5575 lines
153 KiB
C
5575 lines
153 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, 2021 by Delphix. All rights reserved.
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* Copyright 2017 Nexenta Systems, Inc.
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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 2017 Joyent, Inc.
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* Copyright (c) 2017, Intel Corporation.
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* Copyright (c) 2019, Datto Inc. All rights reserved.
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* Copyright (c) 2021, 2023 Hewlett Packard Enterprise Development LP.
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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.h>
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#include <sys/spa_impl.h>
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#include <sys/bpobj.h>
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#include <sys/dmu.h>
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#include <sys/dmu_tx.h>
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#include <sys/dsl_dir.h>
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#include <sys/vdev_impl.h>
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#include <sys/vdev_rebuild.h>
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#include <sys/vdev_draid.h>
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#include <sys/uberblock_impl.h>
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#include <sys/metaslab.h>
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#include <sys/metaslab_impl.h>
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#include <sys/space_map.h>
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#include <sys/space_reftree.h>
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#include <sys/zio.h>
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#include <sys/zap.h>
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#include <sys/fs/zfs.h>
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#include <sys/arc.h>
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#include <sys/zil.h>
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#include <sys/dsl_scan.h>
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#include <sys/vdev_raidz.h>
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#include <sys/abd.h>
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#include <sys/vdev_initialize.h>
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#include <sys/vdev_trim.h>
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#include <sys/zvol.h>
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#include <sys/zfs_ratelimit.h>
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/*
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* One metaslab from each (normal-class) vdev is used by the ZIL. These are
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* called "embedded slog metaslabs", are referenced by vdev_log_mg, and are
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* part of the spa_embedded_log_class. The metaslab with the most free space
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* in each vdev is selected for this purpose when the pool is opened (or a
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* vdev is added). See vdev_metaslab_init().
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*
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* Log blocks can be allocated from the following locations. Each one is tried
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* in order until the allocation succeeds:
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* 1. dedicated log vdevs, aka "slog" (spa_log_class)
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* 2. embedded slog metaslabs (spa_embedded_log_class)
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* 3. other metaslabs in normal vdevs (spa_normal_class)
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*
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* zfs_embedded_slog_min_ms disables the embedded slog if there are fewer
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* than this number of metaslabs in the vdev. This ensures that we don't set
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* aside an unreasonable amount of space for the ZIL. If set to less than
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* 1 << (spa_slop_shift + 1), on small pools the usable space may be reduced
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* (by more than 1<<spa_slop_shift) due to the embedded slog metaslab.
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*/
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int zfs_embedded_slog_min_ms = 64;
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/* default target for number of metaslabs per top-level vdev */
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int zfs_vdev_default_ms_count = 200;
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/* minimum number of metaslabs per top-level vdev */
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int zfs_vdev_min_ms_count = 16;
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/* practical upper limit of total metaslabs per top-level vdev */
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int zfs_vdev_ms_count_limit = 1ULL << 17;
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/* lower limit for metaslab size (512M) */
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int zfs_vdev_default_ms_shift = 29;
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/* upper limit for metaslab size (16G) */
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int zfs_vdev_max_ms_shift = 34;
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int vdev_validate_skip = B_FALSE;
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/*
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* Since the DTL space map of a vdev is not expected to have a lot of
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* entries, we default its block size to 4K.
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*/
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int zfs_vdev_dtl_sm_blksz = (1 << 12);
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/*
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* Rate limit slow IO (delay) events to this many per second.
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*/
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unsigned int zfs_slow_io_events_per_second = 20;
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/*
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* Rate limit checksum events after this many checksum errors per second.
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*/
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unsigned int zfs_checksum_events_per_second = 20;
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/*
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* Ignore errors during scrub/resilver. Allows to work around resilver
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* upon import when there are pool errors.
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*/
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int zfs_scan_ignore_errors = 0;
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/*
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* vdev-wide space maps that have lots of entries written to them at
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* the end of each transaction can benefit from a higher I/O bandwidth
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* (e.g. vdev_obsolete_sm), thus we default their block size to 128K.
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*/
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int zfs_vdev_standard_sm_blksz = (1 << 17);
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/*
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* Tunable parameter for debugging or performance analysis. Setting this
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* will cause pool corruption on power loss if a volatile out-of-order
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* write cache is enabled.
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*/
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int zfs_nocacheflush = 0;
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/*
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* Maximum and minimum ashift values that can be automatically set based on
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* vdev's physical ashift (disk's physical sector size). While ASHIFT_MAX
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* is higher than the maximum value, it is intentionally limited here to not
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* excessively impact pool space efficiency. Higher ashift values may still
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* be forced by vdev logical ashift or by user via ashift property, but won't
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* be set automatically as a performance optimization.
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*/
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uint64_t zfs_vdev_max_auto_ashift = 14;
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uint64_t zfs_vdev_min_auto_ashift = ASHIFT_MIN;
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/*PRINTFLIKE2*/
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void
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vdev_dbgmsg(vdev_t *vd, const char *fmt, ...)
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{
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va_list adx;
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char buf[256];
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va_start(adx, fmt);
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(void) vsnprintf(buf, sizeof (buf), fmt, adx);
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va_end(adx);
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if (vd->vdev_path != NULL) {
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zfs_dbgmsg("%s vdev '%s': %s", vd->vdev_ops->vdev_op_type,
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vd->vdev_path, buf);
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} else {
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zfs_dbgmsg("%s-%llu vdev (guid %llu): %s",
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vd->vdev_ops->vdev_op_type,
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(u_longlong_t)vd->vdev_id,
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(u_longlong_t)vd->vdev_guid, buf);
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}
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}
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void
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vdev_dbgmsg_print_tree(vdev_t *vd, int indent)
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{
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char state[20];
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if (vd->vdev_ishole || vd->vdev_ops == &vdev_missing_ops) {
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zfs_dbgmsg("%*svdev %llu: %s", indent, "",
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(u_longlong_t)vd->vdev_id,
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vd->vdev_ops->vdev_op_type);
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return;
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}
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switch (vd->vdev_state) {
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case VDEV_STATE_UNKNOWN:
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(void) snprintf(state, sizeof (state), "unknown");
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break;
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case VDEV_STATE_CLOSED:
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(void) snprintf(state, sizeof (state), "closed");
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break;
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case VDEV_STATE_OFFLINE:
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(void) snprintf(state, sizeof (state), "offline");
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break;
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case VDEV_STATE_REMOVED:
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(void) snprintf(state, sizeof (state), "removed");
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break;
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case VDEV_STATE_CANT_OPEN:
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(void) snprintf(state, sizeof (state), "can't open");
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break;
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case VDEV_STATE_FAULTED:
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(void) snprintf(state, sizeof (state), "faulted");
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break;
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case VDEV_STATE_DEGRADED:
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(void) snprintf(state, sizeof (state), "degraded");
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break;
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case VDEV_STATE_HEALTHY:
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(void) snprintf(state, sizeof (state), "healthy");
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break;
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default:
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(void) snprintf(state, sizeof (state), "<state %u>",
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(uint_t)vd->vdev_state);
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}
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zfs_dbgmsg("%*svdev %u: %s%s, guid: %llu, path: %s, %s", indent,
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"", (int)vd->vdev_id, vd->vdev_ops->vdev_op_type,
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vd->vdev_islog ? " (log)" : "",
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(u_longlong_t)vd->vdev_guid,
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vd->vdev_path ? vd->vdev_path : "N/A", state);
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for (uint64_t i = 0; i < vd->vdev_children; i++)
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vdev_dbgmsg_print_tree(vd->vdev_child[i], indent + 2);
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}
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/*
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* Virtual device management.
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*/
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static vdev_ops_t *vdev_ops_table[] = {
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&vdev_root_ops,
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&vdev_raidz_ops,
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&vdev_draid_ops,
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&vdev_draid_spare_ops,
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&vdev_mirror_ops,
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&vdev_replacing_ops,
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&vdev_spare_ops,
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&vdev_disk_ops,
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&vdev_file_ops,
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&vdev_missing_ops,
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&vdev_hole_ops,
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&vdev_indirect_ops,
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NULL
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};
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/*
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* Given a vdev type, return the appropriate ops vector.
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*/
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static vdev_ops_t *
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vdev_getops(const char *type)
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{
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vdev_ops_t *ops, **opspp;
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for (opspp = vdev_ops_table; (ops = *opspp) != NULL; opspp++)
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if (strcmp(ops->vdev_op_type, type) == 0)
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break;
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return (ops);
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}
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/*
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* Given a vdev and a metaslab class, find which metaslab group we're
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* interested in. All vdevs may belong to two different metaslab classes.
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* Dedicated slog devices use only the primary metaslab group, rather than a
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* separate log group. For embedded slogs, the vdev_log_mg will be non-NULL.
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*/
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metaslab_group_t *
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vdev_get_mg(vdev_t *vd, metaslab_class_t *mc)
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{
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if (mc == spa_embedded_log_class(vd->vdev_spa) &&
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vd->vdev_log_mg != NULL)
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return (vd->vdev_log_mg);
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else
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return (vd->vdev_mg);
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}
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void
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vdev_default_xlate(vdev_t *vd, const range_seg64_t *logical_rs,
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range_seg64_t *physical_rs, range_seg64_t *remain_rs)
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{
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(void) vd, (void) remain_rs;
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physical_rs->rs_start = logical_rs->rs_start;
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physical_rs->rs_end = logical_rs->rs_end;
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}
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/*
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* Derive the enumerated allocation bias from string input.
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* String origin is either the per-vdev zap or zpool(8).
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*/
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static vdev_alloc_bias_t
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vdev_derive_alloc_bias(const char *bias)
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{
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vdev_alloc_bias_t alloc_bias = VDEV_BIAS_NONE;
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if (strcmp(bias, VDEV_ALLOC_BIAS_LOG) == 0)
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alloc_bias = VDEV_BIAS_LOG;
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else if (strcmp(bias, VDEV_ALLOC_BIAS_SPECIAL) == 0)
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alloc_bias = VDEV_BIAS_SPECIAL;
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else if (strcmp(bias, VDEV_ALLOC_BIAS_DEDUP) == 0)
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alloc_bias = VDEV_BIAS_DEDUP;
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return (alloc_bias);
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}
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/*
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* Default asize function: return the MAX of psize with the asize of
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* all children. This is what's used by anything other than RAID-Z.
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*/
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uint64_t
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vdev_default_asize(vdev_t *vd, uint64_t psize)
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{
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uint64_t asize = P2ROUNDUP(psize, 1ULL << vd->vdev_top->vdev_ashift);
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uint64_t csize;
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for (int c = 0; c < vd->vdev_children; c++) {
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csize = vdev_psize_to_asize(vd->vdev_child[c], psize);
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asize = MAX(asize, csize);
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}
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return (asize);
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}
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uint64_t
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vdev_default_min_asize(vdev_t *vd)
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{
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return (vd->vdev_min_asize);
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}
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/*
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* Get the minimum allocatable size. We define the allocatable size as
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* the vdev's asize rounded to the nearest metaslab. This allows us to
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* replace or attach devices which don't have the same physical size but
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* can still satisfy the same number of allocations.
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*/
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uint64_t
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vdev_get_min_asize(vdev_t *vd)
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{
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vdev_t *pvd = vd->vdev_parent;
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/*
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* If our parent is NULL (inactive spare or cache) or is the root,
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* just return our own asize.
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*/
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if (pvd == NULL)
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return (vd->vdev_asize);
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/*
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* The top-level vdev just returns the allocatable size rounded
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* to the nearest metaslab.
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*/
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if (vd == vd->vdev_top)
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return (P2ALIGN(vd->vdev_asize, 1ULL << vd->vdev_ms_shift));
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return (pvd->vdev_ops->vdev_op_min_asize(pvd));
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}
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void
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vdev_set_min_asize(vdev_t *vd)
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{
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vd->vdev_min_asize = vdev_get_min_asize(vd);
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for (int c = 0; c < vd->vdev_children; c++)
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vdev_set_min_asize(vd->vdev_child[c]);
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}
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/*
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* Get the minimal allocation size for the top-level vdev.
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*/
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uint64_t
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vdev_get_min_alloc(vdev_t *vd)
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{
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uint64_t min_alloc = 1ULL << vd->vdev_ashift;
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if (vd->vdev_ops->vdev_op_min_alloc != NULL)
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min_alloc = vd->vdev_ops->vdev_op_min_alloc(vd);
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return (min_alloc);
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}
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/*
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* Get the parity level for a top-level vdev.
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*/
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uint64_t
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vdev_get_nparity(vdev_t *vd)
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{
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uint64_t nparity = 0;
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if (vd->vdev_ops->vdev_op_nparity != NULL)
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nparity = vd->vdev_ops->vdev_op_nparity(vd);
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return (nparity);
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}
|
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|
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/*
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* Get the number of data disks for a top-level vdev.
|
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*/
|
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uint64_t
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vdev_get_ndisks(vdev_t *vd)
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{
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uint64_t ndisks = 1;
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if (vd->vdev_ops->vdev_op_ndisks != NULL)
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ndisks = vd->vdev_ops->vdev_op_ndisks(vd);
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return (ndisks);
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}
|
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vdev_t *
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vdev_lookup_top(spa_t *spa, uint64_t vdev)
|
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{
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vdev_t *rvd = spa->spa_root_vdev;
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|
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ASSERT(spa_config_held(spa, SCL_ALL, RW_READER) != 0);
|
|
|
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if (vdev < rvd->vdev_children) {
|
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ASSERT(rvd->vdev_child[vdev] != NULL);
|
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return (rvd->vdev_child[vdev]);
|
|
}
|
|
|
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return (NULL);
|
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}
|
|
|
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vdev_t *
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vdev_lookup_by_guid(vdev_t *vd, uint64_t guid)
|
|
{
|
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vdev_t *mvd;
|
|
|
|
if (vd->vdev_guid == guid)
|
|
return (vd);
|
|
|
|
for (int c = 0; c < vd->vdev_children; c++)
|
|
if ((mvd = vdev_lookup_by_guid(vd->vdev_child[c], guid)) !=
|
|
NULL)
|
|
return (mvd);
|
|
|
|
return (NULL);
|
|
}
|
|
|
|
static int
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vdev_count_leaves_impl(vdev_t *vd)
|
|
{
|
|
int n = 0;
|
|
|
|
if (vd->vdev_ops->vdev_op_leaf)
|
|
return (1);
|
|
|
|
for (int c = 0; c < vd->vdev_children; c++)
|
|
n += vdev_count_leaves_impl(vd->vdev_child[c]);
|
|
|
|
return (n);
|
|
}
|
|
|
|
int
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vdev_count_leaves(spa_t *spa)
|
|
{
|
|
int rc;
|
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spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
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rc = vdev_count_leaves_impl(spa->spa_root_vdev);
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spa_config_exit(spa, SCL_VDEV, FTAG);
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return (rc);
|
|
}
|
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|
|
void
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vdev_add_child(vdev_t *pvd, vdev_t *cvd)
|
|
{
|
|
size_t oldsize, newsize;
|
|
uint64_t id = cvd->vdev_id;
|
|
vdev_t **newchild;
|
|
|
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ASSERT(spa_config_held(cvd->vdev_spa, SCL_ALL, RW_WRITER) == SCL_ALL);
|
|
ASSERT(cvd->vdev_parent == NULL);
|
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cvd->vdev_parent = pvd;
|
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|
|
if (pvd == NULL)
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|
return;
|
|
|
|
ASSERT(id >= pvd->vdev_children || pvd->vdev_child[id] == NULL);
|
|
|
|
oldsize = pvd->vdev_children * sizeof (vdev_t *);
|
|
pvd->vdev_children = MAX(pvd->vdev_children, id + 1);
|
|
newsize = pvd->vdev_children * sizeof (vdev_t *);
|
|
|
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newchild = kmem_alloc(newsize, KM_SLEEP);
|
|
if (pvd->vdev_child != NULL) {
|
|
bcopy(pvd->vdev_child, newchild, oldsize);
|
|
kmem_free(pvd->vdev_child, oldsize);
|
|
}
|
|
|
|
pvd->vdev_child = newchild;
|
|
pvd->vdev_child[id] = cvd;
|
|
|
|
cvd->vdev_top = (pvd->vdev_top ? pvd->vdev_top: cvd);
|
|
ASSERT(cvd->vdev_top->vdev_parent->vdev_parent == NULL);
|
|
|
|
/*
|
|
* Walk up all ancestors to update guid sum.
|
|
*/
|
|
for (; pvd != NULL; pvd = pvd->vdev_parent)
|
|
pvd->vdev_guid_sum += cvd->vdev_guid_sum;
|
|
|
|
if (cvd->vdev_ops->vdev_op_leaf) {
|
|
list_insert_head(&cvd->vdev_spa->spa_leaf_list, cvd);
|
|
cvd->vdev_spa->spa_leaf_list_gen++;
|
|
}
|
|
}
|
|
|
|
void
|
|
vdev_remove_child(vdev_t *pvd, vdev_t *cvd)
|
|
{
|
|
int c;
|
|
uint_t id = cvd->vdev_id;
|
|
|
|
ASSERT(cvd->vdev_parent == pvd);
|
|
|
|
if (pvd == NULL)
|
|
return;
|
|
|
|
ASSERT(id < pvd->vdev_children);
|
|
ASSERT(pvd->vdev_child[id] == cvd);
|
|
|
|
pvd->vdev_child[id] = NULL;
|
|
cvd->vdev_parent = NULL;
|
|
|
|
for (c = 0; c < pvd->vdev_children; c++)
|
|
if (pvd->vdev_child[c])
|
|
break;
|
|
|
|
if (c == pvd->vdev_children) {
|
|
kmem_free(pvd->vdev_child, c * sizeof (vdev_t *));
|
|
pvd->vdev_child = NULL;
|
|
pvd->vdev_children = 0;
|
|
}
|
|
|
|
if (cvd->vdev_ops->vdev_op_leaf) {
|
|
spa_t *spa = cvd->vdev_spa;
|
|
list_remove(&spa->spa_leaf_list, cvd);
|
|
spa->spa_leaf_list_gen++;
|
|
}
|
|
|
|
/*
|
|
* Walk up all ancestors to update guid sum.
|
|
*/
|
|
for (; pvd != NULL; pvd = pvd->vdev_parent)
|
|
pvd->vdev_guid_sum -= cvd->vdev_guid_sum;
|
|
}
|
|
|
|
/*
|
|
* Remove any holes in the child array.
|
|
*/
|
|
void
|
|
vdev_compact_children(vdev_t *pvd)
|
|
{
|
|
vdev_t **newchild, *cvd;
|
|
int oldc = pvd->vdev_children;
|
|
int newc;
|
|
|
|
ASSERT(spa_config_held(pvd->vdev_spa, SCL_ALL, RW_WRITER) == SCL_ALL);
|
|
|
|
if (oldc == 0)
|
|
return;
|
|
|
|
for (int c = newc = 0; c < oldc; c++)
|
|
if (pvd->vdev_child[c])
|
|
newc++;
|
|
|
|
if (newc > 0) {
|
|
newchild = kmem_zalloc(newc * sizeof (vdev_t *), KM_SLEEP);
|
|
|
|
for (int c = newc = 0; c < oldc; c++) {
|
|
if ((cvd = pvd->vdev_child[c]) != NULL) {
|
|
newchild[newc] = cvd;
|
|
cvd->vdev_id = newc++;
|
|
}
|
|
}
|
|
} else {
|
|
newchild = NULL;
|
|
}
|
|
|
|
kmem_free(pvd->vdev_child, oldc * sizeof (vdev_t *));
|
|
pvd->vdev_child = newchild;
|
|
pvd->vdev_children = newc;
|
|
}
|
|
|
|
/*
|
|
* Allocate and minimally initialize a vdev_t.
|
|
*/
|
|
vdev_t *
|
|
vdev_alloc_common(spa_t *spa, uint_t id, uint64_t guid, vdev_ops_t *ops)
|
|
{
|
|
vdev_t *vd;
|
|
vdev_indirect_config_t *vic;
|
|
|
|
vd = kmem_zalloc(sizeof (vdev_t), KM_SLEEP);
|
|
vic = &vd->vdev_indirect_config;
|
|
|
|
if (spa->spa_root_vdev == NULL) {
|
|
ASSERT(ops == &vdev_root_ops);
|
|
spa->spa_root_vdev = vd;
|
|
spa->spa_load_guid = spa_generate_guid(NULL);
|
|
}
|
|
|
|
if (guid == 0 && ops != &vdev_hole_ops) {
|
|
if (spa->spa_root_vdev == vd) {
|
|
/*
|
|
* The root vdev's guid will also be the pool guid,
|
|
* which must be unique among all pools.
|
|
*/
|
|
guid = spa_generate_guid(NULL);
|
|
} else {
|
|
/*
|
|
* Any other vdev's guid must be unique within the pool.
|
|
*/
|
|
guid = spa_generate_guid(spa);
|
|
}
|
|
ASSERT(!spa_guid_exists(spa_guid(spa), guid));
|
|
}
|
|
|
|
vd->vdev_spa = spa;
|
|
vd->vdev_id = id;
|
|
vd->vdev_guid = guid;
|
|
vd->vdev_guid_sum = guid;
|
|
vd->vdev_ops = ops;
|
|
vd->vdev_state = VDEV_STATE_CLOSED;
|
|
vd->vdev_ishole = (ops == &vdev_hole_ops);
|
|
vic->vic_prev_indirect_vdev = UINT64_MAX;
|
|
|
|
rw_init(&vd->vdev_indirect_rwlock, NULL, RW_DEFAULT, NULL);
|
|
mutex_init(&vd->vdev_obsolete_lock, NULL, MUTEX_DEFAULT, NULL);
|
|
vd->vdev_obsolete_segments = range_tree_create(NULL, RANGE_SEG64, NULL,
|
|
0, 0);
|
|
|
|
/*
|
|
* Initialize rate limit structs for events. We rate limit ZIO delay
|
|
* and checksum events so that we don't overwhelm ZED with thousands
|
|
* of events when a disk is acting up.
|
|
*/
|
|
zfs_ratelimit_init(&vd->vdev_delay_rl, &zfs_slow_io_events_per_second,
|
|
1);
|
|
zfs_ratelimit_init(&vd->vdev_deadman_rl, &zfs_slow_io_events_per_second,
|
|
1);
|
|
zfs_ratelimit_init(&vd->vdev_checksum_rl,
|
|
&zfs_checksum_events_per_second, 1);
|
|
|
|
list_link_init(&vd->vdev_config_dirty_node);
|
|
list_link_init(&vd->vdev_state_dirty_node);
|
|
list_link_init(&vd->vdev_initialize_node);
|
|
list_link_init(&vd->vdev_leaf_node);
|
|
list_link_init(&vd->vdev_trim_node);
|
|
|
|
mutex_init(&vd->vdev_dtl_lock, NULL, MUTEX_NOLOCKDEP, NULL);
|
|
mutex_init(&vd->vdev_stat_lock, NULL, MUTEX_DEFAULT, NULL);
|
|
mutex_init(&vd->vdev_probe_lock, NULL, MUTEX_DEFAULT, NULL);
|
|
mutex_init(&vd->vdev_scan_io_queue_lock, NULL, MUTEX_DEFAULT, NULL);
|
|
|
|
mutex_init(&vd->vdev_initialize_lock, NULL, MUTEX_DEFAULT, NULL);
|
|
mutex_init(&vd->vdev_initialize_io_lock, NULL, MUTEX_DEFAULT, NULL);
|
|
cv_init(&vd->vdev_initialize_cv, NULL, CV_DEFAULT, NULL);
|
|
cv_init(&vd->vdev_initialize_io_cv, NULL, CV_DEFAULT, NULL);
|
|
|
|
mutex_init(&vd->vdev_trim_lock, NULL, MUTEX_DEFAULT, NULL);
|
|
mutex_init(&vd->vdev_autotrim_lock, NULL, MUTEX_DEFAULT, NULL);
|
|
mutex_init(&vd->vdev_trim_io_lock, NULL, MUTEX_DEFAULT, NULL);
|
|
cv_init(&vd->vdev_trim_cv, NULL, CV_DEFAULT, NULL);
|
|
cv_init(&vd->vdev_autotrim_cv, NULL, CV_DEFAULT, NULL);
|
|
cv_init(&vd->vdev_trim_io_cv, NULL, CV_DEFAULT, NULL);
|
|
|
|
mutex_init(&vd->vdev_rebuild_lock, NULL, MUTEX_DEFAULT, NULL);
|
|
cv_init(&vd->vdev_rebuild_cv, NULL, CV_DEFAULT, NULL);
|
|
|
|
for (int t = 0; t < DTL_TYPES; t++) {
|
|
vd->vdev_dtl[t] = range_tree_create(NULL, RANGE_SEG64, NULL, 0,
|
|
0);
|
|
}
|
|
|
|
txg_list_create(&vd->vdev_ms_list, spa,
|
|
offsetof(struct metaslab, ms_txg_node));
|
|
txg_list_create(&vd->vdev_dtl_list, spa,
|
|
offsetof(struct vdev, vdev_dtl_node));
|
|
vd->vdev_stat.vs_timestamp = gethrtime();
|
|
vdev_queue_init(vd);
|
|
vdev_cache_init(vd);
|
|
|
|
return (vd);
|
|
}
|
|
|
|
/*
|
|
* Allocate a new vdev. The 'alloctype' is used to control whether we are
|
|
* creating a new vdev or loading an existing one - the behavior is slightly
|
|
* different for each case.
|
|
*/
|
|
int
|
|
vdev_alloc(spa_t *spa, vdev_t **vdp, nvlist_t *nv, vdev_t *parent, uint_t id,
|
|
int alloctype)
|
|
{
|
|
vdev_ops_t *ops;
|
|
char *type;
|
|
uint64_t guid = 0, islog;
|
|
vdev_t *vd;
|
|
vdev_indirect_config_t *vic;
|
|
char *tmp = NULL;
|
|
int rc;
|
|
vdev_alloc_bias_t alloc_bias = VDEV_BIAS_NONE;
|
|
boolean_t top_level = (parent && !parent->vdev_parent);
|
|
|
|
ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL);
|
|
|
|
if (nvlist_lookup_string(nv, ZPOOL_CONFIG_TYPE, &type) != 0)
|
|
return (SET_ERROR(EINVAL));
|
|
|
|
if ((ops = vdev_getops(type)) == NULL)
|
|
return (SET_ERROR(EINVAL));
|
|
|
|
/*
|
|
* If this is a load, get the vdev guid from the nvlist.
|
|
* Otherwise, vdev_alloc_common() will generate one for us.
|
|
*/
|
|
if (alloctype == VDEV_ALLOC_LOAD) {
|
|
uint64_t label_id;
|
|
|
|
if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_ID, &label_id) ||
|
|
label_id != id)
|
|
return (SET_ERROR(EINVAL));
|
|
|
|
if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, &guid) != 0)
|
|
return (SET_ERROR(EINVAL));
|
|
} else if (alloctype == VDEV_ALLOC_SPARE) {
|
|
if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, &guid) != 0)
|
|
return (SET_ERROR(EINVAL));
|
|
} else if (alloctype == VDEV_ALLOC_L2CACHE) {
|
|
if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, &guid) != 0)
|
|
return (SET_ERROR(EINVAL));
|
|
} else if (alloctype == VDEV_ALLOC_ROOTPOOL) {
|
|
if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, &guid) != 0)
|
|
return (SET_ERROR(EINVAL));
|
|
}
|
|
|
|
/*
|
|
* The first allocated vdev must be of type 'root'.
|
|
*/
|
|
if (ops != &vdev_root_ops && spa->spa_root_vdev == NULL)
|
|
return (SET_ERROR(EINVAL));
|
|
|
|
/*
|
|
* Determine whether we're a log vdev.
|
|
*/
|
|
islog = 0;
|
|
(void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_LOG, &islog);
|
|
if (islog && spa_version(spa) < SPA_VERSION_SLOGS)
|
|
return (SET_ERROR(ENOTSUP));
|
|
|
|
if (ops == &vdev_hole_ops && spa_version(spa) < SPA_VERSION_HOLES)
|
|
return (SET_ERROR(ENOTSUP));
|
|
|
|
if (top_level && alloctype == VDEV_ALLOC_ADD) {
|
|
char *bias;
|
|
|
|
/*
|
|
* If creating a top-level vdev, check for allocation
|
|
* classes input.
|
|
*/
|
|
if (nvlist_lookup_string(nv, ZPOOL_CONFIG_ALLOCATION_BIAS,
|
|
&bias) == 0) {
|
|
alloc_bias = vdev_derive_alloc_bias(bias);
|
|
|
|
/* spa_vdev_add() expects feature to be enabled */
|
|
if (spa->spa_load_state != SPA_LOAD_CREATE &&
|
|
!spa_feature_is_enabled(spa,
|
|
SPA_FEATURE_ALLOCATION_CLASSES)) {
|
|
return (SET_ERROR(ENOTSUP));
|
|
}
|
|
}
|
|
|
|
/* spa_vdev_add() expects feature to be enabled */
|
|
if (ops == &vdev_draid_ops &&
|
|
spa->spa_load_state != SPA_LOAD_CREATE &&
|
|
!spa_feature_is_enabled(spa, SPA_FEATURE_DRAID)) {
|
|
return (SET_ERROR(ENOTSUP));
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Initialize the vdev specific data. This is done before calling
|
|
* vdev_alloc_common() since it may fail and this simplifies the
|
|
* error reporting and cleanup code paths.
|
|
*/
|
|
void *tsd = NULL;
|
|
if (ops->vdev_op_init != NULL) {
|
|
rc = ops->vdev_op_init(spa, nv, &tsd);
|
|
if (rc != 0) {
|
|
return (rc);
|
|
}
|
|
}
|
|
|
|
vd = vdev_alloc_common(spa, id, guid, ops);
|
|
vd->vdev_tsd = tsd;
|
|
vd->vdev_islog = islog;
|
|
|
|
if (top_level && alloc_bias != VDEV_BIAS_NONE)
|
|
vd->vdev_alloc_bias = alloc_bias;
|
|
|
|
if (nvlist_lookup_string(nv, ZPOOL_CONFIG_PATH, &vd->vdev_path) == 0)
|
|
vd->vdev_path = spa_strdup(vd->vdev_path);
|
|
|
|
/*
|
|
* ZPOOL_CONFIG_AUX_STATE = "external" means we previously forced a
|
|
* fault on a vdev and want it to persist across imports (like with
|
|
* zpool offline -f).
