我试图扩展大型 ZFS 池的存储，从 USB 托架添加类似大小的驱动器。池正在使用中，命令zpool attach挂起。一个小时后，它仍未返回，因此我尝试了systemctl reboot。几分钟后，我去检查服务器，我放在服务器上进行本地故障排除的显示器屏幕空白，终端光标闪烁。最后，我关闭了机器并重新打开。
现在，池无法挂载或导入。我没有备份可以恢复。如果有任何方法可以恢复元数据，即使部分数据丢失，我也想尝试一下。这个池的数据是多年来积累的，我甚至不确定我是否还能找到所有的原始数据。
我尝试使用我能找到的一些命令来强制导入
[root@**** ****]# zpool import
pool: video
id: 15905175910815917143
state: FAULTED
status: The pool metadata is corrupted.
action: The pool cannot be imported due to damaged devices or data.
The pool may be active on another system, but can be imported using
the '-f' flag.
see: https://openzfs.github.io/openzfs-docs/msg/ZFS-8000-72
config:
video FAULTED corrupted data
raidz1-0 ONLINE
ata-ST8000DM004-2CX188_ZR10AYT2 ONLINE
ata-ST8000DM004-2CX188_ZR10AXW8 ONLINE
ata-ST8000DM004-2CX188_ZR10AXV1 ONLINE
ata-ST8000DM004-2CX188_ZR10RA7N ONLINE
ata-ST8000DM004-2U9188_ZR151F2J ONLINE
raidz1-1 ONLINE
sdg ONLINE
sdh ONLINE
sdi ONLINE
[root@**** ****]# zpool import -f video
cannot import 'video': I/O error
Destroy and re-create the pool from
a backup source.
[root@**** ****]# zpool import -F video
cannot import 'video': I/O error
Destroy and re-create the pool from
a backup source.
[root@**** ****]# zpool import -FX video
cannot import 'video': one or more devices is currently unavailable
另一个看起来类似的问题（感谢审查步骤）使用了一个我不熟悉的命令，但我想此时我可能已经被困住了，所以尝试它不会造成太大的伤害，它提供了看起来很有用的信息，但我不确定如何解析或下一步要尝试什么步骤。
zdb -e video
Configuration for import:
version: 5000
pool_guid: 15905175910815917143
name: 'video'
state: 0
vdev_children: 2
vdev_tree:
type: 'root'
id: 0
guid: 15905175910815917143
children[0]:
type: 'raidz'
id: 0
guid: 2054687036979935271
nparity: 1
metaslab_array: 256
metaslab_shift: 34
ashift: 12
asize: 32006194855936
is_log: 0
create_txg: 4
children[0]:
type: 'disk'
id: 0
guid: 13972984489407319282
whole_disk: 1
DTL: 19756
create_txg: 4
path: '/dev/disk/by-id/ata-ST8000DM004-2CX188_ZR10AYT2-part1'
devid: 'ata-ST8000DM004-2CX188_ZR10AYT2-part1'
phys_path: 'pci-0000:01:00.1-ata-1.0'
children[1]:
type: 'disk'
id: 1
guid: 3269387665146278941
whole_disk: 1
DTL: 19755
create_txg: 4
path: '/dev/disk/by-id/ata-ST8000DM004-2CX188_ZR10AXW8-part1'
devid: 'ata-ST8000DM004-2CX188_ZR10AXW8-part1'
phys_path: 'pci-0000:01:00.1-ata-2.0'
children[2]:
type: 'disk'
id: 2
guid: 1063598399220908338
whole_disk: 1
DTL: 19754
create_txg: 4
path: '/dev/disk/by-id/ata-ST8000DM004-2CX188_ZR10AXV1-part1'
devid: 'ata-ST8000DM004-2CX188_ZR10AXV1-part1'
phys_path: 'pci-0000:01:00.1-ata-3.0'
children[3]:
type: 'disk'
id: 3
guid: 15825360133242429167
whole_disk: 1
DTL: 19753
create_txg: 4
path: '/dev/disk/by-id/ata-ST8000DM004-2CX188_ZR10RA7N-part1'
devid: 'ata-ST8000DM004-2CX188_ZR10RA7N-part1'
phys_path: 'pci-0000:01:00.1-ata-4.0'
children[4]:
type: 'disk'
id: 4
guid: 260649952118180299
whole_disk: 1
create_txg: 4
path: '/dev/disk/by-id/ata-ST8000DM004-2U9188_ZR151F2J-part1'
devid: 'ata-ST8000DM004-2U9188_ZR151F2J-part1'
