您好，ubuntu 成员...
从昨天开始，我的 Iomega 家庭媒体网络硬盘 (HMNHD) 出现了问题，它已经运行了 2 年多。这是由于一次大面积停电导致的，我认为这损坏了硬盘操作系统，导致无法再访问文件。我需要恢复一些关键文件（它们上周放在驱动器上，但尚未“复制”到第二个 NAS，因为每两周运行一次的保存周期将于今天运行（太晚了 !!!）
在来这里寻求帮助之前，我做了几个测试，因为我认为硬盘 Seagate 1 到 SATA) 尚未出现故障，但数据损坏是原因...这是我得到的结果：在 Windows 下运行几个软件，给我以下信息：- 磁盘运行 GPT-EFI。- 方便我们：看到 7000 个文件并可以恢复它们，但几个 gz 文件被分割（见以下原因）- TestDisk 看到 GPT-EFI 磁盘类型，并指示：
Current partition structure:
Partition Start End Size in sectors
1 P Linux Raid 65536 42008576 41943041 [primary] [md0]
No FAT, NTFS, ext2, JFS, Reiser, cramfs or XFS marker
2 P MS Data 42008584 1953525106 1911516523 [primary]
2 P MS Data 42008584 1953525106 1911516523 [primary]
经过快速分析：
Disk /dev/sdc - 1000 GB / 931 GiB - CHS 121601 255 63
Partition Start End Size in sectors
>P Linux LVM 65536 42008447 41942912
P Linux Raid 42008448 42008575 128 [md0]
Linux Raid 42008584 42008591 8 [hmnhd-TID0YM:1]
Linux LVM 42008584 1953524999 1911516416
如您所见，有一个 Linux Raid 分区，这可以解释为什么我们无法恢复数据（gz 文件分割）... Testdisk 在 14 小时后仍无法恢复数据，并且仍在分析磁盘。
我决定切换到 ubuntu live-cd 并尝试恢复我能恢复的内容（我已经对其他磁盘做过这个操作，效果很好）
因此我们开始吧：
ubuntu@ubuntu:~$ sudo fdisk -l
WARNING: GPT (GUID Partition Table) detected on '/dev/sdc'! The util fdisk doesn't support GPT. Use GNU Parted.
Disk /dev/sdc: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders, total 1953525168 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: 0x00008000
Device Boot Start End Blocks Id System
/dev/sdc1 1 1953525167 976762583+ ee GPT
Partition 1 does not start on physical sector boundary.
好的，GPT 类型..让我们继续使用 gdisk
ubuntu@ubuntu:~$ sudo gdisk /dev/sdc
GPT fdisk (gdisk) version 0.8.7
Partition table scan:
MBR: protective
BSD: not present
APM: not present
GPT: present
Found valid GPT with protective MBR; using GPT.
Command (? for help): x
Expert command (? for help): p
Disk /dev/sdc: 1953525168 sectors, 931.5 GiB
Logical sector size: 512 bytes
Disk identifier (GUID): 38DB39C4-87F0-43AA-BE1E-FB226B221093
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 1953525134
Partitions will be aligned on 8-sector boundaries
Total free space is 65537 sectors (32.0 MiB)
Number Start (sector) End (sector) Size Code Name
1 65536 42008576 20.0 GiB FD00 primary
2 42008584 1953525106 911.5 GiB 0700 primary
Expert command (? for help): o
Disk size is 1953525168 sectors (931.5 GiB)
MBR disk identifier: 0x00008000
MBR partitions:
Number Boot Start Sector End Sector Status Code
1 1 1953525167 primary 0xEE
Expert command (? for help): i
Partition number (1-2): 1
Partition GUID code: A19D880F-05FC-4D3B-A006-743F0F84911E (Linux RAID)
Partition unique GUID: 997E0DF2-00C2-469A-A5BB-BDD3CC676B73
First sector: 65536 (at 32.0 MiB)
Last sector: 42008576 (at 20.0 GiB)
Partition size: 41943041 sectors (20.0 GiB)
Attribute flags: 0000000000000000
Partition name: 'primary'
Expert command (? for help): i
Partition number (1-2): 2
Partition GUID code: EBD0A0A2-B9E5-4433-87C0-68B6B72699C7 (Microsoft basic data)
Partition unique GUID: C76D7285-4231-45CE-87E2-504FF9D8110F
First sector: 42008584 (at 20.0 GiB)
Last sector: 1953525106 (at 931.5 GiB)
Partition size: 1911516523 sectors (911.5 GiB)
Attribute flags: 0000000000000000
Partition name: 'primary'
Expert command (? for help): v
No problems found. 65537 free sectors (32.0 MiB) available in 3
segments, the largest of which is 65502 (32.0 MiB) in size.
我尝试使用几种类型挂载 /dev/sdc2，得到的结果是：
ubuntu@ubuntu:~$ sudo mount /dev/sdc2 /media/external/
mount: unknown filesystem type 'linux_raid_member'
ubuntu@ubuntu:~$ sudo mount -t ext2 /dev/sdc2 /media/external/
mount: wrong fs type, bad option, bad superblock on /dev/sdc2,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so
我需要访问这些文件并恢复它们，我现在可以做什么或如何继续......
提前感谢支持社区的建议...
特发性
答案1
设法理解了 mount：未知文件系统类型“linux_raid_member”错误消息...继续使用 mdadm（安装方式：sudo apt-get install mdadm 并将 postfix 配置为无配置（如果不需要））
ubuntu@ubuntu:~$ sudo mdadm --assemble --scan
mdadm: /dev/md0 has been started with 1 drive.
mdadm: /dev/md/1 has been started with 1 drive.
哦，太好了：磁盘出现在统一中 !!!! 刚刚检查 LVM 是否被安全正确检测到：
ubuntu@ubuntu:~$ sudo lvdisplay
--- Logical volume ---
LV Path /dev/7ebf5eba_vg/lv28ab8112
LV Name lv28ab8112
VG Name 7ebf5eba_vg
LV UUID 3Q3uVF-vpxW-RMLG-q8xv-mzir-A9uc-GedWph
LV Write Access read/write
LV Creation host, time ,
LV Status available
# open 0
LV Size 911,48 GiB
Current LE 233339
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 252:2
--- Logical volume ---
LV Path /dev/md0_vg/BFDlv
LV Name BFDlv
VG Name md0_vg
LV UUID iab1Sk-DQfk-WlZI-Hb0r-WyUo-LRTn-EuAkR3
LV Write Access read/write
LV Creation host, time ,
LV Status available
# open 0
LV Size 4,00 GiB
Current LE 1024
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 252:0
--- Logical volume ---
LV Path /dev/md0_vg/vol1
LV Name vol1
VG Name md0_vg
LV UUID 1AQ0Jt-eEEw-S0W6-1uXt-GvKy-kq2f-TyZNXa
LV Write Access read/write
LV Creation host, time ,
LV Status available
# open 0
LV Size 16,00 GiB
Current LE 4095
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 252:1
太棒了宝贝！
到目前为止已运行文件复制...新的主题即将出现，因为我现在正试图了解第一个 LV 上发生了什么