Crashed ZFS

[Александр Поволоцкий]

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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