408 lines
12 KiB
C
408 lines
12 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) 2013, 2018 by Delphix. All rights reserved.
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* Copyright (c) 2016, 2017 Intel Corporation.
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* Copyright 2016 Igor Kozhukhov <ikozhukhov@gmail.com>.
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*/
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/*
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* Functions to convert between a list of vdevs and an nvlist representing the
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* configuration. Each entry in the list can be one of:
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*
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* Device vdevs
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* disk=(path=..., devid=...)
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* file=(path=...)
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*
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* Group vdevs
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* raidz[1|2]=(...)
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* mirror=(...)
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*
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* Hot spares
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*
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* While the underlying implementation supports it, group vdevs cannot contain
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* other group vdevs. All userland verification of devices is contained within
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* this file. If successful, the nvlist returned can be passed directly to the
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* kernel; we've done as much verification as possible in userland.
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*
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* Hot spares are a special case, and passed down as an array of disk vdevs, at
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* the same level as the root of the vdev tree.
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*
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* The only function exported by this file is 'make_root_vdev'. The
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* function performs several passes:
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*
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* 1. Construct the vdev specification. Performs syntax validation and
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* makes sure each device is valid.
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* 2. Check for devices in use. Using libblkid to make sure that no
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* devices are also in use. Some can be overridden using the 'force'
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* flag, others cannot.
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* 3. Check for replication errors if the 'force' flag is not specified.
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* validates that the replication level is consistent across the
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* entire pool.
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* 4. Call libzfs to label any whole disks with an EFI label.
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*/
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#include <assert.h>
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#include <ctype.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <libintl.h>
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#include <libnvpair.h>
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#include <libzutil.h>
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#include <limits.h>
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#include <sys/spa.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include "zpool_util.h"
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#include <sys/zfs_context.h>
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#include <scsi/scsi.h>
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#include <scsi/sg.h>
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#include <sys/efi_partition.h>
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#include <sys/stat.h>
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#include <sys/vtoc.h>
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#include <sys/mntent.h>
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#include <uuid/uuid.h>
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#include <blkid/blkid.h>
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typedef struct vdev_disk_db_entry
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{
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char id[24];
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int sector_size;
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} vdev_disk_db_entry_t;
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/*
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* Database of block devices that lie about physical sector sizes. The
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* identification string must be precisely 24 characters to avoid false
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* negatives
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*/
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static vdev_disk_db_entry_t vdev_disk_database[] = {
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{"ATA ADATA SSD S396 3", 8192},
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{"ATA APPLE SSD SM128E", 8192},
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{"ATA APPLE SSD SM256E", 8192},
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{"ATA APPLE SSD SM512E", 8192},
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{"ATA APPLE SSD SM768E", 8192},
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{"ATA C400-MTFDDAC064M", 8192},
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{"ATA C400-MTFDDAC128M", 8192},
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{"ATA C400-MTFDDAC256M", 8192},
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{"ATA C400-MTFDDAC512M", 8192},
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{"ATA Corsair Force 3 ", 8192},
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{"ATA Corsair Force GS", 8192},
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{"ATA INTEL SSDSA2CT04", 8192},
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{"ATA INTEL SSDSA2BZ10", 8192},
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{"ATA INTEL SSDSA2BZ20", 8192},
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{"ATA INTEL SSDSA2BZ30", 8192},
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{"ATA INTEL SSDSA2CW04", 8192},
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{"ATA INTEL SSDSA2CW08", 8192},
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{"ATA INTEL SSDSA2CW12", 8192},
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{"ATA INTEL SSDSA2CW16", 8192},
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{"ATA INTEL SSDSA2CW30", 8192},
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{"ATA INTEL SSDSA2CW60", 8192},
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{"ATA INTEL SSDSC2CT06", 8192},
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{"ATA INTEL SSDSC2CT12", 8192},
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{"ATA INTEL SSDSC2CT18", 8192},
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{"ATA INTEL SSDSC2CT24", 8192},
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{"ATA INTEL SSDSC2CW06", 8192},
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{"ATA INTEL SSDSC2CW12", 8192},
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{"ATA INTEL SSDSC2CW18", 8192},
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{"ATA INTEL SSDSC2CW24", 8192},
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{"ATA INTEL SSDSC2CW48", 8192},
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{"ATA KINGSTON SH100S3", 8192},
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{"ATA KINGSTON SH103S3", 8192},
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{"ATA M4-CT064M4SSD2 ", 8192},
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{"ATA M4-CT128M4SSD2 ", 8192},
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{"ATA M4-CT256M4SSD2 ", 8192},
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{"ATA M4-CT512M4SSD2 ", 8192},
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{"ATA OCZ-AGILITY2 ", 8192},
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{"ATA OCZ-AGILITY3 ", 8192},
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{"ATA OCZ-VERTEX2 3.5 ", 8192},
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{"ATA OCZ-VERTEX3 ", 8192},
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{"ATA OCZ-VERTEX3 LT ", 8192},
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{"ATA OCZ-VERTEX3 MI ", 8192},
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{"ATA OCZ-VERTEX4 ", 8192},
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{"ATA SAMSUNG MZ7WD120", 8192},
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{"ATA SAMSUNG MZ7WD240", 8192},
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{"ATA SAMSUNG MZ7WD480", 8192},
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{"ATA SAMSUNG MZ7WD960", 8192},
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{"ATA SAMSUNG SSD 830 ", 8192},