|
|
*/
|
|
rc = nvlist_lookup_string(nv, ZPOOL_CONFIG_AUX_STATE, &tmp);
|
|
if (rc == 0 && tmp != NULL && strcmp(tmp, "external") == 0) {
|
|
vd->vdev_stat.vs_aux = VDEV_AUX_EXTERNAL;
|
|
vd->vdev_faulted = 1;
|
|
vd->vdev_label_aux = VDEV_AUX_EXTERNAL;
|
|
}
|
|
|
|
if (nvlist_lookup_string(nv, ZPOOL_CONFIG_DEVID, &vd->vdev_devid) == 0)
|
|
vd->vdev_devid = spa_strdup(vd->vdev_devid);
|
|
if (nvlist_lookup_string(nv, ZPOOL_CONFIG_PHYS_PATH,
|
|
&vd->vdev_physpath) == 0)
|
|
vd->vdev_physpath = spa_strdup(vd->vdev_physpath);
|
|
|
|
if (nvlist_lookup_string(nv, ZPOOL_CONFIG_VDEV_ENC_SYSFS_PATH,
|
|
&vd->vdev_enc_sysfs_path) == 0)
|
|
vd->vdev_enc_sysfs_path = spa_strdup(vd->vdev_enc_sysfs_path);
|
|
|
|
if (nvlist_lookup_string(nv, ZPOOL_CONFIG_FRU, &vd->vdev_fru) == 0)
|
|
vd->vdev_fru = spa_strdup(vd->vdev_fru);
|
|
|
|
/*
|
|
* Set the whole_disk property. If it's not specified, leave the value
|
|
* as -1.
|
|
*/
|
|
if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_WHOLE_DISK,
|
|
&vd->vdev_wholedisk) != 0)
|
|
vd->vdev_wholedisk = -1ULL;
|
|
|
|
vic = &vd->vdev_indirect_config;
|
|
|
|
ASSERT0(vic->vic_mapping_object);
|
|
(void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_INDIRECT_OBJECT,
|
|
&vic->vic_mapping_object);
|
|
ASSERT0(vic->vic_births_object);
|
|
(void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_INDIRECT_BIRTHS,
|
|
&vic->vic_births_object);
|
|
ASSERT3U(vic->vic_prev_indirect_vdev, ==, UINT64_MAX);
|
|
(void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_PREV_INDIRECT_VDEV,
|
|
&vic->vic_prev_indirect_vdev);
|
|
|
|
/*
|
|
* Look for the 'not present' flag. This will only be set if the device
|
|
* was not present at the time of import.
|
|
*/
|
|
(void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_NOT_PRESENT,
|
|
&vd->vdev_not_present);
|
|
|
|
/*
|
|
* Get the alignment requirement.
|
|
*/
|
|
(void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_ASHIFT, &vd->vdev_ashift);
|
|
|
|
/*
|
|
* Retrieve the vdev creation time.
|
|
*/
|
|
(void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_CREATE_TXG,
|
|
&vd->vdev_crtxg);
|
|
|
|
/*
|
|
* If we're a top-level vdev, try to load the allocation parameters.
|
|
*/
|
|
if (top_level &&
|
|
(alloctype == VDEV_ALLOC_LOAD || alloctype == VDEV_ALLOC_SPLIT)) {
|
|
(void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_METASLAB_ARRAY,
|
|
&vd->vdev_ms_array);
|
|
(void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_METASLAB_SHIFT,
|
|
&vd->vdev_ms_shift);
|
|
(void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_ASIZE,
|
|
&vd->vdev_asize);
|
|
(void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_REMOVING,
|
|
&vd->vdev_removing);
|
|
(void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_VDEV_TOP_ZAP,
|
|
&vd->vdev_top_zap);
|
|
} else {
|
|
ASSERT0(vd->vdev_top_zap);
|
|
}
|
|
|
|
if (top_level && alloctype != VDEV_ALLOC_ATTACH) {
|
|
ASSERT(alloctype == VDEV_ALLOC_LOAD ||
|
|
alloctype == VDEV_ALLOC_ADD ||
|
|
alloctype == VDEV_ALLOC_SPLIT ||
|
|
alloctype == VDEV_ALLOC_ROOTPOOL);
|
|
/* Note: metaslab_group_create() is now deferred */
|
|
}
|
|
|
|
if (vd->vdev_ops->vdev_op_leaf &&
|
|
(alloctype == VDEV_ALLOC_LOAD || alloctype == VDEV_ALLOC_SPLIT)) {
|
|
(void) nvlist_lookup_uint64(nv,
|
|
ZPOOL_CONFIG_VDEV_LEAF_ZAP, &vd->vdev_leaf_zap);
|
|
} else {
|
|
ASSERT0(vd->vdev_leaf_zap);
|
|
}
|
|
|
|
/*
|
|
* If we're a leaf vdev, try to load the DTL object and other state.
|
|
*/
|
|
|
|
if (vd->vdev_ops->vdev_op_leaf &&
|
|
(alloctype == VDEV_ALLOC_LOAD || alloctype == VDEV_ALLOC_L2CACHE ||
|
|
alloctype == VDEV_ALLOC_ROOTPOOL)) {
|
|
if (alloctype == VDEV_ALLOC_LOAD) {
|
|
(void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_DTL,
|
|
&vd->vdev_dtl_object);
|
|
(void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_UNSPARE,
|
|
&vd->vdev_unspare);
|
|
}
|
|
|
|
if (alloctype == VDEV_ALLOC_ROOTPOOL) {
|
|
uint64_t spare = 0;
|
|
|
|
if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_SPARE,
|
|
&spare) == 0 && spare)
|
|
spa_spare_add(vd);
|
|
}
|
|
|
|
(void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_OFFLINE,
|
|
&vd->vdev_offline);
|
|
|
|
(void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_RESILVER_TXG,
|
|
&vd->vdev_resilver_txg);
|
|
|
|
(void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_REBUILD_TXG,
|
|
&vd->vdev_rebuild_txg);
|
|
|
|
if (nvlist_exists(nv, ZPOOL_CONFIG_RESILVER_DEFER))
|
|
vdev_defer_resilver(vd);
|
|
|
|
/*
|
|
* In general, when importing a pool we want to ignore the
|
|
* persistent fault state, as the diagnosis made on another
|
|
* system may not be valid in the current context. The only
|
|
* exception is if we forced a vdev to a persistently faulted
|
|
* state with 'zpool offline -f'. The persistent fault will
|
|
* remain across imports until cleared.
|
|
*
|
|
* Local vdevs will remain in the faulted state.
|
|
*/
|
|
if (spa_load_state(spa) == SPA_LOAD_OPEN ||
|
|
spa_load_state(spa) == SPA_LOAD_IMPORT) {
|
|
(void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_FAULTED,
|
|
&vd->vdev_faulted);
|
|
(void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_DEGRADED,
|
|
&vd->vdev_degraded);
|
|
(void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_REMOVED,
|
|
&vd->vdev_removed);
|
|
|
|
if (vd->vdev_faulted || vd->vdev_degraded) {
|
|
char *aux;
|
|
|
|
vd->vdev_label_aux =
|
|
VDEV_AUX_ERR_EXCEEDED;
|
|
if (nvlist_lookup_string(nv,
|
|
ZPOOL_CONFIG_AUX_STATE, &aux) == 0 &&
|
|
strcmp(aux, "external") == 0)
|
|
vd->vdev_label_aux = VDEV_AUX_EXTERNAL;
|
|
else
|
|
vd->vdev_faulted = 0ULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Add ourselves to the parent's list of children.
|
|
*/
|
|
vdev_add_child(parent, vd);
|
|
|
|
*vdp = vd;
|
|
|
|
return (0);
|
|
}
|
|
|
|
void
|
|
vdev_free(vdev_t *vd)
|
|
{
|
|
spa_t *spa = vd->vdev_spa;
|
|
|
|
ASSERT3P(vd->vdev_initialize_thread, ==, NULL);
|
|
ASSERT3P(vd->vdev_trim_thread, ==, NULL);
|
|
ASSERT3P(vd->vdev_autotrim_thread, ==, NULL);
|
|
ASSERT3P(vd->vdev_rebuild_thread, ==, NULL);
|
|
|
|
/*
|
|
* Scan queues are normally destroyed at the end of a scan. If the
|
|
* queue exists here, that implies the vdev is being removed while
|
|
* the scan is still running.
|
|
*/
|
|
if (vd->vdev_scan_io_queue != NULL) {
|
|
mutex_enter(&vd->vdev_scan_io_queue_lock);
|
|
dsl_scan_io_queue_destroy(vd->vdev_scan_io_queue);
|
|
vd->vdev_scan_io_queue = NULL;
|
|
mutex_exit(&vd->vdev_scan_io_queue_lock);
|
|
}
|
|
|
|
/*
|
|
* vdev_free() implies closing the vdev first. This is simpler than
|
|
* trying to ensure complicated semantics for all callers.
|
|
*/
|
|
vdev_close(vd);
|
|
|
|
ASSERT(!list_link_active(&vd->vdev_config_dirty_node));
|
|
ASSERT(!list_link_active(&vd->vdev_state_dirty_node));
|
|
|
|
/*
|
|
* Free all children.
|
|
*/
|
|
for (int c = 0; c < vd->vdev_children; c++)
|
|
vdev_free(vd->vdev_child[c]);
|
|
|
|
ASSERT(vd->vdev_child == NULL);
|
|
ASSERT(vd->vdev_guid_sum == vd->vdev_guid);
|
|
|
|
if (vd->vdev_ops->vdev_op_fini != NULL)
|
|
vd->vdev_ops->vdev_op_fini(vd);
|
|
|
|
/*
|
|
* Discard allocation state.
|
|
*/
|
|
if (vd->vdev_mg != NULL) {
|
|
vdev_metaslab_fini(vd);
|
|
metaslab_group_destroy(vd->vdev_mg);
|
|
vd->vdev_mg = NULL;
|
|
}
|
|
if (vd->vdev_log_mg != NULL) {
|
|
ASSERT0(vd->vdev_ms_count);
|
|
metaslab_group_destroy(vd->vdev_log_mg);
|
|
vd->vdev_log_mg = NULL;
|
|
}
|
|
|
|
ASSERT0(vd->vdev_stat.vs_space);
|
|
ASSERT0(vd->vdev_stat.vs_dspace);
|
|
ASSERT0(vd->vdev_stat.vs_alloc);
|
|
|
|
/*
|
|
* Remove this vdev from its parent's child list.
|
|
*/
|
|
vdev_remove_child(vd->vdev_parent, vd);
|
|
|
|
ASSERT(vd->vdev_parent == NULL);
|
|
ASSERT(!list_link_active(&vd->vdev_leaf_node));
|
|
|
|
/*
|
|
* Clean up vdev structure.
|
|
*/
|
|
vdev_queue_fini(vd);
|
|
vdev_cache_fini(vd);
|
|
|
|
if (vd->vdev_path)
|
|
spa_strfree(vd->vdev_path);
|
|
if (vd->vdev_devid)
|
|
spa_strfree(vd->vdev_devid);
|
|
if (vd->vdev_physpath)
|
|
spa_strfree(vd->vdev_physpath);
|
|
|
|
if (vd->vdev_enc_sysfs_path)
|
|
spa_strfree(vd->vdev_enc_sysfs_path);
|
|
|
|
if (vd->vdev_fru)
|
|
spa_strfree(vd->vdev_fru);
|
|
|
|
if (vd->vdev_isspare)
|
|
spa_spare_remove(vd);
|
|
if (vd->vdev_isl2cache)
|
|
spa_l2cache_remove(vd);
|
|
|
|
txg_list_destroy(&vd->vdev_ms_list);
|
|
txg_list_destroy(&vd->vdev_dtl_list);
|
|
|
|
mutex_enter(&vd->vdev_dtl_lock);
|
|
space_map_close(vd->vdev_dtl_sm);
|
|
for (int t = 0; t < DTL_TYPES; t++) {
|
|
range_tree_vacate(vd->vdev_dtl[t], NULL, NULL);
|
|
range_tree_destroy(vd->vdev_dtl[t]);
|
|
}
|
|
mutex_exit(&vd->vdev_dtl_lock);
|
|
|
|
EQUIV(vd->vdev_indirect_births != NULL,
|
|
vd->vdev_indirect_mapping != NULL);
|
|
if (vd->vdev_indirect_births != NULL) {
|
|
vdev_indirect_mapping_close(vd->vdev_indirect_mapping);
|
|
vdev_indirect_births_close(vd->vdev_indirect_births);
|
|
}
|
|
|
|
if (vd->vdev_obsolete_sm != NULL) {
|
|
ASSERT(vd->vdev_removing ||
|
|
vd->vdev_ops == &vdev_indirect_ops);
|
|
space_map_close(vd->vdev_obsolete_sm);
|
|
vd->vdev_obsolete_sm = NULL;
|
|
}
|
|
range_tree_destroy(vd->vdev_obsolete_segments);
|
|
rw_destroy(&vd->vdev_indirect_rwlock);
|
|
mutex_destroy(&vd->vdev_obsolete_lock);
|
|
|
|
mutex_destroy(&vd->vdev_dtl_lock);
|
|
mutex_destroy(&vd->vdev_stat_lock);
|
|
mutex_destroy(&vd->vdev_probe_lock);
|
|
mutex_destroy(&vd->vdev_scan_io_queue_lock);
|
|
|
|
mutex_destroy(&vd->vdev_initialize_lock);
|
|
mutex_destroy(&vd->vdev_initialize_io_lock);
|
|
cv_destroy(&vd->vdev_initialize_io_cv);
|
|
cv_destroy(&vd->vdev_initialize_cv);
|
|
|
|
mutex_destroy(&vd->vdev_trim_lock);
|
|
mutex_destroy(&vd->vdev_autotrim_lock);
|
|
mutex_destroy(&vd->vdev_trim_io_lock);
|
|
cv_destroy(&vd->vdev_trim_cv);
|
|
cv_destroy(&vd->vdev_autotrim_cv);
|
|
cv_destroy(&vd->vdev_trim_io_cv);
|
|
|
|
mutex_destroy(&vd->vdev_rebuild_lock);
|
|
cv_destroy(&vd->vdev_rebuild_cv);
|
|
|
|
zfs_ratelimit_fini(&vd->vdev_delay_rl);
|
|
zfs_ratelimit_fini(&vd->vdev_deadman_rl);
|
|
zfs_ratelimit_fini(&vd->vdev_checksum_rl);
|
|
|
|
if (vd == spa->spa_root_vdev)
|
|
spa->spa_root_vdev = NULL;
|
|
|
|
kmem_free(vd, sizeof (vdev_t));
|
|
}
|
|
|
|
/*
|
|
* Transfer top-level vdev state from svd to tvd.
|
|
*/
|
|
static void
|
|
vdev_top_transfer(vdev_t *svd, vdev_t *tvd)
|
|
{
|
|
spa_t *spa = svd->vdev_spa;
|
|
metaslab_t *msp;
|
|
vdev_t *vd;
|
|
int t;
|
|
|
|
ASSERT(tvd == tvd->vdev_top);
|
|
|
|
tvd->vdev_pending_fastwrite = svd->vdev_pending_fastwrite;
|
|
tvd->vdev_ms_array = svd->vdev_ms_array;
|
|
tvd->vdev_ms_shift = svd->vdev_ms_shift;
|
|
tvd->vdev_ms_count = svd->vdev_ms_count;
|
|
tvd->vdev_top_zap = svd->vdev_top_zap;
|
|
|
|
svd->vdev_ms_array = 0;
|
|
svd->vdev_ms_shift = 0;
|
|
svd->vdev_ms_count = 0;
|
|
svd->vdev_top_zap = 0;
|
|
|
|
if (tvd->vdev_mg)
|
|
ASSERT3P(tvd->vdev_mg, ==, svd->vdev_mg);
|
|
if (tvd->vdev_log_mg)
|
|
ASSERT3P(tvd->vdev_log_mg, ==, svd->vdev_log_mg);
|
|
tvd->vdev_mg = svd->vdev_mg;
|
|
tvd->vdev_log_mg = svd->vdev_log_mg;
|
|
tvd->vdev_ms = svd->vdev_ms;
|
|
|
|
svd->vdev_mg = NULL;
|
|
svd->vdev_log_mg = NULL;
|
|
svd->vdev_ms = NULL;
|
|
|
|
if (tvd->vdev_mg != NULL)
|
|
tvd->vdev_mg->mg_vd = tvd;
|
|
if (tvd->vdev_log_mg != NULL)
|
|
tvd->vdev_log_mg->mg_vd = tvd;
|
|
|
|
tvd->vdev_checkpoint_sm = svd->vdev_checkpoint_sm;
|
|
svd->vdev_checkpoint_sm = NULL;
|
|
|
|
tvd->vdev_alloc_bias = svd->vdev_alloc_bias;
|
|
svd->vdev_alloc_bias = VDEV_BIAS_NONE;
|
|
|
|
tvd->vdev_stat.vs_alloc = svd->vdev_stat.vs_alloc;
|
|
tvd->vdev_stat.vs_space = svd->vdev_stat.vs_space;
|
|
tvd->vdev_stat.vs_dspace = svd->vdev_stat.vs_dspace;
|
|
|
|
svd->vdev_stat.vs_alloc = 0;
|
|
svd->vdev_stat.vs_space = 0;
|
|
svd->vdev_stat.vs_dspace = 0;
|
|
|
|
/*
|
|
* State which may be set on a top-level vdev that's in the
|
|
* process of being removed.
|
|
*/
|
|
ASSERT0(tvd->vdev_indirect_config.vic_births_object);
|
|
ASSERT0(tvd->vdev_indirect_config.vic_mapping_object);
|
|
ASSERT3U(tvd->vdev_indirect_config.vic_prev_indirect_vdev, ==, -1ULL);
|
|
ASSERT3P(tvd->vdev_indirect_mapping, ==, NULL);
|
|
ASSERT3P(tvd->vdev_indirect_births, ==, NULL);
|
|
ASSERT3P(tvd->vdev_obsolete_sm, ==, NULL);
|
|
ASSERT0(tvd->vdev_removing);
|
|
ASSERT0(tvd->vdev_rebuilding);
|
|
tvd->vdev_removing = svd->vdev_removing;
|
|
tvd->vdev_rebuilding = svd->vdev_rebuilding;
|
|
tvd->vdev_rebuild_config = svd->vdev_rebuild_config;
|
|
tvd->vdev_indirect_config = svd->vdev_indirect_config;
|
|
tvd->vdev_indirect_mapping = svd->vdev_indirect_mapping;
|
|
tvd->vdev_indirect_births = svd->vdev_indirect_births;
|
|
range_tree_swap(&svd->vdev_obsolete_segments,
|
|
&tvd->vdev_obsolete_segments);
|
|
tvd->vdev_obsolete_sm = svd->vdev_obsolete_sm;
|
|
svd->vdev_indirect_config.vic_mapping_object = 0;
|
|
svd->vdev_indirect_config.vic_births_object = 0;
|
|
svd->vdev_indirect_config.vic_prev_indirect_vdev = -1ULL;
|
|
svd->vdev_indirect_mapping = NULL;
|
|
svd->vdev_indirect_births = NULL;
|
|
svd->vdev_obsolete_sm = NULL;
|
|
svd->vdev_removing = 0;
|
|
svd->vdev_rebuilding = 0;
|
|
|
|
for (t = 0; t < TXG_SIZE; t++) {
|
|
while ((msp = txg_list_remove(&svd->vdev_ms_list, t)) != NULL)
|
|
(void) txg_list_add(&tvd->vdev_ms_list, msp, t);
|
|
while ((vd = txg_list_remove(&svd->vdev_dtl_list, t)) != NULL)
|
|
(void) txg_list_add(&tvd->vdev_dtl_list, vd, t);
|
|
if (txg_list_remove_this(&spa->spa_vdev_txg_list, svd, t))
|
|
(void) txg_list_add(&spa->spa_vdev_txg_list, tvd, t);
|
|
}
|
|
|
|
if (list_link_active(&svd->vdev_config_dirty_node)) {
|
|
vdev_config_clean(svd);
|
|
vdev_config_dirty(tvd);
|
|
}
|
|
|
|
if (list_link_active(&svd->vdev_state_dirty_node)) {
|
|
vdev_state_clean(svd);
|
|
vdev_state_dirty(tvd);
|
|
}
|
|
|
|
tvd->vdev_deflate_ratio = svd->vdev_deflate_ratio;
|
|
svd->vdev_deflate_ratio = 0;
|
|
|
|
tvd->vdev_islog = svd->vdev_islog;
|
|
svd->vdev_islog = 0;
|
|
|
|
dsl_scan_io_queue_vdev_xfer(svd, tvd);
|
|
}
|
|
|
|
static void
|
|
vdev_top_update(vdev_t *tvd, vdev_t *vd)
|
|
{
|
|
if (vd == NULL)
|
|
return;
|
|
|
|
vd->vdev_top = tvd;
|
|
|
|
for (int c = 0; c < vd->vdev_children; c++)
|
|
vdev_top_update(tvd, vd->vdev_child[c]);
|
|
}
|
|
|
|
/*
|
|
* Add a mirror/replacing vdev above an existing vdev. There is no need to
|
|
* call .vdev_op_init() since mirror/replacing vdevs do not have private state.
|
|
*/
|
|
vdev_t *
|
|
vdev_add_parent(vdev_t *cvd, vdev_ops_t *ops)
|
|
{
|
|
spa_t *spa = cvd->vdev_spa;
|
|
vdev_t *pvd = cvd->vdev_parent;
|
|
vdev_t *mvd;
|
|
|
|
ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL);
|
|
|
|
mvd = vdev_alloc_common(spa, cvd->vdev_id, 0, ops);
|
|
|
|
mvd->vdev_asize = cvd->vdev_asize;
|
|
mvd->vdev_min_asize = cvd->vdev_min_asize;
|
|
mvd->vdev_max_asize = cvd->vdev_max_asize;
|
|
mvd->vdev_psize = cvd->vdev_psize;
|
|
mvd->vdev_ashift = cvd->vdev_ashift;
|
|
mvd->vdev_logical_ashift = cvd->vdev_logical_ashift;
|
|
mvd->vdev_physical_ashift = cvd->vdev_physical_ashift;
|
|
mvd->vdev_state = cvd->vdev_state;
|
|
mvd->vdev_crtxg = cvd->vdev_crtxg;
|
|
|
|
vdev_remove_child(pvd, cvd);
|
|
vdev_add_child(pvd, mvd);
|
|
cvd->vdev_id = mvd->vdev_children;
|
|
vdev_add_child(mvd, cvd);
|
|
vdev_top_update(cvd->vdev_top, cvd->vdev_top);
|
|
|
|
if (mvd == mvd->vdev_top)
|
|
vdev_top_transfer(cvd, mvd);
|
|
|
|
return (mvd);
|
|
}
|
|
|
|
/*
|
|
* Remove a 1-way mirror/replacing vdev from the tree.
|
|
*/
|
|
void
|
|
vdev_remove_parent(vdev_t *cvd)
|
|
{
|
|
vdev_t *mvd = cvd->vdev_parent;
|
|
vdev_t *pvd = mvd->vdev_parent;
|
|
|
|
ASSERT(spa_config_held(cvd->vdev_spa, SCL_ALL, RW_WRITER) == SCL_ALL);
|
|
|
|
ASSERT(mvd->vdev_children == 1);
|
|
ASSERT(mvd->vdev_ops == &vdev_mirror_ops ||
|
|
mvd->vdev_ops == &vdev_replacing_ops ||
|
|
mvd->vdev_ops == &vdev_spare_ops);
|
|
cvd->vdev_ashift = mvd->vdev_ashift;
|
|
cvd->vdev_logical_ashift = mvd->vdev_logical_ashift;
|
|
cvd->vdev_physical_ashift = mvd->vdev_physical_ashift;
|
|
vdev_remove_child(mvd, cvd);
|
|
vdev_remove_child(pvd, mvd);
|
|
|
|
/*
|
|
* If cvd will replace mvd as a top-level vdev, preserve mvd's guid.
|
|
* Otherwise, we could have detached an offline device, and when we
|
|
* go to import the pool we'll think we have two top-level vdevs,
|
|
* instead of a different version of the same top-level vdev.
|
|
*/
|
|
if (mvd->vdev_top == mvd) {
|
|
uint64_t guid_delta = mvd->vdev_guid - cvd->vdev_guid;
|
|
cvd->vdev_orig_guid = cvd->vdev_guid;
|
|
cvd->vdev_guid += guid_delta;
|
|
cvd->vdev_guid_sum += guid_delta;
|
|
|
|
/*
|
|
* If pool not set for autoexpand, we need to also preserve
|
|
* mvd's asize to prevent automatic expansion of cvd.
|
|
* Otherwise if we are adjusting the mirror by attaching and
|
|
* detaching children of non-uniform sizes, the mirror could
|
|
* autoexpand, unexpectedly requiring larger devices to
|
|
* re-establish the mirror.
|
|
*/
|
|
if (!cvd->vdev_spa->spa_autoexpand)
|
|
cvd->vdev_asize = mvd->vdev_asize;
|
|
}
|
|
cvd->vdev_id = mvd->vdev_id;
|
|
vdev_add_child(pvd, cvd);
|
|
vdev_top_update(cvd->vdev_top, cvd->vdev_top);
|
|
|
|
if (cvd == cvd->vdev_top)
|
|
vdev_top_transfer(mvd, cvd);
|
|
|
|
ASSERT(mvd->vdev_children == 0);
|
|
vdev_free(mvd);
|
|
}
|
|
|
|
void
|
|
vdev_metaslab_group_create(vdev_t *vd)
|
|
{
|
|
spa_t *spa = vd->vdev_spa;
|
|
|
|
/*
|
|
* metaslab_group_create was delayed until allocation bias was available
|
|
*/
|
|
if (vd->vdev_mg == NULL) {
|
|
metaslab_class_t *mc;
|
|
|
|
if (vd->vdev_islog && vd->vdev_alloc_bias == VDEV_BIAS_NONE)
|
|
vd->vdev_alloc_bias = VDEV_BIAS_LOG;
|
|
|
|
ASSERT3U(vd->vdev_islog, ==,
|
|
(vd->vdev_alloc_bias == VDEV_BIAS_LOG));
|
|
|
|
switch (vd->vdev_alloc_bias) {
|
|
case VDEV_BIAS_LOG:
|
|
mc = spa_log_class(spa);
|
|
break;
|
|
case VDEV_BIAS_SPECIAL:
|
|
mc = spa_special_class(spa);
|
|
break;
|
|
case VDEV_BIAS_DEDUP:
|
|
mc = spa_dedup_class(spa);
|
|
break;
|
|
default:
|
|
mc = spa_normal_class(spa);
|
|
}
|
|
|
|
vd->vdev_mg = metaslab_group_create(mc, vd,
|
|
spa->spa_alloc_count);
|
|
|
|
if (!vd->vdev_islog) {
|
|
vd->vdev_log_mg = metaslab_group_create(
|
|
spa_embedded_log_class(spa), vd, 1);
|
|
}
|
|
|
|
/*
|
|
* The spa ashift min/max only apply for the normal metaslab
|
|
* class. Class destination is late binding so ashift boundary
|
|
* setting had to wait until now.
|
|
*/
|
|
if (vd->vdev_top == vd && vd->vdev_ashift != 0 &&
|
|
mc == spa_normal_class(spa) && vd->vdev_aux == NULL) {
|
|
if (vd->vdev_ashift > spa->spa_max_ashift)
|
|
spa->spa_max_ashift = vd->vdev_ashift;
|
|
if (vd->vdev_ashift < spa->spa_min_ashift)
|
|
spa->spa_min_ashift = vd->vdev_ashift;
|
|
|
|
uint64_t min_alloc = vdev_get_min_alloc(vd);
|
|
if (min_alloc < spa->spa_min_alloc)
|
|
spa->spa_min_alloc = min_alloc;
|
|
}
|
|
}
|
|
}
|
|
|
|
int
|
|
vdev_metaslab_init(vdev_t *vd, uint64_t txg)
|
|
{
|
|
spa_t *spa = vd->vdev_spa;
|
|
uint64_t oldc = vd->vdev_ms_count;
|
|
uint64_t newc = vd->vdev_asize >> vd->vdev_ms_shift;
|
|
metaslab_t **mspp;
|
|
int error;
|
|
boolean_t expanding = (oldc != 0);
|
|
|
|
ASSERT(txg == 0 || spa_config_held(spa, SCL_ALLOC, RW_WRITER));
|
|
|
|
/*
|
|
* This vdev is not being allocated from yet or is a hole.
|
|
*/
|
|
if (vd->vdev_ms_shift == 0)
|
|
return (0);
|
|
|
|
ASSERT(!vd->vdev_ishole);
|
|
|
|
ASSERT(oldc <= newc);
|
|
|
|
mspp = vmem_zalloc(newc * sizeof (*mspp), KM_SLEEP);
|
|
|
|
if (expanding) {
|
|
bcopy(vd->vdev_ms, mspp, oldc * sizeof (*mspp));
|
|
vmem_free(vd->vdev_ms, oldc * sizeof (*mspp));
|
|
}
|
|
|
|
vd->vdev_ms = mspp;
|
|
vd->vdev_ms_count = newc;
|
|
|
|
for (uint64_t m = oldc; m < newc; m++) {
|
|
uint64_t object = 0;
|
|
/*
|
|
* vdev_ms_array may be 0 if we are creating the "fake"
|
|
* metaslabs for an indirect vdev for zdb's leak detection.
|
|
* See zdb_leak_init().
|
|
*/
|
|
if (txg == 0 && vd->vdev_ms_array != 0) {
|
|
error = dmu_read(spa->spa_meta_objset,
|
|
vd->vdev_ms_array,
|
|
m * sizeof (uint64_t), sizeof (uint64_t), &object,
|
|
DMU_READ_PREFETCH);
|
|
if (error != 0) {
|
|
vdev_dbgmsg(vd, "unable to read the metaslab "
|
|
"array [error=%d]", error);
|
|
return (error);
|
|
}
|
|
}
|
|
|
|
error = metaslab_init(vd->vdev_mg, m, object, txg,
|
|
&(vd->vdev_ms[m]));
|
|
if (error != 0) {
|
|
vdev_dbgmsg(vd, "metaslab_init failed [error=%d]",
|
|
error);
|
|
return (error);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Find the emptiest metaslab on the vdev and mark it for use for
|
|
* embedded slog by moving it from the regular to the log metaslab
|
|
* group.