phys_path: 'pci-0000:08:00.0-usb-0:2:1.0-scsi-0:0:0:0'
children[1]:
type: 'raidz'
id: 1
guid: 240687314187761822
nparity: 1
metaslab_array: 641
metaslab_shift: 34
ashift: 9
asize: 18003481067520
is_log: 0
create_txg: 5187619
children[0]:
type: 'disk'
id: 0
guid: 10386202710927202705
whole_disk: 1
DTL: 22553
create_txg: 5187619
path: '/dev/sdg1'
devid: 'ata-WDC_WD60EZAZ-00SF3B0_WD-WX22DA15XS1Z-part1'
phys_path: 'pci-0000:0b:00.3-usb-0:3:1.0-scsi-0:0:0:0'
children[1]:
type: 'disk'
id: 1
guid: 6384748657570502003
whole_disk: 1
DTL: 22552
create_txg: 5187619
path: '/dev/sdh1'
devid: 'ata-WDC_WD60EZAZ-00SF3B0_WD-WX32DA1APAD4-part1'
phys_path: 'pci-0000:0b:00.3-usb-0:3:1.0-scsi-0:0:0:1'
children[2]:
type: 'disk'
id: 2
guid: 4047734325973090233
whole_disk: 1
DTL: 22551
create_txg: 5187619
path: '/dev/sdi1'
devid: 'ata-WDC_WD6003FZBX-00K5WB0_V9K6YNSM-part1'
phys_path: 'pci-0000:0b:00.3-usb-0:4:1.0-scsi-0:0:0:0'
load-policy:
load-request-txg: 18446744073709551615
load-rewind-policy: 2
zdb: can't open 'video': No such device or address
ZFS_DBGMSG(zdb) START:
spa.c:6156:spa_import(): spa_import: importing video
spa_misc.c:416:spa_load_note(): spa_load(video, config trusted): LOADING
vdev_raidz.c:4588:vdev_raidz_init(): reflow_in_progress=0
vdev_raidz.c:4588:vdev_raidz_init(): reflow_in_progress=0
vdev.c:154:vdev_dbgmsg(): disk vdev '/dev/sdi1': probe done, cant_read=0 cant_write=1
vdev.c:154:vdev_dbgmsg(): disk vdev '/dev/disk/by-id/ata-ST8000DM004-2CX188_ZR10AXW8-part1': probe done, cant_read=0 cant_write=1
vdev.c:154:vdev_dbgmsg(): disk vdev '/dev/disk/by-id/ata-ST8000DM004-2CX188_ZR10AYT2-part1': probe done, cant_read=0 cant_write=1
vdev.c:154:vdev_dbgmsg(): disk vdev '/dev/disk/by-id/ata-ST8000DM004-2CX188_ZR10AXV1-part1': probe done, cant_read=0 cant_write=1
vdev.c:154:vdev_dbgmsg(): disk vdev '/dev/disk/by-id/ata-ST8000DM004-2CX188_ZR10RA7N-part1': probe done, cant_read=0 cant_write=1
vdev.c:154:vdev_dbgmsg(): disk vdev '/dev/disk/by-id/ata-ST8000DM004-2U9188_ZR151F2J-part1': probe done, cant_read=0 cant_write=1
vdev.c:154:vdev_dbgmsg(): disk vdev '/dev/sdh1': probe done, cant_read=0 cant_write=1
vdev.c:154:vdev_dbgmsg(): disk vdev '/dev/sdg1': probe done, cant_read=0 cant_write=1
vdev.c:154:vdev_dbgmsg(): disk vdev '/dev/disk/by-id/ata-ST8000DM004-2CX188_ZR10AYT2-part1': best uberblock found for spa video. txg 7803281
vdev.c:154:vdev_dbgmsg(): disk vdev '/dev/disk/by-id/ata-ST8000DM004-2CX188_ZR10AYT2-part1': spa=video best uberblock (txg=7803281 info=0x0) has different raidz_reflow_info than latest uberblock (txg=18446744073709547384 info=0x5621bd1f86b0)
spa_misc.c:402:spa_load_failed(): spa_load(video, config untrusted): FAILED: no valid uberblock found
spa_misc.c:416:spa_load_note(): spa_load(video, config untrusted): UNLOADING
ZFS_DBGMSG(zdb) END
我在搜索中找到的所有内容似乎都与我的问题略有不同，除了一个说它可能只是因为 USB 而消失。所有列出的驱动器都存在并被考虑在内，我再次检查了 raidz1-1 的驱动器是否是正确的驱动器。