suspend the pool if MMP
|
|
* writes do not land.
|
|
*
|
|
* See Big Theory comment at the top of mmp.c for the reasoning behind
|
|
* these cases and times.
|
|
*/
|
|
|
|
ASSERT(MMP_IMPORT_SAFETY_FACTOR >= 100);
|
|
|
|
if (MMP_INTERVAL_VALID(ub) && MMP_FAIL_INT_VALID(ub) &&
|
|
MMP_FAIL_INT(ub) > 0) {
|
|
|
|
/* MMP on remote host will suspend pool after failed writes */
|
|
import_delay = MMP_FAIL_INT(ub) * MSEC2NSEC(MMP_INTERVAL(ub)) *
|
|
MMP_IMPORT_SAFETY_FACTOR / 100;
|
|
|
|
zfs_dbgmsg("fail_intvals>0 import_delay=%llu ub_mmp "
|
|
"mmp_fails=%llu ub_mmp mmp_interval=%llu "
|
|
"import_intervals=%llu", (u_longlong_t)import_delay,
|
|
(u_longlong_t)MMP_FAIL_INT(ub),
|
|
(u_longlong_t)MMP_INTERVAL(ub),
|
|
(u_longlong_t)import_intervals);
|
|
|
|
} else if (MMP_INTERVAL_VALID(ub) && MMP_FAIL_INT_VALID(ub) &&
|
|
MMP_FAIL_INT(ub) == 0) {
|
|
|
|
/* MMP on remote host will never suspend pool */
|
|
import_delay = MAX(import_delay, (MSEC2NSEC(MMP_INTERVAL(ub)) +
|
|
ub->ub_mmp_delay) * import_intervals);
|
|
|
|
zfs_dbgmsg("fail_intvals=0 import_delay=%llu ub_mmp "
|
|
"mmp_interval=%llu ub_mmp_delay=%llu "
|
|
"import_intervals=%llu", (u_longlong_t)import_delay,
|
|
(u_longlong_t)MMP_INTERVAL(ub),
|
|
(u_longlong_t)ub->ub_mmp_delay,
|
|
(u_longlong_t)import_intervals);
|
|
|
|
} else if (MMP_VALID(ub)) {
|
|
/*
|
|
* zfs-0.7 compatibility case
|
|
*/
|
|
|
|
import_delay = MAX(import_delay, (multihost_interval +
|
|
ub->ub_mmp_delay) * import_intervals);
|
|
|
|
zfs_dbgmsg("import_delay=%llu ub_mmp_delay=%llu "
|
|
"import_intervals=%llu leaves=%u",
|
|
(u_longlong_t)import_delay,
|
|
(u_longlong_t)ub->ub_mmp_delay,
|
|
(u_longlong_t)import_intervals,
|
|
vdev_count_leaves(spa));
|
|
} else {
|
|
/* Using local tunings is the only reasonable option */
|
|
zfs_dbgmsg("pool last imported on non-MMP aware "
|
|
"host using import_delay=%llu multihost_interval=%llu "
|
|
"import_intervals=%llu", (u_longlong_t)import_delay,
|
|
(u_longlong_t)multihost_interval,
|
|
(u_longlong_t)import_intervals);
|
|
}
|
|
|
|
return (import_delay);
|
|
}
|
|
|
|
/*
|
|
* Perform the import activity check. If the user canceled the import or
|
|
* we detected activity then fail.
|
|
*/
|
|
static int
|
|
spa_activity_check(spa_t *spa, uberblock_t *ub, nvlist_t *config)
|
|
{
|
|
uint64_t txg = ub->ub_txg;
|
|
uint64_t timestamp = ub->ub_timestamp;
|
|
uint64_t mmp_config = ub->ub_mmp_config;
|
|
uint16_t mmp_seq = MMP_SEQ_VALID(ub) ? MMP_SEQ(ub) : 0;
|
|
uint64_t import_delay;
|
|
hrtime_t import_expire;
|
|
nvlist_t *mmp_label = NULL;
|
|
vdev_t *rvd = spa->spa_root_vdev;
|
|
kcondvar_t cv;
|
|
kmutex_t mtx;
|
|
int error = 0;
|
|
|
|
cv_init(&cv, NULL, CV_DEFAULT, NULL);
|
|
mutex_init(&mtx, NULL, MUTEX_DEFAULT, NULL);
|
|
mutex_enter(&mtx);
|
|
|
|
/*
|
|
* If ZPOOL_CONFIG_MMP_TXG is present an activity check was performed
|
|
* during the earlier tryimport. If the txg recorded there is 0 then
|
|
* the pool is known to be active on another host.
|
|
*
|
|
* Otherwise, the pool might be in use on another host. Check for
|
|
* changes in the uberblocks on disk if necessary.
|
|
*/
|
|
if (nvlist_exists(config, ZPOOL_CONFIG_LOAD_INFO)) {
|
|
nvlist_t *nvinfo = fnvlist_lookup_nvlist(config,
|
|
ZPOOL_CONFIG_LOAD_INFO);
|
|
|
|
if (nvlist_exists(nvinfo, ZPOOL_CONFIG_MMP_TXG) &&
|
|
fnvlist_lookup_uint64(nvinfo, ZPOOL_CONFIG_MMP_TXG) == 0) {
|
|
vdev_uberblock_load(rvd, ub, &mmp_label);
|
|
error = SET_ERROR(EREMOTEIO);
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
import_delay = spa_activity_check_duration(spa, ub);
|
|
|
|
/* Add a small random factor in case of simultaneous imports (0-25%) */
|
|
import_delay += import_delay * random_in_range(250) / 1000;
|
|
|
|
import_expire = gethrtime() + import_delay;
|
|
|
|
while (gethrtime() < import_expire) {
|
|
(void) spa_import_progress_set_mmp_check(spa_guid(spa),
|
|
NSEC2SEC(import_expire - gethrtime()));
|
|
|
|
vdev_uberblock_load(rvd, ub, &mmp_label);
|
|
|
|
if (txg != ub->ub_txg || timestamp != ub->ub_timestamp ||
|
|
mmp_seq != (MMP_SEQ_VALID(ub) ? MMP_SEQ(ub) : 0)) {
|
|
zfs_dbgmsg("multihost activity detected "
|
|
"txg %llu ub_txg %llu "
|
|
"timestamp %llu ub_timestamp %llu "
|
|
"mmp_config %#llx ub_mmp_config %#llx",
|
|
(u_longlong_t)txg, (u_longlong_t)ub->ub_txg,
|
|
(u_longlong_t)timestamp,
|
|
(u_longlong_t)ub->ub_timestamp,
|
|
(u_longlong_t)mmp_config,
|
|
(u_longlong_t)ub->ub_mmp_config);
|
|
|
|
error = SET_ERROR(EREMOTEIO);
|
|
break;
|
|
}
|
|
|
|
if (mmp_label) {
|
|
nvlist_free(mmp_label);
|
|
mmp_label = NULL;
|
|
}
|
|
|
|
error = cv_timedwait_sig(&cv, &mtx, ddi_get_lbolt() + hz);
|
|
if (error != -1) {
|
|
error = SET_ERROR(EINTR);
|
|
break;
|
|
}
|
|
error = 0;
|
|
}
|
|
|
|
out:
|
|
mutex_exit(&mtx);
|
|
mutex_destroy(&mtx);
|
|
cv_destroy(&cv);
|
|
|
|
/*
|
|
* If the pool is determined to be active store the status in the
|
|
* spa->spa_load_info nvlist. If the remote hostname or hostid are
|
|
* available from configuration read from disk store them as well.
|
|
* This allows 'zpool import' to generate a more useful message.
|
|
*
|
|
* ZPOOL_CONFIG_MMP_STATE - observed pool status (mandatory)
|
|
* ZPOOL_CONFIG_MMP_HOSTNAME - hostname from the active pool
|
|
* ZPOOL_CONFIG_MMP_HOSTID - hostid from the active pool
|
|
*/
|
|
if (error == EREMOTEIO) {
|
|
char *hostname = "<unknown>";
|
|
uint64_t hostid = 0;
|
|
|
|
if (mmp_label) {
|
|
if (nvlist_exists(mmp_label, ZPOOL_CONFIG_HOSTNAME)) {
|
|
hostname = fnvlist_lookup_string(mmp_label,
|
|
ZPOOL_CONFIG_HOSTNAME);
|
|
fnvlist_add_string(spa->spa_load_info,
|
|
ZPOOL_CONFIG_MMP_HOSTNAME, hostname);
|
|
}
|
|
|
|
if (nvlist_exists(mmp_label, ZPOOL_CONFIG_HOSTID)) {
|
|
hostid = fnvlist_lookup_uint64(mmp_label,
|
|
ZPOOL_CONFIG_HOSTID);
|
|
fnvlist_add_uint64(spa->spa_load_info,
|
|
ZPOOL_CONFIG_MMP_HOSTID, hostid);
|
|
}
|
|
}
|
|
|
|
fnvlist_add_uint64(spa->spa_load_info,
|
|
ZPOOL_CONFIG_MMP_STATE, MMP_STATE_ACTIVE);
|
|
fnvlist_add_uint64(spa->spa_load_info,
|
|
ZPOOL_CONFIG_MMP_TXG, 0);
|
|
|
|
error = spa_vdev_err(rvd, VDEV_AUX_ACTIVE, EREMOTEIO);
|
|
}
|
|
|
|
if (mmp_label)
|
|
nvlist_free(mmp_label);
|
|
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
spa_verify_host(spa_t *spa, nvlist_t *mos_config)
|
|
{
|
|
uint64_t hostid;
|
|
char *hostname;
|
|
uint64_t myhostid = 0;
|
|
|
|
if (!spa_is_root(spa) && nvlist_lookup_uint64(mos_config,
|
|
ZPOOL_CONFIG_HOSTID, &hostid) == 0) {
|
|
hostname = fnvlist_lookup_string(mos_config,
|
|
ZPOOL_CONFIG_HOSTNAME);
|
|
|
|
myhostid = zone_get_hostid(NULL);
|
|
|
|
if (hostid != 0 && myhostid != 0 && hostid != myhostid) {
|
|
cmn_err(CE_WARN, "pool '%s' could not be "
|
|
"loaded as it was last accessed by "
|
|
"another system (host: %s hostid: 0x%llx). "
|
|
"See: https://openzfs.github.io/openzfs-docs/msg/"
|
|
"ZFS-8000-EY",
|
|
spa_name(spa), hostname, (u_longlong_t)hostid);
|
|
spa_load_failed(spa, "hostid verification failed: pool "
|
|
"last accessed by host: %s (hostid: 0x%llx)",
|
|
hostname, (u_longlong_t)hostid);
|
|
return (SET_ERROR(EBADF));
|
|
}
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
spa_ld_parse_config(spa_t *spa, spa_import_type_t type)
|
|
{
|
|
int error = 0;
|
|
nvlist_t *nvtree, *nvl, *config = spa->spa_config;
|
|
int parse;
|
|
vdev_t *rvd;
|
|
uint64_t pool_guid;
|
|
char *comment;
|
|
char *compatibility;
|
|
|
|
/*
|
|
* Versioning wasn't explicitly added to the label until later, so if
|
|
* it's not present treat it as the initial version.
|
|
*/
|
|
if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_VERSION,
|
|
&spa->spa_ubsync.ub_version) != 0)
|
|
spa->spa_ubsync.ub_version = SPA_VERSION_INITIAL;
|
|
|
|
if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &pool_guid)) {
|
|
spa_load_failed(spa, "invalid config provided: '%s' missing",
|
|
ZPOOL_CONFIG_POOL_GUID);
|
|
return (SET_ERROR(EINVAL));
|
|
}
|
|
|
|
/*
|
|
* If we are doing an import, ensure that the pool is not already
|
|
* imported by checking if its pool guid already exists in the
|
|
* spa namespace.
|
|
*
|
|
* The only case that we allow an already imported pool to be
|
|
* imported again, is when the pool is checkpointed and we want to
|
|
* look at its checkpointed state from userland tools like zdb.
|
|
*/
|
|
#ifdef _KERNEL
|
|
if ((spa->spa_load_state == SPA_LOAD_IMPORT ||
|
|
spa->spa_load_state == SPA_LOAD_TRYIMPORT) &&
|
|
spa_guid_exists(pool_guid, 0)) {
|
|
#else
|
|
if ((spa->spa_load_state == SPA_LOAD_IMPORT ||
|
|
spa->spa_load_state == SPA_LOAD_TRYIMPORT) &&
|
|
spa_guid_exists(pool_guid, 0) &&
|
|
!spa_importing_readonly_checkpoint(spa)) {
|
|
#endif
|
|
spa_load_failed(spa, "a pool with guid %llu is already open",
|
|
(u_longlong_t)pool_guid);
|
|
return (SET_ERROR(EEXIST));
|
|
}
|
|
|
|
spa->spa_config_guid = pool_guid;
|
|
|
|
nvlist_free(spa->spa_load_info);
|
|
spa->spa_load_info = fnvlist_alloc();
|
|
|
|
ASSERT(spa->spa_comment == NULL);
|
|
if (nvlist_lookup_string(config, ZPOOL_CONFIG_COMMENT, &comment) == 0)
|
|
spa->spa_comment = spa_strdup(comment);
|
|
|
|
ASSERT(spa->spa_compatibility == NULL);
|
|
if (nvlist_lookup_string(config, ZPOOL_CONFIG_COMPATIBILITY,
|
|
&compatibility) == 0)
|
|
spa->spa_compatibility = spa_strdup(compatibility);
|
|
|
|
(void) nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_TXG,
|
|
&spa->spa_config_txg);
|
|
|
|
if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_SPLIT, &nvl) == 0)
|
|
spa->spa_config_splitting = fnvlist_dup(nvl);
|
|
|
|
if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, &nvtree)) {
|
|
spa_load_failed(spa, "invalid config provided: '%s' missing",
|
|
ZPOOL_CONFIG_VDEV_TREE);
|
|
return (SET_ERROR(EINVAL));
|
|
}
|
|
|
|
/*
|
|
* Create "The Godfather" zio to hold all async IOs
|
|
*/
|
|
spa->spa_async_zio_root = kmem_alloc(max_ncpus * sizeof (void *),
|
|
KM_SLEEP);
|
|
for (int i = 0; i < max_ncpus; i++) {
|
|
spa->spa_async_zio_root[i] = zio_root(spa, NULL, NULL,
|
|
ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE |
|
|
ZIO_FLAG_GODFATHER);
|
|
}
|
|
|
|
/*
|
|
* Parse the configuration into a vdev tree. We explicitly set the
|
|
* value that will be returned by spa_version() since parsing the
|
|
* configuration requires knowing the version number.
|
|
*/
|
|
spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER);
|
|
parse = (type == SPA_IMPORT_EXISTING ?
|
|
VDEV_ALLOC_LOAD : VDEV_ALLOC_SPLIT);
|
|
error = spa_config_parse(spa, &rvd, nvtree, NULL, 0, parse);
|
|
spa_config_exit(spa, SCL_ALL, FTAG);
|
|
|
|
if (error != 0) {
|
|
spa_load_failed(spa, "unable to parse config [error=%d]",
|
|
error);
|
|
return (error);
|
|
}
|
|
|
|
ASSERT(spa->spa_root_vdev == rvd);
|
|
ASSERT3U(spa->spa_min_ashift, >=, SPA_MINBLOCKSHIFT);
|
|
ASSERT3U(spa->spa_max_ashift, <=, SPA_MAXBLOCKSHIFT);
|
|
|
|
if (type != SPA_IMPORT_ASSEMBLE) {
|
|
ASSERT(spa_guid(spa) == pool_guid);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Recursively open all vdevs in the vdev tree. This function is called twice:
|
|
* first with the untrusted config, then with the trusted config.
|
|
*/
|
|
static int
|
|
spa_ld_open_vdevs(spa_t *spa)
|
|
{
|
|
int error = 0;
|
|
|
|
/*
|
|
* spa_missing_tvds_allowed defines how many top-level vdevs can be
|
|
* missing/unopenable for the root vdev to be still considered openable.
|
|
*/
|
|
if (spa->spa_trust_config) {
|
|
spa->spa_missing_tvds_allowed = zfs_max_missing_tvds;
|
|
} else if (spa->spa_config_source == SPA_CONFIG_SRC_CACHEFILE) {
|
|
spa->spa_missing_tvds_allowed = zfs_max_missing_tvds_cachefile;
|
|
} else if (spa->spa_config_source == SPA_CONFIG_SRC_SCAN) {
|
|
spa->spa_missing_tvds_allowed = zfs_max_missing_tvds_scan;
|
|
} else {
|
|
spa->spa_missing_tvds_allowed = 0;
|
|
}
|
|
|
|
spa->spa_missing_tvds_allowed =
|
|
MAX(zfs_max_missing_tvds, spa->spa_missing_tvds_allowed);
|
|
|
|
spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER);
|
|
error = vdev_open(spa->spa_root_vdev);
|
|
spa_config_exit(spa, SCL_ALL, FTAG);
|
|
|
|
if (spa->spa_missing_tvds != 0) {
|
|
spa_load_note(spa, "vdev tree has %lld missing top-level "
|
|
"vdevs.", (u_longlong_t)spa->spa_missing_tvds);
|
|
if (spa->spa_trust_config && (spa->spa_mode & SPA_MODE_WRITE)) {
|
|
/*
|
|
* Although theoretically we could allow users to open
|
|
* incomplete pools in RW mode, we'd need to add a lot
|
|
* of extra logic (e.g. adjust pool space to account
|
|
* for missing vdevs).
|
|
* This limitation also prevents users from accidentally
|
|
* opening the pool in RW mode during data recovery and
|
|
* damaging it further.
|
|
*/
|
|
spa_load_note(spa, "pools with missing top-level "
|
|
"vdevs can only be opened in read-only mode.");
|
|
error = SET_ERROR(ENXIO);
|
|
} else {
|
|
spa_load_note(spa, "current settings allow for maximum "
|
|
"%lld missing top-level vdevs at this stage.",
|
|
(u_longlong_t)spa->spa_missing_tvds_allowed);
|
|
}
|
|
}
|
|
if (error != 0) {
|
|
spa_load_failed(spa, "unable to open vdev tree [error=%d]",
|
|
error);
|
|
}
|
|
if (spa->spa_missing_tvds != 0 || error != 0)
|
|
vdev_dbgmsg_print_tree(spa->spa_root_vdev, 2);
|
|
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* We need to validate the vdev labels against the configuration that
|
|
* we have in hand. This function is called twice: first with an untrusted
|
|
* config, then with a trusted config. The validation is more strict when the
|
|
* config is trusted.
|
|
*/
|
|
static int
|
|
spa_ld_validate_vdevs(spa_t *spa)
|
|
{
|
|
int error = 0;
|
|
vdev_t *rvd = spa->spa_root_vdev;
|
|
|
|
spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER);
|
|
error = vdev_validate(rvd);
|
|
spa_config_exit(spa, SCL_ALL, FTAG);
|
|
|
|
if (error != 0) {
|
|
spa_load_failed(spa, "vdev_validate failed [error=%d]", error);
|
|
return (error);
|
|
}
|
|
|
|
if (rvd->vdev_state <= VDEV_STATE_CANT_OPEN) {
|
|
spa_load_failed(spa, "cannot open vdev tree after invalidating "
|
|
"some vdevs");
|
|
vdev_dbgmsg_print_tree(rvd, 2);
|
|
return (SET_ERROR(ENXIO));
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
spa_ld_select_uberblock_done(spa_t *spa, uberblock_t *ub)
|
|
{
|
|
spa->spa_state = POOL_STATE_ACTIVE;
|
|
spa->spa_ubsync = spa->spa_uberblock;
|
|
spa->spa_verify_min_txg = spa->spa_extreme_rewind ?
|
|
TXG_INITIAL - 1 : spa_last_synced_txg(spa) - TXG_DEFER_SIZE - 1;
|
|
spa->spa_first_txg = spa->spa_last_ubsync_txg ?
|
|
spa->spa_last_ubsync_txg : spa_last_synced_txg(spa) + 1;
|
|
spa->spa_claim_max_txg = spa->spa_first_txg;
|
|
spa->spa_prev_software_version = ub->ub_software_version;
|
|
}
|
|
|
|
static int
|
|
spa_ld_select_uberblock(spa_t *spa, spa_import_type_t type)
|
|
{
|
|
vdev_t *rvd = spa->spa_root_vdev;
|
|
nvlist_t *label;
|
|
uberblock_t *ub = &spa->spa_uberblock;
|
|
boolean_t activity_check = B_FALSE;
|
|
|
|
/*
|
|
* If we are opening the checkpointed state of the pool by
|
|
* rewinding to it, at this point we will have written the
|
|
* checkpointed uberblock to the vdev labels, so searching
|
|
* the labels will find the right uberblock. However, if
|
|
* we are opening the checkpointed state read-only, we have
|
|
* not modified the labels. Therefore, we must ignore the
|
|
* labels and continue using the spa_uberblock that was set
|
|
* by spa_ld_checkpoint_rewind.
|
|
*
|
|
* Note that it would be fine to ignore the labels when
|
|
* rewinding (opening writeable) as well. However, if we
|
|
* crash just after writing the labels, we will end up
|
|
* searching the labels. Doing so in the common case means
|
|
* that this code path gets exercised normally, rather than
|
|
* just in the edge case.
|
|
*/
|
|
if (ub->ub_checkpoint_txg != 0 &&
|
|
spa_importing_readonly_checkpoint(spa)) {
|
|
spa_ld_select_uberblock_done(spa, ub);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Find the best uberblock.
|
|
*/
|
|
vdev_uberblock_load(rvd, ub, &label);
|
|
|
|
/*
|
|
* If we weren't able to find a single valid uberblock, return failure.
|
|
*/
|
|
if (ub->ub_txg == 0) {
|
|
nvlist_free(label);
|
|
spa_load_failed(spa, "no valid uberblock found");
|
|
return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, ENXIO));
|
|
}
|
|
|
|
if (spa->spa_load_max_txg != UINT64_MAX) {
|
|
(void) spa_import_progress_set_max_txg(spa_guid(spa),
|
|
(u_longlong_t)spa->spa_load_max_txg);
|
|
}
|
|
spa_load_note(spa, "using uberblock with txg=%llu",
|
|
(u_longlong_t)ub->ub_txg);
|
|
|
|
|
|
/*
|
|
* For pools which have the multihost property on determine if the
|
|
* pool is truly inactive and can be safely imported. Prevent
|
|
* hosts which don't have a hostid set from importing the pool.
|
|
*/
|
|
activity_check = spa_activity_check_required(spa, ub, label,
|
|
spa->spa_config);
|
|
if (activity_check) {
|
|
if (ub->ub_mmp_magic == MMP_MAGIC && ub->ub_mmp_delay &&
|
|
spa_get_hostid(spa) == 0) {
|
|
nvlist_free(label);
|
|
fnvlist_add_uint64(spa->spa_load_info,
|
|
ZPOOL_CONFIG_MMP_STATE, MMP_STATE_NO_HOSTID);
|
|
return (spa_vdev_err(rvd, VDEV_AUX_ACTIVE, EREMOTEIO));
|
|
}
|
|
|
|
int error = spa_activity_check(spa, ub, spa->spa_config);
|
|
if (error) {
|
|
nvlist_free(label);
|
|
return (error);
|
|
}
|
|
|
|
fnvlist_add_uint64(spa->spa_load_info,
|
|
ZPOOL_CONFIG_MMP_STATE, MMP_STATE_INACTIVE);
|
|
fnvlist_add_uint64(spa->spa_load_info,
|
|
ZPOOL_CONFIG_MMP_TXG, ub->ub_txg);
|
|
fnvlist_add_uint16(spa->spa_load_info,
|
|
ZPOOL_CONFIG_MMP_SEQ,
|
|
(MMP_SEQ_VALID(ub) ? MMP_SEQ(ub) : 0));
|
|
}
|
|
|
|
/*
|
|
* If the pool has an unsupported version we can't open it.
|
|
*/
|
|
if (!SPA_VERSION_IS_SUPPORTED(ub->ub_version)) {
|
|
nvlist_free(label);
|
|
spa_load_failed(spa, "version %llu is not supported",
|
|
(u_longlong_t)ub->ub_version);
|
|
return (spa_vdev_err(rvd, VDEV_AUX_VERSION_NEWER, ENOTSUP));
|
|
}
|
|
|
|
if (ub->ub_version >= SPA_VERSION_FEATURES) {
|
|
nvlist_t *features;
|
|
|
|
/*
|
|
* If we weren't able to find what's necessary for reading the
|
|
* MOS in the label, return failure.
|
|
*/
|
|
if (label == NULL) {
|
|
spa_load_failed(spa, "label config unavailable");
|
|
return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA,
|
|
ENXIO));
|
|
}
|
|
|
|
if (nvlist_lookup_nvlist(label, ZPOOL_CONFIG_FEATURES_FOR_READ,
|
|
&features) != 0) {
|
|
nvlist_free(label);
|
|
spa_load_failed(spa, "invalid label: '%s' missing",
|
|
ZPOOL_CONFIG_FEATURES_FOR_READ);
|
|
return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA,
|
|
ENXIO));
|
|
}
|
|
|
|
/*
|
|
* Update our in-core representation with the definitive values
|
|
* from the label.
|
|
*/
|
|
nvlist_free(spa->spa_label_features);
|
|
VERIFY(nvlist_dup(features, &spa->spa_label_features, 0) == 0);
|
|
}
|
|
|
|
nvlist_free(label);
|
|
|
|
/*
|
|
* Look through entries in the label nvlist's features_for_read. If
|
|
* there is a feature listed there which we don't understand then we
|
|
* cannot open a pool.
|
|
*/
|
|
if (ub->ub_version >= SPA_VERSION_FEATURES) {
|
|
nvlist_t *unsup_feat;
|
|
|
|
VERIFY(nvlist_alloc(&unsup_feat, NV_UNIQUE_NAME, KM_SLEEP) ==
|
|
0);
|
|
|
|
for (nvpair_t *nvp = nvlist_next_nvpair(spa->spa_label_features,
|
|
NULL); nvp != NULL;
|
|
nvp = nvlist_next_nvpair(spa->spa_label_features, nvp)) {
|
|
if (!zfeature_is_supported(nvpair_name(nvp))) {
|
|
VERIFY(nvlist_add_string(unsup_feat,
|
|
nvpair_name(nvp), "") == 0);
|
|
}
|
|
}
|
|
|
|
if (!nvlist_empty(unsup_feat)) {
|
|
VERIFY(nvlist_add_nvlist(spa->spa_load_info,
|
|
ZPOOL_CONFIG_UNSUP_FEAT, unsup_feat) == 0);
|
|
nvlist_free(unsup_feat);
|
|
spa_load_failed(spa, "some features are unsupported");
|
|
return (spa_vdev_err(rvd, VDEV_AUX_UNSUP_FEAT,
|
|
ENOTSUP));
|
|
}
|
|
|
|
nvlist_free(unsup_feat);
|
|
}
|
|
|
|
if (type != SPA_IMPORT_ASSEMBLE && spa->spa_config_splitting) {
|
|
spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER);
|
|
spa_try_repair(spa, spa->spa_config);
|
|
spa_config_exit(spa, SCL_ALL, FTAG);
|
|
nvlist_free(spa->spa_config_splitting);
|
|
spa->spa_config_splitting = NULL;
|
|
}
|
|
|
|
/*
|
|
* Initialize internal SPA structures.
|
|
*/
|
|
spa_ld_select_uberblock_done(spa, ub);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
spa_ld_open_rootbp(spa_t *spa)
|
|
{
|
|
int error = 0;
|
|
vdev_t *rvd = spa->spa_root_vdev;
|
|
|
|
error = dsl_pool_init(spa, spa->spa_first_txg, &spa->spa_dsl_pool);
|
|
if (error != 0) {
|
|
spa_load_failed(spa, "unable to open rootbp in dsl_pool_init "
|
|
"[error=%d]", error);
|
|
return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO));
|
|
}
|
|
spa->spa_meta_objset = spa->spa_dsl_pool->dp_meta_objset;
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
spa_ld_trusted_config(spa_t *spa, spa_import_type_t type,
|
|
boolean_t reloading)
|
|
{
|
|
vdev_t *mrvd, *rvd = spa->spa_root_vdev;
|
|
nvlist_t *nv, *mos_config, *policy;
|
|
int error = 0, copy_error;
|
|
uint64_t healthy_tvds, healthy_tvds_mos;
|
|
uint64_t mos_config_txg;
|
|
|
|
if (spa_dir_prop(spa, DMU_POOL_CONFIG, &spa->spa_config_object, B_TRUE)
|
|
!= 0)
|
|
return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO));
|
|
|
|
/*
|
|
* If we're assembling a pool from a split, the config provided is
|
|
* already trusted so there is nothing to do.
|
|
*/
|
|
if (type == SPA_IMPORT_ASSEMBLE)
|
|
return (0);
|
|
|
|
healthy_tvds = spa_healthy_core_tvds(spa);
|
|
|
|
if (load_nvlist(spa, spa->spa_config_object, &mos_config)
|
|
!= 0) {
|
|
spa_load_failed(spa, "unable to retrieve MOS config");
|
|
return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO));
|
|
}
|
|
|
|
/*
|
|
* If we are doing an open, pool owner wasn't verified yet, thus do
|
|
* the verification here.
|
|
*/
|
|
if (spa->spa_load_state == SPA_LOAD_OPEN) {
|
|
error = spa_verify_host(spa, mos_config);
|
|
if (error != 0) {
|
|
nvlist_free(mos_config);
|
|
return (error);
|
|
}
|
|
}
|
|
|
|
nv = fnvlist_lookup_nvlist(mos_config, ZPOOL_CONFIG_VDEV_TREE);
|
|
|
|
spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER);
|
|
|
|
/*
|
|
* Build a new vdev tree from the trusted config
|
|
*/
|
|
error = spa_config_parse(spa, &mrvd, nv, NULL, 0, VDEV_ALLOC_LOAD);
|
|
if (error != 0) {
|
|
nvlist_free(mos_config);
|
|
spa_config_exit(spa, SCL_ALL, FTAG);
|
|
spa_load_failed(spa, "spa_config_parse failed [error=%d]",
|
|
error);
|
|
return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, error));
|
|
}
|
|
|
|
/*
|
|
* Vdev paths in the MOS may be obsolete. If the untrusted config was
|
|
* obtained by scanning /dev/dsk, then it will have the right vdev
|
|
* paths. We update the trusted MOS config with this information.
|
|
* We first try to copy the paths with vdev_copy_path_strict, which
|
|
* succeeds only when both configs have exactly the same vdev tree.
|
|
* If that fails, we fall back to a more flexible method that has a
|
|
* best effort policy.
|
|
*/
|
|
copy_error = vdev_copy_path_strict(rvd, mrvd);
|
|
if (copy_error != 0 || spa_load_print_vdev_tree) {
|
|
spa_load_note(spa, "provided vdev tree:");
|
|
vdev_dbgmsg_print_tree(rvd, 2);
|
|
spa_load_note(spa, "MOS vdev tree:");
|
|
vdev_dbgmsg_print_tree(mrvd, 2);
|
|
}
|
|
if (copy_error != 0) {
|
|
spa_load_note(spa, "vdev_copy_path_strict failed, falling "
|
|
"back to vdev_copy_path_relaxed");
|
|
vdev_copy_path_relaxed(rvd, mrvd);
|
|
}
|
|
|
|
vdev_close(rvd);
|
|
vdev_free(rvd);
|
|
spa->spa_root_vdev = mrvd;
|
|
rvd = mrvd;
|
|
spa_config_exit(spa, SCL_ALL, FTAG);
|
|
|
|
/*
|
|
* We will use spa_config if we decide to reload the spa or if spa_load
|
|
* fails and we rewind. We must thus regenerate the config using the
|
|
* MOS information with the updated paths. ZPOOL_LOAD_POLICY is used to
|
|
* pass settings on how to load the pool and is not stored in the MOS.
|
|
* We copy it over to our new, trusted config.
|
|
*/
|
|
mos_config_txg = fnvlist_lookup_uint64(mos_config,
|
|
ZPOOL_CONFIG_POOL_TXG);
|
|
nvlist_free(mos_config);
|
|
mos_config = spa_config_generate(spa, NULL, mos_config_txg, B_FALSE);
|
|
if (nvlist_lookup_nvlist(spa->spa_config, ZPOOL_LOAD_POLICY,
|
|
&policy) == 0)
|
|
fnvlist_add_nvlist(mos_config, ZPOOL_LOAD_POLICY, policy);
|
|
spa_config_set(spa, mos_config);
|
|
spa->spa_config_source = SPA_CONFIG_SRC_MOS;
|
|
|
|
/*
|
|
* Now that we got the config from the MOS, we should be more strict
|
|
* in checking blkptrs and can make assumptions about the consistency
|
|
* of the vdev tree. spa_trust_config must be set to true before opening
|
|
* vdevs in order for them to be writeable.
|
|
*/
|
|
spa->spa_trust_config = B_TRUE;
|
|
|
|
/*
|
|
* Open and validate the new vdev tree
|
|
*/
|
|
error = spa_ld_open_vdevs(spa);
|
|
if (error != 0)
|
|
return (error);
|
|
|
|
error = spa_ld_validate_vdevs(spa);
|
|
if (error != 0)
|
|
return (error);
|
|
|
|
if (copy_error != 0 || spa_load_print_vdev_tree) {
|
|
spa_load_note(spa, "final vdev tree:");
|
|
vdev_dbgmsg_print_tree(rvd, 2);
|
|
}
|
|
|
|
if (spa->spa_load_state != SPA_LOAD_TRYIMPORT &&
|
|
!spa->spa_extreme_rewind && zfs_max_missing_tvds == 0) {
|
|
/*
|
|
* Sanity check to make sure that we are indeed loading the
|
|
* latest uberblock. If we missed SPA_SYNC_MIN_VDEVS tvds
|
|
* in the config provided and they happened to be the only ones
|
|
* to have the latest uberblock, we could involuntarily perform
|
|
* an extreme rewind.
|
|
*/
|
|
healthy_tvds_mos = spa_healthy_core_tvds(spa);
|
|
if (healthy_tvds_mos - healthy_tvds >=
|
|
SPA_SYNC_MIN_VDEVS) {
|
|
spa_load_note(spa, "config provided misses too many "
|
|
"top-level vdevs compared to MOS (%lld vs %lld). ",
|
|
(u_longlong_t)healthy_tvds,
|
|
(u_longlong_t)healthy_tvds_mos);
|
|
spa_load_note(spa, "vdev tree:");
|
|
vdev_dbgmsg_print_tree(rvd, 2);
|
|
if (reloading) {
|
|
spa_load_failed(spa, "config was already "
|
|
"provided from MOS. Aborting.");
|
|
return (spa_vdev_err(rvd,
|
|
VDEV_AUX_CORRUPT_DATA, EIO));
|
|
}
|
|
spa_load_note(spa, "spa must be reloaded using MOS "
|
|
"config");
|
|
return (SET_ERROR(EAGAIN));
|
|
}
|
|
}
|
|
|
|
error = spa_check_for_missing_logs(spa);
|
|
if (error != 0)
|
|
return (spa_vdev_err(rvd, VDEV_AUX_BAD_GUID_SUM, ENXIO));
|
|
|
|
if (rvd->vdev_guid_sum != spa->spa_uberblock.ub_guid_sum) {
|
|
spa_load_failed(spa, "uberblock guid sum doesn't match MOS "
|
|
"guid sum (%llu != %llu)",
|
|
(u_longlong_t)spa->spa_uberblock.ub_guid_sum,
|
|
(u_longlong_t)rvd->vdev_guid_sum);
|
|
return (spa_vdev_err(rvd, VDEV_AUX_BAD_GUID_SUM,
|
|
ENXIO));
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
spa_ld_open_indirect_vdev_metadata(spa_t *spa)
|
|
{
|
|
int error = 0;
|
|
vdev_t *rvd = spa->spa_root_vdev;
|
|
|
|
/*
|
|
* Everything that we read before spa_remove_init() must be stored
|
|
* on concreted vdevs. Therefore we do this as early as possible.
|
|
*/
|
|
error = spa_remove_init(spa);
|
|
if (error != 0) {
|
|
spa_load_failed(spa, "spa_remove_init failed [error=%d]",
|
|
error);
|
|
return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO));
|
|
}
|
|
|
|
/*
|
|
* Retrieve information needed to condense indirect vdev mappings.