|
|
*/
|
|
if (vd->vdev_mg->mg_class == spa_normal_class(spa) &&
|
|
vd->vdev_ms_count > zfs_embedded_slog_min_ms &&
|
|
avl_is_empty(&vd->vdev_log_mg->mg_metaslab_tree)) {
|
|
uint64_t slog_msid = 0;
|
|
uint64_t smallest = UINT64_MAX;
|
|
|
|
/*
|
|
* Note, we only search the new metaslabs, because the old
|
|
* (pre-existing) ones may be active (e.g. have non-empty
|
|
* range_tree's), and we don't move them to the new
|
|
* metaslab_t.
|
|
*/
|
|
for (uint64_t m = oldc; m < newc; m++) {
|
|
uint64_t alloc =
|
|
space_map_allocated(vd->vdev_ms[m]->ms_sm);
|
|
if (alloc < smallest) {
|
|
slog_msid = m;
|
|
smallest = alloc;
|
|
}
|
|
}
|
|
metaslab_t *slog_ms = vd->vdev_ms[slog_msid];
|
|
/*
|
|
* The metaslab was marked as dirty at the end of
|
|
* metaslab_init(). Remove it from the dirty list so that we
|
|
* can uninitialize and reinitialize it to the new class.
|
|
*/
|
|
if (txg != 0) {
|
|
(void) txg_list_remove_this(&vd->vdev_ms_list,
|
|
slog_ms, txg);
|
|
}
|
|
uint64_t sm_obj = space_map_object(slog_ms->ms_sm);
|
|
metaslab_fini(slog_ms);
|
|
VERIFY0(metaslab_init(vd->vdev_log_mg, slog_msid, sm_obj, txg,
|
|
&vd->vdev_ms[slog_msid]));
|
|
}
|
|
|
|
if (txg == 0)
|
|
spa_config_enter(spa, SCL_ALLOC, FTAG, RW_WRITER);
|
|
|
|
/*
|
|
* If the vdev is being removed we don't activate
|
|
* the metaslabs since we want to ensure that no new
|
|
* allocations are performed on this device.
|
|
*/
|
|
if (!expanding && !vd->vdev_removing) {
|
|
metaslab_group_activate(vd->vdev_mg);
|
|
if (vd->vdev_log_mg != NULL)
|
|
metaslab_group_activate(vd->vdev_log_mg);
|
|
}
|
|
|
|
if (txg == 0)
|
|
spa_config_exit(spa, SCL_ALLOC, FTAG);
|
|
|
|
return (0);
|
|
}
|
|
|
|
void
|
|
vdev_metaslab_fini(vdev_t *vd)
|
|
{
|
|
if (vd->vdev_checkpoint_sm != NULL) {
|
|
ASSERT(spa_feature_is_active(vd->vdev_spa,
|
|
SPA_FEATURE_POOL_CHECKPOINT));
|
|
space_map_close(vd->vdev_checkpoint_sm);
|
|
/*
|
|
* Even though we close the space map, we need to set its
|
|
* pointer to NULL. The reason is that vdev_metaslab_fini()
|
|
* may be called multiple times for certain operations
|
|
* (i.e. when destroying a pool) so we need to ensure that
|
|
* this clause never executes twice. This logic is similar
|
|
* to the one used for the vdev_ms clause below.
|
|
*/
|
|
vd->vdev_checkpoint_sm = NULL;
|
|
}
|
|
|
|
if (vd->vdev_ms != NULL) {
|
|
metaslab_group_t *mg = vd->vdev_mg;
|
|
|
|
metaslab_group_passivate(mg);
|
|
if (vd->vdev_log_mg != NULL) {
|
|
ASSERT(!vd->vdev_islog);
|
|
metaslab_group_passivate(vd->vdev_log_mg);
|
|
}
|
|
|
|
uint64_t count = vd->vdev_ms_count;
|
|
for (uint64_t m = 0; m < count; m++) {
|
|
metaslab_t *msp = vd->vdev_ms[m];
|
|
if (msp != NULL)
|
|
metaslab_fini(msp);
|
|
}
|
|
vmem_free(vd->vdev_ms, count * sizeof (metaslab_t *));
|
|
vd->vdev_ms = NULL;
|
|
vd->vdev_ms_count = 0;
|
|
|
|
for (int i = 0; i < RANGE_TREE_HISTOGRAM_SIZE; i++) {
|
|
ASSERT0(mg->mg_histogram[i]);
|
|
if (vd->vdev_log_mg != NULL)
|
|
ASSERT0(vd->vdev_log_mg->mg_histogram[i]);
|
|
}
|
|
}
|
|
ASSERT0(vd->vdev_ms_count);
|
|
ASSERT3U(vd->vdev_pending_fastwrite, ==, 0);
|
|
}
|
|
|
|
typedef struct vdev_probe_stats {
|
|
boolean_t vps_readable;
|
|
boolean_t vps_writeable;
|
|
int vps_flags;
|
|
} vdev_probe_stats_t;
|
|
|
|
static void
|
|
vdev_probe_done(zio_t *zio)
|
|
{
|
|
spa_t *spa = zio->io_spa;
|
|
vdev_t *vd = zio->io_vd;
|
|
vdev_probe_stats_t *vps = zio->io_private;
|
|
|
|
ASSERT(vd->vdev_probe_zio != NULL);
|
|
|
|
if (zio->io_type == ZIO_TYPE_READ) {
|
|
if (zio->io_error == 0)
|
|
vps->vps_readable = 1;
|
|
if (zio->io_error == 0 && spa_writeable(spa)) {
|
|
zio_nowait(zio_write_phys(vd->vdev_probe_zio, vd,
|
|
zio->io_offset, zio->io_size, zio->io_abd,
|
|
ZIO_CHECKSUM_OFF, vdev_probe_done, vps,
|
|
ZIO_PRIORITY_SYNC_WRITE, vps->vps_flags, B_TRUE));
|
|
} else {
|
|
abd_free(zio->io_abd);
|
|
}
|
|
} else if (zio->io_type == ZIO_TYPE_WRITE) {
|
|
if (zio->io_error == 0)
|
|
vps->vps_writeable = 1;
|
|
abd_free(zio->io_abd);
|
|
} else if (zio->io_type == ZIO_TYPE_NULL) {
|
|
zio_t *pio;
|
|
zio_link_t *zl;
|
|
|
|
vd->vdev_cant_read |= !vps->vps_readable;
|
|
vd->vdev_cant_write |= !vps->vps_writeable;
|
|
|
|
if (vdev_readable(vd) &&
|
|
(vdev_writeable(vd) || !spa_writeable(spa))) {
|
|
zio->io_error = 0;
|
|
} else {
|
|
ASSERT(zio->io_error != 0);
|
|
vdev_dbgmsg(vd, "failed probe");
|
|
(void) zfs_ereport_post(FM_EREPORT_ZFS_PROBE_FAILURE,
|
|
spa, vd, NULL, NULL, 0);
|
|
zio->io_error = SET_ERROR(ENXIO);
|
|
}
|
|
|
|
mutex_enter(&vd->vdev_probe_lock);
|
|
ASSERT(vd->vdev_probe_zio == zio);
|
|
vd->vdev_probe_zio = NULL;
|
|
mutex_exit(&vd->vdev_probe_lock);
|
|
|
|
zl = NULL;
|
|
while ((pio = zio_walk_parents(zio, &zl)) != NULL)
|
|
if (!vdev_accessible(vd, pio))
|
|
pio->io_error = SET_ERROR(ENXIO);
|
|
|
|
kmem_free(vps, sizeof (*vps));
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Determine whether this device is accessible.
|
|
*
|
|
* Read and write to several known locations: the pad regions of each
|
|
* vdev label but the first, which we leave alone in case it contains
|
|
* a VTOC.
|
|
*/
|
|
zio_t *
|
|
vdev_probe(vdev_t *vd, zio_t *zio)
|
|
{
|
|
spa_t *spa = vd->vdev_spa;
|
|
vdev_probe_stats_t *vps = NULL;
|
|
zio_t *pio;
|
|
|
|
ASSERT(vd->vdev_ops->vdev_op_leaf);
|
|
|
|
/*
|
|
* Don't probe the probe.
|
|
*/
|
|
if (zio && (zio->io_flags & ZIO_FLAG_PROBE))
|
|
return (NULL);
|
|
|
|
/*
|
|
* To prevent 'probe storms' when a device fails, we create
|
|
* just one probe i/o at a time. All zios that want to probe
|
|
* this vdev will become parents of the probe io.
|
|
*/
|
|
mutex_enter(&vd->vdev_probe_lock);
|
|
|
|
if ((pio = vd->vdev_probe_zio) == NULL) {
|
|
vps = kmem_zalloc(sizeof (*vps), KM_SLEEP);
|
|
|
|
vps->vps_flags = ZIO_FLAG_CANFAIL | ZIO_FLAG_PROBE |
|
|
ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_AGGREGATE |
|
|
ZIO_FLAG_TRYHARD;
|
|
|
|
if (spa_config_held(spa, SCL_ZIO, RW_WRITER)) {
|
|
/*
|
|
* vdev_cant_read and vdev_cant_write can only
|
|
* transition from TRUE to FALSE when we have the
|
|
* SCL_ZIO lock as writer; otherwise they can only
|
|
* transition from FALSE to TRUE. This ensures that
|
|
* any zio looking at these values can assume that
|
|
* failures persist for the life of the I/O. That's
|
|
* important because when a device has intermittent
|
|
* connectivity problems, we want to ensure that
|
|
* they're ascribed to the device (ENXIO) and not
|
|
* the zio (EIO).
|
|
*
|
|
* Since we hold SCL_ZIO as writer here, clear both
|
|
* values so the probe can reevaluate from first
|
|
* principles.
|
|
*/
|
|
vps->vps_flags |= ZIO_FLAG_CONFIG_WRITER;
|
|
vd->vdev_cant_read = B_FALSE;
|
|
vd->vdev_cant_write = B_FALSE;
|
|
}
|
|
|
|
vd->vdev_probe_zio = pio = zio_null(NULL, spa, vd,
|
|
vdev_probe_done, vps,
|
|
vps->vps_flags | ZIO_FLAG_DONT_PROPAGATE);
|
|
|
|
/*
|
|
* We can't change the vdev state in this context, so we
|
|
* kick off an async task to do it on our behalf.
|
|
*/
|
|
if (zio != NULL) {
|
|
vd->vdev_probe_wanted = B_TRUE;
|
|
spa_async_request(spa, SPA_ASYNC_PROBE);
|
|
}
|
|
}
|
|
|
|
if (zio != NULL)
|
|
zio_add_child(zio, pio);
|
|
|
|
mutex_exit(&vd->vdev_probe_lock);
|
|
|
|
if (vps == NULL) {
|
|
ASSERT(zio != NULL);
|
|
return (NULL);
|
|
}
|
|
|
|
for (int l = 1; l < VDEV_LABELS; l++) {
|
|
zio_nowait(zio_read_phys(pio, vd,
|
|
vdev_label_offset(vd->vdev_psize, l,
|
|
offsetof(vdev_label_t, vl_be)), VDEV_PAD_SIZE,
|
|
abd_alloc_for_io(VDEV_PAD_SIZE, B_TRUE),
|
|
ZIO_CHECKSUM_OFF, vdev_probe_done, vps,
|
|
ZIO_PRIORITY_SYNC_READ, vps->vps_flags, B_TRUE));
|
|
}
|
|
|
|
if (zio == NULL)
|
|
return (pio);
|
|
|
|
zio_nowait(pio);
|
|
return (NULL);
|
|
}
|
|
|
|
static void
|
|
vdev_load_child(void *arg)
|
|
{
|
|
vdev_t *vd = arg;
|
|
|
|
vd->vdev_load_error = vdev_load(vd);
|
|
}
|
|
|
|
static void
|
|
vdev_open_child(void *arg)
|
|
{
|
|
vdev_t *vd = arg;
|
|
|
|
vd->vdev_open_thread = curthread;
|
|
vd->vdev_open_error = vdev_open(vd);
|
|
vd->vdev_open_thread = NULL;
|
|
}
|
|
|
|
static boolean_t
|
|
vdev_uses_zvols(vdev_t *vd)
|
|
{
|
|
#ifdef _KERNEL
|
|
if (zvol_is_zvol(vd->vdev_path))
|
|
return (B_TRUE);
|
|
#endif
|
|
|
|
for (int c = 0; c < vd->vdev_children; c++)
|
|
if (vdev_uses_zvols(vd->vdev_child[c]))
|
|
return (B_TRUE);
|
|
|
|
return (B_FALSE);
|
|
}
|
|
|
|
/*
|
|
* Returns B_TRUE if the passed child should be opened.
|
|
*/
|
|
static boolean_t
|
|
vdev_default_open_children_func(vdev_t *vd)
|
|
{
|
|
(void) vd;
|
|
return (B_TRUE);
|
|
}
|
|
|
|
/*
|
|
* Open the requested child vdevs. If any of the leaf vdevs are using
|
|
* a ZFS volume then do the opens in a single thread. This avoids a
|
|
* deadlock when the current thread is holding the spa_namespace_lock.
|
|
*/
|
|
static void
|
|
vdev_open_children_impl(vdev_t *vd, vdev_open_children_func_t *open_func)
|
|
{
|
|
int children = vd->vdev_children;
|
|
|
|
taskq_t *tq = taskq_create("vdev_open", children, minclsyspri,
|
|
children, children, TASKQ_PREPOPULATE);
|
|
vd->vdev_nonrot = B_TRUE;
|
|
|
|
for (int c = 0; c < children; c++) {
|
|
vdev_t *cvd = vd->vdev_child[c];
|
|
|
|
if (open_func(cvd) == B_FALSE)
|
|
continue;
|
|
|
|
if (tq == NULL || vdev_uses_zvols(vd)) {
|
|
cvd->vdev_open_error = vdev_open(cvd);
|
|
} else {
|
|
VERIFY(taskq_dispatch(tq, vdev_open_child,
|
|
cvd, TQ_SLEEP) != TASKQID_INVALID);
|
|
}
|
|
|
|
vd->vdev_nonrot &= cvd->vdev_nonrot;
|
|
}
|
|
|
|
if (tq != NULL) {
|
|
taskq_wait(tq);
|
|
taskq_destroy(tq);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Open all child vdevs.
|
|
*/
|
|
void
|
|
vdev_open_children(vdev_t *vd)
|
|
{
|
|
vdev_open_children_impl(vd, vdev_default_open_children_func);
|
|
}
|
|
|
|
/*
|
|
* Conditionally open a subset of child vdevs.
|
|
*/
|
|
void
|
|
vdev_open_children_subset(vdev_t *vd, vdev_open_children_func_t *open_func)
|
|
{
|
|
vdev_open_children_impl(vd, open_func);
|
|
}
|
|
|
|
/*
|
|
* Compute the raidz-deflation ratio. Note, we hard-code
|
|
* in 128k (1 << 17) because it is the "typical" blocksize.
|
|
* Even though SPA_MAXBLOCKSIZE changed, this algorithm can not change,
|
|
* otherwise it would inconsistently account for existing bp's.
|
|
*/
|
|
static void
|
|
vdev_set_deflate_ratio(vdev_t *vd)
|
|
{
|
|
if (vd == vd->vdev_top && !vd->vdev_ishole && vd->vdev_ashift != 0) {
|
|
vd->vdev_deflate_ratio = (1 << 17) /
|
|
(vdev_psize_to_asize(vd, 1 << 17) >> SPA_MINBLOCKSHIFT);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Choose the best of two ashifts, preferring one between logical ashift
|
|
* (absolute minimum) and administrator defined maximum, otherwise take
|
|
* the biggest of the two.
|
|
*/
|
|
uint64_t
|
|
vdev_best_ashift(uint64_t logical, uint64_t a, uint64_t b)
|
|
{
|
|
if (a > logical && a <= zfs_vdev_max_auto_ashift) {
|
|
if (b <= logical || b > zfs_vdev_max_auto_ashift)
|
|
return (a);
|
|
else
|
|
return (MAX(a, b));
|
|
} else if (b <= logical || b > zfs_vdev_max_auto_ashift)
|
|
return (MAX(a, b));
|
|
return (b);
|
|
}
|
|
|
|
/*
|
|
* Maximize performance by inflating the configured ashift for top level
|
|
* vdevs to be as close to the physical ashift as possible while maintaining
|
|
* administrator defined limits and ensuring it doesn't go below the
|
|
* logical ashift.
|
|
*/
|
|
static void
|
|
vdev_ashift_optimize(vdev_t *vd)
|
|
{
|
|
ASSERT(vd == vd->vdev_top);
|
|
|
|
if (vd->vdev_ashift < vd->vdev_physical_ashift &&
|
|
vd->vdev_physical_ashift <= zfs_vdev_max_auto_ashift) {
|
|
vd->vdev_ashift = MIN(
|
|
MAX(zfs_vdev_max_auto_ashift, vd->vdev_ashift),
|
|
MAX(zfs_vdev_min_auto_ashift,
|
|
vd->vdev_physical_ashift));
|
|
} else {
|
|
/*
|
|
* If the logical and physical ashifts are the same, then
|
|
* we ensure that the top-level vdev's ashift is not smaller
|
|
* than our minimum ashift value. For the unusual case
|
|
* where logical ashift > physical ashift, we can't cap
|
|
* the calculated ashift based on max ashift as that
|
|
* would cause failures.
|
|
* We still check if we need to increase it to match
|
|
* the min ashift.
|
|
*/
|
|
vd->vdev_ashift = MAX(zfs_vdev_min_auto_ashift,
|
|
vd->vdev_ashift);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Prepare a virtual device for access.
|
|
*/
|
|
int
|
|
vdev_open(vdev_t *vd)
|
|
{
|
|
spa_t *spa = vd->vdev_spa;
|
|
int error;
|
|
uint64_t osize = 0;
|
|
uint64_t max_osize = 0;
|
|
uint64_t asize, max_asize, psize;
|
|
uint64_t logical_ashift = 0;
|
|
uint64_t physical_ashift = 0;
|
|
|
|
ASSERT(vd->vdev_open_thread == curthread ||
|
|
spa_config_held(spa, SCL_STATE_ALL, RW_WRITER) == SCL_STATE_ALL);
|
|
ASSERT(vd->vdev_state == VDEV_STATE_CLOSED ||
|
|
vd->vdev_state == VDEV_STATE_CANT_OPEN ||
|
|
vd->vdev_state == VDEV_STATE_OFFLINE);
|
|
|
|
vd->vdev_stat.vs_aux = VDEV_AUX_NONE;
|
|
vd->vdev_cant_read = B_FALSE;
|
|
vd->vdev_cant_write = B_FALSE;
|
|
vd->vdev_min_asize = vdev_get_min_asize(vd);
|
|
|
|
/*
|
|
* If this vdev is not removed, check its fault status. If it's
|
|
* faulted, bail out of the open.
|
|
*/
|
|
if (!vd->vdev_removed && vd->vdev_faulted) {
|
|
ASSERT(vd->vdev_children == 0);
|
|
ASSERT(vd->vdev_label_aux == VDEV_AUX_ERR_EXCEEDED ||
|
|
vd->vdev_label_aux == VDEV_AUX_EXTERNAL);
|
|
vdev_set_state(vd, B_TRUE, VDEV_STATE_FAULTED,
|
|
vd->vdev_label_aux);
|
|
return (SET_ERROR(ENXIO));
|
|
} else if (vd->vdev_offline) {
|
|
ASSERT(vd->vdev_children == 0);
|
|
vdev_set_state(vd, B_TRUE, VDEV_STATE_OFFLINE, VDEV_AUX_NONE);
|
|
return (SET_ERROR(ENXIO));
|
|
}
|
|
|
|
error = vd->vdev_ops->vdev_op_open(vd, &osize, &max_osize,
|
|
&logical_ashift, &physical_ashift);
|
|
|
|
/* Keep the device in removed state if unplugged */
|
|
if (error == ENOENT && vd->vdev_removed) {
|
|
vdev_set_state(vd, B_TRUE, VDEV_STATE_REMOVED,
|
|
VDEV_AUX_NONE);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Physical volume size should never be larger than its max size, unless
|
|
* the disk has shrunk while we were reading it or the device is buggy
|
|
* or damaged: either way it's not safe for use, bail out of the open.
|
|
*/
|
|
if (osize > max_osize) {
|
|
vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN,
|
|
VDEV_AUX_OPEN_FAILED);
|
|
return (SET_ERROR(ENXIO));
|
|
}
|
|
|
|
/*
|
|
* Reset the vdev_reopening flag so that we actually close
|
|
* the vdev on error.
|
|
*/
|
|
vd->vdev_reopening = B_FALSE;
|
|
if (zio_injection_enabled && error == 0)
|
|
error = zio_handle_device_injection(vd, NULL, SET_ERROR(ENXIO));
|
|
|
|
if (error) {
|
|
if (vd->vdev_removed &&
|
|
vd->vdev_stat.vs_aux != VDEV_AUX_OPEN_FAILED)
|
|
vd->vdev_removed = B_FALSE;
|
|
|
|
if (vd->vdev_stat.vs_aux == VDEV_AUX_CHILDREN_OFFLINE) {
|
|
vdev_set_state(vd, B_TRUE, VDEV_STATE_OFFLINE,
|
|
vd->vdev_stat.vs_aux);
|
|
} else {
|
|
vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN,
|
|
vd->vdev_stat.vs_aux);
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
vd->vdev_removed = B_FALSE;
|
|
|
|
/*
|
|
* Recheck the faulted flag now that we have confirmed that
|
|
* the vdev is accessible. If we're faulted, bail.
|
|
*/
|
|
if (vd->vdev_faulted) {
|
|
ASSERT(vd->vdev_children == 0);
|
|
ASSERT(vd->vdev_label_aux == VDEV_AUX_ERR_EXCEEDED ||
|
|
vd->vdev_label_aux == VDEV_AUX_EXTERNAL);
|
|
vdev_set_state(vd, B_TRUE, VDEV_STATE_FAULTED,
|
|
vd->vdev_label_aux);
|
|
return (SET_ERROR(ENXIO));
|
|
}
|
|
|
|
if (vd->vdev_degraded) {
|
|
ASSERT(vd->vdev_children == 0);
|
|
vdev_set_state(vd, B_TRUE, VDEV_STATE_DEGRADED,
|
|
VDEV_AUX_ERR_EXCEEDED);
|
|
} else {
|
|
vdev_set_state(vd, B_TRUE, VDEV_STATE_HEALTHY, 0);
|
|
}
|
|
|
|
/*
|
|
* For hole or missing vdevs we just return success.
|
|
*/
|
|
if (vd->vdev_ishole || vd->vdev_ops == &vdev_missing_ops)
|
|
return (0);
|
|
|
|
for (int c = 0; c < vd->vdev_children; c++) {
|
|
if (vd->vdev_child[c]->vdev_state != VDEV_STATE_HEALTHY) {
|
|
vdev_set_state(vd, B_TRUE, VDEV_STATE_DEGRADED,
|
|
VDEV_AUX_NONE);
|
|
break;
|
|
}
|
|
}
|
|
|
|
osize = P2ALIGN(osize, (uint64_t)sizeof (vdev_label_t));
|
|
max_osize = P2ALIGN(max_osize, (uint64_t)sizeof (vdev_label_t));
|
|
|
|
if (vd->vdev_children == 0) {
|
|
if (osize < SPA_MINDEVSIZE) {
|
|
vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN,
|
|
VDEV_AUX_TOO_SMALL);
|
|
return (SET_ERROR(EOVERFLOW));
|
|
}
|
|
psize = osize;
|
|
asize = osize - (VDEV_LABEL_START_SIZE + VDEV_LABEL_END_SIZE);
|
|
max_asize = max_osize - (VDEV_LABEL_START_SIZE +
|
|
VDEV_LABEL_END_SIZE);
|
|
} else {
|
|
if (vd->vdev_parent != NULL && osize < SPA_MINDEVSIZE -
|
|
(VDEV_LABEL_START_SIZE + VDEV_LABEL_END_SIZE)) {
|
|
vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN,
|
|
VDEV_AUX_TOO_SMALL);
|
|
return (SET_ERROR(EOVERFLOW));
|
|
}
|
|
psize = 0;
|
|
asize = osize;
|
|
max_asize = max_osize;
|
|
}
|
|
|
|
/*
|
|
* If the vdev was expanded, record this so that we can re-create the
|
|
* uberblock rings in labels {2,3}, during the next sync.
|
|
*/
|
|
if ((psize > vd->vdev_psize) && (vd->vdev_psize != 0))
|
|
vd->vdev_copy_uberblocks = B_TRUE;
|
|
|
|
vd->vdev_psize = psize;
|
|
|
|
/*
|
|
* Make sure the allocatable size hasn't shrunk too much.
|
|
*/
|
|
if (asize < vd->vdev_min_asize) {
|
|
vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN,
|
|
VDEV_AUX_BAD_LABEL);
|
|
return (SET_ERROR(EINVAL));
|
|
}
|
|
|
|
/*
|
|
* We can always set the logical/physical ashift members since
|
|
* their values are only used to calculate the vdev_ashift when
|
|
* the device is first added to the config. These values should
|
|
* not be used for anything else since they may change whenever
|
|
* the device is reopened and we don't store them in the label.
|
|
*/
|
|
vd->vdev_physical_ashift =
|
|
MAX(physical_ashift, vd->vdev_physical_ashift);
|
|
vd->vdev_logical_ashift = MAX(logical_ashift,
|
|
vd->vdev_logical_ashift);
|
|
|
|
if (vd->vdev_asize == 0) {
|
|
/*
|
|
* This is the first-ever open, so use the computed values.
|
|
* For compatibility, a different ashift can be requested.
|
|
*/
|
|
vd->vdev_asize = asize;
|
|
vd->vdev_max_asize = max_asize;
|
|
|
|
/*
|
|
* If the vdev_ashift was not overridden at creation time,
|
|
* then set it the logical ashift and optimize the ashift.
|
|
*/
|
|
if (vd->vdev_ashift == 0) {
|
|
vd->vdev_ashift = vd->vdev_logical_ashift;
|
|
|
|
if (vd->vdev_logical_ashift > ASHIFT_MAX) {
|
|
vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN,
|
|
VDEV_AUX_ASHIFT_TOO_BIG);
|
|
return (SET_ERROR(EDOM));
|
|
}
|
|
|
|
if (vd->vdev_top == vd) {
|
|
vdev_ashift_optimize(vd);
|
|
}
|
|
}
|
|
if (vd->vdev_ashift != 0 && (vd->vdev_ashift < ASHIFT_MIN ||
|
|
vd->vdev_ashift > ASHIFT_MAX)) {
|
|
vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN,
|
|
VDEV_AUX_BAD_ASHIFT);
|
|
return (SET_ERROR(EDOM));
|
|
}
|
|
} else {
|
|
/*
|
|
* Make sure the alignment required hasn't increased.
|
|
*/
|
|
if (vd->vdev_ashift > vd->vdev_top->vdev_ashift &&
|
|
vd->vdev_ops->vdev_op_leaf) {
|
|
(void) zfs_ereport_post(
|
|
FM_EREPORT_ZFS_DEVICE_BAD_ASHIFT,
|
|
spa, vd, NULL, NULL, 0);
|
|
vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN,
|
|
VDEV_AUX_BAD_LABEL);
|
|
return (SET_ERROR(EDOM));
|
|
}
|
|
vd->vdev_max_asize = max_asize;
|
|
}
|
|
|
|
/*
|
|
* If all children are healthy we update asize if either:
|
|
* The asize has increased, due to a device expansion caused by dynamic
|
|
* LUN growth or vdev replacement, and automatic expansion is enabled;
|
|
* making the additional space available.
|
|
*
|
|
* The asize has decreased, due to a device shrink usually caused by a
|
|
* vdev replace with a smaller device. This ensures that calculations
|
|
* based of max_asize and asize e.g. esize are always valid. It's safe
|
|
* to do this as we've already validated that asize is greater than
|
|
* vdev_min_asize.
|
|
*/
|
|
if (vd->vdev_state == VDEV_STATE_HEALTHY &&
|
|
((asize > vd->vdev_asize &&
|
|
(vd->vdev_expanding || spa->spa_autoexpand)) ||
|
|
(asize < vd->vdev_asize)))
|
|
vd->vdev_asize = asize;
|
|
|
|
vdev_set_min_asize(vd);
|
|
|
|
/*
|
|
* Ensure we can issue some IO before declaring the
|
|
* vdev open for business.
|
|
*/
|
|
if (vd->vdev_ops->vdev_op_leaf &&
|
|
(error = zio_wait(vdev_probe(vd, NULL))) != 0) {
|
|
vdev_set_state(vd, B_TRUE, VDEV_STATE_FAULTED,
|
|
VDEV_AUX_ERR_EXCEEDED);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Track the minimum allocation size.
|
|
*/
|
|
if (vd->vdev_top == vd && vd->vdev_ashift != 0 &&
|
|
vd->vdev_islog == 0 && vd->vdev_aux == NULL) {
|
|
uint64_t min_alloc = vdev_get_min_alloc(vd);
|
|
if (min_alloc < spa->spa_min_alloc)
|
|
spa->spa_min_alloc = min_alloc;
|
|
}
|
|
|
|
/*
|
|
* If this is a leaf vdev, assess whether a resilver is needed.
|
|
* But don't do this if we are doing a reopen for a scrub, since
|
|
* this would just restart the scrub we are already doing.
|
|
*/
|
|
if (vd->vdev_ops->vdev_op_leaf && !spa->spa_scrub_reopen)
|
|
dsl_scan_assess_vdev(spa->spa_dsl_pool, vd);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
vdev_validate_child(void *arg)
|
|
{
|
|
vdev_t *vd = arg;
|
|
|
|
vd->vdev_validate_thread = curthread;
|
|
vd->vdev_validate_error = vdev_validate(vd);
|
|
vd->vdev_validate_thread = NULL;
|
|
}
|
|
|
|
/*
|
|
* Called once the vdevs are all opened, this routine validates the label
|
|
* contents. This needs to be done before vdev_load() so that we don't
|
|
* inadvertently do repair I/Os to the wrong device.