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{"ATA Samsung SSD 840 ", 8192},
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{"ATA SanDisk SSD U100", 8192},
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{"ATA TOSHIBA THNSNH06", 8192},
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{"ATA TOSHIBA THNSNH12", 8192},
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{"ATA TOSHIBA THNSNH25", 8192},
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{"ATA TOSHIBA THNSNH51", 8192},
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{"ATA APPLE SSD TS064C", 4096},
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{"ATA APPLE SSD TS128C", 4096},
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{"ATA APPLE SSD TS256C", 4096},
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{"ATA APPLE SSD TS512C", 4096},
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{"ATA INTEL SSDSA2M040", 4096},
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{"ATA INTEL SSDSA2M080", 4096},
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{"ATA INTEL SSDSA2M160", 4096},
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{"ATA INTEL SSDSC2MH12", 4096},
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{"ATA INTEL SSDSC2MH25", 4096},
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{"ATA OCZ CORE_SSD ", 4096},
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{"ATA OCZ-VERTEX ", 4096},
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{"ATA SAMSUNG MCCOE32G", 4096},
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{"ATA SAMSUNG MCCOE64G", 4096},
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{"ATA SAMSUNG SSD PM80", 4096},
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/* Flash drives optimized for 4KB IOs on larger pages */
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{"ATA INTEL SSDSC2BA10", 4096},
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{"ATA INTEL SSDSC2BA20", 4096},
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{"ATA INTEL SSDSC2BA40", 4096},
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{"ATA INTEL SSDSC2BA80", 4096},
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{"ATA INTEL SSDSC2BB08", 4096},
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{"ATA INTEL SSDSC2BB12", 4096},
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{"ATA INTEL SSDSC2BB16", 4096},
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{"ATA INTEL SSDSC2BB24", 4096},
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{"ATA INTEL SSDSC2BB30", 4096},
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{"ATA INTEL SSDSC2BB40", 4096},
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{"ATA INTEL SSDSC2BB48", 4096},
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{"ATA INTEL SSDSC2BB60", 4096},
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{"ATA INTEL SSDSC2BB80", 4096},
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{"ATA INTEL SSDSC2BW24", 4096},
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{"ATA INTEL SSDSC2BW48", 4096},
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{"ATA INTEL SSDSC2BP24", 4096},
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{"ATA INTEL SSDSC2BP48", 4096},
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{"NA SmrtStorSDLKAE9W", 4096},
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{"NVMe Amazon EC2 NVMe ", 4096},
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/* Imported from Open Solaris */
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{"ATA MARVELL SD88SA02", 4096},
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/* Advanced format Hard drives */
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{"ATA Hitachi HDS5C303", 4096},
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{"ATA SAMSUNG HD204UI ", 4096},
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{"ATA ST2000DL004 HD20", 4096},
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{"ATA WDC WD10EARS-00M", 4096},
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{"ATA WDC WD10EARS-00S", 4096},
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{"ATA WDC WD10EARS-00Z", 4096},
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{"ATA WDC WD15EARS-00M", 4096},
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{"ATA WDC WD15EARS-00S", 4096},
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{"ATA WDC WD15EARS-00Z", 4096},
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{"ATA WDC WD20EARS-00M", 4096},
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{"ATA WDC WD20EARS-00S", 4096},
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{"ATA WDC WD20EARS-00Z", 4096},
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{"ATA WDC WD1600BEVT-0", 4096},
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{"ATA WDC WD2500BEVT-0", 4096},
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{"ATA WDC WD3200BEVT-0", 4096},
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{"ATA WDC WD5000BEVT-0", 4096},
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};
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#define INQ_REPLY_LEN 96
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#define INQ_CMD_LEN 6
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static const int vdev_disk_database_size =
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sizeof (vdev_disk_database) / sizeof (vdev_disk_database[0]);
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boolean_t
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check_sector_size_database(char *path, int *sector_size)
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{
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unsigned char inq_buff[INQ_REPLY_LEN];
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unsigned char sense_buffer[32];
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unsigned char inq_cmd_blk[INQ_CMD_LEN] =
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{INQUIRY, 0, 0, 0, INQ_REPLY_LEN, 0};
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sg_io_hdr_t io_hdr;
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int error;
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int fd;
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int i;
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/* Prepare INQUIRY command */
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memset(&io_hdr, 0, sizeof (sg_io_hdr_t));
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io_hdr.interface_id = 'S';
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io_hdr.cmd_len = sizeof (inq_cmd_blk);
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io_hdr.mx_sb_len = sizeof (sense_buffer);
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io_hdr.dxfer_direction = SG_DXFER_FROM_DEV;
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io_hdr.dxfer_len = INQ_REPLY_LEN;
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io_hdr.dxferp = inq_buff;
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io_hdr.cmdp = inq_cmd_blk;
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io_hdr.sbp = sense_buffer;
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io_hdr.timeout = 10; /* 10 milliseconds is ample time */
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if ((fd = open(path, O_RDONLY|O_DIRECT)) < 0)
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return (B_FALSE);
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error = ioctl(fd, SG_IO, (unsigned long) &io_hdr);
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(void) close(fd);
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if (error < 0)
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return (B_FALSE);
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if ((io_hdr.info & SG_INFO_OK_MASK) != SG_INFO_OK)
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return (B_FALSE);
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for (i = 0; i < vdev_disk_database_size; i++) {
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if (memcmp(inq_buff + 8, vdev_disk_database[i].id, 24))
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continue;
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*sector_size = vdev_disk_database[i].sector_size;
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return (B_TRUE);
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}
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return (B_FALSE);
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}
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static int
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check_slice(const char *path, blkid_cache cache, int force, boolean_t isspare)
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{
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int err;
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char *value;
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/* No valid type detected device is safe to use */
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value = blkid_get_tag_value(cache, "TYPE", path);
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if (value == NULL)
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return (0);
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/*
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* If libblkid detects a ZFS device, we check the device
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* using check_file() to see if it's safe. The one safe
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* case is a spare device shared between multiple pools.