|
|
*/
|
|
error = spa_condense_init(spa);
|
|
if (error != 0) {
|
|
spa_load_failed(spa, "spa_condense_init failed [error=%d]",
|
|
error);
|
|
return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, error));
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
spa_ld_check_features(spa_t *spa, boolean_t *missing_feat_writep)
|
|
{
|
|
int error = 0;
|
|
vdev_t *rvd = spa->spa_root_vdev;
|
|
|
|
if (spa_version(spa) >= SPA_VERSION_FEATURES) {
|
|
boolean_t missing_feat_read = B_FALSE;
|
|
nvlist_t *unsup_feat, *enabled_feat;
|
|
|
|
if (spa_dir_prop(spa, DMU_POOL_FEATURES_FOR_READ,
|
|
&spa->spa_feat_for_read_obj, B_TRUE) != 0) {
|
|
return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO));
|
|
}
|
|
|
|
if (spa_dir_prop(spa, DMU_POOL_FEATURES_FOR_WRITE,
|
|
&spa->spa_feat_for_write_obj, B_TRUE) != 0) {
|
|
return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO));
|
|
}
|
|
|
|
if (spa_dir_prop(spa, DMU_POOL_FEATURE_DESCRIPTIONS,
|
|
&spa->spa_feat_desc_obj, B_TRUE) != 0) {
|
|
return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO));
|
|
}
|
|
|
|
enabled_feat = fnvlist_alloc();
|
|
unsup_feat = fnvlist_alloc();
|
|
|
|
if (!spa_features_check(spa, B_FALSE,
|
|
unsup_feat, enabled_feat))
|
|
missing_feat_read = B_TRUE;
|
|
|
|
if (spa_writeable(spa) ||
|
|
spa->spa_load_state == SPA_LOAD_TRYIMPORT) {
|
|
if (!spa_features_check(spa, B_TRUE,
|
|
unsup_feat, enabled_feat)) {
|
|
*missing_feat_writep = B_TRUE;
|
|
}
|
|
}
|
|
|
|
fnvlist_add_nvlist(spa->spa_load_info,
|
|
ZPOOL_CONFIG_ENABLED_FEAT, enabled_feat);
|
|
|
|
if (!nvlist_empty(unsup_feat)) {
|
|
fnvlist_add_nvlist(spa->spa_load_info,
|
|
ZPOOL_CONFIG_UNSUP_FEAT, unsup_feat);
|
|
}
|
|
|
|
fnvlist_free(enabled_feat);
|
|
fnvlist_free(unsup_feat);
|
|
|
|
if (!missing_feat_read) {
|
|
fnvlist_add_boolean(spa->spa_load_info,
|
|
ZPOOL_CONFIG_CAN_RDONLY);
|
|
}
|
|
|
|
/*
|
|
* If the state is SPA_LOAD_TRYIMPORT, our objective is
|
|
* twofold: to determine whether the pool is available for
|
|
* import in read-write mode and (if it is not) whether the
|
|
* pool is available for import in read-only mode. If the pool
|
|
* is available for import in read-write mode, it is displayed
|
|
* as available in userland; if it is not available for import
|
|
* in read-only mode, it is displayed as unavailable in
|
|
* userland. If the pool is available for import in read-only
|
|
* mode but not read-write mode, it is displayed as unavailable
|
|
* in userland with a special note that the pool is actually
|
|
* available for open in read-only mode.
|
|
*
|
|
* As a result, if the state is SPA_LOAD_TRYIMPORT and we are
|
|
* missing a feature for write, we must first determine whether
|
|
* the pool can be opened read-only before returning to
|
|
* userland in order to know whether to display the
|
|
* abovementioned note.
|
|
*/
|
|
if (missing_feat_read || (*missing_feat_writep &&
|
|
spa_writeable(spa))) {
|
|
spa_load_failed(spa, "pool uses unsupported features");
|
|
return (spa_vdev_err(rvd, VDEV_AUX_UNSUP_FEAT,
|
|
ENOTSUP));
|
|
}
|
|
|
|
/*
|
|
* Load refcounts for ZFS features from disk into an in-memory
|
|
* cache during SPA initialization.
|
|
*/
|
|
for (spa_feature_t i = 0; i < SPA_FEATURES; i++) {
|
|
uint64_t refcount;
|
|
|
|
error = feature_get_refcount_from_disk(spa,
|
|
&spa_feature_table[i], &refcount);
|
|
if (error == 0) {
|
|
spa->spa_feat_refcount_cache[i] = refcount;
|
|
} else if (error == ENOTSUP) {
|
|
spa->spa_feat_refcount_cache[i] =
|
|
SPA_FEATURE_DISABLED;
|
|
} else {
|
|
spa_load_failed(spa, "error getting refcount "
|
|
"for feature %s [error=%d]",
|
|
spa_feature_table[i].fi_guid, error);
|
|
return (spa_vdev_err(rvd,
|
|
VDEV_AUX_CORRUPT_DATA, EIO));
|
|
}
|
|
}
|
|
}
|
|
|
|
if (spa_feature_is_active(spa, SPA_FEATURE_ENABLED_TXG)) {
|
|
if (spa_dir_prop(spa, DMU_POOL_FEATURE_ENABLED_TXG,
|
|
&spa->spa_feat_enabled_txg_obj, B_TRUE) != 0)
|
|
return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO));
|
|
}
|
|
|
|
/*
|
|
* Encryption was added before bookmark_v2, even though bookmark_v2
|
|
* is now a dependency. If this pool has encryption enabled without
|
|
* bookmark_v2, trigger an errata message.
|
|
*/
|
|
if (spa_feature_is_enabled(spa, SPA_FEATURE_ENCRYPTION) &&
|
|
!spa_feature_is_enabled(spa, SPA_FEATURE_BOOKMARK_V2)) {
|
|
spa->spa_errata = ZPOOL_ERRATA_ZOL_8308_ENCRYPTION;
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
spa_ld_load_special_directories(spa_t *spa)
|
|
{
|
|
int error = 0;
|
|
vdev_t *rvd = spa->spa_root_vdev;
|
|
|
|
spa->spa_is_initializing = B_TRUE;
|
|
error = dsl_pool_open(spa->spa_dsl_pool);
|
|
spa->spa_is_initializing = B_FALSE;
|
|
if (error != 0) {
|
|
spa_load_failed(spa, "dsl_pool_open failed [error=%d]", error);
|
|
return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO));
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
spa_ld_get_props(spa_t *spa)
|
|
{
|
|
int error = 0;
|
|
uint64_t obj;
|
|
vdev_t *rvd = spa->spa_root_vdev;
|
|
|
|
/* Grab the checksum salt from the MOS. */
|
|
error = zap_lookup(spa->spa_meta_objset, DMU_POOL_DIRECTORY_OBJECT,
|
|
DMU_POOL_CHECKSUM_SALT, 1,
|
|
sizeof (spa->spa_cksum_salt.zcs_bytes),
|
|
spa->spa_cksum_salt.zcs_bytes);
|
|
if (error == ENOENT) {
|
|
/* Generate a new salt for subsequent use */
|
|
(void) random_get_pseudo_bytes(spa->spa_cksum_salt.zcs_bytes,
|
|
sizeof (spa->spa_cksum_salt.zcs_bytes));
|
|
} else if (error != 0) {
|
|
spa_load_failed(spa, "unable to retrieve checksum salt from "
|
|
"MOS [error=%d]", error);
|
|
return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO));
|
|
}
|
|
|
|
if (spa_dir_prop(spa, DMU_POOL_SYNC_BPOBJ, &obj, B_TRUE) != 0)
|
|
return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO));
|
|
error = bpobj_open(&spa->spa_deferred_bpobj, spa->spa_meta_objset, obj);
|
|
if (error != 0) {
|
|
spa_load_failed(spa, "error opening deferred-frees bpobj "
|
|
"[error=%d]", error);
|
|
return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO));
|
|
}
|
|
|
|
/*
|
|
* Load the bit that tells us to use the new accounting function
|
|
* (raid-z deflation). If we have an older pool, this will not
|
|
* be present.
|
|
*/
|
|
error = spa_dir_prop(spa, DMU_POOL_DEFLATE, &spa->spa_deflate, B_FALSE);
|
|
if (error != 0 && error != ENOENT)
|
|
return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO));
|
|
|
|
error = spa_dir_prop(spa, DMU_POOL_CREATION_VERSION,
|
|
&spa->spa_creation_version, B_FALSE);
|
|
if (error != 0 && error != ENOENT)
|
|
return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO));
|
|
|
|
/*
|
|
* Load the persistent error log. If we have an older pool, this will
|
|
* not be present.
|
|
*/
|
|
error = spa_dir_prop(spa, DMU_POOL_ERRLOG_LAST, &spa->spa_errlog_last,
|
|
B_FALSE);
|
|
if (error != 0 && error != ENOENT)
|
|
return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO));
|
|
|
|
error = spa_dir_prop(spa, DMU_POOL_ERRLOG_SCRUB,
|
|
&spa->spa_errlog_scrub, B_FALSE);
|
|
if (error != 0 && error != ENOENT)
|
|
return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO));
|
|
|
|
/*
|
|
* Load the livelist deletion field. If a livelist is queued for
|
|
* deletion, indicate that in the spa
|
|
*/
|
|
error = spa_dir_prop(spa, DMU_POOL_DELETED_CLONES,
|
|
&spa->spa_livelists_to_delete, B_FALSE);
|
|
if (error != 0 && error != ENOENT)
|
|
return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO));
|
|
|
|
/*
|
|
* Load the history object. If we have an older pool, this
|
|
* will not be present.
|
|
*/
|
|
error = spa_dir_prop(spa, DMU_POOL_HISTORY, &spa->spa_history, B_FALSE);
|
|
if (error != 0 && error != ENOENT)
|
|
return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO));
|
|
|
|
/*
|
|
* Load the per-vdev ZAP map. If we have an older pool, this will not
|
|
* be present; in this case, defer its creation to a later time to
|
|
* avoid dirtying the MOS this early / out of sync context. See
|
|
* spa_sync_config_object.
|
|
*/
|
|
|
|
/* The sentinel is only available in the MOS config. */
|
|
nvlist_t *mos_config;
|
|
if (load_nvlist(spa, spa->spa_config_object, &mos_config) != 0) {
|
|
spa_load_failed(spa, "unable to retrieve MOS config");
|
|
return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO));
|
|
}
|
|
|
|
error = spa_dir_prop(spa, DMU_POOL_VDEV_ZAP_MAP,
|
|
&spa->spa_all_vdev_zaps, B_FALSE);
|
|
|
|
if (error == ENOENT) {
|
|
VERIFY(!nvlist_exists(mos_config,
|
|
ZPOOL_CONFIG_HAS_PER_VDEV_ZAPS));
|
|
spa->spa_avz_action = AVZ_ACTION_INITIALIZE;
|
|
ASSERT0(vdev_count_verify_zaps(spa->spa_root_vdev));
|
|
} else if (error != 0) {
|
|
return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO));
|
|
} else if (!nvlist_exists(mos_config, ZPOOL_CONFIG_HAS_PER_VDEV_ZAPS)) {
|
|
/*
|
|
* An older version of ZFS overwrote the sentinel value, so
|
|
* we have orphaned per-vdev ZAPs in the MOS. Defer their
|
|
* destruction to later; see spa_sync_config_object.
|
|
*/
|
|
spa->spa_avz_action = AVZ_ACTION_DESTROY;
|
|
/*
|
|
* We're assuming that no vdevs have had their ZAPs created
|
|
* before this. Better be sure of it.
|
|
*/
|
|
ASSERT0(vdev_count_verify_zaps(spa->spa_root_vdev));
|
|
}
|
|
nvlist_free(mos_config);
|
|
|
|
spa->spa_delegation = zpool_prop_default_numeric(ZPOOL_PROP_DELEGATION);
|
|
|
|
error = spa_dir_prop(spa, DMU_POOL_PROPS, &spa->spa_pool_props_object,
|
|
B_FALSE);
|
|
if (error && error != ENOENT)
|
|
return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO));
|
|
|
|
if (error == 0) {
|
|
uint64_t autoreplace = 0;
|
|
|
|
spa_prop_find(spa, ZPOOL_PROP_BOOTFS, &spa->spa_bootfs);
|
|
spa_prop_find(spa, ZPOOL_PROP_AUTOREPLACE, &autoreplace);
|
|
spa_prop_find(spa, ZPOOL_PROP_DELEGATION, &spa->spa_delegation);
|
|
spa_prop_find(spa, ZPOOL_PROP_FAILUREMODE, &spa->spa_failmode);
|
|
spa_prop_find(spa, ZPOOL_PROP_AUTOEXPAND, &spa->spa_autoexpand);
|
|
spa_prop_find(spa, ZPOOL_PROP_MULTIHOST, &spa->spa_multihost);
|
|
spa_prop_find(spa, ZPOOL_PROP_AUTOTRIM, &spa->spa_autotrim);
|
|
spa->spa_autoreplace = (autoreplace != 0);
|
|
}
|
|
|
|
/*
|
|
* If we are importing a pool with missing top-level vdevs,
|
|
* we enforce that the pool doesn't panic or get suspended on
|
|
* error since the likelihood of missing data is extremely high.
|
|
*/
|
|
if (spa->spa_missing_tvds > 0 &&
|
|
spa->spa_failmode != ZIO_FAILURE_MODE_CONTINUE &&
|
|
spa->spa_load_state != SPA_LOAD_TRYIMPORT) {
|
|
spa_load_note(spa, "forcing failmode to 'continue' "
|
|
"as some top level vdevs are missing");
|
|
spa->spa_failmode = ZIO_FAILURE_MODE_CONTINUE;
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
spa_ld_open_aux_vdevs(spa_t *spa, spa_import_type_t type)
|
|
{
|
|
int error = 0;
|
|
vdev_t *rvd = spa->spa_root_vdev;
|
|
|
|
/*
|
|
* If we're assembling the pool from the split-off vdevs of
|
|
* an existing pool, we don't want to attach the spares & cache
|
|
* devices.
|
|
*/
|
|
|
|
/*
|
|
* Load any hot spares for this pool.
|
|
*/
|
|
error = spa_dir_prop(spa, DMU_POOL_SPARES, &spa->spa_spares.sav_object,
|
|
B_FALSE);
|
|
if (error != 0 && error != ENOENT)
|
|
return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO));
|
|
if (error == 0 && type != SPA_IMPORT_ASSEMBLE) {
|
|
ASSERT(spa_version(spa) >= SPA_VERSION_SPARES);
|
|
if (load_nvlist(spa, spa->spa_spares.sav_object,
|
|
&spa->spa_spares.sav_config) != 0) {
|
|
spa_load_failed(spa, "error loading spares nvlist");
|
|
return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO));
|
|
}
|
|
|
|
spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER);
|
|
spa_load_spares(spa);
|
|
spa_config_exit(spa, SCL_ALL, FTAG);
|
|
} else if (error == 0) {
|
|
spa->spa_spares.sav_sync = B_TRUE;
|
|
}
|
|
|
|
/*
|
|
* Load any level 2 ARC devices for this pool.
|
|
*/
|
|
error = spa_dir_prop(spa, DMU_POOL_L2CACHE,
|
|
&spa->spa_l2cache.sav_object, B_FALSE);
|
|
if (error != 0 && error != ENOENT)
|
|
return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO));
|
|
if (error == 0 && type != SPA_IMPORT_ASSEMBLE) {
|
|
ASSERT(spa_version(spa) >= SPA_VERSION_L2CACHE);
|
|
if (load_nvlist(spa, spa->spa_l2cache.sav_object,
|
|
&spa->spa_l2cache.sav_config) != 0) {
|
|
spa_load_failed(spa, "error loading l2cache nvlist");
|
|
return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO));
|
|
}
|
|
|
|
spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER);
|
|
spa_load_l2cache(spa);
|
|
spa_config_exit(spa, SCL_ALL, FTAG);
|
|
} else if (error == 0) {
|
|
spa->spa_l2cache.sav_sync = B_TRUE;
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
spa_ld_load_vdev_metadata(spa_t *spa)
|
|
{
|
|
int error = 0;
|
|
vdev_t *rvd = spa->spa_root_vdev;
|
|
|
|
/*
|
|
* If the 'multihost' property is set, then never allow a pool to
|
|
* be imported when the system hostid is zero. The exception to
|
|
* this rule is zdb which is always allowed to access pools.
|
|
*/
|
|
if (spa_multihost(spa) && spa_get_hostid(spa) == 0 &&
|
|
(spa->spa_import_flags & ZFS_IMPORT_SKIP_MMP) == 0) {
|
|
fnvlist_add_uint64(spa->spa_load_info,
|
|
ZPOOL_CONFIG_MMP_STATE, MMP_STATE_NO_HOSTID);
|
|
return (spa_vdev_err(rvd, VDEV_AUX_ACTIVE, EREMOTEIO));
|
|
}
|
|
|
|
/*
|
|
* If the 'autoreplace' property is set, then post a resource notifying
|
|
* the ZFS DE that it should not issue any faults for unopenable
|
|
* devices. We also iterate over the vdevs, and post a sysevent for any
|
|
* unopenable vdevs so that the normal autoreplace handler can take
|
|
* over.
|
|
*/
|
|
if (spa->spa_autoreplace && spa->spa_load_state != SPA_LOAD_TRYIMPORT) {
|
|
spa_check_removed(spa->spa_root_vdev);
|
|
/*
|
|
* For the import case, this is done in spa_import(), because
|
|
* at this point we're using the spare definitions from
|
|
* the MOS config, not necessarily from the userland config.
|
|
*/
|
|
if (spa->spa_load_state != SPA_LOAD_IMPORT) {
|
|
spa_aux_check_removed(&spa->spa_spares);
|
|
spa_aux_check_removed(&spa->spa_l2cache);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Load the vdev metadata such as metaslabs, DTLs, spacemap object, etc.
|
|
*/
|
|
error = vdev_load(rvd);
|
|
if (error != 0) {
|
|
spa_load_failed(spa, "vdev_load failed [error=%d]", error);
|
|
return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, error));
|
|
}
|
|
|
|
error = spa_ld_log_spacemaps(spa);
|
|
if (error != 0) {
|
|
spa_load_failed(spa, "spa_ld_log_sm_data failed [error=%d]",
|
|
error);
|
|
return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, error));
|
|
}
|
|
|
|
/*
|
|
* Propagate the leaf DTLs we just loaded all the way up the vdev tree.
|
|
*/
|
|
spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER);
|
|
vdev_dtl_reassess(rvd, 0, 0, B_FALSE, B_FALSE);
|
|
spa_config_exit(spa, SCL_ALL, FTAG);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
spa_ld_load_dedup_tables(spa_t *spa)
|
|
{
|
|
int error = 0;
|
|
vdev_t *rvd = spa->spa_root_vdev;
|
|
|
|
error = ddt_load(spa);
|
|
if (error != 0) {
|
|
spa_load_failed(spa, "ddt_load failed [error=%d]", error);
|
|
return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO));
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
spa_ld_verify_logs(spa_t *spa, spa_import_type_t type, char **ereport)
|
|
{
|
|
vdev_t *rvd = spa->spa_root_vdev;
|
|
|
|
if (type != SPA_IMPORT_ASSEMBLE && spa_writeable(spa)) {
|
|
boolean_t missing = spa_check_logs(spa);
|
|
if (missing) {
|
|
if (spa->spa_missing_tvds != 0) {
|
|
spa_load_note(spa, "spa_check_logs failed "
|
|
"so dropping the logs");
|
|
} else {
|
|
*ereport = FM_EREPORT_ZFS_LOG_REPLAY;
|
|
spa_load_failed(spa, "spa_check_logs failed");
|
|
return (spa_vdev_err(rvd, VDEV_AUX_BAD_LOG,
|
|
ENXIO));
|
|
}
|
|
}
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
spa_ld_verify_pool_data(spa_t *spa)
|
|
{
|
|
int error = 0;
|
|
vdev_t *rvd = spa->spa_root_vdev;
|
|
|
|
/*
|
|
* We've successfully opened the pool, verify that we're ready
|
|
* to start pushing transactions.
|
|
*/
|
|
if (spa->spa_load_state != SPA_LOAD_TRYIMPORT) {
|
|
error = spa_load_verify(spa);
|
|
if (error != 0) {
|
|
spa_load_failed(spa, "spa_load_verify failed "
|
|
"[error=%d]", error);
|
|
return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA,
|
|
error));
|
|
}
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
spa_ld_claim_log_blocks(spa_t *spa)
|
|
{
|
|
dmu_tx_t *tx;
|
|
dsl_pool_t *dp = spa_get_dsl(spa);
|
|
|
|
/*
|
|
* Claim log blocks that haven't been committed yet.
|
|
* This must all happen in a single txg.
|
|
* Note: spa_claim_max_txg is updated by spa_claim_notify(),
|
|
* invoked from zil_claim_log_block()'s i/o done callback.
|
|
* Price of rollback is that we abandon the log.
|
|
*/
|
|
spa->spa_claiming = B_TRUE;
|
|
|
|
tx = dmu_tx_create_assigned(dp, spa_first_txg(spa));
|
|
(void) dmu_objset_find_dp(dp, dp->dp_root_dir_obj,
|
|
zil_claim, tx, DS_FIND_CHILDREN);
|
|
dmu_tx_commit(tx);
|
|
|
|
spa->spa_claiming = B_FALSE;
|
|
|
|
spa_set_log_state(spa, SPA_LOG_GOOD);
|
|
}
|
|
|
|
static void
|
|
spa_ld_check_for_config_update(spa_t *spa, uint64_t config_cache_txg,
|
|
boolean_t update_config_cache)
|
|
{
|
|
vdev_t *rvd = spa->spa_root_vdev;
|
|
int need_update = B_FALSE;
|
|
|
|
/*
|
|
* If the config cache is stale, or we have uninitialized
|
|
* metaslabs (see spa_vdev_add()), then update the config.
|
|
*
|
|
* If this is a verbatim import, trust the current
|
|
* in-core spa_config and update the disk labels.
|
|
*/
|
|
if (update_config_cache || config_cache_txg != spa->spa_config_txg ||
|
|
spa->spa_load_state == SPA_LOAD_IMPORT ||
|
|
spa->spa_load_state == SPA_LOAD_RECOVER ||
|
|
(spa->spa_import_flags & ZFS_IMPORT_VERBATIM))
|
|
need_update = B_TRUE;
|
|
|
|
for (int c = 0; c < rvd->vdev_children; c++)
|
|
if (rvd->vdev_child[c]->vdev_ms_array == 0)
|
|
need_update = B_TRUE;
|
|
|
|
/*
|
|
* Update the config cache asynchronously in case we're the
|
|
* root pool, in which case the config cache isn't writable yet.
|
|
*/
|
|
if (need_update)
|
|
spa_async_request(spa, SPA_ASYNC_CONFIG_UPDATE);
|
|
}
|
|
|
|
static void
|
|
spa_ld_prepare_for_reload(spa_t *spa)
|
|
{
|
|
spa_mode_t mode = spa->spa_mode;
|
|
int async_suspended = spa->spa_async_suspended;
|
|
|
|
spa_unload(spa);
|
|
spa_deactivate(spa);
|
|
spa_activate(spa, mode);
|
|
|
|
/*
|
|
* We save the value of spa_async_suspended as it gets reset to 0 by
|
|
* spa_unload(). We want to restore it back to the original value before
|
|
* returning as we might be calling spa_async_resume() later.
|
|
*/
|
|
spa->spa_async_suspended = async_suspended;
|
|
}
|
|
|
|
static int
|
|
spa_ld_read_checkpoint_txg(spa_t *spa)
|
|
{
|
|
uberblock_t checkpoint;
|
|
int error = 0;
|
|
|
|
ASSERT0(spa->spa_checkpoint_txg);
|
|
ASSERT(MUTEX_HELD(&spa_namespace_lock));
|
|
|
|
error = zap_lookup(spa->spa_meta_objset, DMU_POOL_DIRECTORY_OBJECT,
|
|
DMU_POOL_ZPOOL_CHECKPOINT, sizeof (uint64_t),
|
|
sizeof (uberblock_t) / sizeof (uint64_t), &checkpoint);
|
|
|
|
if (error == ENOENT)
|
|
return (0);
|
|
|
|
if (error != 0)
|
|
return (error);
|
|
|
|
ASSERT3U(checkpoint.ub_txg, !=, 0);
|
|
ASSERT3U(checkpoint.ub_checkpoint_txg, !=, 0);
|
|
ASSERT3U(checkpoint.ub_timestamp, !=, 0);
|
|
spa->spa_checkpoint_txg = checkpoint.ub_txg;
|
|
spa->spa_checkpoint_info.sci_timestamp = checkpoint.ub_timestamp;
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
spa_ld_mos_init(spa_t *spa, spa_import_type_t type)
|
|
{
|
|
int error = 0;
|
|
|
|
ASSERT(MUTEX_HELD(&spa_namespace_lock));
|
|
ASSERT(spa->spa_config_source != SPA_CONFIG_SRC_NONE);
|
|
|
|
/*
|
|
* Never trust the config that is provided unless we are assembling
|
|
* a pool following a split.
|
|
* This means don't trust blkptrs and the vdev tree in general. This
|
|
* also effectively puts the spa in read-only mode since
|
|
* spa_writeable() checks for spa_trust_config to be true.
|
|
* We will later load a trusted config from the MOS.
|
|
*/
|
|
if (type != SPA_IMPORT_ASSEMBLE)
|
|
spa->spa_trust_config = B_FALSE;
|
|
|
|
/*
|
|
* Parse the config provided to create a vdev tree.
|
|
*/
|
|
error = spa_ld_parse_config(spa, type);
|
|
if (error != 0)
|
|
return (error);
|
|
|
|
spa_import_progress_add(spa);
|
|
|
|
/*
|
|
* Now that we have the vdev tree, try to open each vdev. This involves
|
|
* opening the underlying physical device, retrieving its geometry and
|
|
* probing the vdev with a dummy I/O. The state of each vdev will be set
|
|
* based on the success of those operations. After this we'll be ready
|
|
* to read from the vdevs.
|
|
*/
|
|
error = spa_ld_open_vdevs(spa);
|
|
if (error != 0)
|
|
return (error);
|
|
|
|
/*
|
|
* Read the label of each vdev and make sure that the GUIDs stored
|
|
* there match the GUIDs in the config provided.
|
|
* If we're assembling a new pool that's been split off from an
|
|
* existing pool, the labels haven't yet been updated so we skip
|
|
* validation for now.
|
|
*/
|
|
if (type != SPA_IMPORT_ASSEMBLE) {
|
|
error = spa_ld_validate_vdevs(spa);
|
|
if (error != 0)
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Read all vdev labels to find the best uberblock (i.e. latest,
|
|
* unless spa_load_max_txg is set) and store it in spa_uberblock. We
|
|
* get the list of features required to read blkptrs in the MOS from
|
|
* the vdev label with the best uberblock and verify that our version
|
|
* of zfs supports them all.
|
|
*/
|
|
error = spa_ld_select_uberblock(spa, type);
|
|
if (error != 0)
|
|
return (error);
|
|
|
|
/*
|
|
* Pass that uberblock to the dsl_pool layer which will open the root
|
|
* blkptr. This blkptr points to the latest version of the MOS and will
|
|
* allow us to read its contents.
|
|
*/
|
|
error = spa_ld_open_rootbp(spa);
|
|
if (error != 0)
|
|
return (error);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
spa_ld_checkpoint_rewind(spa_t *spa)
|
|
{
|
|
uberblock_t checkpoint;
|
|
int error = 0;
|
|
|
|
ASSERT(MUTEX_HELD(&spa_namespace_lock));
|
|
ASSERT(spa->spa_import_flags & ZFS_IMPORT_CHECKPOINT);
|
|
|
|
error = zap_lookup(spa->spa_meta_objset, DMU_POOL_DIRECTORY_OBJECT,
|
|
DMU_POOL_ZPOOL_CHECKPOINT, sizeof (uint64_t),
|
|
sizeof (uberblock_t) / sizeof (uint64_t), &checkpoint);
|
|
|
|
if (error != 0) {
|
|
spa_load_failed(spa, "unable to retrieve checkpointed "
|
|
"uberblock from the MOS config [error=%d]", error);
|
|
|
|
if (error == ENOENT)
|
|
error = ZFS_ERR_NO_CHECKPOINT;
|
|
|
|
return (error);
|
|
}
|
|
|
|
ASSERT3U(checkpoint.ub_txg, <, spa->spa_uberblock.ub_txg);
|
|
ASSERT3U(checkpoint.ub_txg, ==, checkpoint.ub_checkpoint_txg);
|
|
|
|
/*
|
|
* We need to update the txg and timestamp of the checkpointed
|
|
* uberblock to be higher than the latest one. This ensures that
|
|
* the checkpointed uberblock is selected if we were to close and
|
|
* reopen the pool right after we've written it in the vdev labels.
|
|
* (also see block comment in vdev_uberblock_compare)
|
|
*/
|
|
checkpoint.ub_txg = spa->spa_uberblock.ub_txg + 1;
|
|
checkpoint.ub_timestamp = gethrestime_sec();
|
|
|
|
/*
|
|
* Set current uberblock to be the checkpointed uberblock.
|
|
*/
|
|
spa->spa_uberblock = checkpoint;
|
|
|
|
/*
|
|
* If we are doing a normal rewind, then the pool is open for
|
|
* writing and we sync the "updated" checkpointed uberblock to
|
|
* disk. Once this is done, we've basically rewound the whole
|
|
* pool and there is no way back.
|
|
*
|
|
* There are cases when we don't want to attempt and sync the
|
|
* checkpointed uberblock to disk because we are opening a
|
|
* pool as read-only. Specifically, verifying the checkpointed
|
|
* state with zdb, and importing the checkpointed state to get
|
|
* a "preview" of its content.
|
|
*/
|
|
if (spa_writeable(spa)) {
|
|
vdev_t *rvd = spa->spa_root_vdev;
|
|
|
|
spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER);
|
|
vdev_t *svd[SPA_SYNC_MIN_VDEVS] = { NULL };
|
|
int svdcount = 0;
|
|
int children = rvd->vdev_children;
|
|
int c0 = random_in_range(children);
|
|
|
|
for (int c = 0; c < children; c++) {
|
|
vdev_t *vd = rvd->vdev_child[(c0 + c) % children];
|
|
|
|
/* Stop when revisiting the first vdev */
|
|
if (c > 0 && svd[0] == vd)
|
|
break;
|
|
|
|
if (vd->vdev_ms_array == 0 || vd->vdev_islog ||
|
|
!vdev_is_concrete(vd))
|
|
continue;
|
|
|
|
svd[svdcount++] = vd;
|
|
if (svdcount == SPA_SYNC_MIN_VDEVS)
|
|
break;
|
|
}
|
|
error = vdev_config_sync(svd, svdcount, spa->spa_first_txg);
|
|
if (error == 0)
|
|
spa->spa_last_synced_guid = rvd->vdev_guid;
|
|
spa_config_exit(spa, SCL_ALL, FTAG);
|
|
|
|
if (error != 0) {
|
|
spa_load_failed(spa, "failed to write checkpointed "
|
|
"uberblock to the vdev labels [error=%d]", error);
|
|
return (error);
|
|
}
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
spa_ld_mos_with_trusted_config(spa_t *spa, spa_import_type_t type,
|
|
boolean_t *update_config_cache)
|
|
{
|
|
int error;
|
|
|
|
/*
|
|
* Parse the config for pool, open and validate vdevs,
|
|
* select an uberblock, and use that uberblock to open
|
|
* the MOS.
|
|
*/
|
|
error = spa_ld_mos_init(spa, type);
|
|
if (error != 0)
|
|
return (error);
|
|
|
|
/*
|
|
* Retrieve the trusted config stored in the MOS and use it to create
|
|
* a new, exact version of the vdev tree, then reopen all vdevs.
|
|
*/
|
|
error = spa_ld_trusted_config(spa, type, B_FALSE);
|
|
if (error == EAGAIN) {
|
|
if (update_config_cache != NULL)
|
|
*update_config_cache = B_TRUE;
|
|
|
|
/*
|
|
* Redo the loading process with the trusted config if it is
|
|
* too different from the untrusted config.
|
|
*/
|
|
spa_ld_prepare_for_reload(spa);
|
|
spa_load_note(spa, "RELOADING");
|
|
error = spa_ld_mos_init(spa, type);
|
|
if (error != 0)
|
|
return (error);
|
|
|
|
error = spa_ld_trusted_config(spa, type, B_TRUE);
|
|
if (error != 0)
|
|
return (error);
|
|
|
|
} else if (error != 0) {
|
|
return (error);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Load an existing storage pool, using the config provided. This config
|
|
* describes which vdevs are part of the pool and is later validated against
|
|
* partial configs present in each vdev's label and an entire copy of the
|
|
* config stored in the MOS.
|
|
*/
|
|
static int
|
|
spa_load_impl(spa_t *spa, spa_import_type_t type, char **ereport)
|
|
{
|
|
int error = 0;
|
|
boolean_t missing_feat_write = B_FALSE;
|
|
boolean_t checkpoint_rewind =
|
|
(spa->spa_import_flags & ZFS_IMPORT_CHECKPOINT);
|
|
boolean_t update_config_cache = B_FALSE;
|
|
|
|
ASSERT(MUTEX_HELD(&spa_namespace_lock));
|
|
ASSERT(spa->spa_config_source != SPA_CONFIG_SRC_NONE);
|
|
|
|
spa_load_note(spa, "LOADING");
|
|
|
|
error = spa_ld_mos_with_trusted_config(spa, type, &update_config_cache);
|
|
if (error != 0)
|
|
return (error);
|
|
|
|
/*
|
|
* If we are rewinding to the checkpoint then we need to repeat
|
|
* everything we've done so far in this function but this time
|
|
* selecting the checkpointed uberblock and using that to open
|
|
* the MOS.
|
|
*/
|
|
if (checkpoint_rewind) {
|
|
/*
|
|
* If we are rewinding to the checkpoint update config cache
|
|
* anyway.
|
|
*/
|
|
update_config_cache = B_TRUE;
|
|
|
|
/*
|
|
* Extract the checkpointed uberblock from the current MOS
|
|
* and use this as the pool's uberblock from now on. If the
|
|
* pool is imported as writeable we also write the checkpoint
|
|
* uberblock to the labels, making the rewind permanent.
|
|
*/
|
|
error = spa_ld_checkpoint_rewind(spa);
|
|
if (error != 0)
|
|
return (error);
|
|
|
|
/*
|
|
* Redo the loading process again with the
|
|
* checkpointed uberblock.
|
|
*/
|
|
spa_ld_prepare_for_reload(spa);
|
|
spa_load_note(spa, "LOADING checkpointed uberblock");
|
|
error = spa_ld_mos_with_trusted_config(spa, type, NULL);
|
|
if (error != 0)
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Retrieve the checkpoint txg if the pool has a checkpoint.
|
|
*/
|
|
error = spa_ld_read_checkpoint_txg(spa);
|
|
if (error != 0)
|
|
return (error);
|
|
|
|
/*
|
|
* Retrieve the mapping of indirect vdevs. Those vdevs were removed
|
|
* from the pool and their contents were re-mapped to other vdevs. Note
|
|
* that everything that we read before this step must have been
|
|
* rewritten on concrete vdevs after the last device removal was
|
|
* initiated. Otherwise we could be reading from indirect vdevs before
|
|
* we have loaded their mappings.
|
|
*/
|
|
error = spa_ld_open_indirect_vdev_metadata(spa);
|
|
if (error != 0)
|
|
return (error);
|
|
|
|
/*
|
|
* Retrieve the full list of active features from the MOS and check if
|
|
* they are all supported.
|
|
*/
|
|
error = spa_ld_check_features(spa, &missing_feat_write);
|
|
if (error != 0)
|
|
return (error);
|
|
|
|
/*
|
|
* Load several special directories from the MOS needed by the dsl_pool
|
|
* layer.
|
|
*/
|
|
error = spa_ld_load_special_directories(spa);
|
|
if (error != 0)
|
|
return (error);
|
|
|
|
/*
|
|
* Retrieve pool properties from the MOS.
|
|
*/
|
|
error = spa_ld_get_props(spa);
|
|
if (error != 0)
|
|
return (error);
|
|
|
|
/*
|
|
* Retrieve the list of auxiliary devices - cache devices and spares -
|
|
* and open them.
|
|
*/
|
|
error = spa_ld_open_aux_vdevs(spa, type);
|
|
if (error != 0)
|
|
return (error);
|
|
|
|
/*
|
|
* Load the metadata for all vdevs. Also check if unopenable devices
|
|
* should be autoreplaced.
|
|
*/
|
|
error = spa_ld_load_vdev_metadata(spa);
|
|
if (error != 0)
|
|
return (error);
|
|
|
|
error = spa_ld_load_dedup_tables(spa);
|
|
if (error != 0)
|
|
return (error);
|
|
|
|
/*
|
|
* Verify the logs now to make sure we don't have any unexpected errors
|
|
* when we claim log blocks later.