|
|
*
|
|
* This function will only return failure if one of the vdevs indicates that it
|
|
* has since been destroyed or exported. This is only possible if
|
|
* /etc/zfs/zpool.cache was readonly at the time. Otherwise, the vdev state
|
|
* will be updated but the function will return 0.
|
|
*/
|
|
int
|
|
vdev_validate(vdev_t *vd)
|
|
{
|
|
spa_t *spa = vd->vdev_spa;
|
|
taskq_t *tq = NULL;
|
|
nvlist_t *label;
|
|
uint64_t guid = 0, aux_guid = 0, top_guid;
|
|
uint64_t state;
|
|
nvlist_t *nvl;
|
|
uint64_t txg;
|
|
int children = vd->vdev_children;
|
|
|
|
if (vdev_validate_skip)
|
|
return (0);
|
|
|
|
if (children > 0) {
|
|
tq = taskq_create("vdev_validate", children, minclsyspri,
|
|
children, children, TASKQ_PREPOPULATE);
|
|
}
|
|
|
|
for (uint64_t c = 0; c < children; c++) {
|
|
vdev_t *cvd = vd->vdev_child[c];
|
|
|
|
if (tq == NULL || vdev_uses_zvols(cvd)) {
|
|
vdev_validate_child(cvd);
|
|
} else {
|
|
VERIFY(taskq_dispatch(tq, vdev_validate_child, cvd,
|
|
TQ_SLEEP) != TASKQID_INVALID);
|
|
}
|
|
}
|
|
if (tq != NULL) {
|
|
taskq_wait(tq);
|
|
taskq_destroy(tq);
|
|
}
|
|
for (int c = 0; c < children; c++) {
|
|
int error = vd->vdev_child[c]->vdev_validate_error;
|
|
|
|
if (error != 0)
|
|
return (SET_ERROR(EBADF));
|
|
}
|
|
|
|
|
|
/*
|
|
* If the device has already failed, or was marked offline, don't do
|
|
* any further validation. Otherwise, label I/O will fail and we will
|
|
* overwrite the previous state.
|
|
*/
|
|
if (!vd->vdev_ops->vdev_op_leaf || !vdev_readable(vd))
|
|
return (0);
|
|
|
|
/*
|
|
* If we are performing an extreme rewind, we allow for a label that
|
|
* was modified at a point after the current txg.
|
|
* If config lock is not held do not check for the txg. spa_sync could
|
|
* be updating the vdev's label before updating spa_last_synced_txg.
|
|
*/
|
|
if (spa->spa_extreme_rewind || spa_last_synced_txg(spa) == 0 ||
|
|
spa_config_held(spa, SCL_CONFIG, RW_WRITER) != SCL_CONFIG)
|
|
txg = UINT64_MAX;
|
|
else
|
|
txg = spa_last_synced_txg(spa);
|
|
|
|
if ((label = vdev_label_read_config(vd, txg)) == NULL) {
|
|
vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN,
|
|
VDEV_AUX_BAD_LABEL);
|
|
vdev_dbgmsg(vd, "vdev_validate: failed reading config for "
|
|
"txg %llu", (u_longlong_t)txg);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Determine if this vdev has been split off into another
|
|
* pool. If so, then refuse to open it.
|
|
*/
|
|
if (nvlist_lookup_uint64(label, ZPOOL_CONFIG_SPLIT_GUID,
|
|
&aux_guid) == 0 && aux_guid == spa_guid(spa)) {
|
|
vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN,
|
|
VDEV_AUX_SPLIT_POOL);
|
|
nvlist_free(label);
|
|
vdev_dbgmsg(vd, "vdev_validate: vdev split into other pool");
|
|
return (0);
|
|
}
|
|
|
|
if (nvlist_lookup_uint64(label, ZPOOL_CONFIG_POOL_GUID, &guid) != 0) {
|
|
vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN,
|
|
VDEV_AUX_CORRUPT_DATA);
|
|
nvlist_free(label);
|
|
vdev_dbgmsg(vd, "vdev_validate: '%s' missing from label",
|
|
ZPOOL_CONFIG_POOL_GUID);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* If config is not trusted then ignore the spa guid check. This is
|
|
* necessary because if the machine crashed during a re-guid the new
|
|
* guid might have been written to all of the vdev labels, but not the
|
|
* cached config. The check will be performed again once we have the
|
|
* trusted config from the MOS.
|
|
*/
|
|
if (spa->spa_trust_config && guid != spa_guid(spa)) {
|
|
vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN,
|
|
VDEV_AUX_CORRUPT_DATA);
|
|
nvlist_free(label);
|
|
vdev_dbgmsg(vd, "vdev_validate: vdev label pool_guid doesn't "
|
|
"match config (%llu != %llu)", (u_longlong_t)guid,
|
|
(u_longlong_t)spa_guid(spa));
|
|
return (0);
|
|
}
|
|
|
|
if (nvlist_lookup_nvlist(label, ZPOOL_CONFIG_VDEV_TREE, &nvl)
|
|
!= 0 || nvlist_lookup_uint64(nvl, ZPOOL_CONFIG_ORIG_GUID,
|
|
&aux_guid) != 0)
|
|
aux_guid = 0;
|
|
|
|
if (nvlist_lookup_uint64(label, ZPOOL_CONFIG_GUID, &guid) != 0) {
|
|
vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN,
|
|
VDEV_AUX_CORRUPT_DATA);
|
|
nvlist_free(label);
|
|
vdev_dbgmsg(vd, "vdev_validate: '%s' missing from label",
|
|
ZPOOL_CONFIG_GUID);
|
|
return (0);
|
|
}
|
|
|
|
if (nvlist_lookup_uint64(label, ZPOOL_CONFIG_TOP_GUID, &top_guid)
|
|
!= 0) {
|
|
vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN,
|
|
VDEV_AUX_CORRUPT_DATA);
|
|
nvlist_free(label);
|
|
vdev_dbgmsg(vd, "vdev_validate: '%s' missing from label",
|
|
ZPOOL_CONFIG_TOP_GUID);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* If this vdev just became a top-level vdev because its sibling was
|
|
* detached, it will have adopted the parent's vdev guid -- but the
|
|
* label may or may not be on disk yet. Fortunately, either version
|
|
* of the label will have the same top guid, so if we're a top-level
|
|
* vdev, we can safely compare to that instead.
|
|
* However, if the config comes from a cachefile that failed to update
|
|
* after the detach, a top-level vdev will appear as a non top-level
|
|
* vdev in the config. Also relax the constraints if we perform an
|
|
* extreme rewind.
|
|
*
|
|
* If we split this vdev off instead, then we also check the
|
|
* original pool's guid. We don't want to consider the vdev
|
|
* corrupt if it is partway through a split operation.
|
|
*/
|
|
if (vd->vdev_guid != guid && vd->vdev_guid != aux_guid) {
|
|
boolean_t mismatch = B_FALSE;
|
|
if (spa->spa_trust_config && !spa->spa_extreme_rewind) {
|
|
if (vd != vd->vdev_top || vd->vdev_guid != top_guid)
|
|
mismatch = B_TRUE;
|
|
} else {
|
|
if (vd->vdev_guid != top_guid &&
|
|
vd->vdev_top->vdev_guid != guid)
|
|
mismatch = B_TRUE;
|
|
}
|
|
|
|
if (mismatch) {
|
|
vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN,
|
|
VDEV_AUX_CORRUPT_DATA);
|
|
nvlist_free(label);
|
|
vdev_dbgmsg(vd, "vdev_validate: config guid "
|
|
"doesn't match label guid");
|
|
vdev_dbgmsg(vd, "CONFIG: guid %llu, top_guid %llu",
|
|
(u_longlong_t)vd->vdev_guid,
|
|
(u_longlong_t)vd->vdev_top->vdev_guid);
|
|
vdev_dbgmsg(vd, "LABEL: guid %llu, top_guid %llu, "
|
|
"aux_guid %llu", (u_longlong_t)guid,
|
|
(u_longlong_t)top_guid, (u_longlong_t)aux_guid);
|
|
return (0);
|
|
}
|
|
}
|
|
|
|
if (nvlist_lookup_uint64(label, ZPOOL_CONFIG_POOL_STATE,
|
|
&state) != 0) {
|
|
vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN,
|
|
VDEV_AUX_CORRUPT_DATA);
|
|
nvlist_free(label);
|
|
vdev_dbgmsg(vd, "vdev_validate: '%s' missing from label",
|
|
ZPOOL_CONFIG_POOL_STATE);
|
|
return (0);
|
|
}
|
|
|
|
nvlist_free(label);
|
|
|
|
/*
|
|
* If this is a verbatim import, no need to check the
|
|
* state of the pool.
|
|
*/
|
|
if (!(spa->spa_import_flags & ZFS_IMPORT_VERBATIM) &&
|
|
spa_load_state(spa) == SPA_LOAD_OPEN &&
|
|
state != POOL_STATE_ACTIVE) {
|
|
vdev_dbgmsg(vd, "vdev_validate: invalid pool state (%llu) "
|
|
"for spa %s", (u_longlong_t)state, spa->spa_name);
|
|
return (SET_ERROR(EBADF));
|
|
}
|
|
|
|
/*
|
|
* If we were able to open and validate a vdev that was
|
|
* previously marked permanently unavailable, clear that state
|
|
* now.
|
|
*/
|
|
if (vd->vdev_not_present)
|
|
vd->vdev_not_present = 0;
|
|
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
vdev_copy_path_impl(vdev_t *svd, vdev_t *dvd)
|
|
{
|
|
char *old, *new;
|
|
if (svd->vdev_path != NULL && dvd->vdev_path != NULL) {
|
|
if (strcmp(svd->vdev_path, dvd->vdev_path) != 0) {
|
|
zfs_dbgmsg("vdev_copy_path: vdev %llu: path changed "
|
|
"from '%s' to '%s'", (u_longlong_t)dvd->vdev_guid,
|
|
dvd->vdev_path, svd->vdev_path);
|
|
spa_strfree(dvd->vdev_path);
|
|
dvd->vdev_path = spa_strdup(svd->vdev_path);
|
|
}
|
|
} else if (svd->vdev_path != NULL) {
|
|
dvd->vdev_path = spa_strdup(svd->vdev_path);
|
|
zfs_dbgmsg("vdev_copy_path: vdev %llu: path set to '%s'",
|
|
(u_longlong_t)dvd->vdev_guid, dvd->vdev_path);
|
|
}
|
|
|
|
/*
|
|
* Our enclosure sysfs path may have changed between imports
|
|
*/
|
|
old = dvd->vdev_enc_sysfs_path;
|
|
new = svd->vdev_enc_sysfs_path;
|
|
if ((old != NULL && new == NULL) ||
|
|
(old == NULL && new != NULL) ||
|
|
((old != NULL && new != NULL) && strcmp(new, old) != 0)) {
|
|
zfs_dbgmsg("vdev_copy_path: vdev %llu: vdev_enc_sysfs_path "
|
|
"changed from '%s' to '%s'", (u_longlong_t)dvd->vdev_guid,
|
|
old, new);
|
|
|
|
if (dvd->vdev_enc_sysfs_path)
|
|
spa_strfree(dvd->vdev_enc_sysfs_path);
|
|
|
|
if (svd->vdev_enc_sysfs_path) {
|
|
dvd->vdev_enc_sysfs_path = spa_strdup(
|
|
svd->vdev_enc_sysfs_path);
|
|
} else {
|
|
dvd->vdev_enc_sysfs_path = NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Recursively copy vdev paths from one vdev to another. Source and destination
|
|
* vdev trees must have same geometry otherwise return error. Intended to copy
|
|
* paths from userland config into MOS config.
|
|
*/
|
|
int
|
|
vdev_copy_path_strict(vdev_t *svd, vdev_t *dvd)
|
|
{
|
|
if ((svd->vdev_ops == &vdev_missing_ops) ||
|
|
(svd->vdev_ishole && dvd->vdev_ishole) ||
|
|
(dvd->vdev_ops == &vdev_indirect_ops))
|
|
return (0);
|
|
|
|
if (svd->vdev_ops != dvd->vdev_ops) {
|
|
vdev_dbgmsg(svd, "vdev_copy_path: vdev type mismatch: %s != %s",
|
|
svd->vdev_ops->vdev_op_type, dvd->vdev_ops->vdev_op_type);
|
|
return (SET_ERROR(EINVAL));
|
|
}
|
|
|
|
if (svd->vdev_guid != dvd->vdev_guid) {
|
|
vdev_dbgmsg(svd, "vdev_copy_path: guids mismatch (%llu != "
|
|
"%llu)", (u_longlong_t)svd->vdev_guid,
|
|
(u_longlong_t)dvd->vdev_guid);
|
|
return (SET_ERROR(EINVAL));
|
|
}
|
|
|
|
if (svd->vdev_children != dvd->vdev_children) {
|
|
vdev_dbgmsg(svd, "vdev_copy_path: children count mismatch: "
|
|
"%llu != %llu", (u_longlong_t)svd->vdev_children,
|
|
(u_longlong_t)dvd->vdev_children);
|
|
return (SET_ERROR(EINVAL));
|
|
}
|
|
|
|
for (uint64_t i = 0; i < svd->vdev_children; i++) {
|
|
int error = vdev_copy_path_strict(svd->vdev_child[i],
|
|
dvd->vdev_child[i]);
|
|
if (error != 0)
|
|
return (error);
|
|
}
|
|
|
|
if (svd->vdev_ops->vdev_op_leaf)
|
|
vdev_copy_path_impl(svd, dvd);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
vdev_copy_path_search(vdev_t *stvd, vdev_t *dvd)
|
|
{
|
|
ASSERT(stvd->vdev_top == stvd);
|
|
ASSERT3U(stvd->vdev_id, ==, dvd->vdev_top->vdev_id);
|
|
|
|
for (uint64_t i = 0; i < dvd->vdev_children; i++) {
|
|
vdev_copy_path_search(stvd, dvd->vdev_child[i]);
|
|
}
|
|
|
|
if (!dvd->vdev_ops->vdev_op_leaf || !vdev_is_concrete(dvd))
|
|
return;
|
|
|
|
/*
|
|
* The idea here is that while a vdev can shift positions within
|
|
* a top vdev (when replacing, attaching mirror, etc.) it cannot
|
|
* step outside of it.
|
|
*/
|
|
vdev_t *vd = vdev_lookup_by_guid(stvd, dvd->vdev_guid);
|
|
|
|
if (vd == NULL || vd->vdev_ops != dvd->vdev_ops)
|
|
return;
|
|
|
|
ASSERT(vd->vdev_ops->vdev_op_leaf);
|
|
|
|
vdev_copy_path_impl(vd, dvd);
|
|
}
|
|
|
|
/*
|
|
* Recursively copy vdev paths from one root vdev to another. Source and
|
|
* destination vdev trees may differ in geometry. For each destination leaf
|
|
* vdev, search a vdev with the same guid and top vdev id in the source.
|
|
* Intended to copy paths from userland config into MOS config.
|
|
*/
|
|
void
|
|
vdev_copy_path_relaxed(vdev_t *srvd, vdev_t *drvd)
|
|
{
|
|
uint64_t children = MIN(srvd->vdev_children, drvd->vdev_children);
|
|
ASSERT(srvd->vdev_ops == &vdev_root_ops);
|
|
ASSERT(drvd->vdev_ops == &vdev_root_ops);
|
|
|
|
for (uint64_t i = 0; i < children; i++) {
|
|
vdev_copy_path_search(srvd->vdev_child[i],
|
|
drvd->vdev_child[i]);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Close a virtual device.
|
|
*/
|
|
void
|
|
vdev_close(vdev_t *vd)
|
|
{
|
|
vdev_t *pvd = vd->vdev_parent;
|
|
spa_t *spa __maybe_unused = vd->vdev_spa;
|
|
|
|
ASSERT(vd != NULL);
|
|
ASSERT(vd->vdev_open_thread == curthread ||
|
|
spa_config_held(spa, SCL_STATE_ALL, RW_WRITER) == SCL_STATE_ALL);
|
|
|
|
/*
|
|
* If our parent is reopening, then we are as well, unless we are
|
|
* going offline.
|
|
*/
|
|
if (pvd != NULL && pvd->vdev_reopening)
|
|
vd->vdev_reopening = (pvd->vdev_reopening && !vd->vdev_offline);
|
|
|
|
vd->vdev_ops->vdev_op_close(vd);
|
|
|
|
vdev_cache_purge(vd);
|
|
|
|
/*
|
|
* We record the previous state before we close it, so that if we are
|
|
* doing a reopen(), we don't generate FMA ereports if we notice that
|
|
* it's still faulted.
|
|
*/
|
|
vd->vdev_prevstate = vd->vdev_state;
|
|
|
|
if (vd->vdev_offline)
|
|
vd->vdev_state = VDEV_STATE_OFFLINE;
|
|
else
|
|
vd->vdev_state = VDEV_STATE_CLOSED;
|
|
vd->vdev_stat.vs_aux = VDEV_AUX_NONE;
|
|
}
|
|
|
|
void
|
|
vdev_hold(vdev_t *vd)
|
|
{
|
|
spa_t *spa = vd->vdev_spa;
|
|
|
|
ASSERT(spa_is_root(spa));
|
|
if (spa->spa_state == POOL_STATE_UNINITIALIZED)
|
|
return;
|
|
|
|
for (int c = 0; c < vd->vdev_children; c++)
|
|
vdev_hold(vd->vdev_child[c]);
|
|
|
|
if (vd->vdev_ops->vdev_op_leaf && vd->vdev_ops->vdev_op_hold != NULL)
|
|
vd->vdev_ops->vdev_op_hold(vd);
|
|
}
|
|
|
|
void
|
|
vdev_rele(vdev_t *vd)
|
|
{
|
|
ASSERT(spa_is_root(vd->vdev_spa));
|
|
for (int c = 0; c < vd->vdev_children; c++)
|
|
vdev_rele(vd->vdev_child[c]);
|
|
|
|
if (vd->vdev_ops->vdev_op_leaf && vd->vdev_ops->vdev_op_rele != NULL)
|
|
vd->vdev_ops->vdev_op_rele(vd);
|
|
}
|
|
|
|
/*
|
|
* Reopen all interior vdevs and any unopened leaves. We don't actually
|
|
* reopen leaf vdevs which had previously been opened as they might deadlock
|
|
* on the spa_config_lock. Instead we only obtain the leaf's physical size.
|
|
* If the leaf has never been opened then open it, as usual.
|
|
*/
|
|
void
|
|
vdev_reopen(vdev_t *vd)
|
|
{
|
|
spa_t *spa = vd->vdev_spa;
|
|
|
|
ASSERT(spa_config_held(spa, SCL_STATE_ALL, RW_WRITER) == SCL_STATE_ALL);
|
|
|
|
/* set the reopening flag unless we're taking the vdev offline */
|
|
vd->vdev_reopening = !vd->vdev_offline;
|
|
vdev_close(vd);
|
|
(void) vdev_open(vd);
|
|
|
|
/*
|
|
* Call vdev_validate() here to make sure we have the same device.
|
|
* Otherwise, a device with an invalid label could be successfully
|
|
* opened in response to vdev_reopen().
|
|
*/
|
|
if (vd->vdev_aux) {
|
|
(void) vdev_validate_aux(vd);
|
|
if (vdev_readable(vd) && vdev_writeable(vd) &&
|
|
vd->vdev_aux == &spa->spa_l2cache) {
|
|
/*
|
|
* In case the vdev is present we should evict all ARC
|
|
* buffers and pointers to log blocks and reclaim their
|
|
* space before restoring its contents to L2ARC.
|
|
*/
|
|
if (l2arc_vdev_present(vd)) {
|
|
l2arc_rebuild_vdev(vd, B_TRUE);
|
|
} else {
|
|
l2arc_add_vdev(spa, vd);
|
|
}
|
|
spa_async_request(spa, SPA_ASYNC_L2CACHE_REBUILD);
|
|
spa_async_request(spa, SPA_ASYNC_L2CACHE_TRIM);
|
|
}
|
|
} else {
|
|
(void) vdev_validate(vd);
|
|
}
|
|
|
|
/*
|
|
* Recheck if resilver is still needed and cancel any
|
|
* scheduled resilver if resilver is unneeded.
|
|
*/
|
|
if (!vdev_resilver_needed(spa->spa_root_vdev, NULL, NULL) &&
|
|
spa->spa_async_tasks & SPA_ASYNC_RESILVER) {
|
|
mutex_enter(&spa->spa_async_lock);
|
|
spa->spa_async_tasks &= ~SPA_ASYNC_RESILVER;
|
|
mutex_exit(&spa->spa_async_lock);
|
|
}
|
|
|
|
/*
|
|
* Reassess parent vdev's health.
|
|
*/
|
|
vdev_propagate_state(vd);
|
|
}
|
|
|
|
int
|
|
vdev_create(vdev_t *vd, uint64_t txg, boolean_t isreplacing)
|
|
{
|
|
int error;
|
|
|
|
/*
|
|
* Normally, partial opens (e.g. of a mirror) are allowed.
|
|
* For a create, however, we want to fail the request if
|
|
* there are any components we can't open.
|
|
*/
|
|
error = vdev_open(vd);
|
|
|
|
if (error || vd->vdev_state != VDEV_STATE_HEALTHY) {
|
|
vdev_close(vd);
|
|
return (error ? error : SET_ERROR(ENXIO));
|
|
}
|
|
|
|
/*
|
|
* Recursively load DTLs and initialize all labels.
|
|
*/
|
|
if ((error = vdev_dtl_load(vd)) != 0 ||
|
|
(error = vdev_label_init(vd, txg, isreplacing ?
|
|
VDEV_LABEL_REPLACE : VDEV_LABEL_CREATE)) != 0) {
|
|
vdev_close(vd);
|
|
return (error);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
void
|
|
vdev_metaslab_set_size(vdev_t *vd)
|
|
{
|
|
uint64_t asize = vd->vdev_asize;
|
|
uint64_t ms_count = asize >> zfs_vdev_default_ms_shift;
|
|
uint64_t ms_shift;
|
|
|
|
/*
|
|
* There are two dimensions to the metaslab sizing calculation:
|
|
* the size of the metaslab and the count of metaslabs per vdev.
|
|
*
|
|
* The default values used below are a good balance between memory
|
|
* usage (larger metaslab size means more memory needed for loaded
|
|
* metaslabs; more metaslabs means more memory needed for the
|
|
* metaslab_t structs), metaslab load time (larger metaslabs take
|
|
* longer to load), and metaslab sync time (more metaslabs means
|
|
* more time spent syncing all of them).
|
|
*
|
|
* In general, we aim for zfs_vdev_default_ms_count (200) metaslabs.
|
|
* The range of the dimensions are as follows:
|
|
*
|
|
* 2^29 <= ms_size <= 2^34
|
|
* 16 <= ms_count <= 131,072
|
|
*
|
|
* On the lower end of vdev sizes, we aim for metaslabs sizes of
|
|
* at least 512MB (2^29) to minimize fragmentation effects when
|
|
* testing with smaller devices. However, the count constraint
|
|
* of at least 16 metaslabs will override this minimum size goal.
|
|
*
|
|
* On the upper end of vdev sizes, we aim for a maximum metaslab
|
|
* size of 16GB. However, we will cap the total count to 2^17
|
|
* metaslabs to keep our memory footprint in check and let the
|
|
* metaslab size grow from there if that limit is hit.
|
|
*
|
|
* The net effect of applying above constrains is summarized below.
|
|
*
|
|
* vdev size metaslab count
|
|
* --------------|-----------------
|
|
* < 8GB ~16
|
|
* 8GB - 100GB one per 512MB
|
|
* 100GB - 3TB ~200
|
|
* 3TB - 2PB one per 16GB
|
|
* > 2PB ~131,072
|
|
* --------------------------------
|
|
*
|
|
* Finally, note that all of the above calculate the initial
|
|
* number of metaslabs. Expanding a top-level vdev will result
|
|
* in additional metaslabs being allocated making it possible
|
|
* to exceed the zfs_vdev_ms_count_limit.
|
|
*/
|
|
|
|
if (ms_count < zfs_vdev_min_ms_count)
|
|
ms_shift = highbit64(asize / zfs_vdev_min_ms_count);
|
|
else if (ms_count > zfs_vdev_default_ms_count)
|
|
ms_shift = highbit64(asize / zfs_vdev_default_ms_count);
|
|
else
|
|
ms_shift = zfs_vdev_default_ms_shift;
|
|
|
|
if (ms_shift < SPA_MAXBLOCKSHIFT) {
|
|
ms_shift = SPA_MAXBLOCKSHIFT;
|
|
} else if (ms_shift > zfs_vdev_max_ms_shift) {
|
|
ms_shift = zfs_vdev_max_ms_shift;
|
|
/* cap the total count to constrain memory footprint */
|
|
if ((asize >> ms_shift) > zfs_vdev_ms_count_limit)
|
|
ms_shift = highbit64(asize / zfs_vdev_ms_count_limit);
|
|
}
|
|
|
|
vd->vdev_ms_shift = ms_shift;
|
|
ASSERT3U(vd->vdev_ms_shift, >=, SPA_MAXBLOCKSHIFT);
|
|
}
|
|
|
|
void
|
|
vdev_dirty(vdev_t *vd, int flags, void *arg, uint64_t txg)
|
|
{
|
|
ASSERT(vd == vd->vdev_top);
|
|
/* indirect vdevs don't have metaslabs or dtls */
|
|
ASSERT(vdev_is_concrete(vd) || flags == 0);
|
|
ASSERT(ISP2(flags));
|
|
ASSERT(spa_writeable(vd->vdev_spa));
|
|
|
|
if (flags & VDD_METASLAB)
|
|
(void) txg_list_add(&vd->vdev_ms_list, arg, txg);
|
|
|
|
if (flags & VDD_DTL)
|
|
(void) txg_list_add(&vd->vdev_dtl_list, arg, txg);
|
|
|
|
(void) txg_list_add(&vd->vdev_spa->spa_vdev_txg_list, vd, txg);
|
|
}
|
|
|
|
void
|
|
vdev_dirty_leaves(vdev_t *vd, int flags, uint64_t txg)
|
|
{
|
|
for (int c = 0; c < vd->vdev_children; c++)
|
|
vdev_dirty_leaves(vd->vdev_child[c], flags, txg);
|
|
|
|
if (vd->vdev_ops->vdev_op_leaf)
|
|
vdev_dirty(vd->vdev_top, flags, vd, txg);
|
|
}
|
|
|
|
/*
|
|
* DTLs.
|
|
*
|
|
* A vdev's DTL (dirty time log) is the set of transaction groups for which
|
|
* the vdev has less than perfect replication. There are four kinds of DTL:
|
|
*
|
|
* DTL_MISSING: txgs for which the vdev has no valid copies of the data
|
|
*
|
|
* DTL_PARTIAL: txgs for which data is available, but not fully replicated
|
|
*
|
|
* DTL_SCRUB: the txgs that could not be repaired by the last scrub; upon
|
|
* scrub completion, DTL_SCRUB replaces DTL_MISSING in the range of
|
|
* txgs that was scrubbed.
|
|
*
|
|
* DTL_OUTAGE: txgs which cannot currently be read, whether due to
|
|
* persistent errors or just some device being offline.
|
|
* Unlike the other three, the DTL_OUTAGE map is not generally
|
|
* maintained; it's only computed when needed, typically to
|
|
* determine whether a device can be detached.
|
|
*
|
|
* For leaf vdevs, DTL_MISSING and DTL_PARTIAL are identical: the device
|
|
* either has the data or it doesn't.
|
|
*
|
|
* For interior vdevs such as mirror and RAID-Z the picture is more complex.
|
|
* A vdev's DTL_PARTIAL is the union of its children's DTL_PARTIALs, because
|
|
* if any child is less than fully replicated, then so is its parent.
|
|
* A vdev's DTL_MISSING is a modified union of its children's DTL_MISSINGs,
|
|
* comprising only those txgs which appear in 'maxfaults' or more children;
|
|
* those are the txgs we don't have enough replication to read. For example,
|
|
* double-parity RAID-Z can tolerate up to two missing devices (maxfaults == 2);
|
|
* thus, its DTL_MISSING consists of the set of txgs that appear in more than
|
|
* two child DTL_MISSING maps.
|
|
*
|
|
* It should be clear from the above that to compute the DTLs and outage maps
|
|
* for all vdevs, it suffices to know just the leaf vdevs' DTL_MISSING maps.
|
|
* Therefore, that is all we keep on disk. When loading the pool, or after
|
|
* a configuration change, we generate all other DTLs from first principles.
|
|
*/
|
|
void
|
|
vdev_dtl_dirty(vdev_t *vd, vdev_dtl_type_t t, uint64_t txg, uint64_t size)
|
|
{
|
|
range_tree_t *rt = vd->vdev_dtl[t];
|
|
|
|
ASSERT(t < DTL_TYPES);
|
|
ASSERT(vd != vd->vdev_spa->spa_root_vdev);
|
|
ASSERT(spa_writeable(vd->vdev_spa));
|
|
|
|
mutex_enter(&vd->vdev_dtl_lock);
|
|
if (!range_tree_contains(rt, txg, size))
|
|
range_tree_add(rt, txg, size);
|
|
mutex_exit(&vd->vdev_dtl_lock);
|
|
}
|
|
|
|
boolean_t
|
|
vdev_dtl_contains(vdev_t *vd, vdev_dtl_type_t t, uint64_t txg, uint64_t size)
|
|
{
|
|
range_tree_t *rt = vd->vdev_dtl[t];
|
|
boolean_t dirty = B_FALSE;
|
|
|
|
ASSERT(t < DTL_TYPES);
|
|
ASSERT(vd != vd->vdev_spa->spa_root_vdev);
|
|
|
|
/*
|
|
* While we are loading the pool, the DTLs have not been loaded yet.
|
|
* This isn't a problem but it can result in devices being tried
|
|
* which are known to not have the data. In which case, the import
|
|
* is relying on the checksum to ensure that we get the right data.
