Crashed ZFS

[Mike Tancsa]

I would wait for a few more people to chime with what to do, but I had a
similar issue (same error IIRC) last week after physically moving the
disks to a new controller.  I did
zpool clear -F <pool name>
zpool export <pool name>
zpool import <pool name>

The clear gave an error but after the export / import, it came back
online.  A scrub was done, but showed no errors. Good luck!

    ---Mike



On 5/29/2019 7:28 AM, Александр Поволоцкий wrote:
> Hello
>
> After power surge, one of my zpools yields errors
>
> |root at stor:/home/tarkhil # zpool status -v big_fast_one||
> ||  pool: big_fast_one||
> || state: FAULTED||
> ||status: The pool metadata is corrupted and the pool cannot be opened.||
> ||action: Recovery is possible, but will result in some data loss.||
> ||        Returning the pool to its state as of Tue May 28 02:00:35
> 2019||
> ||        should correct the problem.  Approximately 5 seconds of data||
> ||        must be discarded, irreversibly.  Recovery can be attempted||
> ||        by executing 'zpool clear -F big_fast_one'. A scrub of the
> pool||
> ||        is strongly recommended after recovery.||
> ||   see: http://illumos.org/msg/ZFS-8000-72||
> ||  scan: none requested||
> ||config:||
> ||
> ||        NAME              STATE     READ WRITE CKSUM||
> ||        big_fast_one      FAULTED      0     0     1||
> ||          raidz1-0        ONLINE       0     0     7||
> ||            gpt/ZA21TJA7  ONLINE       0     0     0||
> ||            gpt/ZA21P6JQ  ONLINE       0     0     0||
> ||            gpt/ZA21PJZY  ONLINE       0     0     0||
> ||            gpt/ZA21T6L6  ONLINE       0     0     0||
> ||            gpt/ZA21TN3R  ONLINE       0     0     0||
> |
>
> |root at stor:/home/tarkhil # zpool clear -Fn big_fast_one||
> ||internal error: out of memory|||
>
> while there are plenty of RAM|(96 Gb)|
>
> |gpart shows everything OK|
>
> |root at stor:/home/tarkhil # zdb -AAA -L -e big_fast_one
>
> Configuration for import:
>         vdev_children: 1
>         version: 5000
>         pool_guid: 4972776226197917949
>         name: 'big_fast_one'
>         state: 0
>         hostid: 773241384
>         hostname: 'stor.inf.sudo.su'
>         vdev_tree:
>             type: 'root'
>             id: 0
>             guid: 4972776226197917949
>             children[0]:
>                 type: 'raidz'
>                 id: 0
>                 guid: 58821498572043303
>                 nparity: 1
>                 metaslab_array: 41
>                 metaslab_shift: 38
>                 ashift: 12
>                 asize: 50004131840000
>                 is_log: 0
>                 create_txg: 4
>                 children[0]:
>                     type: 'disk'
>                     id: 0
>                     guid: 13318923208485210326
>                     phys_path:
> 'id1,enc at n50030480005d387f/type at 0/slot at e/elmdesc at 013/p1'
>                     whole_disk: 1
>                     DTL: 57
>                     create_txg: 4
>                     path: '/dev/gpt/ZA21TJA7'
>                 children[1]:
>                     type: 'disk'
>                     id: 1
>                     guid: 5421240647062683539
>                     phys_path:
> 'id1,enc at n50030480005d387f/type at 0/slot at 1/elmdesc at 000/p1'
>                     whole_disk: 1
>                     DTL: 56
>                     create_txg: 4
>                     path: '/dev/gpt/ZA21P6JQ'
>                 children[2]:
>                     type: 'disk'
>                     id: 2
>                     guid: 17788210514601115893
>                     phys_path:
> 'id1,enc at n50030480005d387f/type at 0/slot at 5/elmdesc at 004/p1'
>                     whole_disk: 1
>                     DTL: 55
>                     create_txg: 4
>                     path: '/dev/gpt/ZA21PJZY'
>                 children[3]:
>                     type: 'disk'
>                     id: 3
>                     guid: 11411950711187621765
>                     phys_path:
> 'id1,enc at n50030480005d387f/type at 0/slot at 9/elmdesc at 008/p1'
>                     whole_disk: 1
>                     DTL: 54
>                     create_txg: 4
>                     path: '/dev/gpt/ZA21T6L6'
>                 children[4]:
>                     type: 'disk'
>                     id: 4
>                     guid: 6486033012937503138
>                     phys_path:
> 'id1,enc at n50030480005d387f/type at 0/slot at d/elmdesc at 012/p1'
>                     whole_disk: 1
>                     DTL: 52
>                     create_txg: 4
>                     path: '/dev/gpt/ZA21TN3R'
> zdb: can't open 'big_fast_one': File exists
>
> ZFS_DBGMSG(zdb):
> |
>
> |root at stor:/home/tarkhil # zdb -AAA -L -u -e big_fast_one
> zdb: can't open 'big_fast_one': File exists
> root at stor:/home/tarkhil # zdb -AAA -L -d -e big_fast_one
> zdb: can't open 'big_fast_one': File exists
> root at stor:/home/tarkhil # zdb -AAA -L -h -e big_fast_one
> zdb: can't open 'big_fast_one': File exists
> |
>
> |What should I do? Export and import? Rename zpool.cache and import
> (it's a remote box, I cannot afford another 3 hours to and from it)?
> Something else?|
>
> |--|
>
> |Alex
> |
>
>
>
>
> ---
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-- 
-------------------
Mike Tancsa, tel +1 519 651 3400 x203
Sentex Communications, mike at sentex.net
Providing Internet services since 1994 www.sentex.net
Cambridge, Ontario Canada