|
|
*/
|
|
error = spa_ld_verify_logs(spa, type, ereport);
|
|
if (error != 0)
|
|
return (error);
|
|
|
|
if (missing_feat_write) {
|
|
ASSERT(spa->spa_load_state == SPA_LOAD_TRYIMPORT);
|
|
|
|
/*
|
|
* At this point, we know that we can open the pool in
|
|
* read-only mode but not read-write mode. We now have enough
|
|
* information and can return to userland.
|
|
*/
|
|
return (spa_vdev_err(spa->spa_root_vdev, VDEV_AUX_UNSUP_FEAT,
|
|
ENOTSUP));
|
|
}
|
|
|
|
/*
|
|
* Traverse the last txgs to make sure the pool was left off in a safe
|
|
* state. When performing an extreme rewind, we verify the whole pool,
|
|
* which can take a very long time.
|
|
*/
|
|
error = spa_ld_verify_pool_data(spa);
|
|
if (error != 0)
|
|
return (error);
|
|
|
|
/*
|
|
* Calculate the deflated space for the pool. This must be done before
|
|
* we write anything to the pool because we'd need to update the space
|
|
* accounting using the deflated sizes.
|
|
*/
|
|
spa_update_dspace(spa);
|
|
|
|
/*
|
|
* We have now retrieved all the information we needed to open the
|
|
* pool. If we are importing the pool in read-write mode, a few
|
|
* additional steps must be performed to finish the import.
|
|
*/
|
|
if (spa_writeable(spa) && (spa->spa_load_state == SPA_LOAD_RECOVER ||
|
|
spa->spa_load_max_txg == UINT64_MAX)) {
|
|
uint64_t config_cache_txg = spa->spa_config_txg;
|
|
|
|
ASSERT(spa->spa_load_state != SPA_LOAD_TRYIMPORT);
|
|
|
|
/*
|
|
* In case of a checkpoint rewind, log the original txg
|
|
* of the checkpointed uberblock.
|
|
*/
|
|
if (checkpoint_rewind) {
|
|
spa_history_log_internal(spa, "checkpoint rewind",
|
|
NULL, "rewound state to txg=%llu",
|
|
(u_longlong_t)spa->spa_uberblock.ub_checkpoint_txg);
|
|
}
|
|
|
|
/*
|
|
* Traverse the ZIL and claim all blocks.
|
|
*/
|
|
spa_ld_claim_log_blocks(spa);
|
|
|
|
/*
|
|
* Kick-off the syncing thread.
|
|
*/
|
|
spa->spa_sync_on = B_TRUE;
|
|
txg_sync_start(spa->spa_dsl_pool);
|
|
mmp_thread_start(spa);
|
|
|
|
/*
|
|
* Wait for all claims to sync. We sync up to the highest
|
|
* claimed log block birth time so that claimed log blocks
|
|
* don't appear to be from the future. spa_claim_max_txg
|
|
* will have been set for us by ZIL traversal operations
|
|
* performed above.
|
|
*/
|
|
txg_wait_synced(spa->spa_dsl_pool, spa->spa_claim_max_txg);
|
|
|
|
/*
|
|
* Check if we need to request an update of the config. On the
|
|
* next sync, we would update the config stored in vdev labels
|
|
* and the cachefile (by default /etc/zfs/zpool.cache).
|
|
*/
|
|
spa_ld_check_for_config_update(spa, config_cache_txg,
|
|
update_config_cache);
|
|
|
|
/*
|
|
* Check if a rebuild was in progress and if so resume it.
|
|
* Then check all DTLs to see if anything needs resilvering.
|
|
* The resilver will be deferred if a rebuild was started.
|
|
*/
|
|
if (vdev_rebuild_active(spa->spa_root_vdev)) {
|
|
vdev_rebuild_restart(spa);
|
|
} else if (!dsl_scan_resilvering(spa->spa_dsl_pool) &&
|
|
vdev_resilver_needed(spa->spa_root_vdev, NULL, NULL)) {
|
|
spa_async_request(spa, SPA_ASYNC_RESILVER);
|
|
}
|
|
|
|
/*
|
|
* Log the fact that we booted up (so that we can detect if
|
|
* we rebooted in the middle of an operation).
|
|
*/
|
|
spa_history_log_version(spa, "open", NULL);
|
|
|
|
spa_restart_removal(spa);
|
|
spa_spawn_aux_threads(spa);
|
|
|
|
/*
|
|
* Delete any inconsistent datasets.
|
|
*
|
|
* Note:
|
|
* Since we may be issuing deletes for clones here,
|
|
* we make sure to do so after we've spawned all the
|
|
* auxiliary threads above (from which the livelist
|
|
* deletion zthr is part of).
|
|
*/
|
|
(void) dmu_objset_find(spa_name(spa),
|
|
dsl_destroy_inconsistent, NULL, DS_FIND_CHILDREN);
|
|
|
|
/*
|
|
* Clean up any stale temporary dataset userrefs.
|
|
*/
|
|
dsl_pool_clean_tmp_userrefs(spa->spa_dsl_pool);
|
|
|
|
spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
|
|
vdev_initialize_restart(spa->spa_root_vdev);
|
|
vdev_trim_restart(spa->spa_root_vdev);
|
|
vdev_autotrim_restart(spa);
|
|
spa_config_exit(spa, SCL_CONFIG, FTAG);
|
|
}
|
|
|
|
spa_import_progress_remove(spa_guid(spa));
|
|
spa_async_request(spa, SPA_ASYNC_L2CACHE_REBUILD);
|
|
|
|
spa_load_note(spa, "LOADED");
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
spa_load_retry(spa_t *spa, spa_load_state_t state)
|
|
{
|
|
spa_mode_t mode = spa->spa_mode;
|
|
|
|
spa_unload(spa);
|
|
spa_deactivate(spa);
|
|
|
|
spa->spa_load_max_txg = spa->spa_uberblock.ub_txg - 1;
|
|
|
|
spa_activate(spa, mode);
|
|
spa_async_suspend(spa);
|
|
|
|
spa_load_note(spa, "spa_load_retry: rewind, max txg: %llu",
|
|
(u_longlong_t)spa->spa_load_max_txg);
|
|
|
|
return (spa_load(spa, state, SPA_IMPORT_EXISTING));
|
|
}
|
|
|
|
/*
|
|
* If spa_load() fails this function will try loading prior txg's. If
|
|
* 'state' is SPA_LOAD_RECOVER and one of these loads succeeds the pool
|
|
* will be rewound to that txg. If 'state' is not SPA_LOAD_RECOVER this
|
|
* function will not rewind the pool and will return the same error as
|
|
* spa_load().
|
|
*/
|
|
static int
|
|
spa_load_best(spa_t *spa, spa_load_state_t state, uint64_t max_request,
|
|
int rewind_flags)
|
|
{
|
|
nvlist_t *loadinfo = NULL;
|
|
nvlist_t *config = NULL;
|
|
int load_error, rewind_error;
|
|
uint64_t safe_rewind_txg;
|
|
uint64_t min_txg;
|
|
|
|
if (spa->spa_load_txg && state == SPA_LOAD_RECOVER) {
|
|
spa->spa_load_max_txg = spa->spa_load_txg;
|
|
spa_set_log_state(spa, SPA_LOG_CLEAR);
|
|
} else {
|
|
spa->spa_load_max_txg = max_request;
|
|
if (max_request != UINT64_MAX)
|
|
spa->spa_extreme_rewind = B_TRUE;
|
|
}
|
|
|
|
load_error = rewind_error = spa_load(spa, state, SPA_IMPORT_EXISTING);
|
|
if (load_error == 0)
|
|
return (0);
|
|
if (load_error == ZFS_ERR_NO_CHECKPOINT) {
|
|
/*
|
|
* When attempting checkpoint-rewind on a pool with no
|
|
* checkpoint, we should not attempt to load uberblocks
|
|
* from previous txgs when spa_load fails.
|
|
*/
|
|
ASSERT(spa->spa_import_flags & ZFS_IMPORT_CHECKPOINT);
|
|
spa_import_progress_remove(spa_guid(spa));
|
|
return (load_error);
|
|
}
|
|
|
|
if (spa->spa_root_vdev != NULL)
|
|
config = spa_config_generate(spa, NULL, -1ULL, B_TRUE);
|
|
|
|
spa->spa_last_ubsync_txg = spa->spa_uberblock.ub_txg;
|
|
spa->spa_last_ubsync_txg_ts = spa->spa_uberblock.ub_timestamp;
|
|
|
|
if (rewind_flags & ZPOOL_NEVER_REWIND) {
|
|
nvlist_free(config);
|
|
spa_import_progress_remove(spa_guid(spa));
|
|
return (load_error);
|
|
}
|
|
|
|
if (state == SPA_LOAD_RECOVER) {
|
|
/* Price of rolling back is discarding txgs, including log */
|
|
spa_set_log_state(spa, SPA_LOG_CLEAR);
|
|
} else {
|
|
/*
|
|
* If we aren't rolling back save the load info from our first
|
|
* import attempt so that we can restore it after attempting
|
|
* to rewind.
|
|
*/
|
|
loadinfo = spa->spa_load_info;
|
|
spa->spa_load_info = fnvlist_alloc();
|
|
}
|
|
|
|
spa->spa_load_max_txg = spa->spa_last_ubsync_txg;
|
|
safe_rewind_txg = spa->spa_last_ubsync_txg - TXG_DEFER_SIZE;
|
|
min_txg = (rewind_flags & ZPOOL_EXTREME_REWIND) ?
|
|
TXG_INITIAL : safe_rewind_txg;
|
|
|
|
/*
|
|
* Continue as long as we're finding errors, we're still within
|
|
* the acceptable rewind range, and we're still finding uberblocks
|
|
*/
|
|
while (rewind_error && spa->spa_uberblock.ub_txg >= min_txg &&
|
|
spa->spa_uberblock.ub_txg <= spa->spa_load_max_txg) {
|
|
if (spa->spa_load_max_txg < safe_rewind_txg)
|
|
spa->spa_extreme_rewind = B_TRUE;
|
|
rewind_error = spa_load_retry(spa, state);
|
|
}
|
|
|
|
spa->spa_extreme_rewind = B_FALSE;
|
|
spa->spa_load_max_txg = UINT64_MAX;
|
|
|
|
if (config && (rewind_error || state != SPA_LOAD_RECOVER))
|
|
spa_config_set(spa, config);
|
|
else
|
|
nvlist_free(config);
|
|
|
|
if (state == SPA_LOAD_RECOVER) {
|
|
ASSERT3P(loadinfo, ==, NULL);
|
|
spa_import_progress_remove(spa_guid(spa));
|
|
return (rewind_error);
|
|
} else {
|
|
/* Store the rewind info as part of the initial load info */
|
|
fnvlist_add_nvlist(loadinfo, ZPOOL_CONFIG_REWIND_INFO,
|
|
spa->spa_load_info);
|
|
|
|
/* Restore the initial load info */
|
|
fnvlist_free(spa->spa_load_info);
|
|
spa->spa_load_info = loadinfo;
|
|
|
|
spa_import_progress_remove(spa_guid(spa));
|
|
return (load_error);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Pool Open/Import
|
|
*
|
|
* The import case is identical to an open except that the configuration is sent
|
|
* down from userland, instead of grabbed from the configuration cache. For the
|
|
* case of an open, the pool configuration will exist in the
|
|
* POOL_STATE_UNINITIALIZED state.
|
|
*
|
|
* The stats information (gen/count/ustats) is used to gather vdev statistics at
|
|
* the same time open the pool, without having to keep around the spa_t in some
|
|
* ambiguous state.
|
|
*/
|
|
static int
|
|
spa_open_common(const char *pool, spa_t **spapp, void *tag, nvlist_t *nvpolicy,
|
|
nvlist_t **config)
|
|
{
|
|
spa_t *spa;
|
|
spa_load_state_t state = SPA_LOAD_OPEN;
|
|
int error;
|
|
int locked = B_FALSE;
|
|
int firstopen = B_FALSE;
|
|
|
|
*spapp = NULL;
|
|
|
|
/*
|
|
* As disgusting as this is, we need to support recursive calls to this
|
|
* function because dsl_dir_open() is called during spa_load(), and ends
|
|
* up calling spa_open() again. The real fix is to figure out how to
|
|
* avoid dsl_dir_open() calling this in the first place.
|
|
*/
|
|
if (MUTEX_NOT_HELD(&spa_namespace_lock)) {
|
|
mutex_enter(&spa_namespace_lock);
|
|
locked = B_TRUE;
|
|
}
|
|
|
|
if ((spa = spa_lookup(pool)) == NULL) {
|
|
if (locked)
|
|
mutex_exit(&spa_namespace_lock);
|
|
return (SET_ERROR(ENOENT));
|
|
}
|
|
|
|
if (spa->spa_state == POOL_STATE_UNINITIALIZED) {
|
|
zpool_load_policy_t policy;
|
|
|
|
firstopen = B_TRUE;
|
|
|
|
zpool_get_load_policy(nvpolicy ? nvpolicy : spa->spa_config,
|
|
&policy);
|
|
if (policy.zlp_rewind & ZPOOL_DO_REWIND)
|
|
state = SPA_LOAD_RECOVER;
|
|
|
|
spa_activate(spa, spa_mode_global);
|
|
|
|
if (state != SPA_LOAD_RECOVER)
|
|
spa->spa_last_ubsync_txg = spa->spa_load_txg = 0;
|
|
spa->spa_config_source = SPA_CONFIG_SRC_CACHEFILE;
|
|
|
|
zfs_dbgmsg("spa_open_common: opening %s", pool);
|
|
error = spa_load_best(spa, state, policy.zlp_txg,
|
|
policy.zlp_rewind);
|
|
|
|
if (error == EBADF) {
|
|
/*
|
|
* If vdev_validate() returns failure (indicated by
|
|
* EBADF), it indicates that one of the vdevs indicates
|
|
* that the pool has been exported or destroyed. If
|
|
* this is the case, the config cache is out of sync and
|
|
* we should remove the pool from the namespace.
|
|
*/
|
|
spa_unload(spa);
|
|
spa_deactivate(spa);
|
|
spa_write_cachefile(spa, B_TRUE, B_TRUE);
|
|
spa_remove(spa);
|
|
if (locked)
|
|
mutex_exit(&spa_namespace_lock);
|
|
return (SET_ERROR(ENOENT));
|
|
}
|
|
|
|
if (error) {
|
|
/*
|
|
* We can't open the pool, but we still have useful
|
|
* information: the state of each vdev after the
|
|
* attempted vdev_open(). Return this to the user.
|
|
*/
|
|
if (config != NULL && spa->spa_config) {
|
|
VERIFY(nvlist_dup(spa->spa_config, config,
|
|
KM_SLEEP) == 0);
|
|
VERIFY(nvlist_add_nvlist(*config,
|
|
ZPOOL_CONFIG_LOAD_INFO,
|
|
spa->spa_load_info) == 0);
|
|
}
|
|
spa_unload(spa);
|
|
spa_deactivate(spa);
|
|
spa->spa_last_open_failed = error;
|
|
if (locked)
|
|
mutex_exit(&spa_namespace_lock);
|
|
*spapp = NULL;
|
|
return (error);
|
|
}
|
|
}
|
|
|
|
spa_open_ref(spa, tag);
|
|
|
|
if (config != NULL)
|
|
*config = spa_config_generate(spa, NULL, -1ULL, B_TRUE);
|
|
|
|
/*
|
|
* If we've recovered the pool, pass back any information we
|
|
* gathered while doing the load.
|
|
*/
|
|
if (state == SPA_LOAD_RECOVER) {
|
|
VERIFY(nvlist_add_nvlist(*config, ZPOOL_CONFIG_LOAD_INFO,
|
|
spa->spa_load_info) == 0);
|
|
}
|
|
|
|
if (locked) {
|
|
spa->spa_last_open_failed = 0;
|
|
spa->spa_last_ubsync_txg = 0;
|
|
spa->spa_load_txg = 0;
|
|
mutex_exit(&spa_namespace_lock);
|
|
}
|
|
|
|
if (firstopen)
|
|
zvol_create_minors_recursive(spa_name(spa));
|
|
|
|
*spapp = spa;
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
spa_open_rewind(const char *name, spa_t **spapp, void *tag, nvlist_t *policy,
|
|
nvlist_t **config)
|
|
{
|
|
return (spa_open_common(name, spapp, tag, policy, config));
|
|
}
|
|
|
|
int
|
|
spa_open(const char *name, spa_t **spapp, void *tag)
|
|
{
|
|
return (spa_open_common(name, spapp, tag, NULL, NULL));
|
|
}
|
|
|
|
/*
|
|
* Lookup the given spa_t, incrementing the inject count in the process,
|
|
* preventing it from being exported or destroyed.
|
|
*/
|
|
spa_t *
|
|
spa_inject_addref(char *name)
|
|
{
|
|
spa_t *spa;
|
|
|
|
mutex_enter(&spa_namespace_lock);
|
|
if ((spa = spa_lookup(name)) == NULL) {
|
|
mutex_exit(&spa_namespace_lock);
|
|
return (NULL);
|
|
}
|
|
spa->spa_inject_ref++;
|
|
mutex_exit(&spa_namespace_lock);
|
|
|
|
return (spa);
|
|
}
|
|
|
|
void
|
|
spa_inject_delref(spa_t *spa)
|
|
{
|
|
mutex_enter(&spa_namespace_lock);
|
|
spa->spa_inject_ref--;
|
|
mutex_exit(&spa_namespace_lock);
|
|
}
|
|
|
|
/*
|
|
* Add spares device information to the nvlist.
|
|
*/
|
|
static void
|
|
spa_add_spares(spa_t *spa, nvlist_t *config)
|
|
{
|
|
nvlist_t **spares;
|
|
uint_t i, nspares;
|
|
nvlist_t *nvroot;
|
|
uint64_t guid;
|
|
vdev_stat_t *vs;
|
|
uint_t vsc;
|
|
uint64_t pool;
|
|
|
|
ASSERT(spa_config_held(spa, SCL_CONFIG, RW_READER));
|
|
|
|
if (spa->spa_spares.sav_count == 0)
|
|
return;
|
|
|
|
VERIFY(nvlist_lookup_nvlist(config,
|
|
ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0);
|
|
VERIFY(nvlist_lookup_nvlist_array(spa->spa_spares.sav_config,
|
|
ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0);
|
|
if (nspares != 0) {
|
|
VERIFY(nvlist_add_nvlist_array(nvroot,
|
|
ZPOOL_CONFIG_SPARES, spares, nspares) == 0);
|
|
VERIFY(nvlist_lookup_nvlist_array(nvroot,
|
|
ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0);
|
|
|
|
/*
|
|
* Go through and find any spares which have since been
|
|
* repurposed as an active spare. If this is the case, update
|
|
* their status appropriately.
|
|
*/
|
|
for (i = 0; i < nspares; i++) {
|
|
VERIFY(nvlist_lookup_uint64(spares[i],
|
|
ZPOOL_CONFIG_GUID, &guid) == 0);
|
|
if (spa_spare_exists(guid, &pool, NULL) &&
|
|
pool != 0ULL) {
|
|
VERIFY(nvlist_lookup_uint64_array(
|
|
spares[i], ZPOOL_CONFIG_VDEV_STATS,
|
|
(uint64_t **)&vs, &vsc) == 0);
|
|
vs->vs_state = VDEV_STATE_CANT_OPEN;
|
|
vs->vs_aux = VDEV_AUX_SPARED;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Add l2cache device information to the nvlist, including vdev stats.
|
|
*/
|
|
static void
|
|
spa_add_l2cache(spa_t *spa, nvlist_t *config)
|
|
{
|
|
nvlist_t **l2cache;
|
|
uint_t i, j, nl2cache;
|
|
nvlist_t *nvroot;
|
|
uint64_t guid;
|
|
vdev_t *vd;
|
|
vdev_stat_t *vs;
|
|
uint_t vsc;
|
|
|
|
ASSERT(spa_config_held(spa, SCL_CONFIG, RW_READER));
|
|
|
|
if (spa->spa_l2cache.sav_count == 0)
|
|
return;
|
|
|
|
VERIFY(nvlist_lookup_nvlist(config,
|
|
ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0);
|
|
VERIFY(nvlist_lookup_nvlist_array(spa->spa_l2cache.sav_config,
|
|
ZPOOL_CONFIG_L2CACHE, &l2cache, &nl2cache) == 0);
|
|
if (nl2cache != 0) {
|
|
VERIFY(nvlist_add_nvlist_array(nvroot,
|
|
ZPOOL_CONFIG_L2CACHE, l2cache, nl2cache) == 0);
|
|
VERIFY(nvlist_lookup_nvlist_array(nvroot,
|
|
ZPOOL_CONFIG_L2CACHE, &l2cache, &nl2cache) == 0);
|
|
|
|
/*
|
|
* Update level 2 cache device stats.
|
|
*/
|
|
|
|
for (i = 0; i < nl2cache; i++) {
|
|
VERIFY(nvlist_lookup_uint64(l2cache[i],
|
|
ZPOOL_CONFIG_GUID, &guid) == 0);
|
|
|
|
vd = NULL;
|
|
for (j = 0; j < spa->spa_l2cache.sav_count; j++) {
|
|
if (guid ==
|
|
spa->spa_l2cache.sav_vdevs[j]->vdev_guid) {
|
|
vd = spa->spa_l2cache.sav_vdevs[j];
|
|
break;
|
|
}
|
|
}
|
|
ASSERT(vd != NULL);
|
|
|
|
VERIFY(nvlist_lookup_uint64_array(l2cache[i],
|
|
ZPOOL_CONFIG_VDEV_STATS, (uint64_t **)&vs, &vsc)
|
|
== 0);
|
|
vdev_get_stats(vd, vs);
|
|
vdev_config_generate_stats(vd, l2cache[i]);
|
|
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
spa_feature_stats_from_disk(spa_t *spa, nvlist_t *features)
|
|
{
|
|
zap_cursor_t zc;
|
|
zap_attribute_t za;
|
|
|
|
if (spa->spa_feat_for_read_obj != 0) {
|
|
for (zap_cursor_init(&zc, spa->spa_meta_objset,
|
|
spa->spa_feat_for_read_obj);
|
|
zap_cursor_retrieve(&zc, &za) == 0;
|
|
zap_cursor_advance(&zc)) {
|
|
ASSERT(za.za_integer_length == sizeof (uint64_t) &&
|
|
za.za_num_integers == 1);
|
|
VERIFY0(nvlist_add_uint64(features, za.za_name,
|
|
za.za_first_integer));
|
|
}
|
|
zap_cursor_fini(&zc);
|
|
}
|
|
|
|
if (spa->spa_feat_for_write_obj != 0) {
|
|
for (zap_cursor_init(&zc, spa->spa_meta_objset,
|
|
spa->spa_feat_for_write_obj);
|
|
zap_cursor_retrieve(&zc, &za) == 0;
|
|
zap_cursor_advance(&zc)) {
|
|
ASSERT(za.za_integer_length == sizeof (uint64_t) &&
|
|
za.za_num_integers == 1);
|
|
VERIFY0(nvlist_add_uint64(features, za.za_name,
|
|
za.za_first_integer));
|
|
}
|
|
zap_cursor_fini(&zc);
|
|
}
|
|
}
|
|
|
|
static void
|
|
spa_feature_stats_from_cache(spa_t *spa, nvlist_t *features)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < SPA_FEATURES; i++) {
|
|
zfeature_info_t feature = spa_feature_table[i];
|
|
uint64_t refcount;
|
|
|
|
if (feature_get_refcount(spa, &feature, &refcount) != 0)
|
|
continue;
|
|
|
|
VERIFY0(nvlist_add_uint64(features, feature.fi_guid, refcount));
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Store a list of pool features and their reference counts in the
|
|
* config.
|
|
*
|
|
* The first time this is called on a spa, allocate a new nvlist, fetch
|
|
* the pool features and reference counts from disk, then save the list
|
|
* in the spa. In subsequent calls on the same spa use the saved nvlist
|
|
* and refresh its values from the cached reference counts. This
|
|
* ensures we don't block here on I/O on a suspended pool so 'zpool
|
|
* clear' can resume the pool.
|
|
*/
|
|
static void
|
|
spa_add_feature_stats(spa_t *spa, nvlist_t *config)
|
|
{
|
|
nvlist_t *features;
|
|
|
|
ASSERT(spa_config_held(spa, SCL_CONFIG, RW_READER));
|
|
|
|
mutex_enter(&spa->spa_feat_stats_lock);
|
|
features = spa->spa_feat_stats;
|
|
|
|
if (features != NULL) {
|
|
spa_feature_stats_from_cache(spa, features);
|
|
} else {
|
|
VERIFY0(nvlist_alloc(&features, NV_UNIQUE_NAME, KM_SLEEP));
|
|
spa->spa_feat_stats = features;
|
|
spa_feature_stats_from_disk(spa, features);
|
|
}
|
|
|
|
VERIFY0(nvlist_add_nvlist(config, ZPOOL_CONFIG_FEATURE_STATS,
|
|
features));
|
|
|
|
mutex_exit(&spa->spa_feat_stats_lock);
|
|
}
|
|
|
|
int
|
|
spa_get_stats(const char *name, nvlist_t **config,
|
|
char *altroot, size_t buflen)
|
|
{
|
|
int error;
|
|
spa_t *spa;
|
|
|
|
*config = NULL;
|
|
error = spa_open_common(name, &spa, FTAG, NULL, config);
|
|
|
|
if (spa != NULL) {
|
|
/*
|
|
* This still leaves a window of inconsistency where the spares
|
|
* or l2cache devices could change and the config would be
|
|
* self-inconsistent.
|
|
*/
|
|
spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
|
|
|
|
if (*config != NULL) {
|
|
uint64_t loadtimes[2];
|
|
|
|
loadtimes[0] = spa->spa_loaded_ts.tv_sec;
|
|
loadtimes[1] = spa->spa_loaded_ts.tv_nsec;
|
|
VERIFY(nvlist_add_uint64_array(*config,
|
|
ZPOOL_CONFIG_LOADED_TIME, loadtimes, 2) == 0);
|
|
|
|
VERIFY(nvlist_add_uint64(*config,
|
|
ZPOOL_CONFIG_ERRCOUNT,
|
|
spa_get_errlog_size(spa)) == 0);
|
|
|
|
if (spa_suspended(spa)) {
|
|
VERIFY(nvlist_add_uint64(*config,
|
|
ZPOOL_CONFIG_SUSPENDED,
|
|
spa->spa_failmode) == 0);
|
|
VERIFY(nvlist_add_uint64(*config,
|
|
ZPOOL_CONFIG_SUSPENDED_REASON,
|
|
spa->spa_suspended) == 0);
|
|
}
|
|
|
|
spa_add_spares(spa, *config);
|
|
spa_add_l2cache(spa, *config);
|
|
spa_add_feature_stats(spa, *config);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* We want to get the alternate root even for faulted pools, so we cheat
|
|
* and call spa_lookup() directly.
|
|
*/
|
|
if (altroot) {
|
|
if (spa == NULL) {
|
|
mutex_enter(&spa_namespace_lock);
|
|
spa = spa_lookup(name);
|
|
if (spa)
|
|
spa_altroot(spa, altroot, buflen);
|
|
else
|
|
altroot[0] = '\0';
|
|
spa = NULL;
|
|
mutex_exit(&spa_namespace_lock);
|
|
} else {
|
|
spa_altroot(spa, altroot, buflen);
|
|
}
|
|
}
|
|
|
|
if (spa != NULL) {
|
|
spa_config_exit(spa, SCL_CONFIG, FTAG);
|
|
spa_close(spa, FTAG);
|
|
}
|
|
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Validate that the auxiliary device array is well formed. We must have an
|
|
* array of nvlists, each which describes a valid leaf vdev. If this is an
|
|
* import (mode is VDEV_ALLOC_SPARE), then we allow corrupted spares to be
|
|
* specified, as long as they are well-formed.
|
|
*/
|
|
static int
|
|
spa_validate_aux_devs(spa_t *spa, nvlist_t *nvroot, uint64_t crtxg, int mode,
|
|
spa_aux_vdev_t *sav, const char *config, uint64_t version,
|
|
vdev_labeltype_t label)
|
|
{
|
|
nvlist_t **dev;
|
|
uint_t i, ndev;
|
|
vdev_t *vd;
|
|
int error;
|
|
|
|
ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL);
|
|
|
|
/*
|
|
* It's acceptable to have no devs specified.
|
|
*/
|
|
if (nvlist_lookup_nvlist_array(nvroot, config, &dev, &ndev) != 0)
|
|
return (0);
|
|
|
|
if (ndev == 0)
|
|
return (SET_ERROR(EINVAL));
|
|
|
|
/*
|
|
* Make sure the pool is formatted with a version that supports this
|
|
* device type.
|
|
*/
|
|
if (spa_version(spa) < version)
|
|
return (SET_ERROR(ENOTSUP));
|
|
|
|
/*
|
|
* Set the pending device list so we correctly handle device in-use
|
|
* checking.
|
|
*/
|
|
sav->sav_pending = dev;
|
|
sav->sav_npending = ndev;
|
|
|
|
for (i = 0; i < ndev; i++) {
|
|
if ((error = spa_config_parse(spa, &vd, dev[i], NULL, 0,
|
|
mode)) != 0)
|
|
goto out;
|
|
|
|
if (!vd->vdev_ops->vdev_op_leaf) {
|
|
vdev_free(vd);
|
|
error = SET_ERROR(EINVAL);
|
|
goto out;
|
|
}
|
|
|
|
vd->vdev_top = vd;
|
|
|
|
if ((error = vdev_open(vd)) == 0 &&
|
|
(error = vdev_label_init(vd, crtxg, label)) == 0) {
|
|
VERIFY(nvlist_add_uint64(dev[i], ZPOOL_CONFIG_GUID,
|
|
vd->vdev_guid) == 0);
|
|
}
|
|
|
|
vdev_free(vd);
|
|
|
|
if (error &&
|
|
(mode != VDEV_ALLOC_SPARE && mode != VDEV_ALLOC_L2CACHE))
|
|
goto out;
|
|
else
|
|
error = 0;
|
|
}
|
|
|
|
out:
|
|
sav->sav_pending = NULL;
|
|
sav->sav_npending = 0;
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
spa_validate_aux(spa_t *spa, nvlist_t *nvroot, uint64_t crtxg, int mode)
|
|
{
|
|
int error;
|
|
|
|
ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL);
|
|
|
|
if ((error = spa_validate_aux_devs(spa, nvroot, crtxg, mode,
|
|
&spa->spa_spares, ZPOOL_CONFIG_SPARES, SPA_VERSION_SPARES,
|
|
VDEV_LABEL_SPARE)) != 0) {
|
|
return (error);
|
|
}
|
|
|
|
return (spa_validate_aux_devs(spa, nvroot, crtxg, mode,
|
|
&spa->spa_l2cache, ZPOOL_CONFIG_L2CACHE, SPA_VERSION_L2CACHE,
|
|
VDEV_LABEL_L2CACHE));
|
|
}
|
|
|
|
static void
|
|
spa_set_aux_vdevs(spa_aux_vdev_t *sav, nvlist_t **devs, int ndevs,
|
|
const char *config)
|
|
{
|
|
int i;
|
|
|
|
if (sav->sav_config != NULL) {
|
|
nvlist_t **olddevs;
|
|
uint_t oldndevs;
|
|
nvlist_t **newdevs;
|
|
|
|
/*
|
|
* Generate new dev list by concatenating with the
|
|
* current dev list.
|
|
*/
|
|
VERIFY(nvlist_lookup_nvlist_array(sav->sav_config, config,
|
|
&olddevs, &oldndevs) == 0);
|
|
|
|
newdevs = kmem_alloc(sizeof (void *) *
|
|
(ndevs + oldndevs), KM_SLEEP);
|
|
for (i = 0; i < oldndevs; i++)
|
|
VERIFY(nvlist_dup(olddevs[i], &newdevs[i],
|
|
KM_SLEEP) == 0);
|
|
for (i = 0; i < ndevs; i++)
|
|
VERIFY(nvlist_dup(devs[i], &newdevs[i + oldndevs],
|
|
KM_SLEEP) == 0);
|
|
|
|
VERIFY(nvlist_remove(sav->sav_config, config,
|
|
DATA_TYPE_NVLIST_ARRAY) == 0);
|
|
|
|
VERIFY(nvlist_add_nvlist_array(sav->sav_config,
|
|
config, newdevs, ndevs + oldndevs) == 0);
|
|
for (i = 0; i < oldndevs + ndevs; i++)
|
|
nvlist_free(newdevs[i]);
|
|
kmem_free(newdevs, (oldndevs + ndevs) * sizeof (void *));
|
|
} else {
|
|
/*
|
|
* Generate a new dev list.
|
|
*/
|
|
VERIFY(nvlist_alloc(&sav->sav_config, NV_UNIQUE_NAME,
|
|
KM_SLEEP) == 0);
|
|
VERIFY(nvlist_add_nvlist_array(sav->sav_config, config,
|
|
devs, ndevs) == 0);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Stop and drop level 2 ARC devices
|
|
*/
|
|
void
|
|
spa_l2cache_drop(spa_t *spa)
|
|
{
|
|
vdev_t *vd;
|
|
int i;
|
|
spa_aux_vdev_t *sav = &spa->spa_l2cache;
|
|
|
|
for (i = 0; i < sav->sav_count; i++) {
|
|
uint64_t pool;
|
|
|
|
vd = sav->sav_vdevs[i];
|
|
ASSERT(vd != NULL);
|
|
|
|
if (spa_l2cache_exists(vd->vdev_guid, &pool) &&
|
|
pool != 0ULL && l2arc_vdev_present(vd))
|
|
l2arc_remove_vdev(vd);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Verify encryption parameters for spa creation. If we are encrypting, we must
|
|
* have the encryption feature flag enabled.
|
|
*/
|
|
static int
|
|
spa_create_check_encryption_params(dsl_crypto_params_t *dcp,
|
|
boolean_t has_encryption)
|
|
{
|
|
if (dcp->cp_crypt != ZIO_CRYPT_OFF &&
|
|
dcp->cp_crypt != ZIO_CRYPT_INHERIT &&
|
|
!has_encryption)
|
|
return (SET_ERROR(ENOTSUP));
|
|
|
|
return (dmu_objset_create_crypt_check(NULL, dcp, NULL));
|
|
}
|
|
|
|
/*
|
|
* Pool Creation
|
|
*/
|
|
int
|
|
spa_create(const char *pool, nvlist_t *nvroot, nvlist_t *props,
|
|
nvlist_t *zplprops, dsl_crypto_params_t *dcp)
|
|
{
|
|
spa_t *spa;
|
|
char *altroot = NULL;
|
|
vdev_t *rvd;
|
|
dsl_pool_t *dp;
|
|
dmu_tx_t *tx;
|
|
int error = 0;
|
|
uint64_t txg = TXG_INITIAL;
|
|
nvlist_t **spares, **l2cache;
|
|
uint_t nspares, nl2cache;
|
|
uint64_t version, obj, ndraid = 0;
|
|
boolean_t has_features;
|
|
boolean_t has_encryption;
|
|
boolean_t has_allocclass;
|
|
spa_feature_t feat;
|
|
char *feat_name;
|
|
char *poolname;
|
|
nvlist_t *nvl;
|
|
|
|
if (props == NULL ||
|
|
nvlist_lookup_string(props, "tname", &poolname) != 0)
|
|
poolname = (char *)pool;
|
|
|
|
/*
|
|
* If this pool already exists, return failure.
|
|
*/
|
|
mutex_enter(&spa_namespace_lock);
|
|
if (spa_lookup(poolname) != NULL) {
|
|
mutex_exit(&spa_namespace_lock);
|
|
return (SET_ERROR(EEXIST));
|
|
}
|
|
|
|
/*
|
|
* Allocate a new spa_t structure.
|
|
*/
|
|
nvl = fnvlist_alloc();
|
|
fnvlist_add_string(nvl, ZPOOL_CONFIG_POOL_NAME, pool);
|
|
(void) nvlist_lookup_string(props,
|
|
zpool_prop_to_name(ZPOOL_PROP_ALTROOT), &altroot);
|
|
spa = spa_add(poolname, nvl, altroot);
|
|
fnvlist_free(nvl);
|
|
spa_activate(spa, spa_mode_global);
|
|
|
|
if (props && (error = spa_prop_validate(spa, props))) {
|
|
spa_deactivate(spa);
|
|
spa_remove(spa);
|
|
mutex_exit(&spa_namespace_lock);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Temporary pool names should never be written to disk.