|
|
* Note that while importing we are only reading the MOS, which is
|
|
* always checksummed.
|
|
*/
|
|
mutex_enter(&vd->vdev_dtl_lock);
|
|
if (!range_tree_is_empty(rt))
|
|
dirty = range_tree_contains(rt, txg, size);
|
|
mutex_exit(&vd->vdev_dtl_lock);
|
|
|
|
return (dirty);
|
|
}
|
|
|
|
boolean_t
|
|
vdev_dtl_empty(vdev_t *vd, vdev_dtl_type_t t)
|
|
{
|
|
range_tree_t *rt = vd->vdev_dtl[t];
|
|
boolean_t empty;
|
|
|
|
mutex_enter(&vd->vdev_dtl_lock);
|
|
empty = range_tree_is_empty(rt);
|
|
mutex_exit(&vd->vdev_dtl_lock);
|
|
|
|
return (empty);
|
|
}
|
|
|
|
/*
|
|
* Check if the txg falls within the range which must be
|
|
* resilvered. DVAs outside this range can always be skipped.
|
|
*/
|
|
boolean_t
|
|
vdev_default_need_resilver(vdev_t *vd, const dva_t *dva, size_t psize,
|
|
uint64_t phys_birth)
|
|
{
|
|
(void) dva, (void) psize;
|
|
|
|
/* Set by sequential resilver. */
|
|
if (phys_birth == TXG_UNKNOWN)
|
|
return (B_TRUE);
|
|
|
|
return (vdev_dtl_contains(vd, DTL_PARTIAL, phys_birth, 1));
|
|
}
|
|
|
|
/*
|
|
* Returns B_TRUE if the vdev determines the DVA needs to be resilvered.
|
|
*/
|
|
boolean_t
|
|
vdev_dtl_need_resilver(vdev_t *vd, const dva_t *dva, size_t psize,
|
|
uint64_t phys_birth)
|
|
{
|
|
ASSERT(vd != vd->vdev_spa->spa_root_vdev);
|
|
|
|
if (vd->vdev_ops->vdev_op_need_resilver == NULL ||
|
|
vd->vdev_ops->vdev_op_leaf)
|
|
return (B_TRUE);
|
|
|
|
return (vd->vdev_ops->vdev_op_need_resilver(vd, dva, psize,
|
|
phys_birth));
|
|
}
|
|
|
|
/*
|
|
* Returns the lowest txg in the DTL range.
|
|
*/
|
|
static uint64_t
|
|
vdev_dtl_min(vdev_t *vd)
|
|
{
|
|
ASSERT(MUTEX_HELD(&vd->vdev_dtl_lock));
|
|
ASSERT3U(range_tree_space(vd->vdev_dtl[DTL_MISSING]), !=, 0);
|
|
ASSERT0(vd->vdev_children);
|
|
|
|
return (range_tree_min(vd->vdev_dtl[DTL_MISSING]) - 1);
|
|
}
|
|
|
|
/*
|
|
* Returns the highest txg in the DTL.
|
|
*/
|
|
static uint64_t
|
|
vdev_dtl_max(vdev_t *vd)
|
|
{
|
|
ASSERT(MUTEX_HELD(&vd->vdev_dtl_lock));
|
|
ASSERT3U(range_tree_space(vd->vdev_dtl[DTL_MISSING]), !=, 0);
|
|
ASSERT0(vd->vdev_children);
|
|
|
|
return (range_tree_max(vd->vdev_dtl[DTL_MISSING]));
|
|
}
|
|
|
|
/*
|
|
* Determine if a resilvering vdev should remove any DTL entries from
|
|
* its range. If the vdev was resilvering for the entire duration of the
|
|
* scan then it should excise that range from its DTLs. Otherwise, this
|
|
* vdev is considered partially resilvered and should leave its DTL
|
|
* entries intact. The comment in vdev_dtl_reassess() describes how we
|
|
* excise the DTLs.
|
|
*/
|
|
static boolean_t
|
|
vdev_dtl_should_excise(vdev_t *vd, boolean_t rebuild_done)
|
|
{
|
|
ASSERT0(vd->vdev_children);
|
|
|
|
if (vd->vdev_state < VDEV_STATE_DEGRADED)
|
|
return (B_FALSE);
|
|
|
|
if (vd->vdev_resilver_deferred)
|
|
return (B_FALSE);
|
|
|
|
if (range_tree_is_empty(vd->vdev_dtl[DTL_MISSING]))
|
|
return (B_TRUE);
|
|
|
|
if (rebuild_done) {
|
|
vdev_rebuild_t *vr = &vd->vdev_top->vdev_rebuild_config;
|
|
vdev_rebuild_phys_t *vrp = &vr->vr_rebuild_phys;
|
|
|
|
/* Rebuild not initiated by attach */
|
|
if (vd->vdev_rebuild_txg == 0)
|
|
return (B_TRUE);
|
|
|
|
/*
|
|
* When a rebuild completes without error then all missing data
|
|
* up to the rebuild max txg has been reconstructed and the DTL
|
|
* is eligible for excision.
|
|
*/
|
|
if (vrp->vrp_rebuild_state == VDEV_REBUILD_COMPLETE &&
|
|
vdev_dtl_max(vd) <= vrp->vrp_max_txg) {
|
|
ASSERT3U(vrp->vrp_min_txg, <=, vdev_dtl_min(vd));
|
|
ASSERT3U(vrp->vrp_min_txg, <, vd->vdev_rebuild_txg);
|
|
ASSERT3U(vd->vdev_rebuild_txg, <=, vrp->vrp_max_txg);
|
|
return (B_TRUE);
|
|
}
|
|
} else {
|
|
dsl_scan_t *scn = vd->vdev_spa->spa_dsl_pool->dp_scan;
|
|
dsl_scan_phys_t *scnp __maybe_unused = &scn->scn_phys;
|
|
|
|
/* Resilver not initiated by attach */
|
|
if (vd->vdev_resilver_txg == 0)
|
|
return (B_TRUE);
|
|
|
|
/*
|
|
* When a resilver is initiated the scan will assign the
|
|
* scn_max_txg value to the highest txg value that exists
|
|
* in all DTLs. If this device's max DTL is not part of this
|
|
* scan (i.e. it is not in the range (scn_min_txg, scn_max_txg]
|
|
* then it is not eligible for excision.
|
|
*/
|
|
if (vdev_dtl_max(vd) <= scn->scn_phys.scn_max_txg) {
|
|
ASSERT3U(scnp->scn_min_txg, <=, vdev_dtl_min(vd));
|
|
ASSERT3U(scnp->scn_min_txg, <, vd->vdev_resilver_txg);
|
|
ASSERT3U(vd->vdev_resilver_txg, <=, scnp->scn_max_txg);
|
|
return (B_TRUE);
|
|
}
|
|
}
|
|
|
|
return (B_FALSE);
|
|
}
|
|
|
|
/*
|
|
* Reassess DTLs after a config change or scrub completion. If txg == 0 no
|
|
* write operations will be issued to the pool.
|
|
*/
|
|
void
|
|
vdev_dtl_reassess(vdev_t *vd, uint64_t txg, uint64_t scrub_txg,
|
|
boolean_t scrub_done, boolean_t rebuild_done)
|
|
{
|
|
spa_t *spa = vd->vdev_spa;
|
|
avl_tree_t reftree;
|
|
int minref;
|
|
|
|
ASSERT(spa_config_held(spa, SCL_ALL, RW_READER) != 0);
|
|
|
|
for (int c = 0; c < vd->vdev_children; c++)
|
|
vdev_dtl_reassess(vd->vdev_child[c], txg,
|
|
scrub_txg, scrub_done, rebuild_done);
|
|
|
|
if (vd == spa->spa_root_vdev || !vdev_is_concrete(vd) || vd->vdev_aux)
|
|
return;
|
|
|
|
if (vd->vdev_ops->vdev_op_leaf) {
|
|
dsl_scan_t *scn = spa->spa_dsl_pool->dp_scan;
|
|
vdev_rebuild_t *vr = &vd->vdev_top->vdev_rebuild_config;
|
|
boolean_t check_excise = B_FALSE;
|
|
boolean_t wasempty = B_TRUE;
|
|
|
|
mutex_enter(&vd->vdev_dtl_lock);
|
|
|
|
/*
|
|
* If requested, pretend the scan or rebuild completed cleanly.
|
|
*/
|
|
if (zfs_scan_ignore_errors) {
|
|
if (scn != NULL)
|
|
scn->scn_phys.scn_errors = 0;
|
|
if (vr != NULL)
|
|
vr->vr_rebuild_phys.vrp_errors = 0;
|
|
}
|
|
|
|
if (scrub_txg != 0 &&
|
|
!range_tree_is_empty(vd->vdev_dtl[DTL_MISSING])) {
|
|
wasempty = B_FALSE;
|
|
zfs_dbgmsg("guid:%llu txg:%llu scrub:%llu started:%d "
|
|
"dtl:%llu/%llu errors:%llu",
|
|
(u_longlong_t)vd->vdev_guid, (u_longlong_t)txg,
|
|
(u_longlong_t)scrub_txg, spa->spa_scrub_started,
|
|
(u_longlong_t)vdev_dtl_min(vd),
|
|
(u_longlong_t)vdev_dtl_max(vd),
|
|
(u_longlong_t)(scn ? scn->scn_phys.scn_errors : 0));
|
|
}
|
|
|
|
/*
|
|
* If we've completed a scrub/resilver or a rebuild cleanly
|
|
* then determine if this vdev should remove any DTLs. We
|
|
* only want to excise regions on vdevs that were available
|
|
* during the entire duration of this scan.
|
|
*/
|
|
if (rebuild_done &&
|
|
vr != NULL && vr->vr_rebuild_phys.vrp_errors == 0) {
|
|
check_excise = B_TRUE;
|
|
} else {
|
|
if (spa->spa_scrub_started ||
|
|
(scn != NULL && scn->scn_phys.scn_errors == 0)) {
|
|
check_excise = B_TRUE;
|
|
}
|
|
}
|
|
|
|
if (scrub_txg && check_excise &&
|
|
vdev_dtl_should_excise(vd, rebuild_done)) {
|
|
/*
|
|
* We completed a scrub, resilver or rebuild up to
|
|
* scrub_txg. If we did it without rebooting, then
|
|
* the scrub dtl will be valid, so excise the old
|
|
* region and fold in the scrub dtl. Otherwise,
|
|
* leave the dtl as-is if there was an error.
|
|
*
|
|
* There's little trick here: to excise the beginning
|
|
* of the DTL_MISSING map, we put it into a reference
|
|
* tree and then add a segment with refcnt -1 that
|
|
* covers the range [0, scrub_txg). This means
|
|
* that each txg in that range has refcnt -1 or 0.
|
|
* We then add DTL_SCRUB with a refcnt of 2, so that
|
|
* entries in the range [0, scrub_txg) will have a
|
|
* positive refcnt -- either 1 or 2. We then convert
|
|
* the reference tree into the new DTL_MISSING map.
|
|
*/
|
|
space_reftree_create(&reftree);
|
|
space_reftree_add_map(&reftree,
|
|
vd->vdev_dtl[DTL_MISSING], 1);
|
|
space_reftree_add_seg(&reftree, 0, scrub_txg, -1);
|
|
space_reftree_add_map(&reftree,
|
|
vd->vdev_dtl[DTL_SCRUB], 2);
|
|
space_reftree_generate_map(&reftree,
|
|
vd->vdev_dtl[DTL_MISSING], 1);
|
|
space_reftree_destroy(&reftree);
|
|
|
|
if (!range_tree_is_empty(vd->vdev_dtl[DTL_MISSING])) {
|
|
zfs_dbgmsg("update DTL_MISSING:%llu/%llu",
|
|
(u_longlong_t)vdev_dtl_min(vd),
|
|
(u_longlong_t)vdev_dtl_max(vd));
|
|
} else if (!wasempty) {
|
|
zfs_dbgmsg("DTL_MISSING is now empty");
|
|
}
|
|
}
|
|
range_tree_vacate(vd->vdev_dtl[DTL_PARTIAL], NULL, NULL);
|
|
range_tree_walk(vd->vdev_dtl[DTL_MISSING],
|
|
range_tree_add, vd->vdev_dtl[DTL_PARTIAL]);
|
|
if (scrub_done)
|
|
range_tree_vacate(vd->vdev_dtl[DTL_SCRUB], NULL, NULL);
|
|
range_tree_vacate(vd->vdev_dtl[DTL_OUTAGE], NULL, NULL);
|
|
if (!vdev_readable(vd))
|
|
range_tree_add(vd->vdev_dtl[DTL_OUTAGE], 0, -1ULL);
|
|
else
|
|
range_tree_walk(vd->vdev_dtl[DTL_MISSING],
|
|
range_tree_add, vd->vdev_dtl[DTL_OUTAGE]);
|
|
|
|
/*
|
|
* If the vdev was resilvering or rebuilding and no longer
|
|
* has any DTLs then reset the appropriate flag and dirty
|
|
* the top level so that we persist the change.
|
|
*/
|
|
if (txg != 0 &&
|
|
range_tree_is_empty(vd->vdev_dtl[DTL_MISSING]) &&
|
|
range_tree_is_empty(vd->vdev_dtl[DTL_OUTAGE])) {
|
|
if (vd->vdev_rebuild_txg != 0) {
|
|
vd->vdev_rebuild_txg = 0;
|
|
vdev_config_dirty(vd->vdev_top);
|
|
} else if (vd->vdev_resilver_txg != 0) {
|
|
vd->vdev_resilver_txg = 0;
|
|
vdev_config_dirty(vd->vdev_top);
|
|
}
|
|
}
|
|
|
|
mutex_exit(&vd->vdev_dtl_lock);
|
|
|
|
if (txg != 0)
|
|
vdev_dirty(vd->vdev_top, VDD_DTL, vd, txg);
|
|
return;
|
|
}
|
|
|
|
mutex_enter(&vd->vdev_dtl_lock);
|
|
for (int t = 0; t < DTL_TYPES; t++) {
|
|
/* account for child's outage in parent's missing map */
|
|
int s = (t == DTL_MISSING) ? DTL_OUTAGE: t;
|
|
if (t == DTL_SCRUB)
|
|
continue; /* leaf vdevs only */
|
|
if (t == DTL_PARTIAL)
|
|
minref = 1; /* i.e. non-zero */
|
|
else if (vdev_get_nparity(vd) != 0)
|
|
minref = vdev_get_nparity(vd) + 1; /* RAID-Z, dRAID */
|
|
else
|
|
minref = vd->vdev_children; /* any kind of mirror */
|
|
space_reftree_create(&reftree);
|
|
for (int c = 0; c < vd->vdev_children; c++) {
|
|
vdev_t *cvd = vd->vdev_child[c];
|
|
mutex_enter(&cvd->vdev_dtl_lock);
|
|
space_reftree_add_map(&reftree, cvd->vdev_dtl[s], 1);
|
|
mutex_exit(&cvd->vdev_dtl_lock);
|
|
}
|
|
space_reftree_generate_map(&reftree, vd->vdev_dtl[t], minref);
|
|
space_reftree_destroy(&reftree);
|
|
}
|
|
mutex_exit(&vd->vdev_dtl_lock);
|
|
}
|
|
|
|
/*
|
|
* Iterate over all the vdevs except spare, and post kobj events
|
|
*/
|
|
void
|
|
vdev_post_kobj_evt(vdev_t *vd)
|
|
{
|
|
if (vd->vdev_ops->vdev_op_kobj_evt_post &&
|
|
vd->vdev_kobj_flag == B_FALSE) {
|
|
vd->vdev_kobj_flag = B_TRUE;
|
|
vd->vdev_ops->vdev_op_kobj_evt_post(vd);
|
|
}
|
|
|
|
for (int c = 0; c < vd->vdev_children; c++)
|
|
vdev_post_kobj_evt(vd->vdev_child[c]);
|
|
}
|
|
|
|
/*
|
|
* Iterate over all the vdevs except spare, and clear kobj events
|
|
*/
|
|
void
|
|
vdev_clear_kobj_evt(vdev_t *vd)
|
|
{
|
|
vd->vdev_kobj_flag = B_FALSE;
|
|
|
|
for (int c = 0; c < vd->vdev_children; c++)
|
|
vdev_clear_kobj_evt(vd->vdev_child[c]);
|
|
}
|
|
|
|
int
|
|
vdev_dtl_load(vdev_t *vd)
|
|
{
|
|
spa_t *spa = vd->vdev_spa;
|
|
objset_t *mos = spa->spa_meta_objset;
|
|
range_tree_t *rt;
|
|
int error = 0;
|
|
|
|
if (vd->vdev_ops->vdev_op_leaf && vd->vdev_dtl_object != 0) {
|
|
ASSERT(vdev_is_concrete(vd));
|
|
|
|
/*
|
|
* If the dtl cannot be sync'd there is no need to open it.
|
|
*/
|
|
if (spa->spa_mode == SPA_MODE_READ && !spa->spa_read_spacemaps)
|
|
return (0);
|
|
|
|
error = space_map_open(&vd->vdev_dtl_sm, mos,
|
|
vd->vdev_dtl_object, 0, -1ULL, 0);
|
|
if (error)
|
|
return (error);
|
|
ASSERT(vd->vdev_dtl_sm != NULL);
|
|
|
|
rt = range_tree_create(NULL, RANGE_SEG64, NULL, 0, 0);
|
|
error = space_map_load(vd->vdev_dtl_sm, rt, SM_ALLOC);
|
|
if (error == 0) {
|
|
mutex_enter(&vd->vdev_dtl_lock);
|
|
range_tree_walk(rt, range_tree_add,
|
|
vd->vdev_dtl[DTL_MISSING]);
|
|
mutex_exit(&vd->vdev_dtl_lock);
|
|
}
|
|
|
|
range_tree_vacate(rt, NULL, NULL);
|
|
range_tree_destroy(rt);
|
|
|
|
return (error);
|
|
}
|
|
|
|
for (int c = 0; c < vd->vdev_children; c++) {
|
|
error = vdev_dtl_load(vd->vdev_child[c]);
|
|
if (error != 0)
|
|
break;
|
|
}
|
|
|
|
return (error);
|
|
}
|
|
|
|
static void
|
|
vdev_zap_allocation_data(vdev_t *vd, dmu_tx_t *tx)
|
|
{
|
|
spa_t *spa = vd->vdev_spa;
|
|
objset_t *mos = spa->spa_meta_objset;
|
|
vdev_alloc_bias_t alloc_bias = vd->vdev_alloc_bias;
|
|
const char *string;
|
|
|
|
ASSERT(alloc_bias != VDEV_BIAS_NONE);
|
|
|
|
string =
|
|
(alloc_bias == VDEV_BIAS_LOG) ? VDEV_ALLOC_BIAS_LOG :
|
|
(alloc_bias == VDEV_BIAS_SPECIAL) ? VDEV_ALLOC_BIAS_SPECIAL :
|
|
(alloc_bias == VDEV_BIAS_DEDUP) ? VDEV_ALLOC_BIAS_DEDUP : NULL;
|
|
|
|
ASSERT(string != NULL);
|
|
VERIFY0(zap_add(mos, vd->vdev_top_zap, VDEV_TOP_ZAP_ALLOCATION_BIAS,
|
|
1, strlen(string) + 1, string, tx));
|
|
|
|
if (alloc_bias == VDEV_BIAS_SPECIAL || alloc_bias == VDEV_BIAS_DEDUP) {
|
|
spa_activate_allocation_classes(spa, tx);
|
|
}
|
|
}
|
|
|
|
void
|
|
vdev_destroy_unlink_zap(vdev_t *vd, uint64_t zapobj, dmu_tx_t *tx)
|
|
{
|
|
spa_t *spa = vd->vdev_spa;
|
|
|
|
VERIFY0(zap_destroy(spa->spa_meta_objset, zapobj, tx));
|
|
VERIFY0(zap_remove_int(spa->spa_meta_objset, spa->spa_all_vdev_zaps,
|
|
zapobj, tx));
|
|
}
|
|
|
|
uint64_t
|
|
vdev_create_link_zap(vdev_t *vd, dmu_tx_t *tx)
|
|
{
|
|
spa_t *spa = vd->vdev_spa;
|
|
uint64_t zap = zap_create(spa->spa_meta_objset, DMU_OTN_ZAP_METADATA,
|
|
DMU_OT_NONE, 0, tx);
|
|
|
|
ASSERT(zap != 0);
|
|
VERIFY0(zap_add_int(spa->spa_meta_objset, spa->spa_all_vdev_zaps,
|
|
zap, tx));
|
|
|
|
return (zap);
|
|
}
|
|
|
|
void
|
|
vdev_construct_zaps(vdev_t *vd, dmu_tx_t *tx)
|
|
{
|
|
if (vd->vdev_ops != &vdev_hole_ops &&
|
|
vd->vdev_ops != &vdev_missing_ops &&
|
|
vd->vdev_ops != &vdev_root_ops &&
|
|
!vd->vdev_top->vdev_removing) {
|
|
if (vd->vdev_ops->vdev_op_leaf && vd->vdev_leaf_zap == 0) {
|
|
vd->vdev_leaf_zap = vdev_create_link_zap(vd, tx);
|
|
}
|
|
if (vd == vd->vdev_top && vd->vdev_top_zap == 0) {
|
|
vd->vdev_top_zap = vdev_create_link_zap(vd, tx);
|
|
if (vd->vdev_alloc_bias != VDEV_BIAS_NONE)
|
|
vdev_zap_allocation_data(vd, tx);
|
|
}
|
|
}
|
|
|
|
for (uint64_t i = 0; i < vd->vdev_children; i++) {
|
|
vdev_construct_zaps(vd->vdev_child[i], tx);
|
|
}
|
|
}
|
|
|
|
static void
|
|
vdev_dtl_sync(vdev_t *vd, uint64_t txg)
|
|
{
|
|
spa_t *spa = vd->vdev_spa;
|
|
range_tree_t *rt = vd->vdev_dtl[DTL_MISSING];
|
|
objset_t *mos = spa->spa_meta_objset;
|
|
range_tree_t *rtsync;
|
|
dmu_tx_t *tx;
|
|
uint64_t object = space_map_object(vd->vdev_dtl_sm);
|
|
|
|
ASSERT(vdev_is_concrete(vd));
|
|
ASSERT(vd->vdev_ops->vdev_op_leaf);
|
|
|
|
tx = dmu_tx_create_assigned(spa->spa_dsl_pool, txg);
|
|
|
|
if (vd->vdev_detached || vd->vdev_top->vdev_removing) {
|
|
mutex_enter(&vd->vdev_dtl_lock);
|
|
space_map_free(vd->vdev_dtl_sm, tx);
|
|
space_map_close(vd->vdev_dtl_sm);
|
|
vd->vdev_dtl_sm = NULL;
|
|
mutex_exit(&vd->vdev_dtl_lock);
|
|
|
|
/*
|
|
* We only destroy the leaf ZAP for detached leaves or for
|
|
* removed log devices. Removed data devices handle leaf ZAP
|
|
* cleanup later, once cancellation is no longer possible.
|
|
*/
|
|
if (vd->vdev_leaf_zap != 0 && (vd->vdev_detached ||
|
|
vd->vdev_top->vdev_islog)) {
|
|
vdev_destroy_unlink_zap(vd, vd->vdev_leaf_zap, tx);
|
|
vd->vdev_leaf_zap = 0;
|
|
}
|
|
|
|
dmu_tx_commit(tx);
|
|
return;
|
|
}
|
|
|
|
if (vd->vdev_dtl_sm == NULL) {
|
|
uint64_t new_object;
|
|
|
|
new_object = space_map_alloc(mos, zfs_vdev_dtl_sm_blksz, tx);
|
|
VERIFY3U(new_object, !=, 0);
|
|
|
|
VERIFY0(space_map_open(&vd->vdev_dtl_sm, mos, new_object,
|
|
0, -1ULL, 0));
|
|
ASSERT(vd->vdev_dtl_sm != NULL);
|
|
}
|
|
|
|
rtsync = range_tree_create(NULL, RANGE_SEG64, NULL, 0, 0);
|
|
|
|
mutex_enter(&vd->vdev_dtl_lock);
|
|
range_tree_walk(rt, range_tree_add, rtsync);
|
|
mutex_exit(&vd->vdev_dtl_lock);
|
|
|
|
space_map_truncate(vd->vdev_dtl_sm, zfs_vdev_dtl_sm_blksz, tx);
|
|
space_map_write(vd->vdev_dtl_sm, rtsync, SM_ALLOC, SM_NO_VDEVID, tx);
|
|
range_tree_vacate(rtsync, NULL, NULL);
|
|
|
|
range_tree_destroy(rtsync);
|
|
|
|
/*
|
|
* If the object for the space map has changed then dirty
|
|
* the top level so that we update the config.
|
|
*/
|
|
if (object != space_map_object(vd->vdev_dtl_sm)) {
|
|
vdev_dbgmsg(vd, "txg %llu, spa %s, DTL old object %llu, "
|
|
"new object %llu", (u_longlong_t)txg, spa_name(spa),
|
|
(u_longlong_t)object,
|
|
(u_longlong_t)space_map_object(vd->vdev_dtl_sm));
|
|
vdev_config_dirty(vd->vdev_top);
|
|
}
|
|
|
|
dmu_tx_commit(tx);
|
|
}
|
|
|
|
/*
|
|
* Determine whether the specified vdev can be offlined/detached/removed
|
|
* without losing data.
|
|
*/
|
|
boolean_t
|
|
vdev_dtl_required(vdev_t *vd)
|
|
{
|
|
spa_t *spa = vd->vdev_spa;
|
|
vdev_t *tvd = vd->vdev_top;
|
|
uint8_t cant_read = vd->vdev_cant_read;
|
|
boolean_t required;
|
|
|
|
ASSERT(spa_config_held(spa, SCL_STATE_ALL, RW_WRITER) == SCL_STATE_ALL);
|
|
|
|
if (vd == spa->spa_root_vdev || vd == tvd)
|
|
return (B_TRUE);
|
|
|
|
/*
|
|
* Temporarily mark the device as unreadable, and then determine
|
|
* whether this results in any DTL outages in the top-level vdev.
|
|
* If not, we can safely offline/detach/remove the device.
|
|
*/
|
|
vd->vdev_cant_read = B_TRUE;
|
|
vdev_dtl_reassess(tvd, 0, 0, B_FALSE, B_FALSE);
|
|
required = !vdev_dtl_empty(tvd, DTL_OUTAGE);
|
|
vd->vdev_cant_read = cant_read;
|
|
vdev_dtl_reassess(tvd, 0, 0, B_FALSE, B_FALSE);
|
|
|
|
if (!required && zio_injection_enabled) {
|
|
required = !!zio_handle_device_injection(vd, NULL,
|
|
SET_ERROR(ECHILD));
|
|
}
|
|
|
|
return (required);
|
|
}
|
|
|
|
/*
|
|
* Determine if resilver is needed, and if so the txg range.
|
|
*/
|
|
boolean_t
|
|
vdev_resilver_needed(vdev_t *vd, uint64_t *minp, uint64_t *maxp)
|
|
{
|
|
boolean_t needed = B_FALSE;
|
|
uint64_t thismin = UINT64_MAX;
|
|
uint64_t thismax = 0;
|
|
|
|
if (vd->vdev_children == 0) {
|
|
mutex_enter(&vd->vdev_dtl_lock);
|
|
if (!range_tree_is_empty(vd->vdev_dtl[DTL_MISSING]) &&
|
|
vdev_writeable(vd)) {
|
|
|
|
thismin = vdev_dtl_min(vd);
|
|
thismax = vdev_dtl_max(vd);
|
|
needed = B_TRUE;
|
|
}
|
|
mutex_exit(&vd->vdev_dtl_lock);
|
|
} else {
|
|
for (int c = 0; c < vd->vdev_children; c++) {
|
|
vdev_t *cvd = vd->vdev_child[c];
|
|
uint64_t cmin, cmax;
|
|
|
|
if (vdev_resilver_needed(cvd, &cmin, &cmax)) {
|
|
thismin = MIN(thismin, cmin);
|
|
thismax = MAX(thismax, cmax);
|
|
needed = B_TRUE;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (needed && minp) {
|
|
*minp = thismin;
|
|
*maxp = thismax;
|
|
}
|
|
return (needed);
|
|
}
|
|
|
|
/*
|
|
* Gets the checkpoint space map object from the vdev's ZAP. On success sm_obj
|
|
* will contain either the checkpoint spacemap object or zero if none exists.
|
|
* All other errors are returned to the caller.
|
|
*/
|
|
int
|
|
vdev_checkpoint_sm_object(vdev_t *vd, uint64_t *sm_obj)
|
|
{
|
|
ASSERT0(spa_config_held(vd->vdev_spa, SCL_ALL, RW_WRITER));
|
|
|
|
if (vd->vdev_top_zap == 0) {
|
|
*sm_obj = 0;
|
|
return (0);
|
|
}
|
|
|
|
int error = zap_lookup(spa_meta_objset(vd->vdev_spa), vd->vdev_top_zap,
|
|
VDEV_TOP_ZAP_POOL_CHECKPOINT_SM, sizeof (uint64_t), 1, sm_obj);
|
|
if (error == ENOENT) {
|
|
*sm_obj = 0;
|
|
error = 0;
|
|
}
|
|
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
vdev_load(vdev_t *vd)
|
|
{
|
|
int children = vd->vdev_children;
|
|
int error = 0;
|
|
taskq_t *tq = NULL;
|
|
|
|
/*
|
|
* It's only worthwhile to use the taskq for the root vdev, because the
|
|
* slow part is metaslab_init, and that only happens for top-level
|
|
* vdevs.
|
|
*/
|
|
if (vd->vdev_ops == &vdev_root_ops && vd->vdev_children > 0) {
|
|
tq = taskq_create("vdev_load", children, minclsyspri,
|
|
children, children, TASKQ_PREPOPULATE);
|
|
}
|
|
|
|
/*
|
|
* Recursively load all children.