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*/
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if (strcmp(value, "zfs_member") == 0) {
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err = check_file(path, force, isspare);
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} else {
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if (force) {
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err = 0;
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} else {
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err = -1;
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vdev_error(gettext("%s contains a filesystem of "
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"type '%s'\n"), path, value);
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}
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}
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free(value);
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return (err);
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}
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/*
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* Validate that a disk including all partitions are safe to use.
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*
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* For EFI labeled disks this can done relatively easily with the libefi
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* library. The partition numbers are extracted from the label and used
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* to generate the expected /dev/ paths. Each partition can then be
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* checked for conflicts.
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*
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* For non-EFI labeled disks (MBR/EBR/etc) the same process is possible
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* but due to the lack of a readily available libraries this scanning is
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* not implemented. Instead only the device path as given is checked.
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*/
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static int
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check_disk(const char *path, blkid_cache cache, int force,
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boolean_t isspare, boolean_t iswholedisk)
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{
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struct dk_gpt *vtoc;
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char slice_path[MAXPATHLEN];
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int err = 0;
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int fd, i;
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int flags = O_RDONLY|O_DIRECT;
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if (!iswholedisk)
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return (check_slice(path, cache, force, isspare));
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/* only spares can be shared, other devices require exclusive access */
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if (!isspare)
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flags |= O_EXCL;
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if ((fd = open(path, flags)) < 0) {
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char *value = blkid_get_tag_value(cache, "TYPE", path);
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(void) fprintf(stderr, gettext("%s is in use and contains "
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"a %s filesystem.\n"), path, value ? value : "unknown");
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free(value);
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return (-1);
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}
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/*
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* Expected to fail for non-EFI labeled disks. Just check the device
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* as given and do not attempt to detect and scan partitions.
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*/
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err = efi_alloc_and_read(fd, &vtoc);
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if (err) {
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(void) close(fd);
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return (check_slice(path, cache, force, isspare));
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}
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/*
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* The primary efi partition label is damaged however the secondary
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* label at the end of the device is intact. Rather than use this
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* label we should play it safe and treat this as a non efi device.
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*/
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if (vtoc->efi_flags & EFI_GPT_PRIMARY_CORRUPT) {
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efi_free(vtoc);
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(void) close(fd);
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if (force) {
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/* Partitions will now be created using the backup */
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return (0);
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} else {
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vdev_error(gettext("%s contains a corrupt primary "
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"EFI label.\n"), path);
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return (-1);
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}
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}
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for (i = 0; i < vtoc->efi_nparts; i++) {
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if (vtoc->efi_parts[i].p_tag == V_UNASSIGNED ||
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uuid_is_null((uchar_t *)&vtoc->efi_parts[i].p_guid))
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continue;
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if (strncmp(path, UDISK_ROOT, strlen(UDISK_ROOT)) == 0)
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(void) snprintf(slice_path, sizeof (slice_path),
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"%s%s%d", path, "-part", i+1);
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else
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(void) snprintf(slice_path, sizeof (slice_path),
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"%s%s%d", path, isdigit(path[strlen(path)-1]) ?
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"p" : "", i+1);
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err = check_slice(slice_path, cache, force, isspare);
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if (err)
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break;
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}
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efi_free(vtoc);
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(void) close(fd);
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return (err);
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}
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int
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check_device(const char *path, boolean_t force,
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boolean_t isspare, boolean_t iswholedisk)
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{
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blkid_cache cache;
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int error;
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error = blkid_get_cache(&cache, NULL);
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if (error != 0) {
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(void) fprintf(stderr, gettext("unable to access the blkid "
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"cache.\n"));
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return (-1);
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}
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error = check_disk(path, cache, force, isspare, iswholedisk);
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blkid_put_cache(cache);
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return (error);
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}
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