|
|
*/
|
|
if (poolname != pool)
|
|
spa->spa_import_flags |= ZFS_IMPORT_TEMP_NAME;
|
|
|
|
has_features = B_FALSE;
|
|
has_encryption = B_FALSE;
|
|
has_allocclass = B_FALSE;
|
|
for (nvpair_t *elem = nvlist_next_nvpair(props, NULL);
|
|
elem != NULL; elem = nvlist_next_nvpair(props, elem)) {
|
|
if (zpool_prop_feature(nvpair_name(elem))) {
|
|
has_features = B_TRUE;
|
|
|
|
feat_name = strchr(nvpair_name(elem), '@') + 1;
|
|
VERIFY0(zfeature_lookup_name(feat_name, &feat));
|
|
if (feat == SPA_FEATURE_ENCRYPTION)
|
|
has_encryption = B_TRUE;
|
|
if (feat == SPA_FEATURE_ALLOCATION_CLASSES)
|
|
has_allocclass = B_TRUE;
|
|
}
|
|
}
|
|
|
|
/* verify encryption params, if they were provided */
|
|
if (dcp != NULL) {
|
|
error = spa_create_check_encryption_params(dcp, has_encryption);
|
|
if (error != 0) {
|
|
spa_deactivate(spa);
|
|
spa_remove(spa);
|
|
mutex_exit(&spa_namespace_lock);
|
|
return (error);
|
|
}
|
|
}
|
|
if (!has_allocclass && zfs_special_devs(nvroot, NULL)) {
|
|
spa_deactivate(spa);
|
|
spa_remove(spa);
|
|
mutex_exit(&spa_namespace_lock);
|
|
return (ENOTSUP);
|
|
}
|
|
|
|
if (has_features || nvlist_lookup_uint64(props,
|
|
zpool_prop_to_name(ZPOOL_PROP_VERSION), &version) != 0) {
|
|
version = SPA_VERSION;
|
|
}
|
|
ASSERT(SPA_VERSION_IS_SUPPORTED(version));
|
|
|
|
spa->spa_first_txg = txg;
|
|
spa->spa_uberblock.ub_txg = txg - 1;
|
|
spa->spa_uberblock.ub_version = version;
|
|
spa->spa_ubsync = spa->spa_uberblock;
|
|
spa->spa_load_state = SPA_LOAD_CREATE;
|
|
spa->spa_removing_phys.sr_state = DSS_NONE;
|
|
spa->spa_removing_phys.sr_removing_vdev = -1;
|
|
spa->spa_removing_phys.sr_prev_indirect_vdev = -1;
|
|
spa->spa_indirect_vdevs_loaded = B_TRUE;
|
|
|
|
/*
|
|
* Create "The Godfather" zio to hold all async IOs
|
|
*/
|
|
spa->spa_async_zio_root = kmem_alloc(max_ncpus * sizeof (void *),
|
|
KM_SLEEP);
|
|
for (int i = 0; i < max_ncpus; i++) {
|
|
spa->spa_async_zio_root[i] = zio_root(spa, NULL, NULL,
|
|
ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE |
|
|
ZIO_FLAG_GODFATHER);
|
|
}
|
|
|
|
/*
|
|
* Create the root vdev.
|
|
*/
|
|
spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER);
|
|
|
|
error = spa_config_parse(spa, &rvd, nvroot, NULL, 0, VDEV_ALLOC_ADD);
|
|
|
|
ASSERT(error != 0 || rvd != NULL);
|
|
ASSERT(error != 0 || spa->spa_root_vdev == rvd);
|
|
|
|
if (error == 0 && !zfs_allocatable_devs(nvroot))
|
|
error = SET_ERROR(EINVAL);
|
|
|
|
if (error == 0 &&
|
|
(error = vdev_create(rvd, txg, B_FALSE)) == 0 &&
|
|
(error = vdev_draid_spare_create(nvroot, rvd, &ndraid, 0)) == 0 &&
|
|
(error = spa_validate_aux(spa, nvroot, txg, VDEV_ALLOC_ADD)) == 0) {
|
|
/*
|
|
* instantiate the metaslab groups (this will dirty the vdevs)
|
|
* we can no longer error exit past this point
|
|
*/
|
|
for (int c = 0; error == 0 && c < rvd->vdev_children; c++) {
|
|
vdev_t *vd = rvd->vdev_child[c];
|
|
|
|
vdev_metaslab_set_size(vd);
|
|
vdev_expand(vd, txg);
|
|
}
|
|
}
|
|
|
|
spa_config_exit(spa, SCL_ALL, FTAG);
|
|
|
|
if (error != 0) {
|
|
spa_unload(spa);
|
|
spa_deactivate(spa);
|
|
spa_remove(spa);
|
|
mutex_exit(&spa_namespace_lock);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Get the list of spares, if specified.
|
|
*/
|
|
if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES,
|
|
&spares, &nspares) == 0) {
|
|
VERIFY(nvlist_alloc(&spa->spa_spares.sav_config, NV_UNIQUE_NAME,
|
|
KM_SLEEP) == 0);
|
|
VERIFY(nvlist_add_nvlist_array(spa->spa_spares.sav_config,
|
|
ZPOOL_CONFIG_SPARES, spares, nspares) == 0);
|
|
spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER);
|
|
spa_load_spares(spa);
|
|
spa_config_exit(spa, SCL_ALL, FTAG);
|
|
spa->spa_spares.sav_sync = B_TRUE;
|
|
}
|
|
|
|
/*
|
|
* Get the list of level 2 cache devices, if specified.
|
|
*/
|
|
if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_L2CACHE,
|
|
&l2cache, &nl2cache) == 0) {
|
|
VERIFY(nvlist_alloc(&spa->spa_l2cache.sav_config,
|
|
NV_UNIQUE_NAME, KM_SLEEP) == 0);
|
|
VERIFY(nvlist_add_nvlist_array(spa->spa_l2cache.sav_config,
|
|
ZPOOL_CONFIG_L2CACHE, l2cache, nl2cache) == 0);
|
|
spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER);
|
|
spa_load_l2cache(spa);
|
|
spa_config_exit(spa, SCL_ALL, FTAG);
|
|
spa->spa_l2cache.sav_sync = B_TRUE;
|
|
}
|
|
|
|
spa->spa_is_initializing = B_TRUE;
|
|
spa->spa_dsl_pool = dp = dsl_pool_create(spa, zplprops, dcp, txg);
|
|
spa->spa_is_initializing = B_FALSE;
|
|
|
|
/*
|
|
* Create DDTs (dedup tables).
|
|
*/
|
|
ddt_create(spa);
|
|
|
|
spa_update_dspace(spa);
|
|
|
|
tx = dmu_tx_create_assigned(dp, txg);
|
|
|
|
/*
|
|
* Create the pool's history object.
|
|
*/
|
|
if (version >= SPA_VERSION_ZPOOL_HISTORY && !spa->spa_history)
|
|
spa_history_create_obj(spa, tx);
|
|
|
|
spa_event_notify(spa, NULL, NULL, ESC_ZFS_POOL_CREATE);
|
|
spa_history_log_version(spa, "create", tx);
|
|
|
|
/*
|
|
* Create the pool config object.
|
|
*/
|
|
spa->spa_config_object = dmu_object_alloc(spa->spa_meta_objset,
|
|
DMU_OT_PACKED_NVLIST, SPA_CONFIG_BLOCKSIZE,
|
|
DMU_OT_PACKED_NVLIST_SIZE, sizeof (uint64_t), tx);
|
|
|
|
if (zap_add(spa->spa_meta_objset,
|
|
DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_CONFIG,
|
|
sizeof (uint64_t), 1, &spa->spa_config_object, tx) != 0) {
|
|
cmn_err(CE_PANIC, "failed to add pool config");
|
|
}
|
|
|
|
if (zap_add(spa->spa_meta_objset,
|
|
DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_CREATION_VERSION,
|
|
sizeof (uint64_t), 1, &version, tx) != 0) {
|
|
cmn_err(CE_PANIC, "failed to add pool version");
|
|
}
|
|
|
|
/* Newly created pools with the right version are always deflated. */
|
|
if (version >= SPA_VERSION_RAIDZ_DEFLATE) {
|
|
spa->spa_deflate = TRUE;
|
|
if (zap_add(spa->spa_meta_objset,
|
|
DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_DEFLATE,
|
|
sizeof (uint64_t), 1, &spa->spa_deflate, tx) != 0) {
|
|
cmn_err(CE_PANIC, "failed to add deflate");
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Create the deferred-free bpobj. Turn off compression
|
|
* because sync-to-convergence takes longer if the blocksize
|
|
* keeps changing.
|
|
*/
|
|
obj = bpobj_alloc(spa->spa_meta_objset, 1 << 14, tx);
|
|
dmu_object_set_compress(spa->spa_meta_objset, obj,
|
|
ZIO_COMPRESS_OFF, tx);
|
|
if (zap_add(spa->spa_meta_objset,
|
|
DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_SYNC_BPOBJ,
|
|
sizeof (uint64_t), 1, &obj, tx) != 0) {
|
|
cmn_err(CE_PANIC, "failed to add bpobj");
|
|
}
|
|
VERIFY3U(0, ==, bpobj_open(&spa->spa_deferred_bpobj,
|
|
spa->spa_meta_objset, obj));
|
|
|
|
/*
|
|
* Generate some random noise for salted checksums to operate on.
|
|
*/
|
|
(void) random_get_pseudo_bytes(spa->spa_cksum_salt.zcs_bytes,
|
|
sizeof (spa->spa_cksum_salt.zcs_bytes));
|
|
|
|
/*
|
|
* Set pool properties.
|
|
*/
|
|
spa->spa_bootfs = zpool_prop_default_numeric(ZPOOL_PROP_BOOTFS);
|
|
spa->spa_delegation = zpool_prop_default_numeric(ZPOOL_PROP_DELEGATION);
|
|
spa->spa_failmode = zpool_prop_default_numeric(ZPOOL_PROP_FAILUREMODE);
|
|
spa->spa_autoexpand = zpool_prop_default_numeric(ZPOOL_PROP_AUTOEXPAND);
|
|
spa->spa_multihost = zpool_prop_default_numeric(ZPOOL_PROP_MULTIHOST);
|
|
spa->spa_autotrim = zpool_prop_default_numeric(ZPOOL_PROP_AUTOTRIM);
|
|
|
|
if (props != NULL) {
|
|
spa_configfile_set(spa, props, B_FALSE);
|
|
spa_sync_props(props, tx);
|
|
}
|
|
|
|
for (int i = 0; i < ndraid; i++)
|
|
spa_feature_incr(spa, SPA_FEATURE_DRAID, tx);
|
|
|
|
dmu_tx_commit(tx);
|
|
|
|
spa->spa_sync_on = B_TRUE;
|
|
txg_sync_start(dp);
|
|
mmp_thread_start(spa);
|
|
txg_wait_synced(dp, txg);
|
|
|
|
spa_spawn_aux_threads(spa);
|
|
|
|
spa_write_cachefile(spa, B_FALSE, B_TRUE);
|
|
|
|
/*
|
|
* Don't count references from objsets that are already closed
|
|
* and are making their way through the eviction process.
|
|
*/
|
|
spa_evicting_os_wait(spa);
|
|
spa->spa_minref = zfs_refcount_count(&spa->spa_refcount);
|
|
spa->spa_load_state = SPA_LOAD_NONE;
|
|
|
|
mutex_exit(&spa_namespace_lock);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Import a non-root pool into the system.
|
|
*/
|
|
int
|
|
spa_import(char *pool, nvlist_t *config, nvlist_t *props, uint64_t flags)
|
|
{
|
|
spa_t *spa;
|
|
char *altroot = NULL;
|
|
spa_load_state_t state = SPA_LOAD_IMPORT;
|
|
zpool_load_policy_t policy;
|
|
spa_mode_t mode = spa_mode_global;
|
|
uint64_t readonly = B_FALSE;
|
|
int error;
|
|
nvlist_t *nvroot;
|
|
nvlist_t **spares, **l2cache;
|
|
uint_t nspares, nl2cache;
|
|
|
|
/*
|
|
* If a pool with this name exists, return failure.
|
|
*/
|
|
mutex_enter(&spa_namespace_lock);
|
|
if (spa_lookup(pool) != NULL) {
|
|
mutex_exit(&spa_namespace_lock);
|
|
return (SET_ERROR(EEXIST));
|
|
}
|
|
|
|
/*
|
|
* Create and initialize the spa structure.
|
|
*/
|
|
(void) nvlist_lookup_string(props,
|
|
zpool_prop_to_name(ZPOOL_PROP_ALTROOT), &altroot);
|
|
(void) nvlist_lookup_uint64(props,
|
|
zpool_prop_to_name(ZPOOL_PROP_READONLY), &readonly);
|
|
if (readonly)
|
|
mode = SPA_MODE_READ;
|
|
spa = spa_add(pool, config, altroot);
|
|
spa->spa_import_flags = flags;
|
|
|
|
/*
|
|
* Verbatim import - Take a pool and insert it into the namespace
|
|
* as if it had been loaded at boot.
|
|
*/
|
|
if (spa->spa_import_flags & ZFS_IMPORT_VERBATIM) {
|
|
if (props != NULL)
|
|
spa_configfile_set(spa, props, B_FALSE);
|
|
|
|
spa_write_cachefile(spa, B_FALSE, B_TRUE);
|
|
spa_event_notify(spa, NULL, NULL, ESC_ZFS_POOL_IMPORT);
|
|
zfs_dbgmsg("spa_import: verbatim import of %s", pool);
|
|
mutex_exit(&spa_namespace_lock);
|
|
return (0);
|
|
}
|
|
|
|
spa_activate(spa, mode);
|
|
|
|
/*
|
|
* Don't start async tasks until we know everything is healthy.
|
|
*/
|
|
spa_async_suspend(spa);
|
|
|
|
zpool_get_load_policy(config, &policy);
|
|
if (policy.zlp_rewind & ZPOOL_DO_REWIND)
|
|
state = SPA_LOAD_RECOVER;
|
|
|
|
spa->spa_config_source = SPA_CONFIG_SRC_TRYIMPORT;
|
|
|
|
if (state != SPA_LOAD_RECOVER) {
|
|
spa->spa_last_ubsync_txg = spa->spa_load_txg = 0;
|
|
zfs_dbgmsg("spa_import: importing %s", pool);
|
|
} else {
|
|
zfs_dbgmsg("spa_import: importing %s, max_txg=%lld "
|
|
"(RECOVERY MODE)", pool, (longlong_t)policy.zlp_txg);
|
|
}
|
|
error = spa_load_best(spa, state, policy.zlp_txg, policy.zlp_rewind);
|
|
|
|
/*
|
|
* Propagate anything learned while loading the pool and pass it
|
|
* back to caller (i.e. rewind info, missing devices, etc).
|
|
*/
|
|
VERIFY(nvlist_add_nvlist(config, ZPOOL_CONFIG_LOAD_INFO,
|
|
spa->spa_load_info) == 0);
|
|
|
|
spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER);
|
|
/*
|
|
* Toss any existing sparelist, as it doesn't have any validity
|
|
* anymore, and conflicts with spa_has_spare().
|
|
*/
|
|
if (spa->spa_spares.sav_config) {
|
|
nvlist_free(spa->spa_spares.sav_config);
|
|
spa->spa_spares.sav_config = NULL;
|
|
spa_load_spares(spa);
|
|
}
|
|
if (spa->spa_l2cache.sav_config) {
|
|
nvlist_free(spa->spa_l2cache.sav_config);
|
|
spa->spa_l2cache.sav_config = NULL;
|
|
spa_load_l2cache(spa);
|
|
}
|
|
|
|
VERIFY(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE,
|
|
&nvroot) == 0);
|
|
spa_config_exit(spa, SCL_ALL, FTAG);
|
|
|
|
if (props != NULL)
|
|
spa_configfile_set(spa, props, B_FALSE);
|
|
|
|
if (error != 0 || (props && spa_writeable(spa) &&
|
|
(error = spa_prop_set(spa, props)))) {
|
|
spa_unload(spa);
|
|
spa_deactivate(spa);
|
|
spa_remove(spa);
|
|
mutex_exit(&spa_namespace_lock);
|
|
return (error);
|
|
}
|
|
|
|
spa_async_resume(spa);
|
|
|
|
/*
|
|
* Override any spares and level 2 cache devices as specified by
|
|
* the user, as these may have correct device names/devids, etc.
|
|
*/
|
|
if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES,
|
|
&spares, &nspares) == 0) {
|
|
if (spa->spa_spares.sav_config)
|
|
VERIFY(nvlist_remove(spa->spa_spares.sav_config,
|
|
ZPOOL_CONFIG_SPARES, DATA_TYPE_NVLIST_ARRAY) == 0);
|
|
else
|
|
VERIFY(nvlist_alloc(&spa->spa_spares.sav_config,
|
|
NV_UNIQUE_NAME, KM_SLEEP) == 0);
|
|
VERIFY(nvlist_add_nvlist_array(spa->spa_spares.sav_config,
|
|
ZPOOL_CONFIG_SPARES, spares, nspares) == 0);
|
|
spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER);
|
|
spa_load_spares(spa);
|
|
spa_config_exit(spa, SCL_ALL, FTAG);
|
|
spa->spa_spares.sav_sync = B_TRUE;
|
|
}
|
|
if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_L2CACHE,
|
|
&l2cache, &nl2cache) == 0) {
|
|
if (spa->spa_l2cache.sav_config)
|
|
VERIFY(nvlist_remove(spa->spa_l2cache.sav_config,
|
|
ZPOOL_CONFIG_L2CACHE, DATA_TYPE_NVLIST_ARRAY) == 0);
|
|
else
|
|
VERIFY(nvlist_alloc(&spa->spa_l2cache.sav_config,
|
|
NV_UNIQUE_NAME, KM_SLEEP) == 0);
|
|
VERIFY(nvlist_add_nvlist_array(spa->spa_l2cache.sav_config,
|
|
ZPOOL_CONFIG_L2CACHE, l2cache, nl2cache) == 0);
|
|
spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER);
|
|
spa_load_l2cache(spa);
|
|
spa_config_exit(spa, SCL_ALL, FTAG);
|
|
spa->spa_l2cache.sav_sync = B_TRUE;
|
|
}
|
|
|
|
/*
|
|
* Check for any removed devices.
|
|
*/
|
|
if (spa->spa_autoreplace) {
|
|
spa_aux_check_removed(&spa->spa_spares);
|
|
spa_aux_check_removed(&spa->spa_l2cache);
|
|
}
|
|
|
|
if (spa_writeable(spa)) {
|
|
/*
|
|
* Update the config cache to include the newly-imported pool.
|
|
*/
|
|
spa_config_update(spa, SPA_CONFIG_UPDATE_POOL);
|
|
}
|
|
|
|
/*
|
|
* It's possible that the pool was expanded while it was exported.
|
|
* We kick off an async task to handle this for us.
|
|
*/
|
|
spa_async_request(spa, SPA_ASYNC_AUTOEXPAND);
|
|
|
|
spa_history_log_version(spa, "import", NULL);
|
|
|
|
spa_event_notify(spa, NULL, NULL, ESC_ZFS_POOL_IMPORT);
|
|
|
|
mutex_exit(&spa_namespace_lock);
|
|
|
|
zvol_create_minors_recursive(pool);
|
|
|
|
return (0);
|
|
}
|
|
|
|
nvlist_t *
|
|
spa_tryimport(nvlist_t *tryconfig)
|
|
{
|
|
nvlist_t *config = NULL;
|
|
char *poolname, *cachefile;
|
|
spa_t *spa;
|
|
uint64_t state;
|
|
int error;
|
|
zpool_load_policy_t policy;
|
|
|
|
if (nvlist_lookup_string(tryconfig, ZPOOL_CONFIG_POOL_NAME, &poolname))
|
|
return (NULL);
|
|
|
|
if (nvlist_lookup_uint64(tryconfig, ZPOOL_CONFIG_POOL_STATE, &state))
|
|
return (NULL);
|
|
|
|
/*
|
|
* Create and initialize the spa structure.
|
|
*/
|
|
mutex_enter(&spa_namespace_lock);
|
|
spa = spa_add(TRYIMPORT_NAME, tryconfig, NULL);
|
|
spa_activate(spa, SPA_MODE_READ);
|
|
|
|
/*
|
|
* Rewind pool if a max txg was provided.
|
|
*/
|
|
zpool_get_load_policy(spa->spa_config, &policy);
|
|
if (policy.zlp_txg != UINT64_MAX) {
|
|
spa->spa_load_max_txg = policy.zlp_txg;
|
|
spa->spa_extreme_rewind = B_TRUE;
|
|
zfs_dbgmsg("spa_tryimport: importing %s, max_txg=%lld",
|
|
poolname, (longlong_t)policy.zlp_txg);
|
|
} else {
|
|
zfs_dbgmsg("spa_tryimport: importing %s", poolname);
|
|
}
|
|
|
|
if (nvlist_lookup_string(tryconfig, ZPOOL_CONFIG_CACHEFILE, &cachefile)
|
|
== 0) {
|
|
zfs_dbgmsg("spa_tryimport: using cachefile '%s'", cachefile);
|
|
spa->spa_config_source = SPA_CONFIG_SRC_CACHEFILE;
|
|
} else {
|
|
spa->spa_config_source = SPA_CONFIG_SRC_SCAN;
|
|
}
|
|
|
|
error = spa_load(spa, SPA_LOAD_TRYIMPORT, SPA_IMPORT_EXISTING);
|
|
|
|
/*
|
|
* If 'tryconfig' was at least parsable, return the current config.
|
|
*/
|
|
if (spa->spa_root_vdev != NULL) {
|
|
config = spa_config_generate(spa, NULL, -1ULL, B_TRUE);
|
|
VERIFY(nvlist_add_string(config, ZPOOL_CONFIG_POOL_NAME,
|
|
poolname) == 0);
|
|
VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_STATE,
|
|
state) == 0);
|
|
VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_TIMESTAMP,
|
|
spa->spa_uberblock.ub_timestamp) == 0);
|
|
VERIFY(nvlist_add_nvlist(config, ZPOOL_CONFIG_LOAD_INFO,
|
|
spa->spa_load_info) == 0);
|
|
VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_ERRATA,
|
|
spa->spa_errata) == 0);
|
|
|
|
/*
|
|
* If the bootfs property exists on this pool then we
|
|
* copy it out so that external consumers can tell which
|
|
* pools are bootable.
|
|
*/
|
|
if ((!error || error == EEXIST) && spa->spa_bootfs) {
|
|
char *tmpname = kmem_alloc(MAXPATHLEN, KM_SLEEP);
|
|
|
|
/*
|
|
* We have to play games with the name since the
|
|
* pool was opened as TRYIMPORT_NAME.
|
|
*/
|
|
if (dsl_dsobj_to_dsname(spa_name(spa),
|
|
spa->spa_bootfs, tmpname) == 0) {
|
|
char *cp;
|
|
char *dsname;
|
|
|
|
dsname = kmem_alloc(MAXPATHLEN, KM_SLEEP);
|
|
|
|
cp = strchr(tmpname, '/');
|
|
if (cp == NULL) {
|
|
(void) strlcpy(dsname, tmpname,
|
|
MAXPATHLEN);
|
|
} else {
|
|
(void) snprintf(dsname, MAXPATHLEN,
|
|
"%s/%s", poolname, ++cp);
|
|
}
|
|
VERIFY(nvlist_add_string(config,
|
|
ZPOOL_CONFIG_BOOTFS, dsname) == 0);
|
|
kmem_free(dsname, MAXPATHLEN);
|
|
}
|
|
kmem_free(tmpname, MAXPATHLEN);
|
|
}
|
|
|
|
/*
|
|
* Add the list of hot spares and level 2 cache devices.
|
|
*/
|
|
spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
|
|
spa_add_spares(spa, config);
|
|
spa_add_l2cache(spa, config);
|
|
spa_config_exit(spa, SCL_CONFIG, FTAG);
|
|
}
|
|
|
|
spa_unload(spa);
|
|
spa_deactivate(spa);
|
|
spa_remove(spa);
|
|
mutex_exit(&spa_namespace_lock);
|
|
|
|
return (config);
|
|
}
|
|
|
|
/*
|
|
* Pool export/destroy
|
|
*
|
|
* The act of destroying or exporting a pool is very simple. We make sure there
|
|
* is no more pending I/O and any references to the pool are gone. Then, we
|
|
* update the pool state and sync all the labels to disk, removing the
|
|
* configuration from the cache afterwards. If the 'hardforce' flag is set, then
|
|
* we don't sync the labels or remove the configuration cache.
|
|
*/
|
|
static int
|
|
spa_export_common(const char *pool, int new_state, nvlist_t **oldconfig,
|
|
boolean_t force, boolean_t hardforce)
|
|
{
|
|
int error;
|
|
spa_t *spa;
|
|
|
|
if (oldconfig)
|
|
*oldconfig = NULL;
|
|
|
|
if (!(spa_mode_global & SPA_MODE_WRITE))
|
|
return (SET_ERROR(EROFS));
|
|
|
|
mutex_enter(&spa_namespace_lock);
|
|
if ((spa = spa_lookup(pool)) == NULL) {
|
|
mutex_exit(&spa_namespace_lock);
|
|
return (SET_ERROR(ENOENT));
|
|
}
|
|
|
|
if (spa->spa_is_exporting) {
|
|
/* the pool is being exported by another thread */
|
|
mutex_exit(&spa_namespace_lock);
|
|
return (SET_ERROR(ZFS_ERR_EXPORT_IN_PROGRESS));
|
|
}
|
|
spa->spa_is_exporting = B_TRUE;
|
|
|
|
/*
|
|
* Put a hold on the pool, drop the namespace lock, stop async tasks,
|
|
* reacquire the namespace lock, and see if we can export.
|
|
*/
|
|
spa_open_ref(spa, FTAG);
|
|
mutex_exit(&spa_namespace_lock);
|
|
spa_async_suspend(spa);
|
|
if (spa->spa_zvol_taskq) {
|
|
zvol_remove_minors(spa, spa_name(spa), B_TRUE);
|
|
taskq_wait(spa->spa_zvol_taskq);
|
|
}
|
|
mutex_enter(&spa_namespace_lock);
|
|
spa_close(spa, FTAG);
|
|
|
|
if (spa->spa_state == POOL_STATE_UNINITIALIZED)
|
|
goto export_spa;
|
|
/*
|
|
* The pool will be in core if it's openable, in which case we can
|
|
* modify its state. Objsets may be open only because they're dirty,
|
|
* so we have to force it to sync before checking spa_refcnt.
|
|
*/
|
|
if (spa->spa_sync_on) {
|
|
txg_wait_synced(spa->spa_dsl_pool, 0);
|
|
spa_evicting_os_wait(spa);
|
|
}
|
|
|
|
/*
|
|
* A pool cannot be exported or destroyed if there are active
|
|
* references. If we are resetting a pool, allow references by
|
|
* fault injection handlers.
|
|
*/
|
|
if (!spa_refcount_zero(spa) || (spa->spa_inject_ref != 0)) {
|
|
error = SET_ERROR(EBUSY);
|
|
goto fail;
|
|
}
|
|
|
|
if (spa->spa_sync_on) {
|
|
/*
|
|
* A pool cannot be exported if it has an active shared spare.
|
|
* This is to prevent other pools stealing the active spare
|
|
* from an exported pool. At user's own will, such pool can
|
|
* be forcedly exported.
|
|
*/
|
|
if (!force && new_state == POOL_STATE_EXPORTED &&
|
|
spa_has_active_shared_spare(spa)) {
|
|
error = SET_ERROR(EXDEV);
|
|
goto fail;
|
|
}
|
|
|
|
/*
|
|
* We're about to export or destroy this pool. Make sure
|
|
* we stop all initialization and trim activity here before
|
|
* we set the spa_final_txg. This will ensure that all
|
|
* dirty data resulting from the initialization is
|
|
* committed to disk before we unload the pool.
|
|
*/
|
|
if (spa->spa_root_vdev != NULL) {
|
|
vdev_t *rvd = spa->spa_root_vdev;
|
|
vdev_initialize_stop_all(rvd, VDEV_INITIALIZE_ACTIVE);
|
|
vdev_trim_stop_all(rvd, VDEV_TRIM_ACTIVE);
|
|
vdev_autotrim_stop_all(spa);
|
|
vdev_rebuild_stop_all(spa);
|
|
}
|
|
|
|
/*
|
|
* We want this to be reflected on every label,
|
|
* so mark them all dirty. spa_unload() will do the
|
|
* final sync that pushes these changes out.
|
|
*/
|
|
if (new_state != POOL_STATE_UNINITIALIZED && !hardforce) {
|
|
spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER);
|
|
spa->spa_state = new_state;
|
|
spa->spa_final_txg = spa_last_synced_txg(spa) +
|
|
TXG_DEFER_SIZE + 1;
|
|
vdev_config_dirty(spa->spa_root_vdev);
|
|
spa_config_exit(spa, SCL_ALL, FTAG);
|
|
}
|
|
}
|
|
|
|
export_spa:
|
|
if (new_state == POOL_STATE_DESTROYED)
|
|
spa_event_notify(spa, NULL, NULL, ESC_ZFS_POOL_DESTROY);
|
|
else if (new_state == POOL_STATE_EXPORTED)
|
|
spa_event_notify(spa, NULL, NULL, ESC_ZFS_POOL_EXPORT);
|
|
|
|
if (spa->spa_state != POOL_STATE_UNINITIALIZED) {
|
|
spa_unload(spa);
|
|
spa_deactivate(spa);
|
|
}
|
|
|
|
if (oldconfig && spa->spa_config)
|
|
VERIFY(nvlist_dup(spa->spa_config, oldconfig, 0) == 0);
|
|
|
|
if (new_state != POOL_STATE_UNINITIALIZED) {
|
|
if (!hardforce)
|
|
spa_write_cachefile(spa, B_TRUE, B_TRUE);
|
|
spa_remove(spa);
|
|
} else {
|
|
/*
|
|
* If spa_remove() is not called for this spa_t and
|
|
* there is any possibility that it can be reused,
|
|
* we make sure to reset the exporting flag.
|
|
*/
|
|
spa->spa_is_exporting = B_FALSE;
|
|
}
|
|
|
|
mutex_exit(&spa_namespace_lock);
|
|
return (0);
|
|
|
|
fail:
|
|
spa->spa_is_exporting = B_FALSE;
|
|
spa_async_resume(spa);
|
|
mutex_exit(&spa_namespace_lock);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Destroy a storage pool.
|
|
*/
|
|
int
|
|
spa_destroy(const char *pool)
|
|
{
|
|
return (spa_export_common(pool, POOL_STATE_DESTROYED, NULL,
|
|
B_FALSE, B_FALSE));
|
|
}
|
|
|
|
/*
|
|
* Export a storage pool.
|
|
*/
|
|
int
|
|
spa_export(const char *pool, nvlist_t **oldconfig, boolean_t force,
|
|
boolean_t hardforce)
|
|
{
|
|
return (spa_export_common(pool, POOL_STATE_EXPORTED, oldconfig,
|
|
force, hardforce));
|
|
}
|
|
|
|
/*
|
|
* Similar to spa_export(), this unloads the spa_t without actually removing it
|
|
* from the namespace in any way.
|
|
*/
|
|
int
|
|
spa_reset(const char *pool)
|
|
{
|
|
return (spa_export_common(pool, POOL_STATE_UNINITIALIZED, NULL,
|
|
B_FALSE, B_FALSE));
|
|
}
|
|
|
|
/*
|
|
* ==========================================================================
|
|
* Device manipulation
|
|
* ==========================================================================
|
|
*/
|
|
|
|
/*
|
|
* This is called as a synctask to increment the draid feature flag
|
|
*/
|
|
static void
|
|
spa_draid_feature_incr(void *arg, dmu_tx_t *tx)
|
|
{
|
|
spa_t *spa = dmu_tx_pool(tx)->dp_spa;
|
|
int draid = (int)(uintptr_t)arg;
|
|
|
|
for (int c = 0; c < draid; c++)
|
|
spa_feature_incr(spa, SPA_FEATURE_DRAID, tx);
|
|
}
|
|
|
|
/*
|
|
* Add a device to a storage pool.
|
|
*/
|
|
int
|
|
spa_vdev_add(spa_t *spa, nvlist_t *nvroot)
|
|
{
|
|
uint64_t txg, ndraid = 0;
|
|
int error;
|
|
vdev_t *rvd = spa->spa_root_vdev;
|
|
vdev_t *vd, *tvd;
|
|
nvlist_t **spares, **l2cache;
|
|
uint_t nspares, nl2cache;
|
|
|
|
ASSERT(spa_writeable(spa));
|
|
|
|
txg = spa_vdev_enter(spa);
|
|
|
|
if ((error = spa_config_parse(spa, &vd, nvroot, NULL, 0,
|
|
VDEV_ALLOC_ADD)) != 0)
|
|
return (spa_vdev_exit(spa, NULL, txg, error));
|
|
|
|
spa->spa_pending_vdev = vd; /* spa_vdev_exit() will clear this */
|
|
|
|
if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, &spares,
|
|
&nspares) != 0)
|
|
nspares = 0;
|
|
|
|
if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_L2CACHE, &l2cache,
|
|
&nl2cache) != 0)
|
|
nl2cache = 0;
|
|
|
|
if (vd->vdev_children == 0 && nspares == 0 && nl2cache == 0)
|
|
return (spa_vdev_exit(spa, vd, txg, EINVAL));
|
|
|
|
if (vd->vdev_children != 0 &&
|
|
(error = vdev_create(vd, txg, B_FALSE)) != 0) {
|
|
return (spa_vdev_exit(spa, vd, txg, error));
|
|
}
|
|
|
|
/*
|
|
* The virtual dRAID spares must be added after vdev tree is created
|
|
* and the vdev guids are generated. The guid of their associated
|
|
* dRAID is stored in the config and used when opening the spare.
|
|
*/
|
|
if ((error = vdev_draid_spare_create(nvroot, vd, &ndraid,
|
|
rvd->vdev_children)) == 0) {
|
|
if (ndraid > 0 && nvlist_lookup_nvlist_array(nvroot,
|
|
ZPOOL_CONFIG_SPARES, &spares, &nspares) != 0)
|
|
nspares = 0;
|
|
} else {
|
|
return (spa_vdev_exit(spa, vd, txg, error));
|
|
}
|
|
|
|
/*
|
|
* We must validate the spares and l2cache devices after checking the
|
|
* children. Otherwise, vdev_inuse() will blindly overwrite the spare.
|
|
*/
|
|
if ((error = spa_validate_aux(spa, nvroot, txg, VDEV_ALLOC_ADD)) != 0)
|
|
return (spa_vdev_exit(spa, vd, txg, error));
|
|
|
|
/*
|
|
* If we are in the middle of a device removal, we can only add
|
|
* devices which match the existing devices in the pool.
|
|
* If we are in the middle of a removal, or have some indirect
|
|
* vdevs, we can not add raidz or dRAID top levels.
|
|
*/
|
|
if (spa->spa_vdev_removal != NULL ||
|
|
spa->spa_removing_phys.sr_prev_indirect_vdev != -1) {
|
|
for (int c = 0; c < vd->vdev_children; c++) {
|
|
tvd = vd->vdev_child[c];
|
|
if (spa->spa_vdev_removal != NULL &&
|
|
tvd->vdev_ashift != spa->spa_max_ashift) {
|
|
return (spa_vdev_exit(spa, vd, txg, EINVAL));
|
|
}
|
|
/* Fail if top level vdev is raidz or a dRAID */
|
|
if (vdev_get_nparity(tvd) != 0)
|
|
return (spa_vdev_exit(spa, vd, txg, EINVAL));
|
|
|
|
/*
|
|
* Need the top level mirror to be
|
|
* a mirror of leaf vdevs only
|
|
*/
|
|
if (tvd->vdev_ops == &vdev_mirror_ops) {
|
|
for (uint64_t cid = 0;
|
|
cid < tvd->vdev_children; cid++) {
|
|
vdev_t *cvd = tvd->vdev_child[cid];
|
|
if (!cvd->vdev_ops->vdev_op_leaf) {
|
|
return (spa_vdev_exit(spa, vd,
|
|
txg, EINVAL));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
for (int c = 0; c < vd->vdev_children; c++) {
|
|
tvd = vd->vdev_child[c];
|
|
vdev_remove_child(vd, tvd);
|
|
tvd->vdev_id = rvd->vdev_children;
|
|
vdev_add_child(rvd, tvd);
|
|
vdev_config_dirty(tvd);
|
|
}
|
|
|
|
if (nspares != 0) {
|
|
spa_set_aux_vdevs(&spa->spa_spares, spares, nspares,
|
|
ZPOOL_CONFIG_SPARES);
|
|
spa_load_spares(spa);
|
|
spa->spa_spares.sav_sync = B_TRUE;
|
|
}
|
|
|
|
if (nl2cache != 0) {
|
|
spa_set_aux_vdevs(&spa->spa_l2cache, l2cache, nl2cache,
|
|
ZPOOL_CONFIG_L2CACHE);
|
|
spa_load_l2cache(spa);
|
|
spa->spa_l2cache.sav_sync = B_TRUE;
|
|
}
|
|
|
|
/*
|
|
* We can't increment a feature while holding spa_vdev so we
|
|
* have to do it in a synctask.