|
|
*/
|
|
for (int c = 0; c < vd->vdev_children; c++) {
|
|
vdev_t *cvd = vd->vdev_child[c];
|
|
|
|
if (tq == NULL || vdev_uses_zvols(cvd)) {
|
|
cvd->vdev_load_error = vdev_load(cvd);
|
|
} else {
|
|
VERIFY(taskq_dispatch(tq, vdev_load_child,
|
|
cvd, TQ_SLEEP) != TASKQID_INVALID);
|
|
}
|
|
}
|
|
|
|
if (tq != NULL) {
|
|
taskq_wait(tq);
|
|
taskq_destroy(tq);
|
|
}
|
|
|
|
for (int c = 0; c < vd->vdev_children; c++) {
|
|
int error = vd->vdev_child[c]->vdev_load_error;
|
|
|
|
if (error != 0)
|
|
return (error);
|
|
}
|
|
|
|
vdev_set_deflate_ratio(vd);
|
|
|
|
/*
|
|
* On spa_load path, grab the allocation bias from our zap
|
|
*/
|
|
if (vd == vd->vdev_top && vd->vdev_top_zap != 0) {
|
|
spa_t *spa = vd->vdev_spa;
|
|
char bias_str[64];
|
|
|
|
error = zap_lookup(spa->spa_meta_objset, vd->vdev_top_zap,
|
|
VDEV_TOP_ZAP_ALLOCATION_BIAS, 1, sizeof (bias_str),
|
|
bias_str);
|
|
if (error == 0) {
|
|
ASSERT(vd->vdev_alloc_bias == VDEV_BIAS_NONE);
|
|
vd->vdev_alloc_bias = vdev_derive_alloc_bias(bias_str);
|
|
} else if (error != ENOENT) {
|
|
vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN,
|
|
VDEV_AUX_CORRUPT_DATA);
|
|
vdev_dbgmsg(vd, "vdev_load: zap_lookup(top_zap=%llu) "
|
|
"failed [error=%d]", vd->vdev_top_zap, error);
|
|
return (error);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Load any rebuild state from the top-level vdev zap.
|
|
*/
|
|
if (vd == vd->vdev_top && vd->vdev_top_zap != 0) {
|
|
error = vdev_rebuild_load(vd);
|
|
if (error && error != ENOTSUP) {
|
|
vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN,
|
|
VDEV_AUX_CORRUPT_DATA);
|
|
vdev_dbgmsg(vd, "vdev_load: vdev_rebuild_load "
|
|
"failed [error=%d]", error);
|
|
return (error);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* If this is a top-level vdev, initialize its metaslabs.
|
|
*/
|
|
if (vd == vd->vdev_top && vdev_is_concrete(vd)) {
|
|
vdev_metaslab_group_create(vd);
|
|
|
|
if (vd->vdev_ashift == 0 || vd->vdev_asize == 0) {
|
|
vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN,
|
|
VDEV_AUX_CORRUPT_DATA);
|
|
vdev_dbgmsg(vd, "vdev_load: invalid size. ashift=%llu, "
|
|
"asize=%llu", (u_longlong_t)vd->vdev_ashift,
|
|
(u_longlong_t)vd->vdev_asize);
|
|
return (SET_ERROR(ENXIO));
|
|
}
|
|
|
|
error = vdev_metaslab_init(vd, 0);
|
|
if (error != 0) {
|
|
vdev_dbgmsg(vd, "vdev_load: metaslab_init failed "
|
|
"[error=%d]", error);
|
|
vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN,
|
|
VDEV_AUX_CORRUPT_DATA);
|
|
return (error);
|
|
}
|
|
|
|
uint64_t checkpoint_sm_obj;
|
|
error = vdev_checkpoint_sm_object(vd, &checkpoint_sm_obj);
|
|
if (error == 0 && checkpoint_sm_obj != 0) {
|
|
objset_t *mos = spa_meta_objset(vd->vdev_spa);
|
|
ASSERT(vd->vdev_asize != 0);
|
|
ASSERT3P(vd->vdev_checkpoint_sm, ==, NULL);
|
|
|
|
error = space_map_open(&vd->vdev_checkpoint_sm,
|
|
mos, checkpoint_sm_obj, 0, vd->vdev_asize,
|
|
vd->vdev_ashift);
|
|
if (error != 0) {
|
|
vdev_dbgmsg(vd, "vdev_load: space_map_open "
|
|
"failed for checkpoint spacemap (obj %llu) "
|
|
"[error=%d]",
|
|
(u_longlong_t)checkpoint_sm_obj, error);
|
|
return (error);
|
|
}
|
|
ASSERT3P(vd->vdev_checkpoint_sm, !=, NULL);
|
|
|
|
/*
|
|
* Since the checkpoint_sm contains free entries
|
|
* exclusively we can use space_map_allocated() to
|
|
* indicate the cumulative checkpointed space that
|
|
* has been freed.
|
|
*/
|
|
vd->vdev_stat.vs_checkpoint_space =
|
|
-space_map_allocated(vd->vdev_checkpoint_sm);
|
|
vd->vdev_spa->spa_checkpoint_info.sci_dspace +=
|
|
vd->vdev_stat.vs_checkpoint_space;
|
|
} else if (error != 0) {
|
|
vdev_dbgmsg(vd, "vdev_load: failed to retrieve "
|
|
"checkpoint space map object from vdev ZAP "
|
|
"[error=%d]", error);
|
|
return (error);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* If this is a leaf vdev, load its DTL.
|
|
*/
|
|
if (vd->vdev_ops->vdev_op_leaf && (error = vdev_dtl_load(vd)) != 0) {
|
|
vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN,
|
|
VDEV_AUX_CORRUPT_DATA);
|
|
vdev_dbgmsg(vd, "vdev_load: vdev_dtl_load failed "
|
|
"[error=%d]", error);
|
|
return (error);
|
|
}
|
|
|
|
uint64_t obsolete_sm_object;
|
|
error = vdev_obsolete_sm_object(vd, &obsolete_sm_object);
|
|
if (error == 0 && obsolete_sm_object != 0) {
|
|
objset_t *mos = vd->vdev_spa->spa_meta_objset;
|
|
ASSERT(vd->vdev_asize != 0);
|
|
ASSERT3P(vd->vdev_obsolete_sm, ==, NULL);
|
|
|
|
if ((error = space_map_open(&vd->vdev_obsolete_sm, mos,
|
|
obsolete_sm_object, 0, vd->vdev_asize, 0))) {
|
|
vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN,
|
|
VDEV_AUX_CORRUPT_DATA);
|
|
vdev_dbgmsg(vd, "vdev_load: space_map_open failed for "
|
|
"obsolete spacemap (obj %llu) [error=%d]",
|
|
(u_longlong_t)obsolete_sm_object, error);
|
|
return (error);
|
|
}
|
|
} else if (error != 0) {
|
|
vdev_dbgmsg(vd, "vdev_load: failed to retrieve obsolete "
|
|
"space map object from vdev ZAP [error=%d]", error);
|
|
return (error);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* The special vdev case is used for hot spares and l2cache devices. Its
|
|
* sole purpose it to set the vdev state for the associated vdev. To do this,
|
|
* we make sure that we can open the underlying device, then try to read the
|
|
* label, and make sure that the label is sane and that it hasn't been
|
|
* repurposed to another pool.
|
|
*/
|
|
int
|
|
vdev_validate_aux(vdev_t *vd)
|
|
{
|
|
nvlist_t *label;
|
|
uint64_t guid, version;
|
|
uint64_t state;
|
|
|
|
if (!vdev_readable(vd))
|
|
return (0);
|
|
|
|
if ((label = vdev_label_read_config(vd, -1ULL)) == NULL) {
|
|
vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN,
|
|
VDEV_AUX_CORRUPT_DATA);
|
|
return (-1);
|
|
}
|
|
|
|
if (nvlist_lookup_uint64(label, ZPOOL_CONFIG_VERSION, &version) != 0 ||
|
|
!SPA_VERSION_IS_SUPPORTED(version) ||
|
|
nvlist_lookup_uint64(label, ZPOOL_CONFIG_GUID, &guid) != 0 ||
|
|
guid != vd->vdev_guid ||
|
|
nvlist_lookup_uint64(label, ZPOOL_CONFIG_POOL_STATE, &state) != 0) {
|
|
vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN,
|
|
VDEV_AUX_CORRUPT_DATA);
|
|
nvlist_free(label);
|
|
return (-1);
|
|
}
|
|
|
|
/*
|
|
* We don't actually check the pool state here. If it's in fact in
|
|
* use by another pool, we update this fact on the fly when requested.
|
|
*/
|
|
nvlist_free(label);
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
vdev_destroy_ms_flush_data(vdev_t *vd, dmu_tx_t *tx)
|
|
{
|
|
objset_t *mos = spa_meta_objset(vd->vdev_spa);
|
|
|
|
if (vd->vdev_top_zap == 0)
|
|
return;
|
|
|
|
uint64_t object = 0;
|
|
int err = zap_lookup(mos, vd->vdev_top_zap,
|
|
VDEV_TOP_ZAP_MS_UNFLUSHED_PHYS_TXGS, sizeof (uint64_t), 1, &object);
|
|
if (err == ENOENT)
|
|
return;
|
|
VERIFY0(err);
|
|
|
|
VERIFY0(dmu_object_free(mos, object, tx));
|
|
VERIFY0(zap_remove(mos, vd->vdev_top_zap,
|
|
VDEV_TOP_ZAP_MS_UNFLUSHED_PHYS_TXGS, tx));
|
|
}
|
|
|
|
/*
|
|
* Free the objects used to store this vdev's spacemaps, and the array
|
|
* that points to them.
|
|
*/
|
|
void
|
|
vdev_destroy_spacemaps(vdev_t *vd, dmu_tx_t *tx)
|
|
{
|
|
if (vd->vdev_ms_array == 0)
|
|
return;
|
|
|
|
objset_t *mos = vd->vdev_spa->spa_meta_objset;
|
|
uint64_t array_count = vd->vdev_asize >> vd->vdev_ms_shift;
|
|
size_t array_bytes = array_count * sizeof (uint64_t);
|
|
uint64_t *smobj_array = kmem_alloc(array_bytes, KM_SLEEP);
|
|
VERIFY0(dmu_read(mos, vd->vdev_ms_array, 0,
|
|
array_bytes, smobj_array, 0));
|
|
|
|
for (uint64_t i = 0; i < array_count; i++) {
|
|
uint64_t smobj = smobj_array[i];
|
|
if (smobj == 0)
|
|
continue;
|
|
|
|
space_map_free_obj(mos, smobj, tx);
|
|
}
|
|
|
|
kmem_free(smobj_array, array_bytes);
|
|
VERIFY0(dmu_object_free(mos, vd->vdev_ms_array, tx));
|
|
vdev_destroy_ms_flush_data(vd, tx);
|
|
vd->vdev_ms_array = 0;
|
|
}
|
|
|
|
static void
|
|
vdev_remove_empty_log(vdev_t *vd, uint64_t txg)
|
|
{
|
|
spa_t *spa = vd->vdev_spa;
|
|
|
|
ASSERT(vd->vdev_islog);
|
|
ASSERT(vd == vd->vdev_top);
|
|
ASSERT3U(txg, ==, spa_syncing_txg(spa));
|
|
|
|
dmu_tx_t *tx = dmu_tx_create_assigned(spa_get_dsl(spa), txg);
|
|
|
|
vdev_destroy_spacemaps(vd, tx);
|
|
if (vd->vdev_top_zap != 0) {
|
|
vdev_destroy_unlink_zap(vd, vd->vdev_top_zap, tx);
|
|
vd->vdev_top_zap = 0;
|
|
}
|
|
|
|
dmu_tx_commit(tx);
|
|
}
|
|
|
|
void
|
|
vdev_sync_done(vdev_t *vd, uint64_t txg)
|
|
{
|
|
metaslab_t *msp;
|
|
boolean_t reassess = !txg_list_empty(&vd->vdev_ms_list, TXG_CLEAN(txg));
|
|
|
|
ASSERT(vdev_is_concrete(vd));
|
|
|
|
while ((msp = txg_list_remove(&vd->vdev_ms_list, TXG_CLEAN(txg)))
|
|
!= NULL)
|
|
metaslab_sync_done(msp, txg);
|
|
|
|
if (reassess) {
|
|
metaslab_sync_reassess(vd->vdev_mg);
|
|
if (vd->vdev_log_mg != NULL)
|
|
metaslab_sync_reassess(vd->vdev_log_mg);
|
|
}
|
|
}
|
|
|
|
void
|
|
vdev_sync(vdev_t *vd, uint64_t txg)
|
|
{
|
|
spa_t *spa = vd->vdev_spa;
|
|
vdev_t *lvd;
|
|
metaslab_t *msp;
|
|
|
|
ASSERT3U(txg, ==, spa->spa_syncing_txg);
|
|
dmu_tx_t *tx = dmu_tx_create_assigned(spa->spa_dsl_pool, txg);
|
|
if (range_tree_space(vd->vdev_obsolete_segments) > 0) {
|
|
ASSERT(vd->vdev_removing ||
|
|
vd->vdev_ops == &vdev_indirect_ops);
|
|
|
|
vdev_indirect_sync_obsolete(vd, tx);
|
|
|
|
/*
|
|
* If the vdev is indirect, it can't have dirty
|
|
* metaslabs or DTLs.
|
|
*/
|
|
if (vd->vdev_ops == &vdev_indirect_ops) {
|
|
ASSERT(txg_list_empty(&vd->vdev_ms_list, txg));
|
|
ASSERT(txg_list_empty(&vd->vdev_dtl_list, txg));
|
|
dmu_tx_commit(tx);
|
|
return;
|
|
}
|
|
}
|
|
|
|
ASSERT(vdev_is_concrete(vd));
|
|
|
|
if (vd->vdev_ms_array == 0 && vd->vdev_ms_shift != 0 &&
|
|
!vd->vdev_removing) {
|
|
ASSERT(vd == vd->vdev_top);
|
|
ASSERT0(vd->vdev_indirect_config.vic_mapping_object);
|
|
vd->vdev_ms_array = dmu_object_alloc(spa->spa_meta_objset,
|
|
DMU_OT_OBJECT_ARRAY, 0, DMU_OT_NONE, 0, tx);
|
|
ASSERT(vd->vdev_ms_array != 0);
|
|
vdev_config_dirty(vd);
|
|
}
|
|
|
|
while ((msp = txg_list_remove(&vd->vdev_ms_list, txg)) != NULL) {
|
|
metaslab_sync(msp, txg);
|
|
(void) txg_list_add(&vd->vdev_ms_list, msp, TXG_CLEAN(txg));
|
|
}
|
|
|
|
while ((lvd = txg_list_remove(&vd->vdev_dtl_list, txg)) != NULL)
|
|
vdev_dtl_sync(lvd, txg);
|
|
|
|
/*
|
|
* If this is an empty log device being removed, destroy the
|
|
* metadata associated with it.
|
|
*/
|
|
if (vd->vdev_islog && vd->vdev_stat.vs_alloc == 0 && vd->vdev_removing)
|
|
vdev_remove_empty_log(vd, txg);
|
|
|
|
(void) txg_list_add(&spa->spa_vdev_txg_list, vd, TXG_CLEAN(txg));
|
|
dmu_tx_commit(tx);
|
|
}
|
|
|
|
uint64_t
|
|
vdev_psize_to_asize(vdev_t *vd, uint64_t psize)
|
|
{
|
|
return (vd->vdev_ops->vdev_op_asize(vd, psize));
|
|
}
|
|
|
|
/*
|
|
* Mark the given vdev faulted. A faulted vdev behaves as if the device could
|
|
* not be opened, and no I/O is attempted.
|
|
*/
|
|
int
|
|
vdev_fault(spa_t *spa, uint64_t guid, vdev_aux_t aux)
|
|
{
|
|
vdev_t *vd, *tvd;
|
|
|
|
spa_vdev_state_enter(spa, SCL_NONE);
|
|
|
|
if ((vd = spa_lookup_by_guid(spa, guid, B_TRUE)) == NULL)
|
|
return (spa_vdev_state_exit(spa, NULL, SET_ERROR(ENODEV)));
|
|
|
|
if (!vd->vdev_ops->vdev_op_leaf)
|
|
return (spa_vdev_state_exit(spa, NULL, SET_ERROR(ENOTSUP)));
|
|
|
|
tvd = vd->vdev_top;
|
|
|
|
/*
|
|
* If user did a 'zpool offline -f' then make the fault persist across
|
|
* reboots.
|
|
*/
|
|
if (aux == VDEV_AUX_EXTERNAL_PERSIST) {
|
|
/*
|
|
* There are two kinds of forced faults: temporary and
|
|
* persistent. Temporary faults go away at pool import, while
|
|
* persistent faults stay set. Both types of faults can be
|
|
* cleared with a zpool clear.
|
|
*
|
|
* We tell if a vdev is persistently faulted by looking at the
|
|
* ZPOOL_CONFIG_AUX_STATE nvpair. If it's set to "external" at
|
|
* import then it's a persistent fault. Otherwise, it's
|
|
* temporary. We get ZPOOL_CONFIG_AUX_STATE set to "external"
|
|
* by setting vd.vdev_stat.vs_aux to VDEV_AUX_EXTERNAL. This
|
|
* tells vdev_config_generate() (which gets run later) to set
|
|
* ZPOOL_CONFIG_AUX_STATE to "external" in the nvlist.
|
|
*/
|
|
vd->vdev_stat.vs_aux = VDEV_AUX_EXTERNAL;
|
|
vd->vdev_tmpoffline = B_FALSE;
|
|
aux = VDEV_AUX_EXTERNAL;
|
|
} else {
|
|
vd->vdev_tmpoffline = B_TRUE;
|
|
}
|
|
|
|
/*
|
|
* We don't directly use the aux state here, but if we do a
|
|
* vdev_reopen(), we need this value to be present to remember why we
|
|
* were faulted.
|
|
*/
|
|
vd->vdev_label_aux = aux;
|
|
|
|
/*
|
|
* Faulted state takes precedence over degraded.
|
|
*/
|
|
vd->vdev_delayed_close = B_FALSE;
|
|
vd->vdev_faulted = 1ULL;
|
|
vd->vdev_degraded = 0ULL;
|
|
vdev_set_state(vd, B_FALSE, VDEV_STATE_FAULTED, aux);
|
|
|
|
/*
|
|
* If this device has the only valid copy of the data, then
|
|
* back off and simply mark the vdev as degraded instead.
|
|
*/
|
|
if (!tvd->vdev_islog && vd->vdev_aux == NULL && vdev_dtl_required(vd)) {
|
|
vd->vdev_degraded = 1ULL;
|
|
vd->vdev_faulted = 0ULL;
|
|
|
|
/*
|
|
* If we reopen the device and it's not dead, only then do we
|
|
* mark it degraded.
|
|
*/
|
|
vdev_reopen(tvd);
|
|
|
|
if (vdev_readable(vd))
|
|
vdev_set_state(vd, B_FALSE, VDEV_STATE_DEGRADED, aux);
|
|
}
|
|
|
|
return (spa_vdev_state_exit(spa, vd, 0));
|
|
}
|
|
|
|
/*
|
|
* Mark the given vdev degraded. A degraded vdev is purely an indication to the
|
|
* user that something is wrong. The vdev continues to operate as normal as far
|
|
* as I/O is concerned.
|
|
*/
|
|
int
|
|
vdev_degrade(spa_t *spa, uint64_t guid, vdev_aux_t aux)
|
|
{
|
|
vdev_t *vd;
|
|
|
|
spa_vdev_state_enter(spa, SCL_NONE);
|
|
|
|
if ((vd = spa_lookup_by_guid(spa, guid, B_TRUE)) == NULL)
|
|
return (spa_vdev_state_exit(spa, NULL, SET_ERROR(ENODEV)));
|
|
|
|
if (!vd->vdev_ops->vdev_op_leaf)
|
|
return (spa_vdev_state_exit(spa, NULL, SET_ERROR(ENOTSUP)));
|
|
|
|
/*
|
|
* If the vdev is already faulted, then don't do anything.
|
|
*/
|
|
if (vd->vdev_faulted || vd->vdev_degraded)
|
|
return (spa_vdev_state_exit(spa, NULL, 0));
|
|
|
|
vd->vdev_degraded = 1ULL;
|
|
if (!vdev_is_dead(vd))
|
|
vdev_set_state(vd, B_FALSE, VDEV_STATE_DEGRADED,
|
|
aux);
|
|
|
|
return (spa_vdev_state_exit(spa, vd, 0));
|
|
}
|
|
|
|
int
|
|
vdev_remove_wanted(spa_t *spa, uint64_t guid)
|
|
{
|
|
vdev_t *vd;
|
|
|
|
spa_vdev_state_enter(spa, SCL_NONE);
|
|
|
|
if ((vd = spa_lookup_by_guid(spa, guid, B_TRUE)) == NULL)
|
|
return (spa_vdev_state_exit(spa, NULL, SET_ERROR(ENODEV)));
|
|
|
|
/*
|
|
* If the vdev is already removed, or expanding which can trigger
|
|
* repartition add/remove events, then don't do anything.
|
|
*/
|
|
if (vd->vdev_removed || vd->vdev_expanding)
|
|
return (spa_vdev_state_exit(spa, NULL, 0));
|
|
|
|
/*
|
|
* Confirm the vdev has been removed, otherwise don't do anything.
|
|
*/
|
|
if (vd->vdev_ops->vdev_op_leaf && !zio_wait(vdev_probe(vd, NULL)))
|
|
return (spa_vdev_state_exit(spa, NULL, SET_ERROR(EEXIST)));
|
|
|
|
vd->vdev_remove_wanted = B_TRUE;
|
|
spa_async_request(spa, SPA_ASYNC_REMOVE);
|
|
|
|
return (spa_vdev_state_exit(spa, vd, 0));
|
|
}
|
|
|
|
|
|
/*
|
|
* Online the given vdev.
|
|
*
|
|
* If 'ZFS_ONLINE_UNSPARE' is set, it implies two things. First, any attached
|
|
* spare device should be detached when the device finishes resilvering.
|
|
* Second, the online should be treated like a 'test' online case, so no FMA
|
|
* events are generated if the device fails to open.
|
|
*/
|
|
int
|
|
vdev_online(spa_t *spa, uint64_t guid, uint64_t flags, vdev_state_t *newstate)
|
|
{
|
|
vdev_t *vd, *tvd, *pvd, *rvd = spa->spa_root_vdev;
|
|
boolean_t wasoffline;
|
|
vdev_state_t oldstate;
|
|
|
|
spa_vdev_state_enter(spa, SCL_NONE);
|
|
|
|
if ((vd = spa_lookup_by_guid(spa, guid, B_TRUE)) == NULL)
|
|
return (spa_vdev_state_exit(spa, NULL, SET_ERROR(ENODEV)));
|
|
|
|
if (!vd->vdev_ops->vdev_op_leaf)
|
|
return (spa_vdev_state_exit(spa, NULL, SET_ERROR(ENOTSUP)));
|
|
|
|
wasoffline = (vd->vdev_offline || vd->vdev_tmpoffline);
|
|
oldstate = vd->vdev_state;
|
|
|
|
tvd = vd->vdev_top;
|
|
vd->vdev_offline = B_FALSE;
|
|
vd->vdev_tmpoffline = B_FALSE;
|
|
vd->vdev_checkremove = !!(flags & ZFS_ONLINE_CHECKREMOVE);
|
|
vd->vdev_forcefault = !!(flags & ZFS_ONLINE_FORCEFAULT);
|
|
|
|
/* XXX - L2ARC 1.0 does not support expansion */
|
|
if (!vd->vdev_aux) {
|
|
for (pvd = vd; pvd != rvd; pvd = pvd->vdev_parent)
|
|
pvd->vdev_expanding = !!((flags & ZFS_ONLINE_EXPAND) ||
|
|
spa->spa_autoexpand);
|
|
vd->vdev_expansion_time = gethrestime_sec();
|
|
}
|
|
|
|
vdev_reopen(tvd);
|
|
vd->vdev_checkremove = vd->vdev_forcefault = B_FALSE;
|
|
|
|
if (!vd->vdev_aux) {
|
|
for (pvd = vd; pvd != rvd; pvd = pvd->vdev_parent)
|
|
pvd->vdev_expanding = B_FALSE;
|
|
}
|
|
|
|
if (newstate)
|
|
*newstate = vd->vdev_state;
|
|
if ((flags & ZFS_ONLINE_UNSPARE) &&
|
|
!vdev_is_dead(vd) && vd->vdev_parent &&
|
|
vd->vdev_parent->vdev_ops == &vdev_spare_ops &&
|
|
vd->vdev_parent->vdev_child[0] == vd)
|
|
vd->vdev_unspare = B_TRUE;
|
|
|
|
if ((flags & ZFS_ONLINE_EXPAND) || spa->spa_autoexpand) {
|
|
|
|
/* XXX - L2ARC 1.0 does not support expansion */
|
|
if (vd->vdev_aux)
|
|
return (spa_vdev_state_exit(spa, vd, ENOTSUP));
|
|
spa_async_request(spa, SPA_ASYNC_CONFIG_UPDATE);
|
|
}
|
|
|
|
/* Restart initializing if necessary */
|
|
mutex_enter(&vd->vdev_initialize_lock);
|
|
if (vdev_writeable(vd) &&
|
|
vd->vdev_initialize_thread == NULL &&
|
|
vd->vdev_initialize_state == VDEV_INITIALIZE_ACTIVE) {
|
|
(void) vdev_initialize(vd);
|
|
}
|
|
mutex_exit(&vd->vdev_initialize_lock);
|
|
|
|
/*
|
|
* Restart trimming if necessary. We do not restart trimming for cache
|
|
* devices here. This is triggered by l2arc_rebuild_vdev()
|
|
* asynchronously for the whole device or in l2arc_evict() as it evicts
|
|
* space for upcoming writes.
|
|
*/
|
|
mutex_enter(&vd->vdev_trim_lock);
|
|
if (vdev_writeable(vd) && !vd->vdev_isl2cache &&
|
|
vd->vdev_trim_thread == NULL &&
|
|
vd->vdev_trim_state == VDEV_TRIM_ACTIVE) {
|
|
(void) vdev_trim(vd, vd->vdev_trim_rate, vd->vdev_trim_partial,
|
|
vd->vdev_trim_secure);
|
|
}
|
|
mutex_exit(&vd->vdev_trim_lock);
|
|
|
|
if (wasoffline ||
|
|
(oldstate < VDEV_STATE_DEGRADED &&
|
|
vd->vdev_state >= VDEV_STATE_DEGRADED)) {
|
|
spa_event_notify(spa, vd, NULL, ESC_ZFS_VDEV_ONLINE);
|
|
|
|
/*
|
|
* Asynchronously detach spare vdev if resilver or
|
|
* rebuild is not required
|
|
*/
|
|
if (vd->vdev_unspare &&
|
|
!dsl_scan_resilvering(spa->spa_dsl_pool) &&
|
|
!dsl_scan_resilver_scheduled(spa->spa_dsl_pool) &&
|
|
!vdev_rebuild_active(tvd))
|
|
spa_async_request(spa, SPA_ASYNC_DETACH_SPARE);
|
|
}
|
|
return (spa_vdev_state_exit(spa, vd, 0));
|
|
}
|
|
|
|
static int
|
|
vdev_offline_locked(spa_t *spa, uint64_t guid, uint64_t flags)
|
|
{
|
|
vdev_t *vd, *tvd;
|
|
int error = 0;
|
|
uint64_t generation;
|
|
metaslab_group_t *mg;
|
|
|
|
top:
|
|
spa_vdev_state_enter(spa, SCL_ALLOC);
|
|
|
|
if ((vd = spa_lookup_by_guid(spa, guid, B_TRUE)) == NULL)
|
|
return (spa_vdev_state_exit(spa, NULL, SET_ERROR(ENODEV)));
|
|
|
|
if (!vd->vdev_ops->vdev_op_leaf)
|
|
return (spa_vdev_state_exit(spa, NULL, SET_ERROR(ENOTSUP)));
|
|
|
|
if (vd->vdev_ops == &vdev_draid_spare_ops)
|
|
return (spa_vdev_state_exit(spa, NULL, ENOTSUP));
|
|
|
|
tvd = vd->vdev_top;
|
|
mg = tvd->vdev_mg;
|
|
generation = spa->spa_config_generation + 1;
|
|
|
|
/*
|
|
* If the device isn't already offline, try to offline it.
|
|
*/
|
|
if (!vd->vdev_offline) {
|
|
/*
|
|
* If this device has the only valid copy of some data,
|
|
* don't allow it to be offlined. Log devices are always
|
|
* expendable.
|
|
*/
|
|
if (!tvd->vdev_islog && vd->vdev_aux == NULL &&
|
|
vdev_dtl_required(vd))
|
|
return (spa_vdev_state_exit(spa, NULL,
|
|
SET_ERROR(EBUSY)));
|
|
|
|
/*
|
|
* If the top-level is a slog and it has had allocations
|
|
* then proceed. We check that the vdev's metaslab group
|
|
* is not NULL since it's possible that we may have just
|
|
* added this vdev but not yet initialized its metaslabs.
|
|
*/
|
|
if (tvd->vdev_islog && mg != NULL) {
|
|
/*
|
|
* Prevent any future allocations.
|
|
*/
|
|
ASSERT3P(tvd->vdev_log_mg, ==, NULL);
|
|
metaslab_group_passivate(mg);
|
|
(void) spa_vdev_state_exit(spa, vd, 0);
|
|
|
|
error = spa_reset_logs(spa);
|
|
|
|
/*
|
|
* If the log device was successfully reset but has
|
|
* checkpointed data, do not offline it.
|
|
*/
|
|
if (error == 0 &&
|
|
tvd->vdev_checkpoint_sm != NULL) {
|
|
ASSERT3U(space_map_allocated(
|
|
tvd->vdev_checkpoint_sm), !=, 0);
|
|
error = ZFS_ERR_CHECKPOINT_EXISTS;
|
|
}
|
|
|
|
spa_vdev_state_enter(spa, SCL_ALLOC);
|
|
|
|
/*
|
|
* Check to see if the config has changed.
|
|
*/
|
|
if (error || generation != spa->spa_config_generation) {
|
|
metaslab_group_activate(mg);
|
|
if (error)
|
|
return (spa_vdev_state_exit(spa,
|
|
vd, error));
|
|
(void) spa_vdev_state_exit(spa, vd, 0);
|
|
goto top;
|
|
}
|
|
ASSERT0(tvd->vdev_stat.vs_alloc);
|
|
}
|
|
|
|
/*
|
|
* Offline this device and reopen its top-level vdev.
