ZFS pool won't import

[ernestlotter]

System information

Type	Version/Name
Distribution Name	Ubuntu
Distribution Version	Ubuntu 18.04.2 LTS
Linux Kernel	Linux vino 4.15.0-48-generic #51-Ubuntu SMP Wed Apr 3 08:28:49 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
Architecture
ZFS Version	0.7.5-1ubuntu16.4
SPL Version	0.7.5-1ubuntu1

Hi Guys

I have a 6-disk raidz2 array, of which one disk failed yesterday. I've since removed it, and added a new drive in its place (but haven't done any "zfs replace" yet). Reason for not doing anything yet is - my zpool (called 'DATA') does not import anymore.

As an example, I do:

ernest@vino:~$ sudo zpool status
no pools available
ernest@vino:~$ sudo zpool import DATA
cannot import 'DATA': no such pool available
ernest@vino:~$ sudo zpool import 14452921419047268979
cannot import '14452921419047268979': no such pool available
ernest@vino:~$ sudo zpool import -d /dev/
   pool: DATA
     id: 14452921419047268979
  state: DEGRADED
 status: One or more devices contains corrupted data.
 action: The pool can be imported despite missing or damaged devices.  The
	fault tolerance of the pool may be compromised if imported.
   see: http://zfsonlinux.org/msg/ZFS-8000-4J
 config:

	DATA                        DEGRADED
	  raidz2-0                  DEGRADED
	    wwn-0x50014ee2b555256d  UNAVAIL
	    sdb                     ONLINE
	    sdc                     ONLINE
	    sdd                     ONLINE
	    sde                     ONLINE
	    sdf                     ONLINE
ernest@vino:~$ 

so it seems to detect the zpool from disks, but won't import it.

[ernestlotter]

Thanks kpande, trying it:

ernest@vino:~$ sudo zpool import -f -d /dev/ DATA
cannot import 'DATA': I/O error
	Recovery is possible, but will result in some data loss.
	Returning the pool to its state as of Sun 28 Apr 2019 22:00:53 AEST
	should correct the problem.  Approximately 6 seconds of data
	must be discarded, irreversibly.  Recovery can be attempted
	by executing 'zpool import -F DATA'.  A scrub of the pool
	is strongly recommended after recovery.
ernest@vino:~$ 

[soyfrien]

I have a similar issue, though mine seems worse given the different advice zpool gives for us.

Did you resolve the problem @ernestlotter?

$ zpool import
   pool: darkpool
     id: 5743344949875332602
  state: DEGRADED
 status: One or more devices contains corrupted data.
 action: The pool can be imported despite missing or damaged devices.  The
    fault tolerance of the pool may be compromised if imported.
   see: http://zfsonlinux.org/msg/ZFS-8000-4J
 config:

    darkpool                      DEGRADED
      raidz3-0                    DEGRADED
        wwn-0x5000c5008581aafb    ONLINE
        wwn-0x5000c5008581b61b    ONLINE
        wwn-0x5000c5008581b79f    ONLINE
        wwn-0x5000c5008581b933    ONLINE
        wwn-0x5000c5008581b953    ONLINE
        wwn-0x5000c5008581bdf7    ONLINE
        wwn-0x5000c50085825ec7    ONLINE
        wwn-0x5000c5008581cc03    ONLINE
        wwn-0x5000c5008581e423    UNAVAIL
        wwn-0x5000c5008581fd3f    ONLINE
        wwn-0x5000c50085820b93    ONLINE
        wwn-0x5000c500858211b3    ONLINE
        wwn-0x5000cca267ab0de4    ONLINE
        spare-13                  DEGRADED
          11992420879588183985    FAULTED  corrupted data
          wwn-0x5000c500858252ef  ONLINE
    spares
      wwn-0x5000c500858252ef

$ zpool status
no pools available

$ zpool import darkpool
cannot import 'darkpool': I/O error
    Destroy and re-create the pool from
    a backup source.

$ zpool import -f darkpool
cannot import 'darkpool': I/O error
    Destroy and re-create the pool from
    a backup source.

$ zpool import -fFn darkpool

$ zpool import -F darkpool
cannot import 'darkpool': I/O error
    Destroy and re-create the pool from
    a backup source.

$ zpool import -fFX darkpool
cannot import 'darkpool': I/O error
    Destroy and re-create the pool from
    a backup source.

[jamescorbett]

I have the same issue, one drive failed and won't import.

   pool: pool
     id: 12242908531632234494
  state: DEGRADED
 status: One or more devices contains corrupted data.
 action: The pool can be imported despite missing or damaged devices.  The
        fault tolerance of the pool may be compromised if imported.
   see: http://zfsonlinux.org/msg/ZFS-8000-4J
 config:

        pool                        DEGRADED
          raidz1-0                  DEGRADED
            wwn-0x5000cca36ac8d8cc  ONLINE
            wwn-0x5000cca36aca9bc3  ONLINE
            wwn-0x50014ee25a29dd92  ONLINE
            wwn-0x50014ee2b05bd944  UNAVAIL

[soyfrien]

I have the same issue, one drive failed and won't import.

   pool: pool
     id: 12242908531632234494
  state: DEGRADED
 status: One or more devices contains corrupted data.
 action: The pool can be imported despite missing or damaged devices.  The
        fault tolerance of the pool may be compromised if imported.
   see: http://zfsonlinux.org/msg/ZFS-8000-4J
 config:

        pool                        DEGRADED
          raidz1-0                  DEGRADED
            wwn-0x5000cca36ac8d8cc  ONLINE
            wwn-0x5000cca36aca9bc3  ONLINE
            wwn-0x50014ee25a29dd92  ONLINE
            wwn-0x50014ee2b05bd944  UNAVAIL

I was eventually able to mount the pool.

Please see here: https://serverfault.com/a/1004188/52734

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