|
|
*/
|
|
if (ndraid != 0) {
|
|
dmu_tx_t *tx;
|
|
|
|
tx = dmu_tx_create_assigned(spa->spa_dsl_pool, txg);
|
|
dsl_sync_task_nowait(spa->spa_dsl_pool, spa_draid_feature_incr,
|
|
(void *)(uintptr_t)ndraid, tx);
|
|
dmu_tx_commit(tx);
|
|
}
|
|
|
|
/*
|
|
* We have to be careful when adding new vdevs to an existing pool.
|
|
* If other threads start allocating from these vdevs before we
|
|
* sync the config cache, and we lose power, then upon reboot we may
|
|
* fail to open the pool because there are DVAs that the config cache
|
|
* can't translate. Therefore, we first add the vdevs without
|
|
* initializing metaslabs; sync the config cache (via spa_vdev_exit());
|
|
* and then let spa_config_update() initialize the new metaslabs.
|
|
*
|
|
* spa_load() checks for added-but-not-initialized vdevs, so that
|
|
* if we lose power at any point in this sequence, the remaining
|
|
* steps will be completed the next time we load the pool.
|
|
*/
|
|
(void) spa_vdev_exit(spa, vd, txg, 0);
|
|
|
|
mutex_enter(&spa_namespace_lock);
|
|
spa_config_update(spa, SPA_CONFIG_UPDATE_POOL);
|
|
spa_event_notify(spa, NULL, NULL, ESC_ZFS_VDEV_ADD);
|
|
mutex_exit(&spa_namespace_lock);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Attach a device to a mirror. The arguments are the path to any device
|
|
* in the mirror, and the nvroot for the new device. If the path specifies
|
|
* a device that is not mirrored, we automatically insert the mirror vdev.
|
|
*
|
|
* If 'replacing' is specified, the new device is intended to replace the
|
|
* existing device; in this case the two devices are made into their own
|
|
* mirror using the 'replacing' vdev, which is functionally identical to
|
|
* the mirror vdev (it actually reuses all the same ops) but has a few
|
|
* extra rules: you can't attach to it after it's been created, and upon
|
|
* completion of resilvering, the first disk (the one being replaced)
|
|
* is automatically detached.
|
|
*
|
|
* If 'rebuild' is specified, then sequential reconstruction (a.ka. rebuild)
|
|
* should be performed instead of traditional healing reconstruction. From
|
|
* an administrators perspective these are both resilver operations.
|
|
*/
|
|
int
|
|
spa_vdev_attach(spa_t *spa, uint64_t guid, nvlist_t *nvroot, int replacing,
|
|
int rebuild)
|
|
{
|
|
uint64_t txg, dtl_max_txg;
|
|
vdev_t *rvd = spa->spa_root_vdev;
|
|
vdev_t *oldvd, *newvd, *newrootvd, *pvd, *tvd;
|
|
vdev_ops_t *pvops;
|
|
char *oldvdpath, *newvdpath;
|
|
int newvd_isspare;
|
|
int error;
|
|
|
|
ASSERT(spa_writeable(spa));
|
|
|
|
txg = spa_vdev_enter(spa);
|
|
|
|
oldvd = spa_lookup_by_guid(spa, guid, B_FALSE);
|
|
|
|
ASSERT(MUTEX_HELD(&spa_namespace_lock));
|
|
if (spa_feature_is_active(spa, SPA_FEATURE_POOL_CHECKPOINT)) {
|
|
error = (spa_has_checkpoint(spa)) ?
|
|
ZFS_ERR_CHECKPOINT_EXISTS : ZFS_ERR_DISCARDING_CHECKPOINT;
|
|
return (spa_vdev_exit(spa, NULL, txg, error));
|
|
}
|
|
|
|
if (rebuild) {
|
|
if (!spa_feature_is_enabled(spa, SPA_FEATURE_DEVICE_REBUILD))
|
|
return (spa_vdev_exit(spa, NULL, txg, ENOTSUP));
|
|
|
|
if (dsl_scan_resilvering(spa_get_dsl(spa)))
|
|
return (spa_vdev_exit(spa, NULL, txg,
|
|
ZFS_ERR_RESILVER_IN_PROGRESS));
|
|
} else {
|
|
if (vdev_rebuild_active(rvd))
|
|
return (spa_vdev_exit(spa, NULL, txg,
|
|
ZFS_ERR_REBUILD_IN_PROGRESS));
|
|
}
|
|
|
|
if (spa->spa_vdev_removal != NULL)
|
|
return (spa_vdev_exit(spa, NULL, txg, EBUSY));
|
|
|
|
if (oldvd == NULL)
|
|
return (spa_vdev_exit(spa, NULL, txg, ENODEV));
|
|
|
|
if (!oldvd->vdev_ops->vdev_op_leaf)
|
|
return (spa_vdev_exit(spa, NULL, txg, ENOTSUP));
|
|
|
|
pvd = oldvd->vdev_parent;
|
|
|
|
if ((error = spa_config_parse(spa, &newrootvd, nvroot, NULL, 0,
|
|
VDEV_ALLOC_ATTACH)) != 0)
|
|
return (spa_vdev_exit(spa, NULL, txg, EINVAL));
|
|
|
|
if (newrootvd->vdev_children != 1)
|
|
return (spa_vdev_exit(spa, newrootvd, txg, EINVAL));
|
|
|
|
newvd = newrootvd->vdev_child[0];
|
|
|
|
if (!newvd->vdev_ops->vdev_op_leaf)
|
|
return (spa_vdev_exit(spa, newrootvd, txg, EINVAL));
|
|
|
|
if ((error = vdev_create(newrootvd, txg, replacing)) != 0)
|
|
return (spa_vdev_exit(spa, newrootvd, txg, error));
|
|
|
|
/*
|
|
* Spares can't replace logs
|
|
*/
|
|
if (oldvd->vdev_top->vdev_islog && newvd->vdev_isspare)
|
|
return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP));
|
|
|
|
/*
|
|
* A dRAID spare can only replace a child of its parent dRAID vdev.
|
|
*/
|
|
if (newvd->vdev_ops == &vdev_draid_spare_ops &&
|
|
oldvd->vdev_top != vdev_draid_spare_get_parent(newvd)) {
|
|
return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP));
|
|
}
|
|
|
|
if (rebuild) {
|
|
/*
|
|
* For rebuilds, the top vdev must support reconstruction
|
|
* using only space maps. This means the only allowable
|
|
* vdevs types are the root vdev, a mirror, or dRAID.
|
|
*/
|
|
tvd = pvd;
|
|
if (pvd->vdev_top != NULL)
|
|
tvd = pvd->vdev_top;
|
|
|
|
if (tvd->vdev_ops != &vdev_mirror_ops &&
|
|
tvd->vdev_ops != &vdev_root_ops &&
|
|
tvd->vdev_ops != &vdev_draid_ops) {
|
|
return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP));
|
|
}
|
|
}
|
|
|
|
if (!replacing) {
|
|
/*
|
|
* For attach, the only allowable parent is a mirror or the root
|
|
* vdev.
|
|
*/
|
|
if (pvd->vdev_ops != &vdev_mirror_ops &&
|
|
pvd->vdev_ops != &vdev_root_ops)
|
|
return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP));
|
|
|
|
pvops = &vdev_mirror_ops;
|
|
} else {
|
|
/*
|
|
* Active hot spares can only be replaced by inactive hot
|
|
* spares.
|
|
*/
|
|
if (pvd->vdev_ops == &vdev_spare_ops &&
|
|
oldvd->vdev_isspare &&
|
|
!spa_has_spare(spa, newvd->vdev_guid))
|
|
return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP));
|
|
|
|
/*
|
|
* If the source is a hot spare, and the parent isn't already a
|
|
* spare, then we want to create a new hot spare. Otherwise, we
|
|
* want to create a replacing vdev. The user is not allowed to
|
|
* attach to a spared vdev child unless the 'isspare' state is
|
|
* the same (spare replaces spare, non-spare replaces
|
|
* non-spare).
|
|
*/
|
|
if (pvd->vdev_ops == &vdev_replacing_ops &&
|
|
spa_version(spa) < SPA_VERSION_MULTI_REPLACE) {
|
|
return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP));
|
|
} else if (pvd->vdev_ops == &vdev_spare_ops &&
|
|
newvd->vdev_isspare != oldvd->vdev_isspare) {
|
|
return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP));
|
|
}
|
|
|
|
if (newvd->vdev_isspare)
|
|
pvops = &vdev_spare_ops;
|
|
else
|
|
pvops = &vdev_replacing_ops;
|
|
}
|
|
|
|
/*
|
|
* Make sure the new device is big enough.
|
|
*/
|
|
if (newvd->vdev_asize < vdev_get_min_asize(oldvd))
|
|
return (spa_vdev_exit(spa, newrootvd, txg, EOVERFLOW));
|
|
|
|
/*
|
|
* The new device cannot have a higher alignment requirement
|
|
* than the top-level vdev.
|
|
*/
|
|
if (newvd->vdev_ashift > oldvd->vdev_top->vdev_ashift)
|
|
return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP));
|
|
|
|
/*
|
|
* If this is an in-place replacement, update oldvd's path and devid
|
|
* to make it distinguishable from newvd, and unopenable from now on.
|
|
*/
|
|
if (strcmp(oldvd->vdev_path, newvd->vdev_path) == 0) {
|
|
spa_strfree(oldvd->vdev_path);
|
|
oldvd->vdev_path = kmem_alloc(strlen(newvd->vdev_path) + 5,
|
|
KM_SLEEP);
|
|
(void) snprintf(oldvd->vdev_path, strlen(newvd->vdev_path) + 5,
|
|
"%s/%s", newvd->vdev_path, "old");
|
|
if (oldvd->vdev_devid != NULL) {
|
|
spa_strfree(oldvd->vdev_devid);
|
|
oldvd->vdev_devid = NULL;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* If the parent is not a mirror, or if we're replacing, insert the new
|
|
* mirror/replacing/spare vdev above oldvd.
|
|
*/
|
|
if (pvd->vdev_ops != pvops)
|
|
pvd = vdev_add_parent(oldvd, pvops);
|
|
|
|
ASSERT(pvd->vdev_top->vdev_parent == rvd);
|
|
ASSERT(pvd->vdev_ops == pvops);
|
|
ASSERT(oldvd->vdev_parent == pvd);
|
|
|
|
/*
|
|
* Extract the new device from its root and add it to pvd.
|
|
*/
|
|
vdev_remove_child(newrootvd, newvd);
|
|
newvd->vdev_id = pvd->vdev_children;
|
|
newvd->vdev_crtxg = oldvd->vdev_crtxg;
|
|
vdev_add_child(pvd, newvd);
|
|
|
|
/*
|
|
* Reevaluate the parent vdev state.
|
|
*/
|
|
vdev_propagate_state(pvd);
|
|
|
|
tvd = newvd->vdev_top;
|
|
ASSERT(pvd->vdev_top == tvd);
|
|
ASSERT(tvd->vdev_parent == rvd);
|
|
|
|
vdev_config_dirty(tvd);
|
|
|
|
/*
|
|
* Set newvd's DTL to [TXG_INITIAL, dtl_max_txg) so that we account
|
|
* for any dmu_sync-ed blocks. It will propagate upward when
|
|
* spa_vdev_exit() calls vdev_dtl_reassess().
|
|
*/
|
|
dtl_max_txg = txg + TXG_CONCURRENT_STATES;
|
|
|
|
vdev_dtl_dirty(newvd, DTL_MISSING,
|
|
TXG_INITIAL, dtl_max_txg - TXG_INITIAL);
|
|
|
|
if (newvd->vdev_isspare) {
|
|
spa_spare_activate(newvd);
|
|
spa_event_notify(spa, newvd, NULL, ESC_ZFS_VDEV_SPARE);
|
|
}
|
|
|
|
oldvdpath = spa_strdup(oldvd->vdev_path);
|
|
newvdpath = spa_strdup(newvd->vdev_path);
|
|
newvd_isspare = newvd->vdev_isspare;
|
|
|
|
/*
|
|
* Mark newvd's DTL dirty in this txg.
|
|
*/
|
|
vdev_dirty(tvd, VDD_DTL, newvd, txg);
|
|
|
|
/*
|
|
* Schedule the resilver or rebuild to restart in the future. We do
|
|
* this to ensure that dmu_sync-ed blocks have been stitched into the
|
|
* respective datasets.
|
|
*/
|
|
if (rebuild) {
|
|
newvd->vdev_rebuild_txg = txg;
|
|
|
|
vdev_rebuild(tvd);
|
|
} else {
|
|
newvd->vdev_resilver_txg = txg;
|
|
|
|
if (dsl_scan_resilvering(spa_get_dsl(spa)) &&
|
|
spa_feature_is_enabled(spa, SPA_FEATURE_RESILVER_DEFER)) {
|
|
vdev_defer_resilver(newvd);
|
|
} else {
|
|
dsl_scan_restart_resilver(spa->spa_dsl_pool,
|
|
dtl_max_txg);
|
|
}
|
|
}
|
|
|
|
if (spa->spa_bootfs)
|
|
spa_event_notify(spa, newvd, NULL, ESC_ZFS_BOOTFS_VDEV_ATTACH);
|
|
|
|
spa_event_notify(spa, newvd, NULL, ESC_ZFS_VDEV_ATTACH);
|
|
|
|
/*
|
|
* Commit the config
|
|
*/
|
|
(void) spa_vdev_exit(spa, newrootvd, dtl_max_txg, 0);
|
|
|
|
spa_history_log_internal(spa, "vdev attach", NULL,
|
|
"%s vdev=%s %s vdev=%s",
|
|
replacing && newvd_isspare ? "spare in" :
|
|
replacing ? "replace" : "attach", newvdpath,
|
|
replacing ? "for" : "to", oldvdpath);
|
|
|
|
spa_strfree(oldvdpath);
|
|
spa_strfree(newvdpath);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Detach a device from a mirror or replacing vdev.
|
|
*
|
|
* If 'replace_done' is specified, only detach if the parent
|
|
* is a replacing vdev.
|
|
*/
|
|
int
|
|
spa_vdev_detach(spa_t *spa, uint64_t guid, uint64_t pguid, int replace_done)
|
|
{
|
|
uint64_t txg;
|
|
int error;
|
|
vdev_t *rvd __maybe_unused = spa->spa_root_vdev;
|
|
vdev_t *vd, *pvd, *cvd, *tvd;
|
|
boolean_t unspare = B_FALSE;
|
|
uint64_t unspare_guid = 0;
|
|
char *vdpath;
|
|
|
|
ASSERT(spa_writeable(spa));
|
|
|
|
txg = spa_vdev_detach_enter(spa, guid);
|
|
|
|
vd = spa_lookup_by_guid(spa, guid, B_FALSE);
|
|
|
|
/*
|
|
* Besides being called directly from the userland through the
|
|
* ioctl interface, spa_vdev_detach() can be potentially called
|
|
* at the end of spa_vdev_resilver_done().
|
|
*
|
|
* In the regular case, when we have a checkpoint this shouldn't
|
|
* happen as we never empty the DTLs of a vdev during the scrub
|
|
* [see comment in dsl_scan_done()]. Thus spa_vdev_resilvering_done()
|
|
* should never get here when we have a checkpoint.
|
|
*
|
|
* That said, even in a case when we checkpoint the pool exactly
|
|
* as spa_vdev_resilver_done() calls this function everything
|
|
* should be fine as the resilver will return right away.
|
|
*/
|
|
ASSERT(MUTEX_HELD(&spa_namespace_lock));
|
|
if (spa_feature_is_active(spa, SPA_FEATURE_POOL_CHECKPOINT)) {
|
|
error = (spa_has_checkpoint(spa)) ?
|
|
ZFS_ERR_CHECKPOINT_EXISTS : ZFS_ERR_DISCARDING_CHECKPOINT;
|
|
return (spa_vdev_exit(spa, NULL, txg, error));
|
|
}
|
|
|
|
if (vd == NULL)
|
|
return (spa_vdev_exit(spa, NULL, txg, ENODEV));
|
|
|
|
if (!vd->vdev_ops->vdev_op_leaf)
|
|
return (spa_vdev_exit(spa, NULL, txg, ENOTSUP));
|
|
|
|
pvd = vd->vdev_parent;
|
|
|
|
/*
|
|
* If the parent/child relationship is not as expected, don't do it.
|
|
* Consider M(A,R(B,C)) -- that is, a mirror of A with a replacing
|
|
* vdev that's replacing B with C. The user's intent in replacing
|
|
* is to go from M(A,B) to M(A,C). If the user decides to cancel
|
|
* the replace by detaching C, the expected behavior is to end up
|
|
* M(A,B). But suppose that right after deciding to detach C,
|
|
* the replacement of B completes. We would have M(A,C), and then
|
|
* ask to detach C, which would leave us with just A -- not what
|
|
* the user wanted. To prevent this, we make sure that the
|
|
* parent/child relationship hasn't changed -- in this example,
|
|
* that C's parent is still the replacing vdev R.
|
|
*/
|
|
if (pvd->vdev_guid != pguid && pguid != 0)
|
|
return (spa_vdev_exit(spa, NULL, txg, EBUSY));
|
|
|
|
/*
|
|
* Only 'replacing' or 'spare' vdevs can be replaced.
|
|
*/
|
|
if (replace_done && pvd->vdev_ops != &vdev_replacing_ops &&
|
|
pvd->vdev_ops != &vdev_spare_ops)
|
|
return (spa_vdev_exit(spa, NULL, txg, ENOTSUP));
|
|
|
|
ASSERT(pvd->vdev_ops != &vdev_spare_ops ||
|
|
spa_version(spa) >= SPA_VERSION_SPARES);
|
|
|
|
/*
|
|
* Only mirror, replacing, and spare vdevs support detach.
|
|
*/
|
|
if (pvd->vdev_ops != &vdev_replacing_ops &&
|
|
pvd->vdev_ops != &vdev_mirror_ops &&
|
|
pvd->vdev_ops != &vdev_spare_ops)
|
|
return (spa_vdev_exit(spa, NULL, txg, ENOTSUP));
|
|
|
|
/*
|
|
* If this device has the only valid copy of some data,
|
|
* we cannot safely detach it.
|
|
*/
|
|
if (vdev_dtl_required(vd))
|
|
return (spa_vdev_exit(spa, NULL, txg, EBUSY));
|
|
|
|
ASSERT(pvd->vdev_children >= 2);
|
|
|
|
/*
|
|
* If we are detaching the second disk from a replacing vdev, then
|
|
* check to see if we changed the original vdev's path to have "/old"
|
|
* at the end in spa_vdev_attach(). If so, undo that change now.
|
|
*/
|
|
if (pvd->vdev_ops == &vdev_replacing_ops && vd->vdev_id > 0 &&
|
|
vd->vdev_path != NULL) {
|
|
size_t len = strlen(vd->vdev_path);
|
|
|
|
for (int c = 0; c < pvd->vdev_children; c++) {
|
|
cvd = pvd->vdev_child[c];
|
|
|
|
if (cvd == vd || cvd->vdev_path == NULL)
|
|
continue;
|
|
|
|
if (strncmp(cvd->vdev_path, vd->vdev_path, len) == 0 &&
|
|
strcmp(cvd->vdev_path + len, "/old") == 0) {
|
|
spa_strfree(cvd->vdev_path);
|
|
cvd->vdev_path = spa_strdup(vd->vdev_path);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* If we are detaching the original disk from a normal spare, then it
|
|
* implies that the spare should become a real disk, and be removed
|
|
* from the active spare list for the pool. dRAID spares on the
|
|
* other hand are coupled to the pool and thus should never be removed
|
|
* from the spares list.
|
|
*/
|
|
if (pvd->vdev_ops == &vdev_spare_ops && vd->vdev_id == 0) {
|
|
vdev_t *last_cvd = pvd->vdev_child[pvd->vdev_children - 1];
|
|
|
|
if (last_cvd->vdev_isspare &&
|
|
last_cvd->vdev_ops != &vdev_draid_spare_ops) {
|
|
unspare = B_TRUE;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Erase the disk labels so the disk can be used for other things.
|
|
* This must be done after all other error cases are handled,
|
|
* but before we disembowel vd (so we can still do I/O to it).
|
|
* But if we can't do it, don't treat the error as fatal --
|
|
* it may be that the unwritability of the disk is the reason
|
|
* it's being detached!
|
|
*/
|
|
error = vdev_label_init(vd, 0, VDEV_LABEL_REMOVE);
|
|
|
|
/*
|
|
* Remove vd from its parent and compact the parent's children.
|
|
*/
|
|
vdev_remove_child(pvd, vd);
|
|
vdev_compact_children(pvd);
|
|
|
|
/*
|
|
* Remember one of the remaining children so we can get tvd below.
|
|
*/
|
|
cvd = pvd->vdev_child[pvd->vdev_children - 1];
|
|
|
|
/*
|
|
* If we need to remove the remaining child from the list of hot spares,
|
|
* do it now, marking the vdev as no longer a spare in the process.
|
|
* We must do this before vdev_remove_parent(), because that can
|
|
* change the GUID if it creates a new toplevel GUID. For a similar
|
|
* reason, we must remove the spare now, in the same txg as the detach;
|
|
* otherwise someone could attach a new sibling, change the GUID, and
|
|
* the subsequent attempt to spa_vdev_remove(unspare_guid) would fail.
|
|
*/
|
|
if (unspare) {
|
|
ASSERT(cvd->vdev_isspare);
|
|
spa_spare_remove(cvd);
|
|
unspare_guid = cvd->vdev_guid;
|
|
(void) spa_vdev_remove(spa, unspare_guid, B_TRUE);
|
|
cvd->vdev_unspare = B_TRUE;
|
|
}
|
|
|
|
/*
|
|
* If the parent mirror/replacing vdev only has one child,
|
|
* the parent is no longer needed. Remove it from the tree.
|
|
*/
|
|
if (pvd->vdev_children == 1) {
|
|
if (pvd->vdev_ops == &vdev_spare_ops)
|
|
cvd->vdev_unspare = B_FALSE;
|
|
vdev_remove_parent(cvd);
|
|
}
|
|
|
|
/*
|
|
* We don't set tvd until now because the parent we just removed
|
|
* may have been the previous top-level vdev.
|
|
*/
|
|
tvd = cvd->vdev_top;
|
|
ASSERT(tvd->vdev_parent == rvd);
|
|
|
|
/*
|
|
* Reevaluate the parent vdev state.
|
|
*/
|
|
vdev_propagate_state(cvd);
|
|
|
|
/*
|
|
* If the 'autoexpand' property is set on the pool then automatically
|
|
* try to expand the size of the pool. For example if the device we
|
|
* just detached was smaller than the others, it may be possible to
|
|
* add metaslabs (i.e. grow the pool). We need to reopen the vdev
|
|
* first so that we can obtain the updated sizes of the leaf vdevs.
|
|
*/
|
|
if (spa->spa_autoexpand) {
|
|
vdev_reopen(tvd);
|
|
vdev_expand(tvd, txg);
|
|
}
|
|
|
|
vdev_config_dirty(tvd);
|
|
|
|
/*
|
|
* Mark vd's DTL as dirty in this txg. vdev_dtl_sync() will see that
|
|
* vd->vdev_detached is set and free vd's DTL object in syncing context.
|
|
* But first make sure we're not on any *other* txg's DTL list, to
|
|
* prevent vd from being accessed after it's freed.
|
|
*/
|
|
vdpath = spa_strdup(vd->vdev_path ? vd->vdev_path : "none");
|
|
for (int t = 0; t < TXG_SIZE; t++)
|
|
(void) txg_list_remove_this(&tvd->vdev_dtl_list, vd, t);
|
|
vd->vdev_detached = B_TRUE;
|
|
vdev_dirty(tvd, VDD_DTL, vd, txg);
|
|
|
|
spa_event_notify(spa, vd, NULL, ESC_ZFS_VDEV_REMOVE);
|
|
spa_notify_waiters(spa);
|
|
|
|
/* hang on to the spa before we release the lock */
|
|
spa_open_ref(spa, FTAG);
|
|
|
|
error = spa_vdev_exit(spa, vd, txg, 0);
|
|
|
|
spa_history_log_internal(spa, "detach", NULL,
|
|
"vdev=%s", vdpath);
|
|
spa_strfree(vdpath);
|
|
|
|
/*
|
|
* If this was the removal of the original device in a hot spare vdev,
|
|
* then we want to go through and remove the device from the hot spare
|
|
* list of every other pool.
|
|
*/
|
|
if (unspare) {
|
|
spa_t *altspa = NULL;
|
|
|
|
mutex_enter(&spa_namespace_lock);
|
|
while ((altspa = spa_next(altspa)) != NULL) {
|
|
if (altspa->spa_state != POOL_STATE_ACTIVE ||
|
|
altspa == spa)
|
|
continue;
|
|
|
|
spa_open_ref(altspa, FTAG);
|
|
mutex_exit(&spa_namespace_lock);
|
|
(void) spa_vdev_remove(altspa, unspare_guid, B_TRUE);
|
|
mutex_enter(&spa_namespace_lock);
|
|
spa_close(altspa, FTAG);
|
|
}
|
|
mutex_exit(&spa_namespace_lock);
|
|
|
|
/* search the rest of the vdevs for spares to remove */
|
|
spa_vdev_resilver_done(spa);
|
|
}
|
|
|
|
/* all done with the spa; OK to release */
|
|
mutex_enter(&spa_namespace_lock);
|
|
spa_close(spa, FTAG);
|
|
mutex_exit(&spa_namespace_lock);
|
|
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
spa_vdev_initialize_impl(spa_t *spa, uint64_t guid, uint64_t cmd_type,
|
|
list_t *vd_list)
|
|
{
|
|
ASSERT(MUTEX_HELD(&spa_namespace_lock));
|
|
|
|
spa_config_enter(spa, SCL_CONFIG | SCL_STATE, FTAG, RW_READER);
|
|
|
|
/* Look up vdev and ensure it's a leaf. */
|
|
vdev_t *vd = spa_lookup_by_guid(spa, guid, B_FALSE);
|
|
if (vd == NULL || vd->vdev_detached) {
|
|
spa_config_exit(spa, SCL_CONFIG | SCL_STATE, FTAG);
|
|
return (SET_ERROR(ENODEV));
|
|
} else if (!vd->vdev_ops->vdev_op_leaf || !vdev_is_concrete(vd)) {
|
|
spa_config_exit(spa, SCL_CONFIG | SCL_STATE, FTAG);
|
|
return (SET_ERROR(EINVAL));
|
|
} else if (!vdev_writeable(vd)) {
|
|
spa_config_exit(spa, SCL_CONFIG | SCL_STATE, FTAG);
|
|
return (SET_ERROR(EROFS));
|
|
}
|
|
mutex_enter(&vd->vdev_initialize_lock);
|
|
spa_config_exit(spa, SCL_CONFIG | SCL_STATE, FTAG);
|
|
|
|
/*
|
|
* When we activate an initialize action we check to see
|
|
* if the vdev_initialize_thread is NULL. We do this instead
|
|
* of using the vdev_initialize_state since there might be
|
|
* a previous initialization process which has completed but
|
|
* the thread is not exited.
|
|
*/
|
|
if (cmd_type == POOL_INITIALIZE_START &&
|
|
(vd->vdev_initialize_thread != NULL ||
|
|
vd->vdev_top->vdev_removing)) {
|
|
mutex_exit(&vd->vdev_initialize_lock);
|
|
return (SET_ERROR(EBUSY));
|
|
} else if (cmd_type == POOL_INITIALIZE_CANCEL &&
|
|
(vd->vdev_initialize_state != VDEV_INITIALIZE_ACTIVE &&
|
|
vd->vdev_initialize_state != VDEV_INITIALIZE_SUSPENDED)) {
|
|
mutex_exit(&vd->vdev_initialize_lock);
|
|
return (SET_ERROR(ESRCH));
|
|
} else if (cmd_type == POOL_INITIALIZE_SUSPEND &&
|
|
vd->vdev_initialize_state != VDEV_INITIALIZE_ACTIVE) {
|
|
mutex_exit(&vd->vdev_initialize_lock);
|
|
return (SET_ERROR(ESRCH));
|
|
}
|
|
|
|
switch (cmd_type) {
|
|
case POOL_INITIALIZE_START:
|
|
vdev_initialize(vd);
|
|
break;
|
|
case POOL_INITIALIZE_CANCEL:
|
|
vdev_initialize_stop(vd, VDEV_INITIALIZE_CANCELED, vd_list);
|
|
break;
|
|
case POOL_INITIALIZE_SUSPEND:
|
|
vdev_initialize_stop(vd, VDEV_INITIALIZE_SUSPENDED, vd_list);
|
|
break;
|
|
default:
|
|
panic("invalid cmd_type %llu", (unsigned long long)cmd_type);
|
|
}
|
|
mutex_exit(&vd->vdev_initialize_lock);
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
spa_vdev_initialize(spa_t *spa, nvlist_t *nv, uint64_t cmd_type,
|
|
nvlist_t *vdev_errlist)
|
|
{
|
|
int total_errors = 0;
|
|
list_t vd_list;
|
|
|
|
list_create(&vd_list, sizeof (vdev_t),
|
|
offsetof(vdev_t, vdev_initialize_node));
|
|
|
|
/*
|
|
* We hold the namespace lock through the whole function
|
|
* to prevent any changes to the pool while we're starting or
|
|
* stopping initialization. The config and state locks are held so that
|
|
* we can properly assess the vdev state before we commit to
|
|
* the initializing operation.
|
|
*/
|
|
mutex_enter(&spa_namespace_lock);
|
|
|
|
for (nvpair_t *pair = nvlist_next_nvpair(nv, NULL);
|
|
pair != NULL; pair = nvlist_next_nvpair(nv, pair)) {
|
|
uint64_t vdev_guid = fnvpair_value_uint64(pair);
|
|
|
|
int error = spa_vdev_initialize_impl(spa, vdev_guid, cmd_type,
|
|
&vd_list);
|
|
if (error != 0) {
|
|
char guid_as_str[MAXNAMELEN];
|
|
|
|
(void) snprintf(guid_as_str, sizeof (guid_as_str),
|
|
"%llu", (unsigned long long)vdev_guid);
|
|
fnvlist_add_int64(vdev_errlist, guid_as_str, error);
|
|
total_errors++;
|
|
}
|
|
}
|
|
|
|
/* Wait for all initialize threads to stop. */
|
|
vdev_initialize_stop_wait(spa, &vd_list);
|
|
|
|
/* Sync out the initializing state */
|
|
txg_wait_synced(spa->spa_dsl_pool, 0);
|
|
mutex_exit(&spa_namespace_lock);
|
|
|
|
list_destroy(&vd_list);
|
|
|
|
return (total_errors);
|
|
}
|
|
|
|
static int
|
|
spa_vdev_trim_impl(spa_t *spa, uint64_t guid, uint64_t cmd_type,
|
|
uint64_t rate, boolean_t partial, boolean_t secure, list_t *vd_list)
|
|
{
|
|
ASSERT(MUTEX_HELD(&spa_namespace_lock));
|
|
|
|
spa_config_enter(spa, SCL_CONFIG | SCL_STATE, FTAG, RW_READER);
|
|
|
|
/* Look up vdev and ensure it's a leaf. */
|
|
vdev_t *vd = spa_lookup_by_guid(spa, guid, B_FALSE);
|
|
if (vd == NULL || vd->vdev_detached) {
|
|
spa_config_exit(spa, SCL_CONFIG | SCL_STATE, FTAG);
|
|
return (SET_ERROR(ENODEV));
|
|
} else if (!vd->vdev_ops->vdev_op_leaf || !vdev_is_concrete(vd)) {
|
|
spa_config_exit(spa, SCL_CONFIG | SCL_STATE, FTAG);
|
|
return (SET_ERROR(EINVAL));
|
|
} else if (!vdev_writeable(vd)) {
|
|
spa_config_exit(spa, SCL_CONFIG | SCL_STATE, FTAG);
|
|
return (SET_ERROR(EROFS));
|
|
} else if (!vd->vdev_has_trim) {
|
|
spa_config_exit(spa, SCL_CONFIG | SCL_STATE, FTAG);
|
|
return (SET_ERROR(EOPNOTSUPP));
|
|
} else if (secure && !vd->vdev_has_securetrim) {
|
|
spa_config_exit(spa, SCL_CONFIG | SCL_STATE, FTAG);
|
|
return (SET_ERROR(EOPNOTSUPP));
|
|
}
|
|
mutex_enter(&vd->vdev_trim_lock);
|
|
spa_config_exit(spa, SCL_CONFIG | SCL_STATE, FTAG);
|
|
|
|
/*
|
|
* When we activate a TRIM action we check to see if the
|
|
* vdev_trim_thread is NULL. We do this instead of using the
|
|
* vdev_trim_state since there might be a previous TRIM process
|
|
* which has completed but the thread is not exited.
|
|
*/
|
|
if (cmd_type == POOL_TRIM_START &&
|
|
(vd->vdev_trim_thread != NULL || vd->vdev_top->vdev_removing)) {
|
|
mutex_exit(&vd->vdev_trim_lock);
|
|
return (SET_ERROR(EBUSY));
|
|
} else if (cmd_type == POOL_TRIM_CANCEL &&
|
|
(vd->vdev_trim_state != VDEV_TRIM_ACTIVE &&
|
|
vd->vdev_trim_state != VDEV_TRIM_SUSPENDED)) {
|
|
mutex_exit(&vd->vdev_trim_lock);
|
|
return (SET_ERROR(ESRCH));
|
|
} else if (cmd_type == POOL_TRIM_SUSPEND &&
|
|
vd->vdev_trim_state != VDEV_TRIM_ACTIVE) {
|
|
mutex_exit(&vd->vdev_trim_lock);
|
|
return (SET_ERROR(ESRCH));
|
|
}
|
|
|
|
switch (cmd_type) {
|
|
case POOL_TRIM_START:
|
|
vdev_trim(vd, rate, partial, secure);
|
|
break;
|
|
case POOL_TRIM_CANCEL:
|
|
vdev_trim_stop(vd, VDEV_TRIM_CANCELED, vd_list);
|
|
break;
|
|
case POOL_TRIM_SUSPEND:
|
|
vdev_trim_stop(vd, VDEV_TRIM_SUSPENDED, vd_list);
|
|
break;
|
|
default:
|
|
panic("invalid cmd_type %llu", (unsigned long long)cmd_type);
|
|
}
|
|
mutex_exit(&vd->vdev_trim_lock);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Initiates a manual TRIM for the requested vdevs. This kicks off individual
|
|
* TRIM threads for each child vdev. These threads pass over all of the free
|
|
* space in the vdev's metaslabs and issues TRIM commands for that space.
|
|
*/
|
|
int
|
|
spa_vdev_trim(spa_t *spa, nvlist_t *nv, uint64_t cmd_type, uint64_t rate,
|
|
boolean_t partial, boolean_t secure, nvlist_t *vdev_errlist)
|
|
{
|
|
int total_errors = 0;
|
|
list_t vd_list;
|
|
|
|
list_create(&vd_list, sizeof (vdev_t),
|
|
offsetof(vdev_t, vdev_trim_node));
|
|
|
|
/*
|
|
* We hold the namespace lock through the whole function
|
|
* to prevent any changes to the pool while we're starting or
|
|
* stopping TRIM. The config and state locks are held so that
|
|
* we can properly assess the vdev state before we commit to
|
|
* the TRIM operation.
|
|
*/
|
|
mutex_enter(&spa_namespace_lock);
|
|
|
|
for (nvpair_t *pair = nvlist_next_nvpair(nv, NULL);
|
|
pair != NULL; pair = nvlist_next_nvpair(nv, pair)) {
|
|
uint64_t vdev_guid = fnvpair_value_uint64(pair);
|
|
|
|
int error = spa_vdev_trim_impl(spa, vdev_guid, cmd_type,
|
|
rate, partial, secure, &vd_list);
|
|
if (error != 0) {
|
|
char guid_as_str[MAXNAMELEN];
|
|
|
|
(void) snprintf(guid_as_str, sizeof (guid_as_str),
|
|
"%llu", (unsigned long long)vdev_guid);
|
|
fnvlist_add_int64(vdev_errlist, guid_as_str, error);
|
|
total_errors++;
|
|
}
|
|
}
|
|
|
|
/* Wait for all TRIM threads to stop. */
|
|
vdev_trim_stop_wait(spa, &vd_list);
|
|
|
|
/* Sync out the TRIM state */
|
|
txg_wait_synced(spa->spa_dsl_pool, 0);
|
|
mutex_exit(&spa_namespace_lock);
|
|
|
|
list_destroy(&vd_list);
|
|
|
|
return (total_errors);
|
|
}
|
|
|
|
/*
|
|
* Split a set of devices from their mirrors, and create a new pool from them.