|
|
* If the top-level vdev is a log device then just offline
|
|
* it. Otherwise, if this action results in the top-level
|
|
* vdev becoming unusable, undo it and fail the request.
|
|
*/
|
|
vd->vdev_offline = B_TRUE;
|
|
vdev_reopen(tvd);
|
|
|
|
if (!tvd->vdev_islog && vd->vdev_aux == NULL &&
|
|
vdev_is_dead(tvd)) {
|
|
vd->vdev_offline = B_FALSE;
|
|
vdev_reopen(tvd);
|
|
return (spa_vdev_state_exit(spa, NULL,
|
|
SET_ERROR(EBUSY)));
|
|
}
|
|
|
|
/*
|
|
* Add the device back into the metaslab rotor so that
|
|
* once we online the device it's open for business.
|
|
*/
|
|
if (tvd->vdev_islog && mg != NULL)
|
|
metaslab_group_activate(mg);
|
|
}
|
|
|
|
vd->vdev_tmpoffline = !!(flags & ZFS_OFFLINE_TEMPORARY);
|
|
|
|
return (spa_vdev_state_exit(spa, vd, 0));
|
|
}
|
|
|
|
int
|
|
vdev_offline(spa_t *spa, uint64_t guid, uint64_t flags)
|
|
{
|
|
int error;
|
|
|
|
mutex_enter(&spa->spa_vdev_top_lock);
|
|
error = vdev_offline_locked(spa, guid, flags);
|
|
mutex_exit(&spa->spa_vdev_top_lock);
|
|
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Clear the error counts associated with this vdev. Unlike vdev_online() and
|
|
* vdev_offline(), we assume the spa config is locked. We also clear all
|
|
* children. If 'vd' is NULL, then the user wants to clear all vdevs.
|
|
*/
|
|
void
|
|
vdev_clear(spa_t *spa, vdev_t *vd)
|
|
{
|
|
vdev_t *rvd = spa->spa_root_vdev;
|
|
|
|
ASSERT(spa_config_held(spa, SCL_STATE_ALL, RW_WRITER) == SCL_STATE_ALL);
|
|
|
|
if (vd == NULL)
|
|
vd = rvd;
|
|
|
|
vd->vdev_stat.vs_read_errors = 0;
|
|
vd->vdev_stat.vs_write_errors = 0;
|
|
vd->vdev_stat.vs_checksum_errors = 0;
|
|
vd->vdev_stat.vs_slow_ios = 0;
|
|
|
|
for (int c = 0; c < vd->vdev_children; c++)
|
|
vdev_clear(spa, vd->vdev_child[c]);
|
|
|
|
/*
|
|
* It makes no sense to "clear" an indirect or removed vdev.
|
|
*/
|
|
if (!vdev_is_concrete(vd) || vd->vdev_removed)
|
|
return;
|
|
|
|
/*
|
|
* If we're in the FAULTED state or have experienced failed I/O, then
|
|
* clear the persistent state and attempt to reopen the device. We
|
|
* also mark the vdev config dirty, so that the new faulted state is
|
|
* written out to disk.
|
|
*/
|
|
if (vd->vdev_faulted || vd->vdev_degraded ||
|
|
!vdev_readable(vd) || !vdev_writeable(vd)) {
|
|
/*
|
|
* When reopening in response to a clear event, it may be due to
|
|
* a fmadm repair request. In this case, if the device is
|
|
* still broken, we want to still post the ereport again.
|
|
*/
|
|
vd->vdev_forcefault = B_TRUE;
|
|
|
|
vd->vdev_faulted = vd->vdev_degraded = 0ULL;
|
|
vd->vdev_cant_read = B_FALSE;
|
|
vd->vdev_cant_write = B_FALSE;
|
|
vd->vdev_stat.vs_aux = 0;
|
|
|
|
vdev_reopen(vd == rvd ? rvd : vd->vdev_top);
|
|
|
|
vd->vdev_forcefault = B_FALSE;
|
|
|
|
if (vd != rvd && vdev_writeable(vd->vdev_top))
|
|
vdev_state_dirty(vd->vdev_top);
|
|
|
|
/* If a resilver isn't required, check if vdevs can be culled */
|
|
if (vd->vdev_aux == NULL && !vdev_is_dead(vd) &&
|
|
!dsl_scan_resilvering(spa->spa_dsl_pool) &&
|
|
!dsl_scan_resilver_scheduled(spa->spa_dsl_pool))
|
|
spa_async_request(spa, SPA_ASYNC_RESILVER_DONE);
|
|
|
|
spa_event_notify(spa, vd, NULL, ESC_ZFS_VDEV_CLEAR);
|
|
}
|
|
|
|
/*
|
|
* When clearing a FMA-diagnosed fault, we always want to
|
|
* unspare the device, as we assume that the original spare was
|
|
* done in response to the FMA fault.
|
|
*/
|
|
if (!vdev_is_dead(vd) && vd->vdev_parent != NULL &&
|
|
vd->vdev_parent->vdev_ops == &vdev_spare_ops &&
|
|
vd->vdev_parent->vdev_child[0] == vd)
|
|
vd->vdev_unspare = B_TRUE;
|
|
|
|
/* Clear recent error events cache (i.e. duplicate events tracking) */
|
|
zfs_ereport_clear(spa, vd);
|
|
}
|
|
|
|
boolean_t
|
|
vdev_is_dead(vdev_t *vd)
|
|
{
|
|
/*
|
|
* Holes and missing devices are always considered "dead".
|
|
* This simplifies the code since we don't have to check for
|
|
* these types of devices in the various code paths.
|
|
* Instead we rely on the fact that we skip over dead devices
|
|
* before issuing I/O to them.
|
|
*/
|
|
return (vd->vdev_state < VDEV_STATE_DEGRADED ||
|
|
vd->vdev_ops == &vdev_hole_ops ||
|
|
vd->vdev_ops == &vdev_missing_ops);
|
|
}
|
|
|
|
boolean_t
|
|
vdev_readable(vdev_t *vd)
|
|
{
|
|
return (!vdev_is_dead(vd) && !vd->vdev_cant_read);
|
|
}
|
|
|
|
boolean_t
|
|
vdev_writeable(vdev_t *vd)
|
|
{
|
|
return (!vdev_is_dead(vd) && !vd->vdev_cant_write &&
|
|
vdev_is_concrete(vd));
|
|
}
|
|
|
|
boolean_t
|
|
vdev_allocatable(vdev_t *vd)
|
|
{
|
|
uint64_t state = vd->vdev_state;
|
|
|
|
/*
|
|
* We currently allow allocations from vdevs which may be in the
|
|
* process of reopening (i.e. VDEV_STATE_CLOSED). If the device
|
|
* fails to reopen then we'll catch it later when we're holding
|
|
* the proper locks. Note that we have to get the vdev state
|
|
* in a local variable because although it changes atomically,
|
|
* we're asking two separate questions about it.
|
|
*/
|
|
return (!(state < VDEV_STATE_DEGRADED && state != VDEV_STATE_CLOSED) &&
|
|
!vd->vdev_cant_write && vdev_is_concrete(vd) &&
|
|
vd->vdev_mg->mg_initialized);
|
|
}
|
|
|
|
boolean_t
|
|
vdev_accessible(vdev_t *vd, zio_t *zio)
|
|
{
|
|
ASSERT(zio->io_vd == vd);
|
|
|
|
if (vdev_is_dead(vd) || vd->vdev_remove_wanted)
|
|
return (B_FALSE);
|
|
|
|
if (zio->io_type == ZIO_TYPE_READ)
|
|
return (!vd->vdev_cant_read);
|
|
|
|
if (zio->io_type == ZIO_TYPE_WRITE)
|
|
return (!vd->vdev_cant_write);
|
|
|
|
return (B_TRUE);
|
|
}
|
|
|
|
static void
|
|
vdev_get_child_stat(vdev_t *cvd, vdev_stat_t *vs, vdev_stat_t *cvs)
|
|
{
|
|
/*
|
|
* Exclude the dRAID spare when aggregating to avoid double counting
|
|
* the ops and bytes. These IOs are counted by the physical leaves.
|
|
*/
|
|
if (cvd->vdev_ops == &vdev_draid_spare_ops)
|
|
return;
|
|
|
|
for (int t = 0; t < VS_ZIO_TYPES; t++) {
|
|
vs->vs_ops[t] += cvs->vs_ops[t];
|
|
vs->vs_bytes[t] += cvs->vs_bytes[t];
|
|
}
|
|
|
|
cvs->vs_scan_removing = cvd->vdev_removing;
|
|
}
|
|
|
|
/*
|
|
* Get extended stats
|
|
*/
|
|
static void
|
|
vdev_get_child_stat_ex(vdev_t *cvd, vdev_stat_ex_t *vsx, vdev_stat_ex_t *cvsx)
|
|
{
|
|
(void) cvd;
|
|
|
|
int t, b;
|
|
for (t = 0; t < ZIO_TYPES; t++) {
|
|
for (b = 0; b < ARRAY_SIZE(vsx->vsx_disk_histo[0]); b++)
|
|
vsx->vsx_disk_histo[t][b] += cvsx->vsx_disk_histo[t][b];
|
|
|
|
for (b = 0; b < ARRAY_SIZE(vsx->vsx_total_histo[0]); b++) {
|
|
vsx->vsx_total_histo[t][b] +=
|
|
cvsx->vsx_total_histo[t][b];
|
|
}
|
|
}
|
|
|
|
for (t = 0; t < ZIO_PRIORITY_NUM_QUEUEABLE; t++) {
|
|
for (b = 0; b < ARRAY_SIZE(vsx->vsx_queue_histo[0]); b++) {
|
|
vsx->vsx_queue_histo[t][b] +=
|
|
cvsx->vsx_queue_histo[t][b];
|
|
}
|
|
vsx->vsx_active_queue[t] += cvsx->vsx_active_queue[t];
|
|
vsx->vsx_pend_queue[t] += cvsx->vsx_pend_queue[t];
|
|
|
|
for (b = 0; b < ARRAY_SIZE(vsx->vsx_ind_histo[0]); b++)
|
|
vsx->vsx_ind_histo[t][b] += cvsx->vsx_ind_histo[t][b];
|
|
|
|
for (b = 0; b < ARRAY_SIZE(vsx->vsx_agg_histo[0]); b++)
|
|
vsx->vsx_agg_histo[t][b] += cvsx->vsx_agg_histo[t][b];
|
|
}
|
|
|
|
}
|
|
|
|
boolean_t
|
|
vdev_is_spacemap_addressable(vdev_t *vd)
|
|
{
|
|
if (spa_feature_is_active(vd->vdev_spa, SPA_FEATURE_SPACEMAP_V2))
|
|
return (B_TRUE);
|
|
|
|
/*
|
|
* If double-word space map entries are not enabled we assume
|
|
* 47 bits of the space map entry are dedicated to the entry's
|
|
* offset (see SM_OFFSET_BITS in space_map.h). We then use that
|
|
* to calculate the maximum address that can be described by a
|
|
* space map entry for the given device.
|
|
*/
|
|
uint64_t shift = vd->vdev_ashift + SM_OFFSET_BITS;
|
|
|
|
if (shift >= 63) /* detect potential overflow */
|
|
return (B_TRUE);
|
|
|
|
return (vd->vdev_asize < (1ULL << shift));
|
|
}
|
|
|
|
/*
|
|
* Get statistics for the given vdev.
|
|
*/
|
|
static void
|
|
vdev_get_stats_ex_impl(vdev_t *vd, vdev_stat_t *vs, vdev_stat_ex_t *vsx)
|
|
{
|
|
int t;
|
|
/*
|
|
* If we're getting stats on the root vdev, aggregate the I/O counts
|
|
* over all top-level vdevs (i.e. the direct children of the root).
|
|
*/
|
|
if (!vd->vdev_ops->vdev_op_leaf) {
|
|
if (vs) {
|
|
memset(vs->vs_ops, 0, sizeof (vs->vs_ops));
|
|
memset(vs->vs_bytes, 0, sizeof (vs->vs_bytes));
|
|
}
|
|
if (vsx)
|
|
memset(vsx, 0, sizeof (*vsx));
|
|
|
|
for (int c = 0; c < vd->vdev_children; c++) {
|
|
vdev_t *cvd = vd->vdev_child[c];
|
|
vdev_stat_t *cvs = &cvd->vdev_stat;
|
|
vdev_stat_ex_t *cvsx = &cvd->vdev_stat_ex;
|
|
|
|
vdev_get_stats_ex_impl(cvd, cvs, cvsx);
|
|
if (vs)
|
|
vdev_get_child_stat(cvd, vs, cvs);
|
|
if (vsx)
|
|
vdev_get_child_stat_ex(cvd, vsx, cvsx);
|
|
}
|
|
} else {
|
|
/*
|
|
* We're a leaf. Just copy our ZIO active queue stats in. The
|
|
* other leaf stats are updated in vdev_stat_update().
|
|
*/
|
|
if (!vsx)
|
|
return;
|
|
|
|
memcpy(vsx, &vd->vdev_stat_ex, sizeof (vd->vdev_stat_ex));
|
|
|
|
for (t = 0; t < ARRAY_SIZE(vd->vdev_queue.vq_class); t++) {
|
|
vsx->vsx_active_queue[t] =
|
|
vd->vdev_queue.vq_class[t].vqc_active;
|
|
vsx->vsx_pend_queue[t] = avl_numnodes(
|
|
&vd->vdev_queue.vq_class[t].vqc_queued_tree);
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
vdev_get_stats_ex(vdev_t *vd, vdev_stat_t *vs, vdev_stat_ex_t *vsx)
|
|
{
|
|
vdev_t *tvd = vd->vdev_top;
|
|
mutex_enter(&vd->vdev_stat_lock);
|
|
if (vs) {
|
|
bcopy(&vd->vdev_stat, vs, sizeof (*vs));
|
|
vs->vs_timestamp = gethrtime() - vs->vs_timestamp;
|
|
vs->vs_state = vd->vdev_state;
|
|
vs->vs_rsize = vdev_get_min_asize(vd);
|
|
|
|
if (vd->vdev_ops->vdev_op_leaf) {
|
|
vs->vs_pspace = vd->vdev_psize;
|
|
vs->vs_rsize += VDEV_LABEL_START_SIZE +
|
|
VDEV_LABEL_END_SIZE;
|
|
/*
|
|
* Report initializing progress. Since we don't
|
|
* have the initializing locks held, this is only
|
|
* an estimate (although a fairly accurate one).
|
|
*/
|
|
vs->vs_initialize_bytes_done =
|
|
vd->vdev_initialize_bytes_done;
|
|
vs->vs_initialize_bytes_est =
|
|
vd->vdev_initialize_bytes_est;
|
|
vs->vs_initialize_state = vd->vdev_initialize_state;
|
|
vs->vs_initialize_action_time =
|
|
vd->vdev_initialize_action_time;
|
|
|
|
/*
|
|
* Report manual TRIM progress. Since we don't have
|
|
* the manual TRIM locks held, this is only an
|
|
* estimate (although fairly accurate one).
|
|
*/
|
|
vs->vs_trim_notsup = !vd->vdev_has_trim;
|
|
vs->vs_trim_bytes_done = vd->vdev_trim_bytes_done;
|
|
vs->vs_trim_bytes_est = vd->vdev_trim_bytes_est;
|
|
vs->vs_trim_state = vd->vdev_trim_state;
|
|
vs->vs_trim_action_time = vd->vdev_trim_action_time;
|
|
|
|
/* Set when there is a deferred resilver. */
|
|
vs->vs_resilver_deferred = vd->vdev_resilver_deferred;
|
|
}
|
|
|
|
/*
|
|
* Report expandable space on top-level, non-auxiliary devices
|
|
* only. The expandable space is reported in terms of metaslab
|
|
* sized units since that determines how much space the pool
|
|
* can expand.
|
|
*/
|
|
if (vd->vdev_aux == NULL && tvd != NULL) {
|
|
vs->vs_esize = P2ALIGN(
|
|
vd->vdev_max_asize - vd->vdev_asize,
|
|
1ULL << tvd->vdev_ms_shift);
|
|
}
|
|
|
|
vs->vs_configured_ashift = vd->vdev_top != NULL
|
|
? vd->vdev_top->vdev_ashift : vd->vdev_ashift;
|
|
vs->vs_logical_ashift = vd->vdev_logical_ashift;
|
|
if (vd->vdev_physical_ashift <= ASHIFT_MAX)
|
|
vs->vs_physical_ashift = vd->vdev_physical_ashift;
|
|
else
|
|
vs->vs_physical_ashift = 0;
|
|
|
|
/*
|
|
* Report fragmentation and rebuild progress for top-level,
|
|
* non-auxiliary, concrete devices.
|
|
*/
|
|
if (vd->vdev_aux == NULL && vd == vd->vdev_top &&
|
|
vdev_is_concrete(vd)) {
|
|
/*
|
|
* The vdev fragmentation rating doesn't take into
|
|
* account the embedded slog metaslab (vdev_log_mg).
|
|
* Since it's only one metaslab, it would have a tiny
|
|
* impact on the overall fragmentation.
|
|
*/
|
|
vs->vs_fragmentation = (vd->vdev_mg != NULL) ?
|
|
vd->vdev_mg->mg_fragmentation : 0;
|
|
}
|
|
}
|
|
|
|
vdev_get_stats_ex_impl(vd, vs, vsx);
|
|
mutex_exit(&vd->vdev_stat_lock);
|
|
}
|
|
|
|
void
|
|
vdev_get_stats(vdev_t *vd, vdev_stat_t *vs)
|
|
{
|
|
return (vdev_get_stats_ex(vd, vs, NULL));
|
|
}
|
|
|
|
void
|
|
vdev_clear_stats(vdev_t *vd)
|
|
{
|
|
mutex_enter(&vd->vdev_stat_lock);
|
|
vd->vdev_stat.vs_space = 0;
|
|
vd->vdev_stat.vs_dspace = 0;
|
|
vd->vdev_stat.vs_alloc = 0;
|
|
mutex_exit(&vd->vdev_stat_lock);
|
|
}
|
|
|
|
void
|
|
vdev_scan_stat_init(vdev_t *vd)
|
|
{
|
|
vdev_stat_t *vs = &vd->vdev_stat;
|
|
|
|
for (int c = 0; c < vd->vdev_children; c++)
|
|
vdev_scan_stat_init(vd->vdev_child[c]);
|
|
|
|
mutex_enter(&vd->vdev_stat_lock);
|
|
vs->vs_scan_processed = 0;
|
|
mutex_exit(&vd->vdev_stat_lock);
|
|
}
|
|
|
|
void
|
|
vdev_stat_update(zio_t *zio, uint64_t psize)
|
|
{
|
|
spa_t *spa = zio->io_spa;
|
|
vdev_t *rvd = spa->spa_root_vdev;
|
|
vdev_t *vd = zio->io_vd ? zio->io_vd : rvd;
|
|
vdev_t *pvd;
|
|
uint64_t txg = zio->io_txg;
|
|
vdev_stat_t *vs = &vd->vdev_stat;
|
|
vdev_stat_ex_t *vsx = &vd->vdev_stat_ex;
|
|
zio_type_t type = zio->io_type;
|
|
int flags = zio->io_flags;
|
|
|
|
/*
|
|
* If this i/o is a gang leader, it didn't do any actual work.
|
|
*/
|
|
if (zio->io_gang_tree)
|
|
return;
|
|
|
|
if (zio->io_error == 0) {
|
|
/*
|
|
* If this is a root i/o, don't count it -- we've already
|
|
* counted the top-level vdevs, and vdev_get_stats() will
|
|
* aggregate them when asked. This reduces contention on
|
|
* the root vdev_stat_lock and implicitly handles blocks
|
|
* that compress away to holes, for which there is no i/o.
|
|
* (Holes never create vdev children, so all the counters
|
|
* remain zero, which is what we want.)
|
|
*
|
|
* Note: this only applies to successful i/o (io_error == 0)
|
|
* because unlike i/o counts, errors are not additive.
|
|
* When reading a ditto block, for example, failure of
|
|
* one top-level vdev does not imply a root-level error.
|
|
*/
|
|
if (vd == rvd)
|
|
return;
|
|
|
|
ASSERT(vd == zio->io_vd);
|
|
|
|
if (flags & ZIO_FLAG_IO_BYPASS)
|
|
return;
|
|
|
|
mutex_enter(&vd->vdev_stat_lock);
|
|
|
|
if (flags & ZIO_FLAG_IO_REPAIR) {
|
|
/*
|
|
* Repair is the result of a resilver issued by the
|
|
* scan thread (spa_sync).
|
|
*/
|
|
if (flags & ZIO_FLAG_SCAN_THREAD) {
|
|
dsl_scan_t *scn = spa->spa_dsl_pool->dp_scan;
|
|
dsl_scan_phys_t *scn_phys = &scn->scn_phys;
|
|
uint64_t *processed = &scn_phys->scn_processed;
|
|
|
|
if (vd->vdev_ops->vdev_op_leaf)
|
|
atomic_add_64(processed, psize);
|
|
vs->vs_scan_processed += psize;
|
|
}
|
|
|
|
/*
|
|
* Repair is the result of a rebuild issued by the
|
|
* rebuild thread (vdev_rebuild_thread). To avoid
|
|
* double counting repaired bytes the virtual dRAID
|
|
* spare vdev is excluded from the processed bytes.
|
|
*/
|
|
if (zio->io_priority == ZIO_PRIORITY_REBUILD) {
|
|
vdev_t *tvd = vd->vdev_top;
|
|
vdev_rebuild_t *vr = &tvd->vdev_rebuild_config;
|
|
vdev_rebuild_phys_t *vrp = &vr->vr_rebuild_phys;
|
|
uint64_t *rebuilt = &vrp->vrp_bytes_rebuilt;
|
|
|
|
if (vd->vdev_ops->vdev_op_leaf &&
|
|
vd->vdev_ops != &vdev_draid_spare_ops) {
|
|
atomic_add_64(rebuilt, psize);
|
|
}
|
|
vs->vs_rebuild_processed += psize;
|
|
}
|
|
|
|
if (flags & ZIO_FLAG_SELF_HEAL)
|
|
vs->vs_self_healed += psize;
|
|
}
|
|
|
|
/*
|
|
* The bytes/ops/histograms are recorded at the leaf level and
|
|
* aggregated into the higher level vdevs in vdev_get_stats().
|
|
*/
|
|
if (vd->vdev_ops->vdev_op_leaf &&
|
|
(zio->io_priority < ZIO_PRIORITY_NUM_QUEUEABLE)) {
|
|
zio_type_t vs_type = type;
|
|
zio_priority_t priority = zio->io_priority;
|
|
|
|
/*
|
|
* TRIM ops and bytes are reported to user space as
|
|
* ZIO_TYPE_IOCTL. This is done to preserve the
|
|
* vdev_stat_t structure layout for user space.
|
|
*/
|
|
if (type == ZIO_TYPE_TRIM)
|
|
vs_type = ZIO_TYPE_IOCTL;
|
|
|
|
/*
|
|
* Solely for the purposes of 'zpool iostat -lqrw'
|
|
* reporting use the priority to categorize the IO.
|
|
* Only the following are reported to user space:
|
|
*
|
|
* ZIO_PRIORITY_SYNC_READ,
|
|
* ZIO_PRIORITY_SYNC_WRITE,
|
|
* ZIO_PRIORITY_ASYNC_READ,
|
|
* ZIO_PRIORITY_ASYNC_WRITE,
|
|
* ZIO_PRIORITY_SCRUB,
|
|
* ZIO_PRIORITY_TRIM.
|
|
*/
|
|
if (priority == ZIO_PRIORITY_REBUILD) {
|
|
priority = ((type == ZIO_TYPE_WRITE) ?
|
|
ZIO_PRIORITY_ASYNC_WRITE :
|
|
ZIO_PRIORITY_SCRUB);
|
|
} else if (priority == ZIO_PRIORITY_INITIALIZING) {
|
|
ASSERT3U(type, ==, ZIO_TYPE_WRITE);
|
|
priority = ZIO_PRIORITY_ASYNC_WRITE;
|
|
} else if (priority == ZIO_PRIORITY_REMOVAL) {
|
|
priority = ((type == ZIO_TYPE_WRITE) ?
|
|
ZIO_PRIORITY_ASYNC_WRITE :
|
|
ZIO_PRIORITY_ASYNC_READ);
|
|
}
|
|
|
|
vs->vs_ops[vs_type]++;
|
|
vs->vs_bytes[vs_type] += psize;
|
|
|
|
if (flags & ZIO_FLAG_DELEGATED) {
|
|
vsx->vsx_agg_histo[priority]
|
|
[RQ_HISTO(zio->io_size)]++;
|
|
} else {
|
|
vsx->vsx_ind_histo[priority]
|
|
[RQ_HISTO(zio->io_size)]++;
|
|
}
|
|
|
|
if (zio->io_delta && zio->io_delay) {
|
|
vsx->vsx_queue_histo[priority]
|
|
[L_HISTO(zio->io_delta - zio->io_delay)]++;
|
|
vsx->vsx_disk_histo[type]
|
|
[L_HISTO(zio->io_delay)]++;
|
|
vsx->vsx_total_histo[type]
|
|
[L_HISTO(zio->io_delta)]++;
|
|
}
|
|
}
|
|
|
|
mutex_exit(&vd->vdev_stat_lock);
|
|
return;
|
|
}
|
|
|
|
if (flags & ZIO_FLAG_SPECULATIVE)
|
|
return;
|
|
|
|
/*
|
|
* If this is an I/O error that is going to be retried, then ignore the
|
|
* error. Otherwise, the user may interpret B_FAILFAST I/O errors as
|
|
* hard errors, when in reality they can happen for any number of
|
|
* innocuous reasons (bus resets, MPxIO link failure, etc).
|
|
*/
|
|
if (zio->io_error == EIO &&
|
|
!(zio->io_flags & ZIO_FLAG_IO_RETRY))
|
|
return;
|
|
|
|
/*
|
|
* Intent logs writes won't propagate their error to the root
|
|
* I/O so don't mark these types of failures as pool-level
|
|
* errors.
|
|
*/
|
|
if (zio->io_vd == NULL && (zio->io_flags & ZIO_FLAG_DONT_PROPAGATE))
|
|
return;
|
|
|
|
if (type == ZIO_TYPE_WRITE && txg != 0 &&
|
|
(!(flags & ZIO_FLAG_IO_REPAIR) ||
|
|
(flags & ZIO_FLAG_SCAN_THREAD) ||
|
|
spa->spa_claiming)) {
|
|
/*
|
|
* This is either a normal write (not a repair), or it's
|
|
* a repair induced by the scrub thread, or it's a repair
|
|
* made by zil_claim() during spa_load() in the first txg.
|
|
* In the normal case, we commit the DTL change in the same
|
|
* txg as the block was born. In the scrub-induced repair
|
|
* case, we know that scrubs run in first-pass syncing context,
|
|
* so we commit the DTL change in spa_syncing_txg(spa).
|
|
* In the zil_claim() case, we commit in spa_first_txg(spa).
|
|
*
|
|
* We currently do not make DTL entries for failed spontaneous
|
|
* self-healing writes triggered by normal (non-scrubbing)
|
|
* reads, because we have no transactional context in which to
|
|
* do so -- and it's not clear that it'd be desirable anyway.
|
|
*/
|
|
if (vd->vdev_ops->vdev_op_leaf) {
|
|
uint64_t commit_txg = txg;
|
|
if (flags & ZIO_FLAG_SCAN_THREAD) {
|
|
ASSERT(flags & ZIO_FLAG_IO_REPAIR);
|
|
ASSERT(spa_sync_pass(spa) == 1);
|
|
vdev_dtl_dirty(vd, DTL_SCRUB, txg, 1);
|
|
commit_txg = spa_syncing_txg(spa);
|
|
} else if (spa->spa_claiming) {
|
|
ASSERT(flags & ZIO_FLAG_IO_REPAIR);
|
|
commit_txg = spa_first_txg(spa);
|
|
}
|
|
ASSERT(commit_txg >= spa_syncing_txg(spa));
|
|
if (vdev_dtl_contains(vd, DTL_MISSING, txg, 1))
|
|
return;
|
|
for (pvd = vd; pvd != rvd; pvd = pvd->vdev_parent)
|
|
vdev_dtl_dirty(pvd, DTL_PARTIAL, txg, 1);
|
|
vdev_dirty(vd->vdev_top, VDD_DTL, vd, commit_txg);
|
|
}
|
|
if (vd != rvd)
|
|
vdev_dtl_dirty(vd, DTL_MISSING, txg, 1);
|
|
}
|
|
}
|
|
|
|
int64_t
|
|
vdev_deflated_space(vdev_t *vd, int64_t space)
|
|
{
|
|
ASSERT((space & (SPA_MINBLOCKSIZE-1)) == 0);
|
|
ASSERT(vd->vdev_deflate_ratio != 0 || vd->vdev_isl2cache);
|
|
|
|
return ((space >> SPA_MINBLOCKSHIFT) * vd->vdev_deflate_ratio);
|
|
}
|
|
|
|
/*
|
|
* Update the in-core space usage stats for this vdev, its metaslab class,
|
|
* and the root vdev.
|
|
*/
|
|
void
|
|
vdev_space_update(vdev_t *vd, int64_t alloc_delta, int64_t defer_delta,
|
|
int64_t space_delta)
|
|
{
|
|
(void) defer_delta;
|
|
int64_t dspace_delta;
|
|
spa_t *spa = vd->vdev_spa;
|
|
vdev_t *rvd = spa->spa_root_vdev;
|
|
|
|
ASSERT(vd == vd->vdev_top);
|
|
|
|
/*
|
|
* Apply the inverse of the psize-to-asize (ie. RAID-Z) space-expansion
|
|
* factor. We must calculate this here and not at the root vdev
|
|
* because the root vdev's psize-to-asize is simply the max of its
|
|
* children's, thus not accurate enough for us.
