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从 RAID1 阵列 (My Book Live Duo) 恢复数据

tag-icon • tag-icon hard-drive data-recovery raid data-loss
从 RAID1 阵列 (My Book Live Duo) 恢复数据

我有一台 WD My Book Live Duo 设备，我将其用作具有 RAID1 配置的网络驱动器。该设备运行了近 2 年，但突然停止工作，也就是说，它不再通过网络进行通信。因此，我正在尝试恢复我的数据。为了做到这一点，我移除了里面的 2 个硬盘（每个 2 TB），并将它们连接到运行 Ubuntu 系统的 PC，问题是我对 RAID1 系统知之甚少，也没有使用此类分区/阵列进行管理员工作的经验。我一直在尝试使用在互联网上找到的信息来恢复数据，但目前还无法访问我的数据。我希望有人能帮我解决这个问题。

sudo fdisk -l

WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted.


Disk /dev/sda: 2000.4 GB, 2000398934016 bytes 255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk identifier: 0x00000000

   Device Boot      Start         End      Blocks   Id  System /dev/sda1               1  3907029167  1953514583+  ee  GPT Partition 1 does not start on physical sector boundary.

WARNING: GPT (GUID Partition Table) detected on '/dev/sdb'! The util fdisk doesn't support GPT. Use GNU Parted.


Disk /dev/sdb: 2000.4 GB, 2000398934016 bytes 255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk identifier: 0x00000000

   Device Boot      Start         End      Blocks   Id  System /dev/sdb1               1  3907029167  1953514583+  ee  GPT Partition 1 does not start on physical sector boundary.

Disk /dev/sdc: 8012 MB, 8012390400 bytes 255 heads, 63 sectors/track, 974 cylinders, total 15649200 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x0007cb70

   Device Boot      Start         End      Blocks   Id  System /dev/sdc1   *        2048     9420799     4709376   83  Linux /dev/sdc2         9422846    15648767     3112961    5  Extended /dev/sdc5         9422848    15648767     3112960   82  Linux swap / Solaris

Disk /dev/md3: 1995.8 GB, 1995774484480 bytes 2 heads, 4 sectors/track, 487249630 cylinders, total 3897997040 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk identifier: 0x00000000

Disk /dev/md3 doesn't contain a valid partition table

猫/proc/mdstat

Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] md3 : active raid1 sda4[0]
      1948998520 blocks super 1.0 [2/1] [U_] md2 : inactive sda3[0](S)
      500724 blocks super 1.0

sudo mdadm --检查 /dev/sda4

/dev/sda4:
          Magic : a92b4efc
        Version : 1.0
    Feature Map : 0x0
     Array UUID : 6328fe8f:fe1171d8:081e7373:f0f4c10c
           Name : MyBookLiveDuo:3   Creation Time : Wed Jul 25 23:18:29 2012
     Raid Level : raid1    Raid Devices : 2
 Avail Dev Size : 3897997040 (1858.71 GiB 1995.77 GB)
     Array Size : 1948998520 (1858.71 GiB 1995.77 GB)    Super Offset : 3897997296 sectors
          State : clean
    Device UUID : 4fc654bb:b038b5f5:95b07dfb:cb72a9fd
    Update Time : Fri Oct 17 14:51:18 2014
       Checksum : e6c639fd - correct
         Events : 2776221
   Device Role : Active device 0    Array State : A. ('A' == active, '.' == missing)

sudo mount /dev/md3 /mnt/raid

mount: wrong fs type, bad option, bad superblock on /dev/md3,
       missing codepage or helper program, or other error
       In some cases useful info is found in syslog - try
       dmesg | tail  or so

sudo mdadm --检查 --扫描

ARRAY /dev/md/2 metadata=1.0 UUID=ff212100:102164c7:d017c1b8:c595e2ba name=MyBookLiveDuo:2    
     spares=1 

ARRAY /dev/md/3 metadata=1.0 UUID=6328fe8f:fe1171d8:081e7373:f0f4c10c name=MyBookLiveDuo:3

编辑：

sudo gdisk -l /dev/sda

GPT fdisk (gdisk) version 0.8.8

Partition table scan:
  MBR: protective
  BSD: not present
  APM: not present
  GPT: present

Found valid GPT with protective MBR; using GPT.
Disk /dev/sda: 3907029168 sectors, 1.8 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): 79317853-5A49-4E58-83F9-CB068223B1D5
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 3907029134
Partitions will be aligned on 2048-sector boundaries
Total free space is 30829 sectors (15.1 MiB)

Number  Start (sector)    End (sector)  Size       Code  Name
   1         1032192         5031935   1.9 GiB     FD00  primary
   2         5031936         9031679   1.9 GiB     FD00  primary
   3           30720         1032191   489.0 MiB   FD00  primary
   4         9031680      3907028991   1.8 TiB     FD00  primary

sudo gdisk -l /dev/sdb

GPT fdisk (gdisk) version 0.8.8

Partition table scan:
  MBR: protective
  BSD: not present
  APM: not present
  GPT: present

Found valid GPT with protective MBR; using GPT.
Disk /dev/sdb: 3907029168 sectors, 1.8 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): 5F5A7F2D-1D3C-434A-9CCD-FB8AED835564
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 3907029134
Partitions will be aligned on 2048-sector boundaries
Total free space is 3907029101 sectors (1.8 TiB)

Number  Start (sector)    End (sector)  Size       Code  Name

编辑2：

这是我尝试挂载 /dev/md3 时在 dmesg 中得到的输出

EXT4-fs (md3): bad block size 65536

编辑3：

sudo parted -l

Model: ATA WDC WD20EURS-63S (scsi)
Disk /dev/sda: 2000GB
Sector size (logical/physical): 512B/4096B
Partition Table: gpt

Number  Start   End     Size    File system  Name     Flags
 3      15,7MB  528MB   513MB                primary  raid
 1      528MB   2576MB  2048MB  ext3         primary  raid
 2      2576MB  4624MB  2048MB  ext3         primary  raid
 4      4624MB  2000GB  1996GB  ext4         primary  raid


Model: ATA WDC WD20EURS-63S (scsi)
Disk /dev/sdb: 2000GB
Sector size (logical/physical): 512B/4096B
Partition Table: gpt

Number  Start  End  Size  File system  Name  Flags


Model: ATA CFast D150Q (scsi)
Disk /dev/sdc: 8012MB
Sector size (logical/physical): 512B/512B
Partition Table: msdos

Number  Start   End     Size    Type      File system     Flags
 1      1049kB  4823MB  4822MB  primary   ext4            boot
 2      4824MB  8012MB  3188MB  extended
 5      4824MB  8012MB  3188MB  logical   linux-swap(v1)


Model: Linux Software RAID Array (md)
Disk /dev/md3: 1996GB
Sector size (logical/physical): 512B/4096B
Partition Table: loop

Number  Start  End     Size    File system  Flags
 1      0,00B  1996GB  1996GB  ext4

任何帮助将不胜感激。

提前致谢。

安德烈斯

答案1

我成功安装了 raid 1 阵列并恢复了数据。我使用了以下方法：

sudo fuseext2 -o ro -o sync_read -o allow_other /dev/sda4 /mnt/raid

欲了解更多信息，请参阅这篇优秀的博客文章：

[从 WD Mybook Live 2TB / 3TB (或类似产品) 恢复数据][1]http://john-hunt.com/2013/04/25/recovering-data-from-a-wd-mybook-live-2tb-3tbor-similar/

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