|
|
*/
|
|
int
|
|
spa_vdev_split_mirror(spa_t *spa, char *newname, nvlist_t *config,
|
|
nvlist_t *props, boolean_t exp)
|
|
{
|
|
int error = 0;
|
|
uint64_t txg, *glist;
|
|
spa_t *newspa;
|
|
uint_t c, children, lastlog;
|
|
nvlist_t **child, *nvl, *tmp;
|
|
dmu_tx_t *tx;
|
|
char *altroot = NULL;
|
|
vdev_t *rvd, **vml = NULL; /* vdev modify list */
|
|
boolean_t activate_slog;
|
|
|
|
ASSERT(spa_writeable(spa));
|
|
|
|
txg = spa_vdev_enter(spa);
|
|
|
|
ASSERT(MUTEX_HELD(&spa_namespace_lock));
|
|
if (spa_feature_is_active(spa, SPA_FEATURE_POOL_CHECKPOINT)) {
|
|
error = (spa_has_checkpoint(spa)) ?
|
|
ZFS_ERR_CHECKPOINT_EXISTS : ZFS_ERR_DISCARDING_CHECKPOINT;
|
|
return (spa_vdev_exit(spa, NULL, txg, error));
|
|
}
|
|
|
|
/* clear the log and flush everything up to now */
|
|
activate_slog = spa_passivate_log(spa);
|
|
(void) spa_vdev_config_exit(spa, NULL, txg, 0, FTAG);
|
|
error = spa_reset_logs(spa);
|
|
txg = spa_vdev_config_enter(spa);
|
|
|
|
if (activate_slog)
|
|
spa_activate_log(spa);
|
|
|
|
if (error != 0)
|
|
return (spa_vdev_exit(spa, NULL, txg, error));
|
|
|
|
/* check new spa name before going any further */
|
|
if (spa_lookup(newname) != NULL)
|
|
return (spa_vdev_exit(spa, NULL, txg, EEXIST));
|
|
|
|
/*
|
|
* scan through all the children to ensure they're all mirrors
|
|
*/
|
|
if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, &nvl) != 0 ||
|
|
nvlist_lookup_nvlist_array(nvl, ZPOOL_CONFIG_CHILDREN, &child,
|
|
&children) != 0)
|
|
return (spa_vdev_exit(spa, NULL, txg, EINVAL));
|
|
|
|
/* first, check to ensure we've got the right child count */
|
|
rvd = spa->spa_root_vdev;
|
|
lastlog = 0;
|
|
for (c = 0; c < rvd->vdev_children; c++) {
|
|
vdev_t *vd = rvd->vdev_child[c];
|
|
|
|
/* don't count the holes & logs as children */
|
|
if (vd->vdev_islog || (vd->vdev_ops != &vdev_indirect_ops &&
|
|
!vdev_is_concrete(vd))) {
|
|
if (lastlog == 0)
|
|
lastlog = c;
|
|
continue;
|
|
}
|
|
|
|
lastlog = 0;
|
|
}
|
|
if (children != (lastlog != 0 ? lastlog : rvd->vdev_children))
|
|
return (spa_vdev_exit(spa, NULL, txg, EINVAL));
|
|
|
|
/* next, ensure no spare or cache devices are part of the split */
|
|
if (nvlist_lookup_nvlist(nvl, ZPOOL_CONFIG_SPARES, &tmp) == 0 ||
|
|
nvlist_lookup_nvlist(nvl, ZPOOL_CONFIG_L2CACHE, &tmp) == 0)
|
|
return (spa_vdev_exit(spa, NULL, txg, EINVAL));
|
|
|
|
vml = kmem_zalloc(children * sizeof (vdev_t *), KM_SLEEP);
|
|
glist = kmem_zalloc(children * sizeof (uint64_t), KM_SLEEP);
|
|
|
|
/* then, loop over each vdev and validate it */
|
|
for (c = 0; c < children; c++) {
|
|
uint64_t is_hole = 0;
|
|
|
|
(void) nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_HOLE,
|
|
&is_hole);
|
|
|
|
if (is_hole != 0) {
|
|
if (spa->spa_root_vdev->vdev_child[c]->vdev_ishole ||
|
|
spa->spa_root_vdev->vdev_child[c]->vdev_islog) {
|
|
continue;
|
|
} else {
|
|
error = SET_ERROR(EINVAL);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* deal with indirect vdevs */
|
|
if (spa->spa_root_vdev->vdev_child[c]->vdev_ops ==
|
|
&vdev_indirect_ops)
|
|
continue;
|
|
|
|
/* which disk is going to be split? */
|
|
if (nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_GUID,
|
|
&glist[c]) != 0) {
|
|
error = SET_ERROR(EINVAL);
|
|
break;
|
|
}
|
|
|
|
/* look it up in the spa */
|
|
vml[c] = spa_lookup_by_guid(spa, glist[c], B_FALSE);
|
|
if (vml[c] == NULL) {
|
|
error = SET_ERROR(ENODEV);
|
|
break;
|
|
}
|
|
|
|
/* make sure there's nothing stopping the split */
|
|
if (vml[c]->vdev_parent->vdev_ops != &vdev_mirror_ops ||
|
|
vml[c]->vdev_islog ||
|
|
!vdev_is_concrete(vml[c]) ||
|
|
vml[c]->vdev_isspare ||
|
|
vml[c]->vdev_isl2cache ||
|
|
!vdev_writeable(vml[c]) ||
|
|
vml[c]->vdev_children != 0 ||
|
|
vml[c]->vdev_state != VDEV_STATE_HEALTHY ||
|
|
c != spa->spa_root_vdev->vdev_child[c]->vdev_id) {
|
|
error = SET_ERROR(EINVAL);
|
|
break;
|
|
}
|
|
|
|
if (vdev_dtl_required(vml[c]) ||
|
|
vdev_resilver_needed(vml[c], NULL, NULL)) {
|
|
error = SET_ERROR(EBUSY);
|
|
break;
|
|
}
|
|
|
|
/* we need certain info from the top level */
|
|
VERIFY(nvlist_add_uint64(child[c], ZPOOL_CONFIG_METASLAB_ARRAY,
|
|
vml[c]->vdev_top->vdev_ms_array) == 0);
|
|
VERIFY(nvlist_add_uint64(child[c], ZPOOL_CONFIG_METASLAB_SHIFT,
|
|
vml[c]->vdev_top->vdev_ms_shift) == 0);
|
|
VERIFY(nvlist_add_uint64(child[c], ZPOOL_CONFIG_ASIZE,
|
|
vml[c]->vdev_top->vdev_asize) == 0);
|
|
VERIFY(nvlist_add_uint64(child[c], ZPOOL_CONFIG_ASHIFT,
|
|
vml[c]->vdev_top->vdev_ashift) == 0);
|
|
|
|
/* transfer per-vdev ZAPs */
|
|
ASSERT3U(vml[c]->vdev_leaf_zap, !=, 0);
|
|
VERIFY0(nvlist_add_uint64(child[c],
|
|
ZPOOL_CONFIG_VDEV_LEAF_ZAP, vml[c]->vdev_leaf_zap));
|
|
|
|
ASSERT3U(vml[c]->vdev_top->vdev_top_zap, !=, 0);
|
|
VERIFY0(nvlist_add_uint64(child[c],
|
|
ZPOOL_CONFIG_VDEV_TOP_ZAP,
|
|
vml[c]->vdev_parent->vdev_top_zap));
|
|
}
|
|
|
|
if (error != 0) {
|
|
kmem_free(vml, children * sizeof (vdev_t *));
|
|
kmem_free(glist, children * sizeof (uint64_t));
|
|
return (spa_vdev_exit(spa, NULL, txg, error));
|
|
}
|
|
|
|
/* stop writers from using the disks */
|
|
for (c = 0; c < children; c++) {
|
|
if (vml[c] != NULL)
|
|
vml[c]->vdev_offline = B_TRUE;
|
|
}
|
|
vdev_reopen(spa->spa_root_vdev);
|
|
|
|
/*
|
|
* Temporarily record the splitting vdevs in the spa config. This
|
|
* will disappear once the config is regenerated.
|
|
*/
|
|
VERIFY(nvlist_alloc(&nvl, NV_UNIQUE_NAME, KM_SLEEP) == 0);
|
|
VERIFY(nvlist_add_uint64_array(nvl, ZPOOL_CONFIG_SPLIT_LIST,
|
|
glist, children) == 0);
|
|
kmem_free(glist, children * sizeof (uint64_t));
|
|
|
|
mutex_enter(&spa->spa_props_lock);
|
|
VERIFY(nvlist_add_nvlist(spa->spa_config, ZPOOL_CONFIG_SPLIT,
|
|
nvl) == 0);
|
|
mutex_exit(&spa->spa_props_lock);
|
|
spa->spa_config_splitting = nvl;
|
|
vdev_config_dirty(spa->spa_root_vdev);
|
|
|
|
/* configure and create the new pool */
|
|
VERIFY(nvlist_add_string(config, ZPOOL_CONFIG_POOL_NAME, newname) == 0);
|
|
VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_STATE,
|
|
exp ? POOL_STATE_EXPORTED : POOL_STATE_ACTIVE) == 0);
|
|
VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_VERSION,
|
|
spa_version(spa)) == 0);
|
|
VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_TXG,
|
|
spa->spa_config_txg) == 0);
|
|
VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_GUID,
|
|
spa_generate_guid(NULL)) == 0);
|
|
VERIFY0(nvlist_add_boolean(config, ZPOOL_CONFIG_HAS_PER_VDEV_ZAPS));
|
|
(void) nvlist_lookup_string(props,
|
|
zpool_prop_to_name(ZPOOL_PROP_ALTROOT), &altroot);
|
|
|
|
/* add the new pool to the namespace */
|
|
newspa = spa_add(newname, config, altroot);
|
|
newspa->spa_avz_action = AVZ_ACTION_REBUILD;
|
|
newspa->spa_config_txg = spa->spa_config_txg;
|
|
spa_set_log_state(newspa, SPA_LOG_CLEAR);
|
|
|
|
/* release the spa config lock, retaining the namespace lock */
|
|
spa_vdev_config_exit(spa, NULL, txg, 0, FTAG);
|
|
|
|
if (zio_injection_enabled)
|
|
zio_handle_panic_injection(spa, FTAG, 1);
|
|
|
|
spa_activate(newspa, spa_mode_global);
|
|
spa_async_suspend(newspa);
|
|
|
|
/*
|
|
* Temporarily stop the initializing and TRIM activity. We set the
|
|
* state to ACTIVE so that we know to resume initializing or TRIM
|
|
* once the split has completed.
|
|
*/
|
|
list_t vd_initialize_list;
|
|
list_create(&vd_initialize_list, sizeof (vdev_t),
|
|
offsetof(vdev_t, vdev_initialize_node));
|
|
|
|
list_t vd_trim_list;
|
|
list_create(&vd_trim_list, sizeof (vdev_t),
|
|
offsetof(vdev_t, vdev_trim_node));
|
|
|
|
for (c = 0; c < children; c++) {
|
|
if (vml[c] != NULL && vml[c]->vdev_ops != &vdev_indirect_ops) {
|
|
mutex_enter(&vml[c]->vdev_initialize_lock);
|
|
vdev_initialize_stop(vml[c],
|
|
VDEV_INITIALIZE_ACTIVE, &vd_initialize_list);
|
|
mutex_exit(&vml[c]->vdev_initialize_lock);
|
|
|
|
mutex_enter(&vml[c]->vdev_trim_lock);
|
|
vdev_trim_stop(vml[c], VDEV_TRIM_ACTIVE, &vd_trim_list);
|
|
mutex_exit(&vml[c]->vdev_trim_lock);
|
|
}
|
|
}
|
|
|
|
vdev_initialize_stop_wait(spa, &vd_initialize_list);
|
|
vdev_trim_stop_wait(spa, &vd_trim_list);
|
|
|
|
list_destroy(&vd_initialize_list);
|
|
list_destroy(&vd_trim_list);
|
|
|
|
newspa->spa_config_source = SPA_CONFIG_SRC_SPLIT;
|
|
newspa->spa_is_splitting = B_TRUE;
|
|
|
|
/* create the new pool from the disks of the original pool */
|
|
error = spa_load(newspa, SPA_LOAD_IMPORT, SPA_IMPORT_ASSEMBLE);
|
|
if (error)
|
|
goto out;
|
|
|
|
/* if that worked, generate a real config for the new pool */
|
|
if (newspa->spa_root_vdev != NULL) {
|
|
VERIFY(nvlist_alloc(&newspa->spa_config_splitting,
|
|
NV_UNIQUE_NAME, KM_SLEEP) == 0);
|
|
VERIFY(nvlist_add_uint64(newspa->spa_config_splitting,
|
|
ZPOOL_CONFIG_SPLIT_GUID, spa_guid(spa)) == 0);
|
|
spa_config_set(newspa, spa_config_generate(newspa, NULL, -1ULL,
|
|
B_TRUE));
|
|
}
|
|
|
|
/* set the props */
|
|
if (props != NULL) {
|
|
spa_configfile_set(newspa, props, B_FALSE);
|
|
error = spa_prop_set(newspa, props);
|
|
if (error)
|
|
goto out;
|
|
}
|
|
|
|
/* flush everything */
|
|
txg = spa_vdev_config_enter(newspa);
|
|
vdev_config_dirty(newspa->spa_root_vdev);
|
|
(void) spa_vdev_config_exit(newspa, NULL, txg, 0, FTAG);
|
|
|
|
if (zio_injection_enabled)
|
|
zio_handle_panic_injection(spa, FTAG, 2);
|
|
|
|
spa_async_resume(newspa);
|
|
|
|
/* finally, update the original pool's config */
|
|
txg = spa_vdev_config_enter(spa);
|
|
tx = dmu_tx_create_dd(spa_get_dsl(spa)->dp_mos_dir);
|
|
error = dmu_tx_assign(tx, TXG_WAIT);
|
|
if (error != 0)
|
|
dmu_tx_abort(tx);
|
|
for (c = 0; c < children; c++) {
|
|
if (vml[c] != NULL && vml[c]->vdev_ops != &vdev_indirect_ops) {
|
|
vdev_t *tvd = vml[c]->vdev_top;
|
|
|
|
/*
|
|
* Need to be sure the detachable VDEV is not
|
|
* on any *other* txg's DTL list to prevent it
|
|
* from being accessed after it's freed.
|
|
*/
|
|
for (int t = 0; t < TXG_SIZE; t++) {
|
|
(void) txg_list_remove_this(
|
|
&tvd->vdev_dtl_list, vml[c], t);
|
|
}
|
|
|
|
vdev_split(vml[c]);
|
|
if (error == 0)
|
|
spa_history_log_internal(spa, "detach", tx,
|
|
"vdev=%s", vml[c]->vdev_path);
|
|
|
|
vdev_free(vml[c]);
|
|
}
|
|
}
|
|
spa->spa_avz_action = AVZ_ACTION_REBUILD;
|
|
vdev_config_dirty(spa->spa_root_vdev);
|
|
spa->spa_config_splitting = NULL;
|
|
nvlist_free(nvl);
|
|
if (error == 0)
|
|
dmu_tx_commit(tx);
|
|
(void) spa_vdev_exit(spa, NULL, txg, 0);
|
|
|
|
if (zio_injection_enabled)
|
|
zio_handle_panic_injection(spa, FTAG, 3);
|
|
|
|
/* split is complete; log a history record */
|
|
spa_history_log_internal(newspa, "split", NULL,
|
|
"from pool %s", spa_name(spa));
|
|
|
|
newspa->spa_is_splitting = B_FALSE;
|
|
kmem_free(vml, children * sizeof (vdev_t *));
|
|
|
|
/* if we're not going to mount the filesystems in userland, export */
|
|
if (exp)
|
|
error = spa_export_common(newname, POOL_STATE_EXPORTED, NULL,
|
|
B_FALSE, B_FALSE);
|
|
|
|
return (error);
|
|
|
|
out:
|
|
spa_unload(newspa);
|
|
spa_deactivate(newspa);
|
|
spa_remove(newspa);
|
|
|
|
txg = spa_vdev_config_enter(spa);
|
|
|
|
/* re-online all offlined disks */
|
|
for (c = 0; c < children; c++) {
|
|
if (vml[c] != NULL)
|
|
vml[c]->vdev_offline = B_FALSE;
|
|
}
|
|
|
|
/* restart initializing or trimming disks as necessary */
|
|
spa_async_request(spa, SPA_ASYNC_INITIALIZE_RESTART);
|
|
spa_async_request(spa, SPA_ASYNC_TRIM_RESTART);
|
|
spa_async_request(spa, SPA_ASYNC_AUTOTRIM_RESTART);
|
|
|
|
vdev_reopen(spa->spa_root_vdev);
|
|
|
|
nvlist_free(spa->spa_config_splitting);
|
|
spa->spa_config_splitting = NULL;
|
|
(void) spa_vdev_exit(spa, NULL, txg, error);
|
|
|
|
kmem_free(vml, children * sizeof (vdev_t *));
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Find any device that's done replacing, or a vdev marked 'unspare' that's
|
|
* currently spared, so we can detach it.
|
|
*/
|
|
static vdev_t *
|
|
spa_vdev_resilver_done_hunt(vdev_t *vd)
|
|
{
|
|
vdev_t *newvd, *oldvd;
|
|
|
|
for (int c = 0; c < vd->vdev_children; c++) {
|
|
oldvd = spa_vdev_resilver_done_hunt(vd->vdev_child[c]);
|
|
if (oldvd != NULL)
|
|
return (oldvd);
|
|
}
|
|
|
|
/*
|
|
* Check for a completed replacement. We always consider the first
|
|
* vdev in the list to be the oldest vdev, and the last one to be
|
|
* the newest (see spa_vdev_attach() for how that works). In
|
|
* the case where the newest vdev is faulted, we will not automatically
|
|
* remove it after a resilver completes. This is OK as it will require
|
|
* user intervention to determine which disk the admin wishes to keep.
|
|
*/
|
|
if (vd->vdev_ops == &vdev_replacing_ops) {
|
|
ASSERT(vd->vdev_children > 1);
|
|
|
|
newvd = vd->vdev_child[vd->vdev_children - 1];
|
|
oldvd = vd->vdev_child[0];
|
|
|
|
if (vdev_dtl_empty(newvd, DTL_MISSING) &&
|
|
vdev_dtl_empty(newvd, DTL_OUTAGE) &&
|
|
!vdev_dtl_required(oldvd))
|
|
return (oldvd);
|
|
}
|
|
|
|
/*
|
|
* Check for a completed resilver with the 'unspare' flag set.
|
|
* Also potentially update faulted state.
|
|
*/
|
|
if (vd->vdev_ops == &vdev_spare_ops) {
|
|
vdev_t *first = vd->vdev_child[0];
|
|
vdev_t *last = vd->vdev_child[vd->vdev_children - 1];
|
|
|
|
if (last->vdev_unspare) {
|
|
oldvd = first;
|
|
newvd = last;
|
|
} else if (first->vdev_unspare) {
|
|
oldvd = last;
|
|
newvd = first;
|
|
} else {
|
|
oldvd = NULL;
|
|
}
|
|
|
|
if (oldvd != NULL &&
|
|
vdev_dtl_empty(newvd, DTL_MISSING) &&
|
|
vdev_dtl_empty(newvd, DTL_OUTAGE) &&
|
|
!vdev_dtl_required(oldvd))
|
|
return (oldvd);
|
|
|
|
vdev_propagate_state(vd);
|
|
|
|
/*
|
|
* If there are more than two spares attached to a disk,
|
|
* and those spares are not required, then we want to
|
|
* attempt to free them up now so that they can be used
|
|
* by other pools. Once we're back down to a single
|
|
* disk+spare, we stop removing them.
|
|
*/
|
|
if (vd->vdev_children > 2) {
|
|
newvd = vd->vdev_child[1];
|
|
|
|
if (newvd->vdev_isspare && last->vdev_isspare &&
|
|
vdev_dtl_empty(last, DTL_MISSING) &&
|
|
vdev_dtl_empty(last, DTL_OUTAGE) &&
|
|
!vdev_dtl_required(newvd))
|
|
return (newvd);
|
|
}
|
|
}
|
|
|
|
return (NULL);
|
|
}
|
|
|
|
static void
|
|
spa_vdev_resilver_done(spa_t *spa)
|
|
{
|
|
vdev_t *vd, *pvd, *ppvd;
|
|
uint64_t guid, sguid, pguid, ppguid;
|
|
|
|
spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER);
|
|
|
|
while ((vd = spa_vdev_resilver_done_hunt(spa->spa_root_vdev)) != NULL) {
|
|
pvd = vd->vdev_parent;
|
|
ppvd = pvd->vdev_parent;
|
|
guid = vd->vdev_guid;
|
|
pguid = pvd->vdev_guid;
|
|
ppguid = ppvd->vdev_guid;
|
|
sguid = 0;
|
|
/*
|
|
* If we have just finished replacing a hot spared device, then
|
|
* we need to detach the parent's first child (the original hot
|
|
* spare) as well.
|
|
*/
|
|
if (ppvd->vdev_ops == &vdev_spare_ops && pvd->vdev_id == 0 &&
|
|
ppvd->vdev_children == 2) {
|
|
ASSERT(pvd->vdev_ops == &vdev_replacing_ops);
|
|
sguid = ppvd->vdev_child[1]->vdev_guid;
|
|
}
|
|
ASSERT(vd->vdev_resilver_txg == 0 || !vdev_dtl_required(vd));
|
|
|
|
spa_config_exit(spa, SCL_ALL, FTAG);
|
|
if (spa_vdev_detach(spa, guid, pguid, B_TRUE) != 0)
|
|
return;
|
|
if (sguid && spa_vdev_detach(spa, sguid, ppguid, B_TRUE) != 0)
|
|
return;
|
|
spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER);
|
|
}
|
|
|
|
spa_config_exit(spa, SCL_ALL, FTAG);
|
|
|
|
/*
|
|
* If a detach was not performed above replace waiters will not have
|
|
* been notified. In which case we must do so now.
|
|
*/
|
|
spa_notify_waiters(spa);
|
|
}
|
|
|
|
/*
|
|
* Update the stored path or FRU for this vdev.
|
|
*/
|
|
static int
|
|
spa_vdev_set_common(spa_t *spa, uint64_t guid, const char *value,
|
|
boolean_t ispath)
|
|
{
|
|
vdev_t *vd;
|
|
boolean_t sync = B_FALSE;
|
|
|
|
ASSERT(spa_writeable(spa));
|
|
|
|
spa_vdev_state_enter(spa, SCL_ALL);
|
|
|
|
if ((vd = spa_lookup_by_guid(spa, guid, B_TRUE)) == NULL)
|
|
return (spa_vdev_state_exit(spa, NULL, ENOENT));
|
|
|
|
if (!vd->vdev_ops->vdev_op_leaf)
|
|
return (spa_vdev_state_exit(spa, NULL, ENOTSUP));
|
|
|
|
if (ispath) {
|
|
if (strcmp(value, vd->vdev_path) != 0) {
|
|
spa_strfree(vd->vdev_path);
|
|
vd->vdev_path = spa_strdup(value);
|
|
sync = B_TRUE;
|
|
}
|
|
} else {
|
|
if (vd->vdev_fru == NULL) {
|
|
vd->vdev_fru = spa_strdup(value);
|
|
sync = B_TRUE;
|
|
} else if (strcmp(value, vd->vdev_fru) != 0) {
|
|
spa_strfree(vd->vdev_fru);
|
|
vd->vdev_fru = spa_strdup(value);
|
|
sync = B_TRUE;
|
|
}
|
|
}
|
|
|
|
return (spa_vdev_state_exit(spa, sync ? vd : NULL, 0));
|
|
}
|
|
|
|
int
|
|
spa_vdev_setpath(spa_t *spa, uint64_t guid, const char *newpath)
|
|
{
|
|
return (spa_vdev_set_common(spa, guid, newpath, B_TRUE));
|
|
}
|
|
|
|
int
|
|
spa_vdev_setfru(spa_t *spa, uint64_t guid, const char *newfru)
|
|
{
|
|
return (spa_vdev_set_common(spa, guid, newfru, B_FALSE));
|
|
}
|
|
|
|
/*
|
|
* ==========================================================================
|
|
* SPA Scanning
|
|
* ==========================================================================
|
|
*/
|
|
int
|
|
spa_scrub_pause_resume(spa_t *spa, pool_scrub_cmd_t cmd)
|
|
{
|
|
ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == 0);
|
|
|
|
if (dsl_scan_resilvering(spa->spa_dsl_pool))
|
|
return (SET_ERROR(EBUSY));
|
|
|
|
return (dsl_scrub_set_pause_resume(spa->spa_dsl_pool, cmd));
|
|
}
|
|
|
|
int
|
|
spa_scan_stop(spa_t *spa)
|
|
{
|
|
ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == 0);
|
|
if (dsl_scan_resilvering(spa->spa_dsl_pool))
|
|
return (SET_ERROR(EBUSY));
|
|
return (dsl_scan_cancel(spa->spa_dsl_pool));
|
|
}
|
|
|
|
int
|
|
spa_scan(spa_t *spa, pool_scan_func_t func)
|
|
{
|
|
ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == 0);
|
|
|
|
if (func >= POOL_SCAN_FUNCS || func == POOL_SCAN_NONE)
|
|
return (SET_ERROR(ENOTSUP));
|
|
|
|
if (func == POOL_SCAN_RESILVER &&
|
|
!spa_feature_is_enabled(spa, SPA_FEATURE_RESILVER_DEFER))
|
|
return (SET_ERROR(ENOTSUP));
|
|
|
|
/*
|
|
* If a resilver was requested, but there is no DTL on a
|
|
* writeable leaf device, we have nothing to do.
|
|
*/
|
|
if (func == POOL_SCAN_RESILVER &&
|
|
!vdev_resilver_needed(spa->spa_root_vdev, NULL, NULL)) {
|
|
spa_async_request(spa, SPA_ASYNC_RESILVER_DONE);
|
|
return (0);
|
|
}
|
|
|
|
return (dsl_scan(spa->spa_dsl_pool, func));
|
|
}
|
|
|
|
/*
|
|
* ==========================================================================
|
|
* SPA async task processing
|
|
* ==========================================================================
|
|
*/
|
|
|
|
static void
|
|
spa_async_remove(spa_t *spa, vdev_t *vd)
|
|
{
|
|
if (vd->vdev_remove_wanted) {
|
|
vd->vdev_remove_wanted = B_FALSE;
|
|
vd->vdev_delayed_close = B_FALSE;
|
|
vdev_set_state(vd, B_FALSE, VDEV_STATE_REMOVED, VDEV_AUX_NONE);
|
|
|
|
/*
|
|
* We want to clear the stats, but we don't want to do a full
|
|
* vdev_clear() as that will cause us to throw away
|
|
* degraded/faulted state as well as attempt to reopen the
|
|
* device, all of which is a waste.
|
|
*/
|
|
vd->vdev_stat.vs_read_errors = 0;
|
|
vd->vdev_stat.vs_write_errors = 0;
|
|
vd->vdev_stat.vs_checksum_errors = 0;
|
|
|
|
vdev_state_dirty(vd->vdev_top);
|
|
|
|
/* Tell userspace that the vdev is gone. */
|
|
zfs_post_remove(spa, vd);
|
|
}
|
|
|
|
for (int c = 0; c < vd->vdev_children; c++)
|
|
spa_async_remove(spa, vd->vdev_child[c]);
|
|
}
|
|
|
|
static void
|
|
spa_async_probe(spa_t *spa, vdev_t *vd)
|
|
{
|
|
if (vd->vdev_probe_wanted) {
|
|
vd->vdev_probe_wanted = B_FALSE;
|
|
vdev_reopen(vd); /* vdev_open() does the actual probe */
|
|
}
|
|
|
|
for (int c = 0; c < vd->vdev_children; c++)
|
|
spa_async_probe(spa, vd->vdev_child[c]);
|
|
}
|
|
|
|
static void
|
|
spa_async_autoexpand(spa_t *spa, vdev_t *vd)
|
|
{
|
|
if (!spa->spa_autoexpand)
|
|
return;
|
|
|
|
for (int c = 0; c < vd->vdev_children; c++) {
|
|
vdev_t *cvd = vd->vdev_child[c];
|
|
spa_async_autoexpand(spa, cvd);
|
|
}
|
|
|
|
if (!vd->vdev_ops->vdev_op_leaf || vd->vdev_physpath == NULL)
|
|
return;
|
|
|
|
spa_event_notify(vd->vdev_spa, vd, NULL, ESC_ZFS_VDEV_AUTOEXPAND);
|
|
}
|
|
|
|
static void
|
|
spa_async_thread(void *arg)
|
|
{
|
|
spa_t *spa = (spa_t *)arg;
|
|
dsl_pool_t *dp = spa->spa_dsl_pool;
|
|
int tasks;
|
|
|
|
ASSERT(spa->spa_sync_on);
|
|
|
|
mutex_enter(&spa->spa_async_lock);
|
|
tasks = spa->spa_async_tasks;
|
|
spa->spa_async_tasks = 0;
|
|
mutex_exit(&spa->spa_async_lock);
|
|
|
|
/*
|
|
* See if the config needs to be updated.
|
|
*/
|
|
if (tasks & SPA_ASYNC_CONFIG_UPDATE) {
|
|
uint64_t old_space, new_space;
|
|
|
|
mutex_enter(&spa_namespace_lock);
|
|
old_space = metaslab_class_get_space(spa_normal_class(spa));
|
|
old_space += metaslab_class_get_space(spa_special_class(spa));
|
|
old_space += metaslab_class_get_space(spa_dedup_class(spa));
|
|
old_space += metaslab_class_get_space(
|
|
spa_embedded_log_class(spa));
|
|
|
|
spa_config_update(spa, SPA_CONFIG_UPDATE_POOL);
|
|
|
|
new_space = metaslab_class_get_space(spa_normal_class(spa));
|
|
new_space += metaslab_class_get_space(spa_special_class(spa));
|
|
new_space += metaslab_class_get_space(spa_dedup_class(spa));
|
|
new_space += metaslab_class_get_space(
|
|
spa_embedded_log_class(spa));
|
|
mutex_exit(&spa_namespace_lock);
|
|
|
|
/*
|
|
* If the pool grew as a result of the config update,
|
|
* then log an internal history event.
|
|
*/
|
|
if (new_space != old_space) {
|
|
spa_history_log_internal(spa, "vdev online", NULL,
|
|
"pool '%s' size: %llu(+%llu)",
|
|
spa_name(spa), (u_longlong_t)new_space,
|
|
(u_longlong_t)(new_space - old_space));
|
|
}
|
|
}
|
|
|
|
/*
|
|
* See if any devices need to be marked REMOVED.
|
|
*/
|
|
if (tasks & SPA_ASYNC_REMOVE) {
|
|
spa_vdev_state_enter(spa, SCL_NONE);
|
|
spa_async_remove(spa, spa->spa_root_vdev);
|
|
for (int i = 0; i < spa->spa_l2cache.sav_count; i++)
|
|
spa_async_remove(spa, spa->spa_l2cache.sav_vdevs[i]);
|
|
for (int i = 0; i < spa->spa_spares.sav_count; i++)
|
|
spa_async_remove(spa, spa->spa_spares.sav_vdevs[i]);
|
|
(void) spa_vdev_state_exit(spa, NULL, 0);
|
|
}
|
|
|
|
if ((tasks & SPA_ASYNC_AUTOEXPAND) && !spa_suspended(spa)) {
|
|
spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
|
|
spa_async_autoexpand(spa, spa->spa_root_vdev);
|
|
spa_config_exit(spa, SCL_CONFIG, FTAG);
|
|
}
|
|
|
|
/*
|
|
* See if any devices need to be probed.
|
|
*/
|
|
if (tasks & SPA_ASYNC_PROBE) {
|
|
spa_vdev_state_enter(spa, SCL_NONE);
|
|
spa_async_probe(spa, spa->spa_root_vdev);
|
|
(void) spa_vdev_state_exit(spa, NULL, 0);
|
|
}
|
|
|
|
/*
|
|
* If any devices are done replacing, detach them.
|
|
*/
|
|
if (tasks & SPA_ASYNC_RESILVER_DONE ||
|
|
tasks & SPA_ASYNC_REBUILD_DONE) {
|
|
spa_vdev_resilver_done(spa);
|
|
}
|
|
|
|
/*
|
|
* Kick off a resilver.
|
|
*/
|
|
if (tasks & SPA_ASYNC_RESILVER &&
|
|
!vdev_rebuild_active(spa->spa_root_vdev) &&
|
|
(!dsl_scan_resilvering(dp) ||
|
|
!spa_feature_is_enabled(dp->dp_spa, SPA_FEATURE_RESILVER_DEFER)))
|
|
dsl_scan_restart_resilver(dp, 0);
|
|
|
|
if (tasks & SPA_ASYNC_INITIALIZE_RESTART) {
|
|
mutex_enter(&spa_namespace_lock);
|
|
spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
|
|
vdev_initialize_restart(spa->spa_root_vdev);
|
|
spa_config_exit(spa, SCL_CONFIG, FTAG);
|
|
mutex_exit(&spa_namespace_lock);
|
|
}
|
|
|
|
if (tasks & SPA_ASYNC_TRIM_RESTART) {
|
|
mutex_enter(&spa_namespace_lock);
|
|
spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
|
|
vdev_trim_restart(spa->spa_root_vdev);
|
|
spa_config_exit(spa, SCL_CONFIG, FTAG);
|
|
mutex_exit(&spa_namespace_lock);
|
|
}
|
|
|
|
if (tasks & SPA_ASYNC_AUTOTRIM_RESTART) {
|
|
mutex_enter(&spa_namespace_lock);
|
|
spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
|
|
vdev_autotrim_restart(spa);
|
|
spa_config_exit(spa, SCL_CONFIG, FTAG);
|
|
mutex_exit(&spa_namespace_lock);
|
|
}
|
|
|
|
/*
|
|
* Kick off L2 cache whole device TRIM.
|
|
*/
|
|
if (tasks & SPA_ASYNC_L2CACHE_TRIM) {
|
|
mutex_enter(&spa_namespace_lock);
|
|
spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
|
|
vdev_trim_l2arc(spa);
|
|
spa_config_exit(spa, SCL_CONFIG, FTAG);
|
|
mutex_exit(&spa_namespace_lock);
|
|
}
|
|
|
|
/*
|
|
* Kick off L2 cache rebuilding.
|
|
*/
|
|
if (tasks & SPA_ASYNC_L2CACHE_REBUILD) {
|
|
mutex_enter(&spa_namespace_lock);
|
|
spa_config_enter(spa, SCL_L2ARC, FTAG, RW_READER);
|
|
l2arc_spa_rebuild_start(spa);
|
|
spa_config_exit(spa, SCL_L2ARC, FTAG);
|
|
mutex_exit(&spa_namespace_lock);
|
|
}
|
|
|
|
/*
|
|
* Let the world know that we're done.