|
|
*/
|
|
dspace_delta = vdev_deflated_space(vd, space_delta);
|
|
|
|
mutex_enter(&vd->vdev_stat_lock);
|
|
/* ensure we won't underflow */
|
|
if (alloc_delta < 0) {
|
|
ASSERT3U(vd->vdev_stat.vs_alloc, >=, -alloc_delta);
|
|
}
|
|
|
|
vd->vdev_stat.vs_alloc += alloc_delta;
|
|
vd->vdev_stat.vs_space += space_delta;
|
|
vd->vdev_stat.vs_dspace += dspace_delta;
|
|
mutex_exit(&vd->vdev_stat_lock);
|
|
|
|
/* every class but log contributes to root space stats */
|
|
if (vd->vdev_mg != NULL && !vd->vdev_islog) {
|
|
ASSERT(!vd->vdev_isl2cache);
|
|
mutex_enter(&rvd->vdev_stat_lock);
|
|
rvd->vdev_stat.vs_alloc += alloc_delta;
|
|
rvd->vdev_stat.vs_space += space_delta;
|
|
rvd->vdev_stat.vs_dspace += dspace_delta;
|
|
mutex_exit(&rvd->vdev_stat_lock);
|
|
}
|
|
/* Note: metaslab_class_space_update moved to metaslab_space_update */
|
|
}
|
|
|
|
/*
|
|
* Mark a top-level vdev's config as dirty, placing it on the dirty list
|
|
* so that it will be written out next time the vdev configuration is synced.
|
|
* If the root vdev is specified (vdev_top == NULL), dirty all top-level vdevs.
|
|
*/
|
|
void
|
|
vdev_config_dirty(vdev_t *vd)
|
|
{
|
|
spa_t *spa = vd->vdev_spa;
|
|
vdev_t *rvd = spa->spa_root_vdev;
|
|
int c;
|
|
|
|
ASSERT(spa_writeable(spa));
|
|
|
|
/*
|
|
* If this is an aux vdev (as with l2cache and spare devices), then we
|
|
* update the vdev config manually and set the sync flag.
|
|
*/
|
|
if (vd->vdev_aux != NULL) {
|
|
spa_aux_vdev_t *sav = vd->vdev_aux;
|
|
nvlist_t **aux;
|
|
uint_t naux;
|
|
|
|
for (c = 0; c < sav->sav_count; c++) {
|
|
if (sav->sav_vdevs[c] == vd)
|
|
break;
|
|
}
|
|
|
|
if (c == sav->sav_count) {
|
|
/*
|
|
* We're being removed. There's nothing more to do.
|
|
*/
|
|
ASSERT(sav->sav_sync == B_TRUE);
|
|
return;
|
|
}
|
|
|
|
sav->sav_sync = B_TRUE;
|
|
|
|
if (nvlist_lookup_nvlist_array(sav->sav_config,
|
|
ZPOOL_CONFIG_L2CACHE, &aux, &naux) != 0) {
|
|
VERIFY(nvlist_lookup_nvlist_array(sav->sav_config,
|
|
ZPOOL_CONFIG_SPARES, &aux, &naux) == 0);
|
|
}
|
|
|
|
ASSERT(c < naux);
|
|
|
|
/*
|
|
* Setting the nvlist in the middle if the array is a little
|
|
* sketchy, but it will work.
|
|
*/
|
|
nvlist_free(aux[c]);
|
|
aux[c] = vdev_config_generate(spa, vd, B_TRUE, 0);
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* The dirty list is protected by the SCL_CONFIG lock. The caller
|
|
* must either hold SCL_CONFIG as writer, or must be the sync thread
|
|
* (which holds SCL_CONFIG as reader). There's only one sync thread,
|
|
* so this is sufficient to ensure mutual exclusion.
|
|
*/
|
|
ASSERT(spa_config_held(spa, SCL_CONFIG, RW_WRITER) ||
|
|
(dsl_pool_sync_context(spa_get_dsl(spa)) &&
|
|
spa_config_held(spa, SCL_CONFIG, RW_READER)));
|
|
|
|
if (vd == rvd) {
|
|
for (c = 0; c < rvd->vdev_children; c++)
|
|
vdev_config_dirty(rvd->vdev_child[c]);
|
|
} else {
|
|
ASSERT(vd == vd->vdev_top);
|
|
|
|
if (!list_link_active(&vd->vdev_config_dirty_node) &&
|
|
vdev_is_concrete(vd)) {
|
|
list_insert_head(&spa->spa_config_dirty_list, vd);
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
vdev_config_clean(vdev_t *vd)
|
|
{
|
|
spa_t *spa = vd->vdev_spa;
|
|
|
|
ASSERT(spa_config_held(spa, SCL_CONFIG, RW_WRITER) ||
|
|
(dsl_pool_sync_context(spa_get_dsl(spa)) &&
|
|
spa_config_held(spa, SCL_CONFIG, RW_READER)));
|
|
|
|
ASSERT(list_link_active(&vd->vdev_config_dirty_node));
|
|
list_remove(&spa->spa_config_dirty_list, vd);
|
|
}
|
|
|
|
/*
|
|
* Mark a top-level vdev's state as dirty, so that the next pass of
|
|
* spa_sync() can convert this into vdev_config_dirty(). We distinguish
|
|
* the state changes from larger config changes because they require
|
|
* much less locking, and are often needed for administrative actions.
|
|
*/
|
|
void
|
|
vdev_state_dirty(vdev_t *vd)
|
|
{
|
|
spa_t *spa = vd->vdev_spa;
|
|
|
|
ASSERT(spa_writeable(spa));
|
|
ASSERT(vd == vd->vdev_top);
|
|
|
|
/*
|
|
* The state list is protected by the SCL_STATE lock. The caller
|
|
* must either hold SCL_STATE as writer, or must be the sync thread
|
|
* (which holds SCL_STATE as reader). There's only one sync thread,
|
|
* so this is sufficient to ensure mutual exclusion.
|
|
*/
|
|
ASSERT(spa_config_held(spa, SCL_STATE, RW_WRITER) ||
|
|
(dsl_pool_sync_context(spa_get_dsl(spa)) &&
|
|
spa_config_held(spa, SCL_STATE, RW_READER)));
|
|
|
|
if (!list_link_active(&vd->vdev_state_dirty_node) &&
|
|
vdev_is_concrete(vd))
|
|
list_insert_head(&spa->spa_state_dirty_list, vd);
|
|
}
|
|
|
|
void
|
|
vdev_state_clean(vdev_t *vd)
|
|
{
|
|
spa_t *spa = vd->vdev_spa;
|
|
|
|
ASSERT(spa_config_held(spa, SCL_STATE, RW_WRITER) ||
|
|
(dsl_pool_sync_context(spa_get_dsl(spa)) &&
|
|
spa_config_held(spa, SCL_STATE, RW_READER)));
|
|
|
|
ASSERT(list_link_active(&vd->vdev_state_dirty_node));
|
|
list_remove(&spa->spa_state_dirty_list, vd);
|
|
}
|
|
|
|
/*
|
|
* Propagate vdev state up from children to parent.
|
|
*/
|
|
void
|
|
vdev_propagate_state(vdev_t *vd)
|
|
{
|
|
spa_t *spa = vd->vdev_spa;
|
|
vdev_t *rvd = spa->spa_root_vdev;
|
|
int degraded = 0, faulted = 0;
|
|
int corrupted = 0;
|
|
vdev_t *child;
|
|
|
|
if (vd->vdev_children > 0) {
|
|
for (int c = 0; c < vd->vdev_children; c++) {
|
|
child = vd->vdev_child[c];
|
|
|
|
/*
|
|
* Don't factor holes or indirect vdevs into the
|
|
* decision.
|
|
*/
|
|
if (!vdev_is_concrete(child))
|
|
continue;
|
|
|
|
if (!vdev_readable(child) ||
|
|
(!vdev_writeable(child) && spa_writeable(spa))) {
|
|
/*
|
|
* Root special: if there is a top-level log
|
|
* device, treat the root vdev as if it were
|
|
* degraded.
|
|
*/
|
|
if (child->vdev_islog && vd == rvd)
|
|
degraded++;
|
|
else
|
|
faulted++;
|
|
} else if (child->vdev_state <= VDEV_STATE_DEGRADED) {
|
|
degraded++;
|
|
}
|
|
|
|
if (child->vdev_stat.vs_aux == VDEV_AUX_CORRUPT_DATA)
|
|
corrupted++;
|
|
}
|
|
|
|
vd->vdev_ops->vdev_op_state_change(vd, faulted, degraded);
|
|
|
|
/*
|
|
* Root special: if there is a top-level vdev that cannot be
|
|
* opened due to corrupted metadata, then propagate the root
|
|
* vdev's aux state as 'corrupt' rather than 'insufficient
|
|
* replicas'.
|
|
*/
|
|
if (corrupted && vd == rvd &&
|
|
rvd->vdev_state == VDEV_STATE_CANT_OPEN)
|
|
vdev_set_state(rvd, B_FALSE, VDEV_STATE_CANT_OPEN,
|
|
VDEV_AUX_CORRUPT_DATA);
|
|
}
|
|
|
|
if (vd->vdev_parent)
|
|
vdev_propagate_state(vd->vdev_parent);
|
|
}
|
|
|
|
/*
|
|
* Set a vdev's state. If this is during an open, we don't update the parent
|
|
* state, because we're in the process of opening children depth-first.
|
|
* Otherwise, we propagate the change to the parent.
|
|
*
|
|
* If this routine places a device in a faulted state, an appropriate ereport is
|
|
* generated.
|
|
*/
|
|
void
|
|
vdev_set_state(vdev_t *vd, boolean_t isopen, vdev_state_t state, vdev_aux_t aux)
|
|
{
|
|
uint64_t save_state;
|
|
spa_t *spa = vd->vdev_spa;
|
|
|
|
if (state == vd->vdev_state) {
|
|
/*
|
|
* Since vdev_offline() code path is already in an offline
|
|
* state we can miss a statechange event to OFFLINE. Check
|
|
* the previous state to catch this condition.
|
|
*/
|
|
if (vd->vdev_ops->vdev_op_leaf &&
|
|
(state == VDEV_STATE_OFFLINE) &&
|
|
(vd->vdev_prevstate >= VDEV_STATE_FAULTED)) {
|
|
/* post an offline state change */
|
|
zfs_post_state_change(spa, vd, vd->vdev_prevstate);
|
|
}
|
|
vd->vdev_stat.vs_aux = aux;
|
|
return;
|
|
}
|
|
|
|
save_state = vd->vdev_state;
|
|
|
|
vd->vdev_state = state;
|
|
vd->vdev_stat.vs_aux = aux;
|
|
|
|
/*
|
|
* If we are setting the vdev state to anything but an open state, then
|
|
* always close the underlying device unless the device has requested
|
|
* a delayed close (i.e. we're about to remove or fault the device).
|
|
* Otherwise, we keep accessible but invalid devices open forever.
|
|
* We don't call vdev_close() itself, because that implies some extra
|
|
* checks (offline, etc) that we don't want here. This is limited to
|
|
* leaf devices, because otherwise closing the device will affect other
|
|
* children.
|
|
*/
|
|
if (!vd->vdev_delayed_close && vdev_is_dead(vd) &&
|
|
vd->vdev_ops->vdev_op_leaf)
|
|
vd->vdev_ops->vdev_op_close(vd);
|
|
|
|
if (vd->vdev_removed &&
|
|
state == VDEV_STATE_CANT_OPEN &&
|
|
(aux == VDEV_AUX_OPEN_FAILED || vd->vdev_checkremove)) {
|
|
/*
|
|
* If the previous state is set to VDEV_STATE_REMOVED, then this
|
|
* device was previously marked removed and someone attempted to
|
|
* reopen it. If this failed due to a nonexistent device, then
|
|
* keep the device in the REMOVED state. We also let this be if
|
|
* it is one of our special test online cases, which is only
|
|
* attempting to online the device and shouldn't generate an FMA
|
|
* fault.
|
|
*/
|
|
vd->vdev_state = VDEV_STATE_REMOVED;
|
|
vd->vdev_stat.vs_aux = VDEV_AUX_NONE;
|
|
} else if (state == VDEV_STATE_REMOVED) {
|
|
vd->vdev_removed = B_TRUE;
|
|
} else if (state == VDEV_STATE_CANT_OPEN) {
|
|
/*
|
|
* If we fail to open a vdev during an import or recovery, we
|
|
* mark it as "not available", which signifies that it was
|
|
* never there to begin with. Failure to open such a device
|
|
* is not considered an error.
|
|
*/
|
|
if ((spa_load_state(spa) == SPA_LOAD_IMPORT ||
|
|
spa_load_state(spa) == SPA_LOAD_RECOVER) &&
|
|
vd->vdev_ops->vdev_op_leaf)
|
|
vd->vdev_not_present = 1;
|
|
|
|
/*
|
|
* Post the appropriate ereport. If the 'prevstate' field is
|
|
* set to something other than VDEV_STATE_UNKNOWN, it indicates
|
|
* that this is part of a vdev_reopen(). In this case, we don't
|
|
* want to post the ereport if the device was already in the
|
|
* CANT_OPEN state beforehand.
|
|
*
|
|
* If the 'checkremove' flag is set, then this is an attempt to
|
|
* online the device in response to an insertion event. If we
|
|
* hit this case, then we have detected an insertion event for a
|
|
* faulted or offline device that wasn't in the removed state.
|
|
* In this scenario, we don't post an ereport because we are
|
|
* about to replace the device, or attempt an online with
|
|
* vdev_forcefault, which will generate the fault for us.
|
|
*/
|
|
if ((vd->vdev_prevstate != state || vd->vdev_forcefault) &&
|
|
!vd->vdev_not_present && !vd->vdev_checkremove &&
|
|
vd != spa->spa_root_vdev) {
|
|
const char *class;
|
|
|
|
switch (aux) {
|
|
case VDEV_AUX_OPEN_FAILED:
|
|
class = FM_EREPORT_ZFS_DEVICE_OPEN_FAILED;
|
|
break;
|
|
case VDEV_AUX_CORRUPT_DATA:
|
|
class = FM_EREPORT_ZFS_DEVICE_CORRUPT_DATA;
|
|
break;
|
|
case VDEV_AUX_NO_REPLICAS:
|
|
class = FM_EREPORT_ZFS_DEVICE_NO_REPLICAS;
|
|
break;
|
|
case VDEV_AUX_BAD_GUID_SUM:
|
|
class = FM_EREPORT_ZFS_DEVICE_BAD_GUID_SUM;
|
|
break;
|
|
case VDEV_AUX_TOO_SMALL:
|
|
class = FM_EREPORT_ZFS_DEVICE_TOO_SMALL;
|
|
break;
|
|
case VDEV_AUX_BAD_LABEL:
|
|
class = FM_EREPORT_ZFS_DEVICE_BAD_LABEL;
|
|
break;
|
|
case VDEV_AUX_BAD_ASHIFT:
|
|
class = FM_EREPORT_ZFS_DEVICE_BAD_ASHIFT;
|
|
break;
|
|
default:
|
|
class = FM_EREPORT_ZFS_DEVICE_UNKNOWN;
|
|
}
|
|
|
|
(void) zfs_ereport_post(class, spa, vd, NULL, NULL,
|
|
save_state);
|
|
}
|
|
|
|
/* Erase any notion of persistent removed state */
|
|
vd->vdev_removed = B_FALSE;
|
|
} else {
|
|
vd->vdev_removed = B_FALSE;
|
|
}
|
|
|
|
/*
|
|
* Notify ZED of any significant state-change on a leaf vdev.
|
|
*
|
|
*/
|
|
if (vd->vdev_ops->vdev_op_leaf) {
|
|
/* preserve original state from a vdev_reopen() */
|
|
if ((vd->vdev_prevstate != VDEV_STATE_UNKNOWN) &&
|
|
(vd->vdev_prevstate != vd->vdev_state) &&
|
|
(save_state <= VDEV_STATE_CLOSED))
|
|
save_state = vd->vdev_prevstate;
|
|
|
|
/* filter out state change due to initial vdev_open */
|
|
if (save_state > VDEV_STATE_CLOSED)
|
|
zfs_post_state_change(spa, vd, save_state);
|
|
}
|
|
|
|
if (!isopen && vd->vdev_parent)
|
|
vdev_propagate_state(vd->vdev_parent);
|
|
}
|
|
|
|
boolean_t
|
|
vdev_children_are_offline(vdev_t *vd)
|
|
{
|
|
ASSERT(!vd->vdev_ops->vdev_op_leaf);
|
|
|
|
for (uint64_t i = 0; i < vd->vdev_children; i++) {
|
|
if (vd->vdev_child[i]->vdev_state != VDEV_STATE_OFFLINE)
|
|
return (B_FALSE);
|
|
}
|
|
|
|
return (B_TRUE);
|
|
}
|
|
|
|
/*
|
|
* Check the vdev configuration to ensure that it's capable of supporting
|
|
* a root pool. We do not support partial configuration.
|
|
*/
|
|
boolean_t
|
|
vdev_is_bootable(vdev_t *vd)
|
|
{
|
|
if (!vd->vdev_ops->vdev_op_leaf) {
|
|
const char *vdev_type = vd->vdev_ops->vdev_op_type;
|
|
|
|
if (strcmp(vdev_type, VDEV_TYPE_MISSING) == 0)
|
|
return (B_FALSE);
|
|
}
|
|
|
|
for (int c = 0; c < vd->vdev_children; c++) {
|
|
if (!vdev_is_bootable(vd->vdev_child[c]))
|
|
return (B_FALSE);
|
|
}
|
|
return (B_TRUE);
|
|
}
|
|
|
|
boolean_t
|
|
vdev_is_concrete(vdev_t *vd)
|
|
{
|
|
vdev_ops_t *ops = vd->vdev_ops;
|
|
if (ops == &vdev_indirect_ops || ops == &vdev_hole_ops ||
|
|
ops == &vdev_missing_ops || ops == &vdev_root_ops) {
|
|
return (B_FALSE);
|
|
} else {
|
|
return (B_TRUE);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Determine if a log device has valid content. If the vdev was
|
|
* removed or faulted in the MOS config then we know that
|
|
* the content on the log device has already been written to the pool.
|
|
*/
|
|
boolean_t
|
|
vdev_log_state_valid(vdev_t *vd)
|
|
{
|
|
if (vd->vdev_ops->vdev_op_leaf && !vd->vdev_faulted &&
|
|
!vd->vdev_removed)
|
|
return (B_TRUE);
|
|
|
|
for (int c = 0; c < vd->vdev_children; c++)
|
|
if (vdev_log_state_valid(vd->vdev_child[c]))
|
|
return (B_TRUE);
|
|
|
|
return (B_FALSE);
|
|
}
|
|
|
|
/*
|
|
* Expand a vdev if possible.
|
|
*/
|
|
void
|
|
vdev_expand(vdev_t *vd, uint64_t txg)
|
|
{
|
|
ASSERT(vd->vdev_top == vd);
|
|
ASSERT(spa_config_held(vd->vdev_spa, SCL_ALL, RW_WRITER) == SCL_ALL);
|
|
ASSERT(vdev_is_concrete(vd));
|
|
|
|
vdev_set_deflate_ratio(vd);
|
|
|
|
if ((vd->vdev_asize >> vd->vdev_ms_shift) > vd->vdev_ms_count &&
|
|
vdev_is_concrete(vd)) {
|
|
vdev_metaslab_group_create(vd);
|
|
VERIFY(vdev_metaslab_init(vd, txg) == 0);
|
|
vdev_config_dirty(vd);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Split a vdev.
|
|
*/
|
|
void
|
|
vdev_split(vdev_t *vd)
|
|
{
|
|
vdev_t *cvd, *pvd = vd->vdev_parent;
|
|
|
|
vdev_remove_child(pvd, vd);
|
|
vdev_compact_children(pvd);
|
|
|
|
cvd = pvd->vdev_child[0];
|
|
if (pvd->vdev_children == 1) {
|
|
vdev_remove_parent(cvd);
|
|
cvd->vdev_splitting = B_TRUE;
|
|
}
|
|
vdev_propagate_state(cvd);
|
|
}
|
|
|
|
void
|
|
vdev_deadman(vdev_t *vd, char *tag)
|
|
{
|
|
for (int c = 0; c < vd->vdev_children; c++) {
|
|
vdev_t *cvd = vd->vdev_child[c];
|
|
|
|
vdev_deadman(cvd, tag);
|
|
}
|
|
|
|
if (vd->vdev_ops->vdev_op_leaf) {
|
|
vdev_queue_t *vq = &vd->vdev_queue;
|
|
|
|
mutex_enter(&vq->vq_lock);
|
|
if (avl_numnodes(&vq->vq_active_tree) > 0) {
|
|
spa_t *spa = vd->vdev_spa;
|
|
zio_t *fio;
|
|
uint64_t delta;
|
|
|
|
zfs_dbgmsg("slow vdev: %s has %lu active IOs",
|
|
vd->vdev_path, avl_numnodes(&vq->vq_active_tree));
|
|
|
|
/*
|
|
* Look at the head of all the pending queues,
|
|
* if any I/O has been outstanding for longer than
|
|
* the spa_deadman_synctime invoke the deadman logic.
|
|
*/
|
|
fio = avl_first(&vq->vq_active_tree);
|
|
delta = gethrtime() - fio->io_timestamp;
|
|
if (delta > spa_deadman_synctime(spa))
|
|
zio_deadman(fio, tag);
|
|
}
|
|
mutex_exit(&vq->vq_lock);
|
|
}
|
|
}
|
|
|
|
void
|
|
vdev_defer_resilver(vdev_t *vd)
|
|
{
|
|
ASSERT(vd->vdev_ops->vdev_op_leaf);
|
|
|
|
vd->vdev_resilver_deferred = B_TRUE;
|
|
vd->vdev_spa->spa_resilver_deferred = B_TRUE;
|
|
}
|
|
|
|
/*
|
|
* Clears the resilver deferred flag on all leaf devs under vd. Returns
|
|
* B_TRUE if we have devices that need to be resilvered and are available to
|
|
* accept resilver I/Os.
|
|
*/
|
|
boolean_t
|
|
vdev_clear_resilver_deferred(vdev_t *vd, dmu_tx_t *tx)
|
|
{
|
|
boolean_t resilver_needed = B_FALSE;
|
|
spa_t *spa = vd->vdev_spa;
|
|
|
|
for (int c = 0; c < vd->vdev_children; c++) {
|
|
vdev_t *cvd = vd->vdev_child[c];
|
|
resilver_needed |= vdev_clear_resilver_deferred(cvd, tx);
|
|
}
|
|
|
|
if (vd == spa->spa_root_vdev &&
|
|
spa_feature_is_active(spa, SPA_FEATURE_RESILVER_DEFER)) {
|
|
spa_feature_decr(spa, SPA_FEATURE_RESILVER_DEFER, tx);
|
|
vdev_config_dirty(vd);
|
|
spa->spa_resilver_deferred = B_FALSE;
|
|
return (resilver_needed);
|
|
}
|
|
|
|
if (!vdev_is_concrete(vd) || vd->vdev_aux ||
|
|
!vd->vdev_ops->vdev_op_leaf)
|
|
return (resilver_needed);
|
|
|
|
vd->vdev_resilver_deferred = B_FALSE;
|
|
|
|
return (!vdev_is_dead(vd) && !vd->vdev_offline &&
|
|
vdev_resilver_needed(vd, NULL, NULL));
|
|
}
|
|
|
|
boolean_t
|
|
vdev_xlate_is_empty(range_seg64_t *rs)
|
|
{
|
|
return (rs->rs_start == rs->rs_end);
|
|
}
|
|
|
|
/*
|
|
* Translate a logical range to the first contiguous physical range for the
|
|
* specified vdev_t. This function is initially called with a leaf vdev and
|
|
* will walk each parent vdev until it reaches a top-level vdev. Once the
|
|
* top-level is reached the physical range is initialized and the recursive
|
|
* function begins to unwind. As it unwinds it calls the parent's vdev
|
|
* specific translation function to do the real conversion.
|
|
*/
|
|
void
|
|
vdev_xlate(vdev_t *vd, const range_seg64_t *logical_rs,
|
|
range_seg64_t *physical_rs, range_seg64_t *remain_rs)
|
|
{
|
|
/*
|
|
* Walk up the vdev tree
|
|
*/
|
|
if (vd != vd->vdev_top) {
|
|
vdev_xlate(vd->vdev_parent, logical_rs, physical_rs,
|
|
remain_rs);
|
|
} else {
|
|
/*
|
|
* We've reached the top-level vdev, initialize the physical
|
|
* range to the logical range and set an empty remaining
|
|
* range then start to unwind.
|
|
*/
|
|
physical_rs->rs_start = logical_rs->rs_start;
|
|
physical_rs->rs_end = logical_rs->rs_end;
|
|
|
|
remain_rs->rs_start = logical_rs->rs_start;
|
|
remain_rs->rs_end = logical_rs->rs_start;
|
|
|
|
return;
|
|
}
|
|
|
|
vdev_t *pvd = vd->vdev_parent;
|
|
ASSERT3P(pvd, !=, NULL);
|
|
ASSERT3P(pvd->vdev_ops->vdev_op_xlate, !=, NULL);
|
|
|
|
/*
|
|
* As this recursive function unwinds, translate the logical
|
|
* range into its physical and any remaining components by calling
|
|
* the vdev specific translate function.
|
|
*/
|
|
range_seg64_t intermediate = { 0 };
|
|
pvd->vdev_ops->vdev_op_xlate(vd, physical_rs, &intermediate, remain_rs);
|
|
|
|
physical_rs->rs_start = intermediate.rs_start;
|
|
physical_rs->rs_end = intermediate.rs_end;
|
|
}
|
|
|
|
void
|
|
vdev_xlate_walk(vdev_t *vd, const range_seg64_t *logical_rs,
|
|
vdev_xlate_func_t *func, void *arg)
|
|
{
|
|
range_seg64_t iter_rs = *logical_rs;
|
|
range_seg64_t physical_rs;
|
|
range_seg64_t remain_rs;
|
|
|
|
while (!vdev_xlate_is_empty(&iter_rs)) {
|
|
|
|
vdev_xlate(vd, &iter_rs, &physical_rs, &remain_rs);
|
|
|
|
/*
|
|
* With raidz and dRAID, it's possible that the logical range
|
|
* does not live on this leaf vdev. Only when there is a non-
|
|
* zero physical size call the provided function.
|
|
*/
|
|
if (!vdev_xlate_is_empty(&physical_rs))
|
|
func(arg, &physical_rs);
|
|
|
|
iter_rs = remain_rs;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Look at the vdev tree and determine whether any devices are currently being
|
|
* replaced.
|
|
*/
|
|
boolean_t
|
|
vdev_replace_in_progress(vdev_t *vdev)
|
|
{
|
|
ASSERT(spa_config_held(vdev->vdev_spa, SCL_ALL, RW_READER) != 0);
|
|
|
|
if (vdev->vdev_ops == &vdev_replacing_ops)
|
|
return (B_TRUE);
|
|
|
|
/*
|
|
* A 'spare' vdev indicates that we have a replace in progress, unless
|
|
* it has exactly two children, and the second, the hot spare, has
|
|
* finished being resilvered.
|
|
*/
|
|
if (vdev->vdev_ops == &vdev_spare_ops && (vdev->vdev_children > 2 ||
|
|
!vdev_dtl_empty(vdev->vdev_child[1], DTL_MISSING)))
|
|
return (B_TRUE);
|
|
|
|
for (int i = 0; i < vdev->vdev_children; i++) {
|
|
if (vdev_replace_in_progress(vdev->vdev_child[i]))
|
|
return (B_TRUE);
|
|
}
|
|
|
|
return (B_FALSE);
|
|
}
|
|
|
|
EXPORT_SYMBOL(vdev_fault);
|
|
EXPORT_SYMBOL(vdev_degrade);
|
|
EXPORT_SYMBOL(vdev_online);
|
|
EXPORT_SYMBOL(vdev_offline);
|
|
EXPORT_SYMBOL(vdev_clear);
|
|
|
|
/* BEGIN CSTYLED */
|
|
ZFS_MODULE_PARAM(zfs_vdev, zfs_vdev_, default_ms_count, INT, ZMOD_RW,
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"Target number of metaslabs per top-level vdev");
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ZFS_MODULE_PARAM(zfs_vdev, zfs_vdev_, default_ms_shift, INT, ZMOD_RW,
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"Default limit for metaslab size");
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ZFS_MODULE_PARAM(zfs_vdev, zfs_vdev_, min_ms_count, INT, ZMOD_RW,
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"Minimum number of metaslabs per top-level vdev");
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ZFS_MODULE_PARAM(zfs_vdev, zfs_vdev_, ms_count_limit, INT, ZMOD_RW,
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"Practical upper limit of total metaslabs per top-level vdev");
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ZFS_MODULE_PARAM(zfs, zfs_, slow_io_events_per_second, UINT, ZMOD_RW,
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|
"Rate limit slow IO (delay) events to this many per second");
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|
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ZFS_MODULE_PARAM(zfs, zfs_, checksum_events_per_second, UINT, ZMOD_RW,
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|
"Rate limit checksum events to this many checksum errors per second "
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|
"(do not set below zed threshold).");
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|
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ZFS_MODULE_PARAM(zfs, zfs_, scan_ignore_errors, INT, ZMOD_RW,
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|
"Ignore errors during resilver/scrub");
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|
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ZFS_MODULE_PARAM(zfs_vdev, vdev_, validate_skip, INT, ZMOD_RW,
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|
"Bypass vdev_validate()");
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|
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ZFS_MODULE_PARAM(zfs, zfs_, nocacheflush, INT, ZMOD_RW,
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|
"Disable cache flushes");
|
|
|
|
ZFS_MODULE_PARAM(zfs, zfs_, embedded_slog_min_ms, INT, ZMOD_RW,
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|
"Minimum number of metaslabs required to dedicate one for log blocks");
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|
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ZFS_MODULE_PARAM_CALL(zfs_vdev, zfs_vdev_, min_auto_ashift,
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param_set_min_auto_ashift, param_get_ulong, ZMOD_RW,
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|
"Minimum ashift used when creating new top-level vdevs");
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|
|
|
ZFS_MODULE_PARAM_CALL(zfs_vdev, zfs_vdev_, max_auto_ashift,
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param_set_max_auto_ashift, param_get_ulong, ZMOD_RW,
|
|
"Maximum ashift used when optimizing for logical -> physical sector "
|
|
"size on new top-level vdevs");
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|
/* END CSTYLED */
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