在 Ubuntu 20.04 机器上，我有两个 6TB 磁盘，它们位于一个 LVG 中，跨越两个磁盘，形成一个 12TB 的逻辑卷。自从我大约一年前设置它以来，它一直运行良好。这两个驱动器位于一个外部 USB3 驱动器托架中。上周末，由于我所在大楼的电力服务进行维护工作，我关闭了 Ubuntu 设备和驱动器托架。当我重新启动电源时，卷组没有挂载。
sudo gparted
Unit tmp.mount does not exist, proceeding anyway.
GParted 1.0.0
configuration --enable-libparted-dmraid --enable-online-resize
libparted 3.3
Invalid argument during seek for read on /dev/sdg
The backup GPT table is corrupt, but the primary appears OK, so that will be used.
Invalid argument during seek for read on /dev/sdh
The backup GPT table is corrupt, but the primary appears OK, so that will be used.
sudo fdisk -lu /dev/sdg
Disk /dev/sdg: 5.47 TiB, 6001175126016 bytes, 11721045168 sectors
Disk model: USB3.0 DISK00
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: dos
Disk identifier: 0x00000000
Device Boot Start End Sectors Size Id Type
/dev/sdg1 1 4294967295 4294967295 2T ee GPT
Partition 1 does not start on physical sector boundary.
sudo fdisk -lu /dev/sdh
Disk /dev/sdh: 5.47 TiB, 6001175126016 bytes, 11721045168 sectors
Disk model: USB3.0 DISK01
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: dos
Disk identifier: 0x00000000
Device Boot Start End Sectors Size Id Type
/dev/sdh1 1 4294967295 4294967295 2T ee GPT
Partition 1 does not start on physical sector boundary.
sudo gdisk
GPT fdisk (gdisk) version 1.0.5
Type device filename, or press <Enter> to exit: /dev/sdg
Warning! Disk size is smaller than the main header indicates! Loading
secondary header from the last sector of the disk! You should use 'v' to
verify disk integrity, and perhaps options on the experts' menu to repair
the disk.
Caution: invalid backup GPT header, but valid main header; regenerating
backup header from main header.
Warning! One or more CRCs don't match. You should repair the disk!
Main header: OK
Backup header: ERROR
Main partition table: OK
Backup partition table: ERROR
Partition table scan:
MBR: protective
BSD: not present
APM: not present
GPT: damaged
****************************************************************************
Caution: Found protective or hybrid MBR and corrupt GPT. Using GPT, but disk
verification and recovery are STRONGLY recommended.
****************************************************************************
Command (? for help): i
Using 1
Partition GUID code: 0FC63DAF-8483-4772-8E79-3D69D8477DE4 (Linux filesystem)
Partition unique GUID: CC098100-9E59-4A16-BD05-CC3F25E59B91
First sector: 2048 (at 1024.0 KiB)
Last sector: 11721043967 (at 5.5 TiB)
Partition size: 11721041920 sectors (5.5 TiB)
Attribute flags: 0000000000000000
Partition name: ''
Command (? for help): v
Caution: The CRC for the backup partition table is invalid. This table may
be corrupt. This program will automatically create a new backup partition
table when you save your partitions.
Problem: The secondary header's self-pointer indicates that it doesn't reside
at the end of the disk. If you've added a disk to a RAID array, use the 'e'
option on the experts' menu to adjust the secondary header's and partition
table's locations.
Problem: Disk is too small to hold all the data!
(Disk size is 11721045168 sectors, needs to be 253879390758630 sectors.)
The 'e' option on the experts' menu may fix this problem.
Problem: GPT claims the disk is larger than it is! (Claimed last usable
sector is 253879390758596, but backup header is at
253879390758629 and disk size is 11721045168 sectors.
The 'e' option on the experts' menu will probably fix this problem
Identified 4 problems!
Command (? for help):
sudo gdisk /dev/sdh
GPT fdisk (gdisk) version 1.0.5
Warning! Disk size is smaller than the main header indicates! Loading
secondary header from the last sector of the disk! You should use 'v' to
verify disk integrity, and perhaps options on the experts' menu to repair
the disk.
Caution: invalid backup GPT header, but valid main header; regenerating
backup header from main header.
Warning! One or more CRCs don't match. You should repair the disk!
Main header: OK
Backup header: ERROR
Main partition table: OK
Backup partition table: ERROR
Partition table scan:
MBR: protective
BSD: not present
APM: not present
GPT: damaged
****************************************************************************
Caution: Found protective or hybrid MBR and corrupt GPT. Using GPT, but disk
verification and recovery are STRONGLY recommended.
****************************************************************************
Command (? for help): i
Using 1
Partition GUID code: 0FC63DAF-8483-4772-8E79-3D69D8477DE4 (Linux filesystem)
Partition unique GUID: 42E52C6C-C33C-4D2E-9ECB-3D8DF60DCB25
First sector: 2048 (at 1024.0 KiB)
Last sector: 11721043967 (at 5.5 TiB)
Partition size: 11721041920 sectors (5.5 TiB)
Attribute flags: 0000000000000000
Partition name: ''
Command (? for help): v
Caution: The CRC for the backup partition table is invalid. This table may
be corrupt. This program will automatically create a new backup partition
table when you save your partitions.
Problem: The secondary header's self-pointer indicates that it doesn't reside
at the end of the disk. If you've added a disk to a RAID array, use the 'e'
option on the experts' menu to adjust the secondary header's and partition
table's locations.
Problem: Disk is too small to hold all the data!
(Disk size is 11721045168 sectors, needs to be 253879390758630 sectors.)
The 'e' option on the experts' menu may fix this problem.
Problem: GPT claims the disk is larger than it is! (Claimed last usable
sector is 253879390758596, but backup header is at
253879390758629 and disk size is 11721045168 sectors.
The 'e' option on the experts' menu will probably fix this problem
Identified 4 problems!
Command (? for help):
关于恢复逻辑卷有什么建议吗？
我有数据备份。但它在另一个国家，由于 COVID 旅行限制，我可能要过一段时间才能恢复它。:-)