|
|
*/
|
|
mutex_enter(&spa->spa_async_lock);
|
|
spa->spa_async_thread = NULL;
|
|
cv_broadcast(&spa->spa_async_cv);
|
|
mutex_exit(&spa->spa_async_lock);
|
|
thread_exit();
|
|
}
|
|
|
|
void
|
|
spa_async_suspend(spa_t *spa)
|
|
{
|
|
mutex_enter(&spa->spa_async_lock);
|
|
spa->spa_async_suspended++;
|
|
while (spa->spa_async_thread != NULL)
|
|
cv_wait(&spa->spa_async_cv, &spa->spa_async_lock);
|
|
mutex_exit(&spa->spa_async_lock);
|
|
|
|
spa_vdev_remove_suspend(spa);
|
|
|
|
zthr_t *condense_thread = spa->spa_condense_zthr;
|
|
if (condense_thread != NULL)
|
|
zthr_cancel(condense_thread);
|
|
|
|
zthr_t *discard_thread = spa->spa_checkpoint_discard_zthr;
|
|
if (discard_thread != NULL)
|
|
zthr_cancel(discard_thread);
|
|
|
|
zthr_t *ll_delete_thread = spa->spa_livelist_delete_zthr;
|
|
if (ll_delete_thread != NULL)
|
|
zthr_cancel(ll_delete_thread);
|
|
|
|
zthr_t *ll_condense_thread = spa->spa_livelist_condense_zthr;
|
|
if (ll_condense_thread != NULL)
|
|
zthr_cancel(ll_condense_thread);
|
|
}
|
|
|
|
void
|
|
spa_async_resume(spa_t *spa)
|
|
{
|
|
mutex_enter(&spa->spa_async_lock);
|
|
ASSERT(spa->spa_async_suspended != 0);
|
|
spa->spa_async_suspended--;
|
|
mutex_exit(&spa->spa_async_lock);
|
|
spa_restart_removal(spa);
|
|
|
|
zthr_t *condense_thread = spa->spa_condense_zthr;
|
|
if (condense_thread != NULL)
|
|
zthr_resume(condense_thread);
|
|
|
|
zthr_t *discard_thread = spa->spa_checkpoint_discard_zthr;
|
|
if (discard_thread != NULL)
|
|
zthr_resume(discard_thread);
|
|
|
|
zthr_t *ll_delete_thread = spa->spa_livelist_delete_zthr;
|
|
if (ll_delete_thread != NULL)
|
|
zthr_resume(ll_delete_thread);
|
|
|
|
zthr_t *ll_condense_thread = spa->spa_livelist_condense_zthr;
|
|
if (ll_condense_thread != NULL)
|
|
zthr_resume(ll_condense_thread);
|
|
}
|
|
|
|
static boolean_t
|
|
spa_async_tasks_pending(spa_t *spa)
|
|
{
|
|
uint_t non_config_tasks;
|
|
uint_t config_task;
|
|
boolean_t config_task_suspended;
|
|
|
|
non_config_tasks = spa->spa_async_tasks & ~SPA_ASYNC_CONFIG_UPDATE;
|
|
config_task = spa->spa_async_tasks & SPA_ASYNC_CONFIG_UPDATE;
|
|
if (spa->spa_ccw_fail_time == 0) {
|
|
config_task_suspended = B_FALSE;
|
|
} else {
|
|
config_task_suspended =
|
|
(gethrtime() - spa->spa_ccw_fail_time) <
|
|
((hrtime_t)zfs_ccw_retry_interval * NANOSEC);
|
|
}
|
|
|
|
return (non_config_tasks || (config_task && !config_task_suspended));
|
|
}
|
|
|
|
static void
|
|
spa_async_dispatch(spa_t *spa)
|
|
{
|
|
mutex_enter(&spa->spa_async_lock);
|
|
if (spa_async_tasks_pending(spa) &&
|
|
!spa->spa_async_suspended &&
|
|
spa->spa_async_thread == NULL)
|
|
spa->spa_async_thread = thread_create(NULL, 0,
|
|
spa_async_thread, spa, 0, &p0, TS_RUN, maxclsyspri);
|
|
mutex_exit(&spa->spa_async_lock);
|
|
}
|
|
|
|
void
|
|
spa_async_request(spa_t *spa, int task)
|
|
{
|
|
zfs_dbgmsg("spa=%s async request task=%u", spa->spa_name, task);
|
|
mutex_enter(&spa->spa_async_lock);
|
|
spa->spa_async_tasks |= task;
|
|
mutex_exit(&spa->spa_async_lock);
|
|
}
|
|
|
|
int
|
|
spa_async_tasks(spa_t *spa)
|
|
{
|
|
return (spa->spa_async_tasks);
|
|
}
|
|
|
|
/*
|
|
* ==========================================================================
|
|
* SPA syncing routines
|
|
* ==========================================================================
|
|
*/
|
|
|
|
|
|
static int
|
|
bpobj_enqueue_cb(void *arg, const blkptr_t *bp, boolean_t bp_freed,
|
|
dmu_tx_t *tx)
|
|
{
|
|
bpobj_t *bpo = arg;
|
|
bpobj_enqueue(bpo, bp, bp_freed, tx);
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
bpobj_enqueue_alloc_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
|
|
{
|
|
return (bpobj_enqueue_cb(arg, bp, B_FALSE, tx));
|
|
}
|
|
|
|
int
|
|
bpobj_enqueue_free_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
|
|
{
|
|
return (bpobj_enqueue_cb(arg, bp, B_TRUE, tx));
|
|
}
|
|
|
|
static int
|
|
spa_free_sync_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
|
|
{
|
|
zio_t *pio = arg;
|
|
|
|
zio_nowait(zio_free_sync(pio, pio->io_spa, dmu_tx_get_txg(tx), bp,
|
|
pio->io_flags));
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
bpobj_spa_free_sync_cb(void *arg, const blkptr_t *bp, boolean_t bp_freed,
|
|
dmu_tx_t *tx)
|
|
{
|
|
ASSERT(!bp_freed);
|
|
return (spa_free_sync_cb(arg, bp, tx));
|
|
}
|
|
|
|
/*
|
|
* Note: this simple function is not inlined to make it easier to dtrace the
|
|
* amount of time spent syncing frees.
|
|
*/
|
|
static void
|
|
spa_sync_frees(spa_t *spa, bplist_t *bpl, dmu_tx_t *tx)
|
|
{
|
|
zio_t *zio = zio_root(spa, NULL, NULL, 0);
|
|
bplist_iterate(bpl, spa_free_sync_cb, zio, tx);
|
|
VERIFY(zio_wait(zio) == 0);
|
|
}
|
|
|
|
/*
|
|
* Note: this simple function is not inlined to make it easier to dtrace the
|
|
* amount of time spent syncing deferred frees.
|
|
*/
|
|
static void
|
|
spa_sync_deferred_frees(spa_t *spa, dmu_tx_t *tx)
|
|
{
|
|
if (spa_sync_pass(spa) != 1)
|
|
return;
|
|
|
|
/*
|
|
* Note:
|
|
* If the log space map feature is active, we stop deferring
|
|
* frees to the next TXG and therefore running this function
|
|
* would be considered a no-op as spa_deferred_bpobj should
|
|
* not have any entries.
|
|
*
|
|
* That said we run this function anyway (instead of returning
|
|
* immediately) for the edge-case scenario where we just
|
|
* activated the log space map feature in this TXG but we have
|
|
* deferred frees from the previous TXG.
|
|
*/
|
|
zio_t *zio = zio_root(spa, NULL, NULL, 0);
|
|
VERIFY3U(bpobj_iterate(&spa->spa_deferred_bpobj,
|
|
bpobj_spa_free_sync_cb, zio, tx), ==, 0);
|
|
VERIFY0(zio_wait(zio));
|
|
}
|
|
|
|
static void
|
|
spa_sync_nvlist(spa_t *spa, uint64_t obj, nvlist_t *nv, dmu_tx_t *tx)
|
|
{
|
|
char *packed = NULL;
|
|
size_t bufsize;
|
|
size_t nvsize = 0;
|
|
dmu_buf_t *db;
|
|
|
|
VERIFY(nvlist_size(nv, &nvsize, NV_ENCODE_XDR) == 0);
|
|
|
|
/*
|
|
* Write full (SPA_CONFIG_BLOCKSIZE) blocks of configuration
|
|
* information. This avoids the dmu_buf_will_dirty() path and
|
|
* saves us a pre-read to get data we don't actually care about.
|
|
*/
|
|
bufsize = P2ROUNDUP((uint64_t)nvsize, SPA_CONFIG_BLOCKSIZE);
|
|
packed = vmem_alloc(bufsize, KM_SLEEP);
|
|
|
|
VERIFY(nvlist_pack(nv, &packed, &nvsize, NV_ENCODE_XDR,
|
|
KM_SLEEP) == 0);
|
|
bzero(packed + nvsize, bufsize - nvsize);
|
|
|
|
dmu_write(spa->spa_meta_objset, obj, 0, bufsize, packed, tx);
|
|
|
|
vmem_free(packed, bufsize);
|
|
|
|
VERIFY(0 == dmu_bonus_hold(spa->spa_meta_objset, obj, FTAG, &db));
|
|
dmu_buf_will_dirty(db, tx);
|
|
*(uint64_t *)db->db_data = nvsize;
|
|
dmu_buf_rele(db, FTAG);
|
|
}
|
|
|
|
static void
|
|
spa_sync_aux_dev(spa_t *spa, spa_aux_vdev_t *sav, dmu_tx_t *tx,
|
|
const char *config, const char *entry)
|
|
{
|
|
nvlist_t *nvroot;
|
|
nvlist_t **list;
|
|
int i;
|
|
|
|
if (!sav->sav_sync)
|
|
return;
|
|
|
|
/*
|
|
* Update the MOS nvlist describing the list of available devices.
|
|
* spa_validate_aux() will have already made sure this nvlist is
|
|
* valid and the vdevs are labeled appropriately.
|
|
*/
|
|
if (sav->sav_object == 0) {
|
|
sav->sav_object = dmu_object_alloc(spa->spa_meta_objset,
|
|
DMU_OT_PACKED_NVLIST, 1 << 14, DMU_OT_PACKED_NVLIST_SIZE,
|
|
sizeof (uint64_t), tx);
|
|
VERIFY(zap_update(spa->spa_meta_objset,
|
|
DMU_POOL_DIRECTORY_OBJECT, entry, sizeof (uint64_t), 1,
|
|
&sav->sav_object, tx) == 0);
|
|
}
|
|
|
|
VERIFY(nvlist_alloc(&nvroot, NV_UNIQUE_NAME, KM_SLEEP) == 0);
|
|
if (sav->sav_count == 0) {
|
|
VERIFY(nvlist_add_nvlist_array(nvroot, config, NULL, 0) == 0);
|
|
} else {
|
|
list = kmem_alloc(sav->sav_count*sizeof (void *), KM_SLEEP);
|
|
for (i = 0; i < sav->sav_count; i++)
|
|
list[i] = vdev_config_generate(spa, sav->sav_vdevs[i],
|
|
B_FALSE, VDEV_CONFIG_L2CACHE);
|
|
VERIFY(nvlist_add_nvlist_array(nvroot, config, list,
|
|
sav->sav_count) == 0);
|
|
for (i = 0; i < sav->sav_count; i++)
|
|
nvlist_free(list[i]);
|
|
kmem_free(list, sav->sav_count * sizeof (void *));
|
|
}
|
|
|
|
spa_sync_nvlist(spa, sav->sav_object, nvroot, tx);
|
|
nvlist_free(nvroot);
|
|
|
|
sav->sav_sync = B_FALSE;
|
|
}
|
|
|
|
/*
|
|
* Rebuild spa's all-vdev ZAP from the vdev ZAPs indicated in each vdev_t.
|
|
* The all-vdev ZAP must be empty.
|
|
*/
|
|
static void
|
|
spa_avz_build(vdev_t *vd, uint64_t avz, dmu_tx_t *tx)
|
|
{
|
|
spa_t *spa = vd->vdev_spa;
|
|
|
|
if (vd->vdev_top_zap != 0) {
|
|
VERIFY0(zap_add_int(spa->spa_meta_objset, avz,
|
|
vd->vdev_top_zap, tx));
|
|
}
|
|
if (vd->vdev_leaf_zap != 0) {
|
|
VERIFY0(zap_add_int(spa->spa_meta_objset, avz,
|
|
vd->vdev_leaf_zap, tx));
|
|
}
|
|
for (uint64_t i = 0; i < vd->vdev_children; i++) {
|
|
spa_avz_build(vd->vdev_child[i], avz, tx);
|
|
}
|
|
}
|
|
|
|
static void
|
|
spa_sync_config_object(spa_t *spa, dmu_tx_t *tx)
|
|
{
|
|
nvlist_t *config;
|
|
|
|
/*
|
|
* If the pool is being imported from a pre-per-vdev-ZAP version of ZFS,
|
|
* its config may not be dirty but we still need to build per-vdev ZAPs.
|
|
* Similarly, if the pool is being assembled (e.g. after a split), we
|
|
* need to rebuild the AVZ although the config may not be dirty.
|
|
*/
|
|
if (list_is_empty(&spa->spa_config_dirty_list) &&
|
|
spa->spa_avz_action == AVZ_ACTION_NONE)
|
|
return;
|
|
|
|
spa_config_enter(spa, SCL_STATE, FTAG, RW_READER);
|
|
|
|
ASSERT(spa->spa_avz_action == AVZ_ACTION_NONE ||
|
|
spa->spa_avz_action == AVZ_ACTION_INITIALIZE ||
|
|
spa->spa_all_vdev_zaps != 0);
|
|
|
|
if (spa->spa_avz_action == AVZ_ACTION_REBUILD) {
|
|
/* Make and build the new AVZ */
|
|
uint64_t new_avz = zap_create(spa->spa_meta_objset,
|
|
DMU_OTN_ZAP_METADATA, DMU_OT_NONE, 0, tx);
|
|
spa_avz_build(spa->spa_root_vdev, new_avz, tx);
|
|
|
|
/* Diff old AVZ with new one */
|
|
zap_cursor_t zc;
|
|
zap_attribute_t za;
|
|
|
|
for (zap_cursor_init(&zc, spa->spa_meta_objset,
|
|
spa->spa_all_vdev_zaps);
|
|
zap_cursor_retrieve(&zc, &za) == 0;
|
|
zap_cursor_advance(&zc)) {
|
|
uint64_t vdzap = za.za_first_integer;
|
|
if (zap_lookup_int(spa->spa_meta_objset, new_avz,
|
|
vdzap) == ENOENT) {
|
|
/*
|
|
* ZAP is listed in old AVZ but not in new one;
|
|
* destroy it
|
|
*/
|
|
VERIFY0(zap_destroy(spa->spa_meta_objset, vdzap,
|
|
tx));
|
|
}
|
|
}
|
|
|
|
zap_cursor_fini(&zc);
|
|
|
|
/* Destroy the old AVZ */
|
|
VERIFY0(zap_destroy(spa->spa_meta_objset,
|
|
spa->spa_all_vdev_zaps, tx));
|
|
|
|
/* Replace the old AVZ in the dir obj with the new one */
|
|
VERIFY0(zap_update(spa->spa_meta_objset,
|
|
DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_VDEV_ZAP_MAP,
|
|
sizeof (new_avz), 1, &new_avz, tx));
|
|
|
|
spa->spa_all_vdev_zaps = new_avz;
|
|
} else if (spa->spa_avz_action == AVZ_ACTION_DESTROY) {
|
|
zap_cursor_t zc;
|
|
zap_attribute_t za;
|
|
|
|
/* Walk through the AVZ and destroy all listed ZAPs */
|
|
for (zap_cursor_init(&zc, spa->spa_meta_objset,
|
|
spa->spa_all_vdev_zaps);
|
|
zap_cursor_retrieve(&zc, &za) == 0;
|
|
zap_cursor_advance(&zc)) {
|
|
uint64_t zap = za.za_first_integer;
|
|
VERIFY0(zap_destroy(spa->spa_meta_objset, zap, tx));
|
|
}
|
|
|
|
zap_cursor_fini(&zc);
|
|
|
|
/* Destroy and unlink the AVZ itself */
|
|
VERIFY0(zap_destroy(spa->spa_meta_objset,
|
|
spa->spa_all_vdev_zaps, tx));
|
|
VERIFY0(zap_remove(spa->spa_meta_objset,
|
|
DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_VDEV_ZAP_MAP, tx));
|
|
spa->spa_all_vdev_zaps = 0;
|
|
}
|
|
|
|
if (spa->spa_all_vdev_zaps == 0) {
|
|
spa->spa_all_vdev_zaps = zap_create_link(spa->spa_meta_objset,
|
|
DMU_OTN_ZAP_METADATA, DMU_POOL_DIRECTORY_OBJECT,
|
|
DMU_POOL_VDEV_ZAP_MAP, tx);
|
|
}
|
|
spa->spa_avz_action = AVZ_ACTION_NONE;
|
|
|
|
/* Create ZAPs for vdevs that don't have them. */
|
|
vdev_construct_zaps(spa->spa_root_vdev, tx);
|
|
|
|
config = spa_config_generate(spa, spa->spa_root_vdev,
|
|
dmu_tx_get_txg(tx), B_FALSE);
|
|
|
|
/*
|
|
* If we're upgrading the spa version then make sure that
|
|
* the config object gets updated with the correct version.
|
|
*/
|
|
if (spa->spa_ubsync.ub_version < spa->spa_uberblock.ub_version)
|
|
fnvlist_add_uint64(config, ZPOOL_CONFIG_VERSION,
|
|
spa->spa_uberblock.ub_version);
|
|
|
|
spa_config_exit(spa, SCL_STATE, FTAG);
|
|
|
|
nvlist_free(spa->spa_config_syncing);
|
|
spa->spa_config_syncing = config;
|
|
|
|
spa_sync_nvlist(spa, spa->spa_config_object, config, tx);
|
|
}
|
|
|
|
static void
|
|
spa_sync_version(void *arg, dmu_tx_t *tx)
|
|
{
|
|
uint64_t *versionp = arg;
|
|
uint64_t version = *versionp;
|
|
spa_t *spa = dmu_tx_pool(tx)->dp_spa;
|
|
|
|
/*
|
|
* Setting the version is special cased when first creating the pool.
|
|
*/
|
|
ASSERT(tx->tx_txg != TXG_INITIAL);
|
|
|
|
ASSERT(SPA_VERSION_IS_SUPPORTED(version));
|
|
ASSERT(version >= spa_version(spa));
|
|
|
|
spa->spa_uberblock.ub_version = version;
|
|
vdev_config_dirty(spa->spa_root_vdev);
|
|
spa_history_log_internal(spa, "set", tx, "version=%lld",
|
|
(longlong_t)version);
|
|
}
|
|
|
|
/*
|
|
* Set zpool properties.
|
|
*/
|
|
static void
|
|
spa_sync_props(void *arg, dmu_tx_t *tx)
|
|
{
|
|
nvlist_t *nvp = arg;
|
|
spa_t *spa = dmu_tx_pool(tx)->dp_spa;
|
|
objset_t *mos = spa->spa_meta_objset;
|
|
nvpair_t *elem = NULL;
|
|
|
|
mutex_enter(&spa->spa_props_lock);
|
|
|
|
while ((elem = nvlist_next_nvpair(nvp, elem))) {
|
|
uint64_t intval;
|
|
char *strval, *fname;
|
|
zpool_prop_t prop;
|
|
const char *propname;
|
|
zprop_type_t proptype;
|
|
spa_feature_t fid;
|
|
|
|
switch (prop = zpool_name_to_prop(nvpair_name(elem))) {
|
|
case ZPOOL_PROP_INVAL:
|
|
/*
|
|
* We checked this earlier in spa_prop_validate().
|
|
*/
|
|
ASSERT(zpool_prop_feature(nvpair_name(elem)));
|
|
|
|
fname = strchr(nvpair_name(elem), '@') + 1;
|
|
VERIFY0(zfeature_lookup_name(fname, &fid));
|
|
|
|
spa_feature_enable(spa, fid, tx);
|
|
spa_history_log_internal(spa, "set", tx,
|
|
"%s=enabled", nvpair_name(elem));
|
|
break;
|
|
|
|
case ZPOOL_PROP_VERSION:
|
|
intval = fnvpair_value_uint64(elem);
|
|
/*
|
|
* The version is synced separately before other
|
|
* properties and should be correct by now.
|
|
*/
|
|
ASSERT3U(spa_version(spa), >=, intval);
|
|
break;
|
|
|
|
case ZPOOL_PROP_ALTROOT:
|
|
/*
|
|
* 'altroot' is a non-persistent property. It should
|
|
* have been set temporarily at creation or import time.
|
|
*/
|
|
ASSERT(spa->spa_root != NULL);
|
|
break;
|
|
|
|
case ZPOOL_PROP_READONLY:
|
|
case ZPOOL_PROP_CACHEFILE:
|
|
/*
|
|
* 'readonly' and 'cachefile' are also non-persistent
|
|
* properties.
|
|
*/
|
|
break;
|
|
case ZPOOL_PROP_COMMENT:
|
|
strval = fnvpair_value_string(elem);
|
|
if (spa->spa_comment != NULL)
|
|
spa_strfree(spa->spa_comment);
|
|
spa->spa_comment = spa_strdup(strval);
|
|
/*
|
|
* We need to dirty the configuration on all the vdevs
|
|
* so that their labels get updated. We also need to
|
|
* update the cache file to keep it in sync with the
|
|
* MOS version. It's unnecessary to do this for pool
|
|
* creation since the vdev's configuration has already
|
|
* been dirtied.
|
|
*/
|
|
if (tx->tx_txg != TXG_INITIAL) {
|
|
vdev_config_dirty(spa->spa_root_vdev);
|
|
spa_async_request(spa, SPA_ASYNC_CONFIG_UPDATE);
|
|
}
|
|
spa_history_log_internal(spa, "set", tx,
|
|
"%s=%s", nvpair_name(elem), strval);
|
|
break;
|
|
case ZPOOL_PROP_COMPATIBILITY:
|
|
strval = fnvpair_value_string(elem);
|
|
if (spa->spa_compatibility != NULL)
|
|
spa_strfree(spa->spa_compatibility);
|
|
spa->spa_compatibility = spa_strdup(strval);
|
|
/*
|
|
* Dirty the configuration on vdevs as above.
|
|
*/
|
|
if (tx->tx_txg != TXG_INITIAL) {
|
|
vdev_config_dirty(spa->spa_root_vdev);
|
|
spa_async_request(spa, SPA_ASYNC_CONFIG_UPDATE);
|
|
}
|
|
|
|
spa_history_log_internal(spa, "set", tx,
|
|
"%s=%s", nvpair_name(elem), strval);
|
|
break;
|
|
|
|
default:
|
|
/*
|
|
* Set pool property values in the poolprops mos object.
|
|
*/
|
|
if (spa->spa_pool_props_object == 0) {
|
|
spa->spa_pool_props_object =
|
|
zap_create_link(mos, DMU_OT_POOL_PROPS,
|
|
DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_PROPS,
|
|
tx);
|
|
}
|
|
|
|
/* normalize the property name */
|
|
propname = zpool_prop_to_name(prop);
|
|
proptype = zpool_prop_get_type(prop);
|
|
|
|
if (nvpair_type(elem) == DATA_TYPE_STRING) {
|
|
ASSERT(proptype == PROP_TYPE_STRING);
|
|
strval = fnvpair_value_string(elem);
|
|
VERIFY0(zap_update(mos,
|
|
spa->spa_pool_props_object, propname,
|
|
1, strlen(strval) + 1, strval, tx));
|
|
spa_history_log_internal(spa, "set", tx,
|
|
"%s=%s", nvpair_name(elem), strval);
|
|
} else if (nvpair_type(elem) == DATA_TYPE_UINT64) {
|
|
intval = fnvpair_value_uint64(elem);
|
|
|
|
if (proptype == PROP_TYPE_INDEX) {
|
|
const char *unused;
|
|
VERIFY0(zpool_prop_index_to_string(
|
|
prop, intval, &unused));
|
|
}
|
|
VERIFY0(zap_update(mos,
|
|
spa->spa_pool_props_object, propname,
|
|
8, 1, &intval, tx));
|
|
spa_history_log_internal(spa, "set", tx,
|
|
"%s=%lld", nvpair_name(elem),
|
|
(longlong_t)intval);
|
|
} else {
|
|
ASSERT(0); /* not allowed */
|
|
}
|
|
|
|
switch (prop) {
|
|
case ZPOOL_PROP_DELEGATION:
|
|
spa->spa_delegation = intval;
|
|
break;
|
|
case ZPOOL_PROP_BOOTFS:
|
|
spa->spa_bootfs = intval;
|
|
break;
|
|
case ZPOOL_PROP_FAILUREMODE:
|
|
spa->spa_failmode = intval;
|
|
break;
|
|
case ZPOOL_PROP_AUTOTRIM:
|
|
spa->spa_autotrim = intval;
|
|
spa_async_request(spa,
|
|
SPA_ASYNC_AUTOTRIM_RESTART);
|
|
break;
|
|
case ZPOOL_PROP_AUTOEXPAND:
|
|
spa->spa_autoexpand = intval;
|
|
if (tx->tx_txg != TXG_INITIAL)
|
|
spa_async_request(spa,
|
|
SPA_ASYNC_AUTOEXPAND);
|
|
break;
|
|
case ZPOOL_PROP_MULTIHOST:
|
|
spa->spa_multihost = intval;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
mutex_exit(&spa->spa_props_lock);
|
|
}
|
|
|
|
/*
|
|
* Perform one-time upgrade on-disk changes. spa_version() does not
|
|
* reflect the new version this txg, so there must be no changes this
|
|
* txg to anything that the upgrade code depends on after it executes.
|
|
* Therefore this must be called after dsl_pool_sync() does the sync
|
|
* tasks.
|
|
*/
|
|
static void
|
|
spa_sync_upgrades(spa_t *spa, dmu_tx_t *tx)
|
|
{
|
|
if (spa_sync_pass(spa) != 1)
|
|
return;
|
|
|
|
dsl_pool_t *dp = spa->spa_dsl_pool;
|
|
rrw_enter(&dp->dp_config_rwlock, RW_WRITER, FTAG);
|
|
|
|
if (spa->spa_ubsync.ub_version < SPA_VERSION_ORIGIN &&
|
|
spa->spa_uberblock.ub_version >= SPA_VERSION_ORIGIN) {
|
|
dsl_pool_create_origin(dp, tx);
|
|
|
|
/* Keeping the origin open increases spa_minref */
|
|
spa->spa_minref += 3;
|
|
}
|
|
|
|
if (spa->spa_ubsync.ub_version < SPA_VERSION_NEXT_CLONES &&
|
|
spa->spa_uberblock.ub_version >= SPA_VERSION_NEXT_CLONES) {
|
|
dsl_pool_upgrade_clones(dp, tx);
|
|
}
|
|
|
|
if (spa->spa_ubsync.ub_version < SPA_VERSION_DIR_CLONES &&
|
|
spa->spa_uberblock.ub_version >= SPA_VERSION_DIR_CLONES) {
|
|
dsl_pool_upgrade_dir_clones(dp, tx);
|
|
|
|
/* Keeping the freedir open increases spa_minref */
|
|
spa->spa_minref += 3;
|
|
}
|
|
|
|
if (spa->spa_ubsync.ub_version < SPA_VERSION_FEATURES &&
|
|
spa->spa_uberblock.ub_version >= SPA_VERSION_FEATURES) {
|
|
spa_feature_create_zap_objects(spa, tx);
|
|
}
|
|
|
|
/*
|
|
* LZ4_COMPRESS feature's behaviour was changed to activate_on_enable
|
|
* when possibility to use lz4 compression for metadata was added
|
|
* Old pools that have this feature enabled must be upgraded to have
|
|
* this feature active
|
|
*/
|
|
if (spa->spa_uberblock.ub_version >= SPA_VERSION_FEATURES) {
|
|
boolean_t lz4_en = spa_feature_is_enabled(spa,
|
|
SPA_FEATURE_LZ4_COMPRESS);
|
|
boolean_t lz4_ac = spa_feature_is_active(spa,
|
|
SPA_FEATURE_LZ4_COMPRESS);
|
|
|
|
if (lz4_en && !lz4_ac)
|
|
spa_feature_incr(spa, SPA_FEATURE_LZ4_COMPRESS, tx);
|
|
}
|
|
|
|
/*
|
|
* If we haven't written the salt, do so now. Note that the
|
|
* feature may not be activated yet, but that's fine since
|
|
* the presence of this ZAP entry is backwards compatible.
|
|
*/
|
|
if (zap_contains(spa->spa_meta_objset, DMU_POOL_DIRECTORY_OBJECT,
|
|
DMU_POOL_CHECKSUM_SALT) == ENOENT) {
|
|
VERIFY0(zap_add(spa->spa_meta_objset,
|
|
DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_CHECKSUM_SALT, 1,
|
|
sizeof (spa->spa_cksum_salt.zcs_bytes),
|
|
spa->spa_cksum_salt.zcs_bytes, tx));
|
|
}
|
|
|
|
rrw_exit(&dp->dp_config_rwlock, FTAG);
|
|
}
|
|
|
|
static void
|
|
vdev_indirect_state_sync_verify(vdev_t *vd)
|
|
{
|
|
vdev_indirect_mapping_t *vim __maybe_unused = vd->vdev_indirect_mapping;
|
|
vdev_indirect_births_t *vib __maybe_unused = vd->vdev_indirect_births;
|
|
|
|
if (vd->vdev_ops == &vdev_indirect_ops) {
|
|
ASSERT(vim != NULL);
|
|
ASSERT(vib != NULL);
|
|
}
|
|
|
|
uint64_t obsolete_sm_object = 0;
|
|
ASSERT0(vdev_obsolete_sm_object(vd, &obsolete_sm_object));
|
|
if (obsolete_sm_object != 0) {
|
|
ASSERT(vd->vdev_obsolete_sm != NULL);
|
|
ASSERT(vd->vdev_removing ||
|
|
vd->vdev_ops == &vdev_indirect_ops);
|
|
ASSERT(vdev_indirect_mapping_num_entries(vim) > 0);
|
|
ASSERT(vdev_indirect_mapping_bytes_mapped(vim) > 0);
|
|
ASSERT3U(obsolete_sm_object, ==,
|
|
space_map_object(vd->vdev_obsolete_sm));
|
|
ASSERT3U(vdev_indirect_mapping_bytes_mapped(vim), >=,
|
|
space_map_allocated(vd->vdev_obsolete_sm));
|
|
}
|
|
ASSERT(vd->vdev_obsolete_segments != NULL);
|
|
|
|
/*
|
|
* Since frees / remaps to an indirect vdev can only
|
|
* happen in syncing context, the obsolete segments
|
|
* tree must be empty when we start syncing.
|
|
*/
|
|
ASSERT0(range_tree_space(vd->vdev_obsolete_segments));
|
|
}
|
|
|
|
/*
|
|
* Set the top-level vdev's max queue depth. Evaluate each top-level's
|
|
* async write queue depth in case it changed. The max queue depth will
|
|
* not change in the middle of syncing out this txg.
|
|
*/
|
|
static void
|
|
spa_sync_adjust_vdev_max_queue_depth(spa_t *spa)
|
|
{
|
|
ASSERT(spa_writeable(spa));
|
|
|
|
vdev_t *rvd = spa->spa_root_vdev;
|
|
uint32_t max_queue_depth = zfs_vdev_async_write_max_active *
|
|
zfs_vdev_queue_depth_pct / 100;
|
|
metaslab_class_t *normal = spa_normal_class(spa);
|
|
metaslab_class_t *special = spa_special_class(spa);
|
|
metaslab_class_t *dedup = spa_dedup_class(spa);
|
|
|
|
uint64_t slots_per_allocator = 0;
|
|
for (int c = 0; c < rvd->vdev_children; c++) {
|
|
vdev_t *tvd = rvd->vdev_child[c];
|
|
|
|
metaslab_group_t *mg = tvd->vdev_mg;
|
|
if (mg == NULL || !metaslab_group_initialized(mg))
|
|
continue;
|
|
|
|
metaslab_class_t *mc = mg->mg_class;
|
|
if (mc != normal && mc != special && mc != dedup)
|
|
continue;
|
|
|
|
/*
|
|
* It is safe to do a lock-free check here because only async
|
|
* allocations look at mg_max_alloc_queue_depth, and async
|
|
* allocations all happen from spa_sync().
|
|
*/
|
|
for (int i = 0; i < mg->mg_allocators; i++) {
|
|
ASSERT0(zfs_refcount_count(
|
|
&(mg->mg_allocator[i].mga_alloc_queue_depth)));
|
|
}
|
|
mg->mg_max_alloc_queue_depth = max_queue_depth;
|
|
|
|
for (int i = 0; i < mg->mg_allocators; i++) {
|
|
mg->mg_allocator[i].mga_cur_max_alloc_queue_depth =
|
|
zfs_vdev_def_queue_depth;
|
|
}
|
|
slots_per_allocator += zfs_vdev_def_queue_depth;
|
|
}
|
|
|
|
for (int i = 0; i < spa->spa_alloc_count; i++) {
|
|
ASSERT0(zfs_refcount_count(&normal->mc_allocator[i].
|
|
mca_alloc_slots));
|
|
ASSERT0(zfs_refcount_count(&special->mc_allocator[i].
|
|
mca_alloc_slots));
|
|
ASSERT0(zfs_refcount_count(&dedup->mc_allocator[i].
|
|
mca_alloc_slots));
|
|
normal->mc_allocator[i].mca_alloc_max_slots =
|
|
slots_per_allocator;
|
|
special->mc_allocator[i].mca_alloc_max_slots =
|
|
slots_per_allocator;
|
|
dedup->mc_allocator[i].mca_alloc_max_slots =
|
|
slots_per_allocator;
|
|
}
|
|
normal->mc_alloc_throttle_enabled = zio_dva_throttle_enabled;
|
|
special->mc_alloc_throttle_enabled = zio_dva_throttle_enabled;
|
|
dedup->mc_alloc_throttle_enabled = zio_dva_throttle_enabled;
|
|
}
|
|
|
|
static void
|
|
spa_sync_condense_indirect(spa_t *spa, dmu_tx_t *tx)
|
|
{
|
|
ASSERT(spa_writeable(spa));
|
|
|
|
vdev_t *rvd = spa->spa_root_vdev;
|
|
for (int c = 0; c < rvd->vdev_children; c++) {
|
|
vdev_t *vd = rvd->vdev_child[c];
|
|
vdev_indirect_state_sync_verify(vd);
|
|
|
|
if (vdev_indirect_should_condense(vd)) {
|
|
spa_condense_indirect_start_sync(vd, tx);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
spa_sync_iterate_to_convergence(spa_t *spa, dmu_tx_t *tx)
|
|
{
|
|
objset_t *mos = spa->spa_meta_objset;
|
|
dsl_pool_t *dp = spa->spa_dsl_pool;
|
|
uint64_t txg = tx->tx_txg;
|
|
bplist_t *free_bpl = &spa->spa_free_bplist[txg & TXG_MASK];
|
|
|
|
do {
|
|
int pass = ++spa->spa_sync_pass;
|
|
|
|
spa_sync_config_object(spa, tx);
|
|
spa_sync_aux_dev(spa, &spa->spa_spares, tx,
|
|
ZPOOL_CONFIG_SPARES, DMU_POOL_SPARES);
|
|
spa_sync_aux_dev(spa, &spa->spa_l2cache, tx,
|
|
ZPOOL_CONFIG_L2CACHE, DMU_POOL_L2CACHE);
|
|
spa_errlog_sync(spa, txg);
|
|
dsl_pool_sync(dp, txg);
|
|
|
|
if (pass < zfs_sync_pass_deferred_free ||
|
|
spa_feature_is_active(spa, SPA_FEATURE_LOG_SPACEMAP)) {
|
|
/*
|
|
* If the log space map feature is active we don't
|
|
* care about deferred frees and the deferred bpobj
|
|
* as the log space map should effectively have the
|
|
* same results (i.e. appending only to one object).
|
|
*/
|
|
spa_sync_frees(spa, free_bpl, tx);
|
|
} else {
|
|
/*
|
|
* We can not defer frees in pass 1, because
|
|
* we sync the deferred frees later in pass 1.
|
|
*/
|
|
ASSERT3U(pass, >, 1);
|
|
bplist_iterate(free_bpl, bpobj_enqueue_alloc_cb,
|
|
&spa->spa_deferred_bpobj, tx);
|
|
}
|
|
|
|
ddt_sync(spa, txg);
|
|
dsl_scan_sync(dp, tx);
|
|
svr_sync(spa, tx);
|
|
spa_sync_upgrades(spa, tx);
|
|
|
|
spa_flush_metaslabs(spa, tx);
|
|
|
|
vdev_t *vd = NULL;
|
|
while ((vd = txg_list_remove(&spa->spa_vdev_txg_list, txg))
|
|
!= NULL)
|
|
vdev_sync(vd, txg);
|
|
|
|
/*
|
|
* Note: We need to check if the MOS is dirty because we could
|
|
* have marked the MOS dirty without updating the uberblock
|
|
* (e.g. if we have sync tasks but no dirty user data). We need
|
|
* to check the uberblock's rootbp because it is updated if we
|
|
* have synced out dirty data (though in this case the MOS will
|
|
* most likely also be dirty due to second order effects, we
|
|
* don't want to rely on that here).
|
|
*/
|
|
if (pass == 1 &&
|
|
spa->spa_uberblock.ub_rootbp.blk_birth < txg &&
|
|
!dmu_objset_is_dirty(mos, txg)) {
|
|
/*
|
|
* Nothing changed on the first pass, therefore this
|
|
* TXG is a no-op. Avoid syncing deferred frees, so
|
|
* that we can keep this TXG as a no-op.
|
|
*/
|
|
ASSERT(txg_list_empty(&dp->dp_dirty_datasets, txg));
|
|
ASSERT(txg_list_empty(&dp->dp_dirty_dirs, txg));
|
|
ASSERT(txg_list_empty(&dp->dp_sync_tasks, txg));
|
|
ASSERT(txg_list_empty(&dp->dp_early_sync_tasks, txg));
|
|
break;
|
|
}
|
|
|
|
spa_sync_deferred_frees(spa, tx);
|
|
} while (dmu_objset_is_dirty(mos, txg));
|
|
}
|
|
|
|
/*
|
|
* Rewrite the vdev configuration (which includes the uberblock) to
|
|
* commit the transaction group.
|
|
*
|
|
* If there are no dirty vdevs, we sync the uberblock to a few random
|
|
* top-level vdevs that are known to be visible in the config cache
|
|
* (see spa_vdev_add() for a complete description). If there *are* dirty
|
|
* vdevs, sync the uberblock to all vdevs.
|
|
*/
|
|
static void
|
|
spa_sync_rewrite_vdev_config(spa_t *spa, dmu_tx_t *tx)
|
|
{
|
|
vdev_t *rvd = spa->spa_root_vdev;
|
|
uint64_t txg = tx->tx_txg;
|
|
|
|
for (;;) {
|
|
int error = 0;
|
|
|
|
/*
|
|
* We hold SCL_STATE to prevent vdev open/close/etc.
|
|
* while we're attempting to write the vdev labels.
|
|
*/
|
|
spa_config_enter(spa, SCL_STATE, FTAG, RW_READER);
|
|
|
|
if (list_is_empty(&spa->spa_config_dirty_list)) {
|
|
vdev_t *svd[SPA_SYNC_MIN_VDEVS] = { NULL };
|
|
int svdcount = 0;
|
|
int children = rvd->vdev_children;
|
|
int c0 = random_in_range(children);
|
|
|
|
for (int c = 0; c < children; c++) {
|
|
vdev_t *vd =
|
|
rvd->vdev_child[(c0 + c) % children];
|
|
|
|
/* Stop when revisiting the first vdev */
|
|
if (c > 0 && svd[0] == vd)
|
|
break;
|
|
|
|
if (vd->vdev_ms_array == 0 ||
|
|
vd->vdev_islog ||
|
|
!vdev_is_concrete(vd))
|
|
continue;
|
|
|
|
svd[svdcount++] = vd;
|
|
if (svdcount == SPA_SYNC_MIN_VDEVS)
|
|
break;
|
|
}
|
|
error = vdev_config_sync(svd, svdcount, txg);
|
|
} else {
|
|
error = vdev_config_sync(rvd->vdev_child,
|
|
rvd->vdev_children, txg);
|
|
}
|
|
|
|
if (error == 0)
|
|
spa->spa_last_synced_guid = rvd->vdev_guid;
|
|
|
|
spa_config_exit(spa, SCL_STATE, FTAG);
|
|
|
|
if (error == 0)
|
|
break;
|
|
zio_suspend(spa, NULL, ZIO_SUSPEND_IOERR);
|
|
zio_resume_wait(spa);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Sync the specified transaction group. New blocks may be dirtied as
|
|
* part of the process, so we iterate until it converges.
|
|
*/
|
|
void
|
|
spa_sync(spa_t *spa, uint64_t txg)
|
|
{
|
|
vdev_t *vd = NULL;
|
|
|
|
VERIFY(spa_writeable(spa));
|
|
|
|
/*
|
|
* Wait for i/os issued in open context that need to complete
|
|
* before this txg syncs.
|
|
*/
|
|
(void) zio_wait(spa->spa_txg_zio[txg & TXG_MASK]);
|
|
spa->spa_txg_zio[txg & TXG_MASK] = zio_root(spa, NULL, NULL,
|
|
ZIO_FLAG_CANFAIL);
|
|
|
|
/*
|
|
* Lock out configuration changes.
|
|
*/
|
|
spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
|
|
|
|
spa->spa_syncing_txg = txg;
|
|
spa->spa_sync_pass = 0;
|
|
|
|
for (int i = 0; i < spa->spa_alloc_count; i++) {
|
|
mutex_enter(&spa->spa_allocs[i].spaa_lock);
|
|
VERIFY0(avl_numnodes(&spa->spa_allocs[i].spaa_tree));
|
|
mutex_exit(&spa->spa_allocs[i].spaa_lock);
|
|
}
|
|
|
|
/*
|
|
* If there are any pending vdev state changes, convert them
|
|
* into config changes that go out with this transaction group.
|
|
*/
|
|
spa_config_enter(spa, SCL_STATE, FTAG, RW_READER);
|
|
while (list_head(&spa->spa_state_dirty_list) != NULL) {
|
|
/*
|
|
* We need the write lock here because, for aux vdevs,
|
|
* calling vdev_config_dirty() modifies sav_config.
|
|
* This is ugly and will become unnecessary when we
|
|
* eliminate the aux vdev wart by integrating all vdevs
|
|
* into the root vdev tree.
|
|
*/
|
|
spa_config_exit(spa, SCL_CONFIG | SCL_STATE, FTAG);
|
|
spa_config_enter(spa, SCL_CONFIG | SCL_STATE, FTAG, RW_WRITER);
|
|
while ((vd = list_head(&spa->spa_state_dirty_list)) != NULL) {
|
|
vdev_state_clean(vd);
|
|
vdev_config_dirty(vd);
|
|
}
|
|
spa_config_exit(spa, SCL_CONFIG | SCL_STATE, FTAG);
|
|
spa_config_enter(spa, SCL_CONFIG | SCL_STATE, FTAG, RW_READER);
|
|
}
|
|
spa_config_exit(spa, SCL_STATE, FTAG);
|
|
|
|
dsl_pool_t *dp = spa->spa_dsl_pool;
|
|
dmu_tx_t *tx = dmu_tx_create_assigned(dp, txg);
|
|
|
|
spa->spa_sync_starttime = gethrtime();
|
|
taskq_cancel_id(system_delay_taskq, spa->spa_deadman_tqid);
|
|
spa->spa_deadman_tqid = taskq_dispatch_delay(system_delay_taskq,
|
|
spa_deadman, spa, TQ_SLEEP, ddi_get_lbolt() +
|
|
NSEC_TO_TICK(spa->spa_deadman_synctime));
|
|
|
|
/*
|
|
* If we are upgrading to SPA_VERSION_RAIDZ_DEFLATE this txg,
|
|
* set spa_deflate if we have no raid-z vdevs.
|
|
*/
|
|
if (spa->spa_ubsync.ub_version < SPA_VERSION_RAIDZ_DEFLATE &&
|
|
spa->spa_uberblock.ub_version >= SPA_VERSION_RAIDZ_DEFLATE) {
|
|
vdev_t *rvd = spa->spa_root_vdev;
|
|
|
|
int i;
|
|
for (i = 0; i < rvd->vdev_children; i++) {
|
|
vd = rvd->vdev_child[i];
|
|
if (vd->vdev_deflate_ratio != SPA_MINBLOCKSIZE)
|
|
break;
|
|
}
|
|
if (i == rvd->vdev_children) {
|
|
spa->spa_deflate = TRUE;
|
|
VERIFY0(zap_add(spa->spa_meta_objset,
|
|
DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_DEFLATE,
|
|
sizeof (uint64_t), 1, &spa->spa_deflate, tx));
|
|
}
|
|
}
|
|
|
|
spa_sync_adjust_vdev_max_queue_depth(spa);
|
|
|
|
spa_sync_condense_indirect(spa, tx);
|
|
|
|
spa_sync_iterate_to_convergence(spa, tx);
|
|
|
|
#ifdef ZFS_DEBUG
|
|
if (!list_is_empty(&spa->spa_config_dirty_list)) {
|
|
/*
|
|
* Make sure that the number of ZAPs for all the vdevs matches
|
|
* the number of ZAPs in the per-vdev ZAP list. This only gets
|
|
* called if the config is dirty; otherwise there may be
|
|
* outstanding AVZ operations that weren't completed in
|
|
* spa_sync_config_object.
|
|
*/
|
|
uint64_t all_vdev_zap_entry_count;
|
|
ASSERT0(zap_count(spa->spa_meta_objset,
|
|
spa->spa_all_vdev_zaps, &all_vdev_zap_entry_count));
|
|
ASSERT3U(vdev_count_verify_zaps(spa->spa_root_vdev), ==,
|
|
all_vdev_zap_entry_count);
|
|
}
|
|
#endif
|
|
|
|
if (spa->spa_vdev_removal != NULL) {
|
|
ASSERT0(spa->spa_vdev_removal->svr_bytes_done[txg & TXG_MASK]);
|
|
}
|
|
|
|
spa_sync_rewrite_vdev_config(spa, tx);
|
|
dmu_tx_commit(tx);
|
|
|
|
taskq_cancel_id(system_delay_taskq, spa->spa_deadman_tqid);
|
|
spa->spa_deadman_tqid = 0;
|
|
|
|
/*
|
|
* Clear the dirty config list.
|
|
*/
|
|
while ((vd = list_head(&spa->spa_config_dirty_list)) != NULL)
|
|
vdev_config_clean(vd);
|
|
|
|
/*
|
|
* Now that the new config has synced transactionally,
|
|
* let it become visible to the config cache.
|
|
*/
|
|
if (spa->spa_config_syncing != NULL) {
|
|
spa_config_set(spa, spa->spa_config_syncing);
|
|
spa->spa_config_txg = txg;
|
|
spa->spa_config_syncing = NULL;
|
|
}
|
|
|
|
dsl_pool_sync_done(dp, txg);
|
|
|
|
for (int i = 0; i < spa->spa_alloc_count; i++) {
|
|
mutex_enter(&spa->spa_allocs[i].spaa_lock);
|
|
VERIFY0(avl_numnodes(&spa->spa_allocs[i].spaa_tree));
|
|
mutex_exit(&spa->spa_allocs[i].spaa_lock);
|
|
}
|
|
|
|
/*
|
|
* Update usable space statistics.
|
|
*/
|
|
while ((vd = txg_list_remove(&spa->spa_vdev_txg_list, TXG_CLEAN(txg)))
|
|
!= NULL)
|
|
vdev_sync_done(vd, txg);
|
|
|
|
metaslab_class_evict_old(spa->spa_normal_class, txg);
|
|
metaslab_class_evict_old(spa->spa_log_class, txg);
|
|
|
|
spa_sync_close_syncing_log_sm(spa);
|
|
|
|
spa_update_dspace(spa);
|
|
|
|
/*
|
|
* It had better be the case that we didn't dirty anything
|
|
* since vdev_config_sync().
|
|
*/
|
|
ASSERT(txg_list_empty(&dp->dp_dirty_datasets, txg));
|
|
ASSERT(txg_list_empty(&dp->dp_dirty_dirs, txg));
|
|
ASSERT(txg_list_empty(&spa->spa_vdev_txg_list, txg));
|
|
|
|
while (zfs_pause_spa_sync)
|
|
delay(1);
|
|
|
|
spa->spa_sync_pass = 0;
|
|
|
|
/*
|
|
* Update the last synced uberblock here. We want to do this at
|
|
* the end of spa_sync() so that consumers of spa_last_synced_txg()
|
|
* will be guaranteed that all the processing associated with
|
|
* that txg has been completed.
|
|
*/
|
|
spa->spa_ubsync = spa->spa_uberblock;
|
|
spa_config_exit(spa, SCL_CONFIG, FTAG);
|
|
|
|
spa_handle_ignored_writes(spa);
|
|
|
|
/*
|
|
* If any async tasks have been requested, kick them off.
|
|
*/
|
|
spa_async_dispatch(spa);
|
|
}
|
|
|
|
/*
|
|
* Sync all pools. We don't want to hold the namespace lock across these
|
|
* operations, so we take a reference on the spa_t and drop the lock during the
|
|
* sync.
|
|
*/
|
|
void
|
|
spa_sync_allpools(void)
|
|
{
|
|
spa_t *spa = NULL;
|
|
mutex_enter(&spa_namespace_lock);
|
|
while ((spa = spa_next(spa)) != NULL) {
|
|
if (spa_state(spa) != POOL_STATE_ACTIVE ||
|
|
!spa_writeable(spa) || spa_suspended(spa))
|
|
continue;
|
|
spa_open_ref(spa, FTAG);
|
|
mutex_exit(&spa_namespace_lock);
|
|
txg_wait_synced(spa_get_dsl(spa), 0);
|
|
mutex_enter(&spa_namespace_lock);
|
|
spa_close(spa, FTAG);
|
|
}
|
|
mutex_exit(&spa_namespace_lock);
|
|
}
|
|
|
|
/*
|
|
* ==========================================================================
|
|
* Miscellaneous routines
|
|
* ==========================================================================
|
|
*/
|
|
|
|
/*
|
|
* Remove all pools in the system.
|
|
*/
|
|
void
|
|
spa_evict_all(void)
|
|
{
|
|
spa_t *spa;
|
|
|
|
/*
|
|
* Remove all cached state. All pools should be closed now,
|
|
* so every spa in the AVL tree should be unreferenced.
|
|
*/
|
|
mutex_enter(&spa_namespace_lock);
|
|
while ((spa = spa_next(NULL)) != NULL) {
|
|
/*
|
|
* Stop async tasks. The async thread may need to detach
|
|
* a device that's been replaced, which requires grabbing
|
|
* spa_namespace_lock, so we must drop it here.
|
|
*/
|
|
spa_open_ref(spa, FTAG);
|
|
mutex_exit(&spa_namespace_lock);
|
|
spa_async_suspend(spa);
|
|
mutex_enter(&spa_namespace_lock);
|
|
spa_close(spa, FTAG);
|
|
|
|
if (spa->spa_state != POOL_STATE_UNINITIALIZED) {
|
|
spa_unload(spa);
|
|
spa_deactivate(spa);
|
|
}
|
|
spa_remove(spa);
|
|
}
|
|
mutex_exit(&spa_namespace_lock);
|
|
}
|
|
|
|
vdev_t *
|
|
spa_lookup_by_guid(spa_t *spa, uint64_t guid, boolean_t aux)
|
|
{
|
|
vdev_t *vd;
|
|
int i;
|
|
|
|
if ((vd = vdev_lookup_by_guid(spa->spa_root_vdev, guid)) != NULL)
|
|
return (vd);
|
|
|
|
if (aux) {
|
|
for (i = 0; i < spa->spa_l2cache.sav_count; i++) {
|
|
vd = spa->spa_l2cache.sav_vdevs[i];
|
|
if (vd->vdev_guid == guid)
|
|
return (vd);
|
|
}
|
|
|
|
for (i = 0; i < spa->spa_spares.sav_count; i++) {
|
|
vd = spa->spa_spares.sav_vdevs[i];
|
|
if (vd->vdev_guid == guid)
|
|
return (vd);
|
|
}
|
|
}
|
|
|
|
return (NULL);
|
|
}
|
|
|
|
void
|
|
spa_upgrade(spa_t *spa, uint64_t version)
|
|
{
|
|
ASSERT(spa_writeable(spa));
|
|
|
|
spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER);
|
|
|
|
/*
|
|
* This should only be called for a non-faulted pool, and since a
|
|
* future version would result in an unopenable pool, this shouldn't be
|
|
* possible.
|
|
*/
|
|
ASSERT(SPA_VERSION_IS_SUPPORTED(spa->spa_uberblock.ub_version));
|
|
ASSERT3U(version, >=, spa->spa_uberblock.ub_version);
|
|
|
|
spa->spa_uberblock.ub_version = version;
|
|
vdev_config_dirty(spa->spa_root_vdev);
|
|
|
|
spa_config_exit(spa, SCL_ALL, FTAG);
|
|
|
|
txg_wait_synced(spa_get_dsl(spa), 0);
|
|
}
|
|
|
|
boolean_t
|
|
spa_has_spare(spa_t *spa, uint64_t guid)
|
|
{
|
|
int i;
|
|
uint64_t spareguid;
|
|
spa_aux_vdev_t *sav = &spa->spa_spares;
|
|
|
|
for (i = 0; i < sav->sav_count; i++)
|
|
if (sav->sav_vdevs[i]->vdev_guid == guid)
|
|
return (B_TRUE);
|
|
|
|
for (i = 0; i < sav->sav_npending; i++) {
|
|
if (nvlist_lookup_uint64(sav->sav_pending[i], ZPOOL_CONFIG_GUID,
|
|
&spareguid) == 0 && spareguid == guid)
|
|
return (B_TRUE);
|
|
}
|
|
|
|
return (B_FALSE);
|
|
}
|
|
|
|
/*
|
|
* Check if a pool has an active shared spare device.
|
|
* Note: reference count of an active spare is 2, as a spare and as a replace
|
|
*/
|
|
static boolean_t
|
|
spa_has_active_shared_spare(spa_t *spa)
|
|
{
|
|
int i, refcnt;
|
|
uint64_t pool;
|
|
spa_aux_vdev_t *sav = &spa->spa_spares;
|
|
|
|
for (i = 0; i < sav->sav_count; i++) {
|
|
if (spa_spare_exists(sav->sav_vdevs[i]->vdev_guid, &pool,
|
|
&refcnt) && pool != 0ULL && pool == spa_guid(spa) &&
|
|
refcnt > 2)
|
|
return (B_TRUE);
|
|
}
|
|
|
|
return (B_FALSE);
|
|
}
|
|
|
|
uint64_t
|
|
spa_total_metaslabs(spa_t *spa)
|
|
{
|
|
vdev_t *rvd = spa->spa_root_vdev;
|
|
|
|
uint64_t m = 0;
|
|
for (uint64_t c = 0; c < rvd->vdev_children; c++) {
|
|
vdev_t *vd = rvd->vdev_child[c];
|
|
if (!vdev_is_concrete(vd))
|
|
continue;
|
|
m += vd->vdev_ms_count;
|
|
}
|
|
return (m);
|
|
}
|
|
|
|
/*
|
|
* Notify any waiting threads that some activity has switched from being in-
|
|
* progress to not-in-progress so that the thread can wake up and determine
|
|
* whether it is finished waiting.
|
|
*/
|
|
void
|
|
spa_notify_waiters(spa_t *spa)
|
|
{
|
|
/*
|
|
* Acquiring spa_activities_lock here prevents the cv_broadcast from
|
|
* happening between the waiting thread's check and cv_wait.
|
|
*/
|
|
mutex_enter(&spa->spa_activities_lock);
|
|
cv_broadcast(&spa->spa_activities_cv);
|
|
mutex_exit(&spa->spa_activities_lock);
|
|
}
|
|
|
|
/*
|
|
* Notify any waiting threads that the pool is exporting, and then block until
|
|
* they are finished using the spa_t.
|
|
*/
|
|
void
|
|
spa_wake_waiters(spa_t *spa)
|
|
{
|
|
mutex_enter(&spa->spa_activities_lock);
|
|
spa->spa_waiters_cancel = B_TRUE;
|
|
cv_broadcast(&spa->spa_activities_cv);
|
|
while (spa->spa_waiters != 0)
|
|
cv_wait(&spa->spa_waiters_cv, &spa->spa_activities_lock);
|
|
spa->spa_waiters_cancel = B_FALSE;
|
|
mutex_exit(&spa->spa_activities_lock);
|
|
}
|
|
|
|
/* Whether the vdev or any of its descendants are being initialized/trimmed. */
|
|
static boolean_t
|
|
spa_vdev_activity_in_progress_impl(vdev_t *vd, zpool_wait_activity_t activity)
|
|
{
|
|
spa_t *spa = vd->vdev_spa;
|
|
|
|
ASSERT(spa_config_held(spa, SCL_CONFIG | SCL_STATE, RW_READER));
|
|
ASSERT(MUTEX_HELD(&spa->spa_activities_lock));
|
|
ASSERT(activity == ZPOOL_WAIT_INITIALIZE ||
|
|
activity == ZPOOL_WAIT_TRIM);
|
|
|
|
kmutex_t *lock = activity == ZPOOL_WAIT_INITIALIZE ?
|
|
&vd->vdev_initialize_lock : &vd->vdev_trim_lock;
|
|
|
|
mutex_exit(&spa->spa_activities_lock);
|
|
mutex_enter(lock);
|
|
mutex_enter(&spa->spa_activities_lock);
|
|
|
|
boolean_t in_progress = (activity == ZPOOL_WAIT_INITIALIZE) ?
|
|
(vd->vdev_initialize_state == VDEV_INITIALIZE_ACTIVE) :
|
|
(vd->vdev_trim_state == VDEV_TRIM_ACTIVE);
|
|
mutex_exit(lock);
|
|
|
|
if (in_progress)
|
|
return (B_TRUE);
|
|
|
|
for (int i = 0; i < vd->vdev_children; i++) {
|
|
if (spa_vdev_activity_in_progress_impl(vd->vdev_child[i],
|
|
activity))
|
|
return (B_TRUE);
|
|
}
|
|
|
|
return (B_FALSE);
|
|
}
|
|
|
|
/*
|
|
* If use_guid is true, this checks whether the vdev specified by guid is
|
|
* being initialized/trimmed. Otherwise, it checks whether any vdev in the pool
|
|
* is being initialized/trimmed. The caller must hold the config lock and
|
|
* spa_activities_lock.
|
|
*/
|
|
static int
|
|
spa_vdev_activity_in_progress(spa_t *spa, boolean_t use_guid, uint64_t guid,
|
|
zpool_wait_activity_t activity, boolean_t *in_progress)
|
|
{
|
|
mutex_exit(&spa->spa_activities_lock);
|
|
spa_config_enter(spa, SCL_CONFIG | SCL_STATE, FTAG, RW_READER);
|
|
mutex_enter(&spa->spa_activities_lock);
|
|
|
|
vdev_t *vd;
|
|
if (use_guid) {
|
|
vd = spa_lookup_by_guid(spa, guid, B_FALSE);
|
|
if (vd == NULL || !vd->vdev_ops->vdev_op_leaf) {
|
|
spa_config_exit(spa, SCL_CONFIG | SCL_STATE, FTAG);
|
|
return (EINVAL);
|
|
}
|
|
} else {
|
|
vd = spa->spa_root_vdev;
|
|
}
|
|
|
|
*in_progress = spa_vdev_activity_in_progress_impl(vd, activity);
|
|
|
|
spa_config_exit(spa, SCL_CONFIG | SCL_STATE, FTAG);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Locking for waiting threads
|
|
* ---------------------------
|
|
*
|
|
* Waiting threads need a way to check whether a given activity is in progress,
|
|
* and then, if it is, wait for it to complete. Each activity will have some
|
|
* in-memory representation of the relevant on-disk state which can be used to
|
|
* determine whether or not the activity is in progress. The in-memory state and
|
|
* the locking used to protect it will be different for each activity, and may
|
|
* not be suitable for use with a cvar (e.g., some state is protected by the
|
|
* config lock). To allow waiting threads to wait without any races, another
|
|
* lock, spa_activities_lock, is used.
|
|
*
|
|
* When the state is checked, both the activity-specific lock (if there is one)
|
|
* and spa_activities_lock are held. In some cases, the activity-specific lock
|
|
* is acquired explicitly (e.g. the config lock). In others, the locking is
|
|
* internal to some check (e.g. bpobj_is_empty). After checking, the waiting
|
|
* thread releases the activity-specific lock and, if the activity is in
|
|
* progress, then cv_waits using spa_activities_lock.
|
|
*
|
|
* The waiting thread is woken when another thread, one completing some
|
|
* activity, updates the state of the activity and then calls
|
|
* spa_notify_waiters, which will cv_broadcast. This 'completing' thread only
|
|
* needs to hold its activity-specific lock when updating the state, and this
|
|
* lock can (but doesn't have to) be dropped before calling spa_notify_waiters.
|
|
*
|
|
* Because spa_notify_waiters acquires spa_activities_lock before broadcasting,
|
|
* and because it is held when the waiting thread checks the state of the
|
|
* activity, it can never be the case that the completing thread both updates
|
|
* the activity state and cv_broadcasts in between the waiting thread's check
|
|
* and cv_wait. Thus, a waiting thread can never miss a wakeup.
|
|
*
|
|
* In order to prevent deadlock, when the waiting thread does its check, in some
|
|
* cases it will temporarily drop spa_activities_lock in order to acquire the
|
|
* activity-specific lock. The order in which spa_activities_lock and the
|
|
* activity specific lock are acquired in the waiting thread is determined by
|
|
* the order in which they are acquired in the completing thread; if the
|
|
* completing thread calls spa_notify_waiters with the activity-specific lock
|
|
* held, then the waiting thread must also acquire the activity-specific lock
|
|
* first.
|
|
*/
|
|
|
|
static int
|
|
spa_activity_in_progress(spa_t *spa, zpool_wait_activity_t activity,
|
|
boolean_t use_tag, uint64_t tag, boolean_t *in_progress)
|
|
{
|
|
int error = 0;
|
|
|
|
ASSERT(MUTEX_HELD(&spa->spa_activities_lock));
|
|
|
|
switch (activity) {
|
|
case ZPOOL_WAIT_CKPT_DISCARD:
|
|
*in_progress =
|
|
(spa_feature_is_active(spa, SPA_FEATURE_POOL_CHECKPOINT) &&
|
|
zap_contains(spa_meta_objset(spa),
|
|
DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_ZPOOL_CHECKPOINT) ==
|
|
ENOENT);
|
|
break;
|
|
case ZPOOL_WAIT_FREE:
|
|
*in_progress = ((spa_version(spa) >= SPA_VERSION_DEADLISTS &&
|
|
!bpobj_is_empty(&spa->spa_dsl_pool->dp_free_bpobj)) ||
|
|
spa_feature_is_active(spa, SPA_FEATURE_ASYNC_DESTROY) ||
|
|
spa_livelist_delete_check(spa));
|
|
break;
|
|
case ZPOOL_WAIT_INITIALIZE:
|
|
case ZPOOL_WAIT_TRIM:
|
|
error = spa_vdev_activity_in_progress(spa, use_tag, tag,
|
|
activity, in_progress);
|
|
break;
|
|
case ZPOOL_WAIT_REPLACE:
|
|
mutex_exit(&spa->spa_activities_lock);
|
|
spa_config_enter(spa, SCL_CONFIG | SCL_STATE, FTAG, RW_READER);
|
|
mutex_enter(&spa->spa_activities_lock);
|
|
|
|
*in_progress = vdev_replace_in_progress(spa->spa_root_vdev);
|
|
spa_config_exit(spa, SCL_CONFIG | SCL_STATE, FTAG);
|
|
break;
|
|
case ZPOOL_WAIT_REMOVE:
|
|
*in_progress = (spa->spa_removing_phys.sr_state ==
|
|
DSS_SCANNING);
|
|
break;
|
|
case ZPOOL_WAIT_RESILVER:
|
|
if ((*in_progress = vdev_rebuild_active(spa->spa_root_vdev)))
|
|
break;
|
|
/* fall through */
|
|
case ZPOOL_WAIT_SCRUB:
|
|
{
|
|
boolean_t scanning, paused, is_scrub;
|
|
dsl_scan_t *scn = spa->spa_dsl_pool->dp_scan;
|
|
|
|
is_scrub = (scn->scn_phys.scn_func == POOL_SCAN_SCRUB);
|
|
scanning = (scn->scn_phys.scn_state == DSS_SCANNING);
|
|
paused = dsl_scan_is_paused_scrub(scn);
|
|
*in_progress = (scanning && !paused &&
|
|
is_scrub == (activity == ZPOOL_WAIT_SCRUB));
|
|
break;
|
|
}
|
|
default:
|
|
panic("unrecognized value for activity %d", activity);
|
|
}
|
|
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
spa_wait_common(const char *pool, zpool_wait_activity_t activity,
|
|
boolean_t use_tag, uint64_t tag, boolean_t *waited)
|
|
{
|
|
/*
|
|
* The tag is used to distinguish between instances of an activity.
|
|
* 'initialize' and 'trim' are the only activities that we use this for.
|
|
* The other activities can only have a single instance in progress in a
|
|
* pool at one time, making the tag unnecessary.
|
|
*
|
|
* There can be multiple devices being replaced at once, but since they
|
|
* all finish once resilvering finishes, we don't bother keeping track
|
|
* of them individually, we just wait for them all to finish.
|
|
*/
|
|
if (use_tag && activity != ZPOOL_WAIT_INITIALIZE &&
|
|
activity != ZPOOL_WAIT_TRIM)
|
|
return (EINVAL);
|
|
|
|
if (activity < 0 || activity >= ZPOOL_WAIT_NUM_ACTIVITIES)
|
|
return (EINVAL);
|
|
|
|
spa_t *spa;
|
|
int error = spa_open(pool, &spa, FTAG);
|
|
if (error != 0)
|
|
return (error);
|
|
|
|
/*
|
|
* Increment the spa's waiter count so that we can call spa_close and
|
|
* still ensure that the spa_t doesn't get freed before this thread is
|
|
* finished with it when the pool is exported. We want to call spa_close
|
|
* before we start waiting because otherwise the additional ref would
|
|
* prevent the pool from being exported or destroyed throughout the
|
|
* potentially long wait.
|
|
*/
|
|
mutex_enter(&spa->spa_activities_lock);
|
|
spa->spa_waiters++;
|
|
spa_close(spa, FTAG);
|
|
|
|
*waited = B_FALSE;
|
|
for (;;) {
|
|
boolean_t in_progress;
|
|
error = spa_activity_in_progress(spa, activity, use_tag, tag,
|
|
&in_progress);
|
|
|
|
if (error || !in_progress || spa->spa_waiters_cancel)
|
|
break;
|
|
|
|
*waited = B_TRUE;
|
|
|
|
if (cv_wait_sig(&spa->spa_activities_cv,
|
|
&spa->spa_activities_lock) == 0) {
|
|
error = EINTR;
|
|
break;
|
|
}
|
|
}
|
|
|
|
spa->spa_waiters--;
|
|
cv_signal(&spa->spa_waiters_cv);
|
|
mutex_exit(&spa->spa_activities_lock);
|
|
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Wait for a particular instance of the specified activity to complete, where
|
|
* the instance is identified by 'tag'
|
|
*/
|
|
int
|
|
spa_wait_tag(const char *pool, zpool_wait_activity_t activity, uint64_t tag,
|
|
boolean_t *waited)
|
|
{
|
|
return (spa_wait_common(pool, activity, B_TRUE, tag, waited));
|
|
}
|
|
|
|
/*
|
|
* Wait for all instances of the specified activity complete
|
|
*/
|
|
int
|
|
spa_wait(const char *pool, zpool_wait_activity_t activity, boolean_t *waited)
|
|
{
|
|
|
|
return (spa_wait_common(pool, activity, B_FALSE, 0, waited));
|
|
}
|
|
|
|
sysevent_t *
|
|
spa_event_create(spa_t *spa, vdev_t *vd, nvlist_t *hist_nvl, const char *name)
|
|
{
|
|
sysevent_t *ev = NULL;
|
|
#ifdef _KERNEL
|
|
nvlist_t *resource;
|
|
|
|
resource = zfs_event_create(spa, vd, FM_SYSEVENT_CLASS, name, hist_nvl);
|
|
if (resource) {
|
|
ev = kmem_alloc(sizeof (sysevent_t), KM_SLEEP);
|
|
ev->resource = resource;
|
|
}
|
|
#endif
|
|
return (ev);
|
|
}
|
|
|
|
void
|
|
spa_event_post(sysevent_t *ev)
|
|
{
|
|
#ifdef _KERNEL
|
|
if (ev) {
|
|
zfs_zevent_post(ev->resource, NULL, zfs_zevent_post_cb);
|
|
kmem_free(ev, sizeof (*ev));
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* Post a zevent corresponding to the given sysevent. The 'name' must be one
|
|
* of the event definitions in sys/sysevent/eventdefs.h. The payload will be
|
|
* filled in from the spa and (optionally) the vdev. This doesn't do anything
|
|
* in the userland libzpool, as we don't want consumers to misinterpret ztest
|
|
* or zdb as real changes.
|
|
*/
|
|
void
|
|
spa_event_notify(spa_t *spa, vdev_t *vd, nvlist_t *hist_nvl, const char *name)
|
|
{
|
|
spa_event_post(spa_event_create(spa, vd, hist_nvl, name));
|
|
}
|
|
|
|
/* state manipulation functions */
|
|
EXPORT_SYMBOL(spa_open);
|
|
EXPORT_SYMBOL(spa_open_rewind);
|
|
EXPORT_SYMBOL(spa_get_stats);
|
|
EXPORT_SYMBOL(spa_create);
|
|
EXPORT_SYMBOL(spa_import);
|
|
EXPORT_SYMBOL(spa_tryimport);
|
|
EXPORT_SYMBOL(spa_destroy);
|
|
EXPORT_SYMBOL(spa_export);
|
|
EXPORT_SYMBOL(spa_reset);
|
|
EXPORT_SYMBOL(spa_async_request);
|
|
EXPORT_SYMBOL(spa_async_suspend);
|
|
EXPORT_SYMBOL(spa_async_resume);
|
|
EXPORT_SYMBOL(spa_inject_addref);
|
|
EXPORT_SYMBOL(spa_inject_delref);
|
|
EXPORT_SYMBOL(spa_scan_stat_init);
|
|
EXPORT_SYMBOL(spa_scan_get_stats);
|
|
|
|
/* device manipulation */
|
|
EXPORT_SYMBOL(spa_vdev_add);
|
|
EXPORT_SYMBOL(spa_vdev_attach);
|
|
EXPORT_SYMBOL(spa_vdev_detach);
|
|
EXPORT_SYMBOL(spa_vdev_setpath);
|
|
EXPORT_SYMBOL(spa_vdev_setfru);
|
|
EXPORT_SYMBOL(spa_vdev_split_mirror);
|
|
|
|
/* spare statech is global across all pools) */
|
|
EXPORT_SYMBOL(spa_spare_add);
|
|
EXPORT_SYMBOL(spa_spare_remove);
|
|
EXPORT_SYMBOL(spa_spare_exists);
|
|
EXPORT_SYMBOL(spa_spare_activate);
|
|
|
|
/* L2ARC statech is global across all pools) */
|
|
EXPORT_SYMBOL(spa_l2cache_add);
|
|
EXPORT_SYMBOL(spa_l2cache_remove);
|
|
EXPORT_SYMBOL(spa_l2cache_exists);
|
|
EXPORT_SYMBOL(spa_l2cache_activate);
|
|
EXPORT_SYMBOL(spa_l2cache_drop);
|
|
|
|
/* scanning */
|
|
EXPORT_SYMBOL(spa_scan);
|
|
EXPORT_SYMBOL(spa_scan_stop);
|
|
|
|
/* spa syncing */
|
|
EXPORT_SYMBOL(spa_sync); /* only for DMU use */
|
|
EXPORT_SYMBOL(spa_sync_allpools);
|
|
|
|
/* properties */
|
|
EXPORT_SYMBOL(spa_prop_set);
|
|
EXPORT_SYMBOL(spa_prop_get);
|
|
EXPORT_SYMBOL(spa_prop_clear_bootfs);
|
|
|
|
/* asynchronous event notification */
|
|
EXPORT_SYMBOL(spa_event_notify);
|
|
|
|
/* BEGIN CSTYLED */
|
|
ZFS_MODULE_PARAM(zfs_spa, spa_, load_verify_shift, INT, ZMOD_RW,
|
|
"log2 fraction of arc that can be used by inflight I/Os when "
|
|
"verifying pool during import");
|
|
|
|
ZFS_MODULE_PARAM(zfs_spa, spa_, load_verify_metadata, INT, ZMOD_RW,
|
|
"Set to traverse metadata on pool import");
|
|
|
|
ZFS_MODULE_PARAM(zfs_spa, spa_, load_verify_data, INT, ZMOD_RW,
|
|
"Set to traverse data on pool import");
|
|
|
|
ZFS_MODULE_PARAM(zfs_spa, spa_, load_print_vdev_tree, INT, ZMOD_RW,
|
|
"Print vdev tree to zfs_dbgmsg during pool import");
|
|
|
|
ZFS_MODULE_PARAM(zfs_zio, zio_, taskq_batch_pct, UINT, ZMOD_RD,
|
|
"Percentage of CPUs to run an IO worker thread");
|
|
|
|
ZFS_MODULE_PARAM(zfs_zio, zio_, taskq_batch_tpq, UINT, ZMOD_RD,
|
|
"Number of threads per IO worker taskqueue");
|
|
|
|
ZFS_MODULE_PARAM(zfs, zfs_, max_missing_tvds, ULONG, ZMOD_RW,
|
|
"Allow importing pool with up to this number of missing top-level "
|
|
"vdevs (in read-only mode)");
|
|
|
|
ZFS_MODULE_PARAM(zfs_livelist_condense, zfs_livelist_condense_, zthr_pause, INT, ZMOD_RW,
|
|
"Set the livelist condense zthr to pause");
|
|
|
|
ZFS_MODULE_PARAM(zfs_livelist_condense, zfs_livelist_condense_, sync_pause, INT, ZMOD_RW,
|
|
"Set the livelist condense synctask to pause");
|
|
|
|
ZFS_MODULE_PARAM(zfs_livelist_condense, zfs_livelist_condense_, sync_cancel, INT, ZMOD_RW,
|
|
"Whether livelist condensing was canceled in the synctask");
|
|
|
|
ZFS_MODULE_PARAM(zfs_livelist_condense, zfs_livelist_condense_, zthr_cancel, INT, ZMOD_RW,
|
|
"Whether livelist condensing was canceled in the zthr function");
|
|
|
|
ZFS_MODULE_PARAM(zfs_livelist_condense, zfs_livelist_condense_, new_alloc, INT, ZMOD_RW,
|
|
"Whether extra ALLOC blkptrs were added to a livelist entry while it "
|
|
"was being condensed");
|
|
/* END CSTYLED */
|