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How can I recover my ZFS pool, which suddenly went offline and reports that it was “last used by another system”?


Missing whole disk device in OpenSolaris“zpool replace” hangs and locks up the poolZFS: bringing a disk online in an unavailable poolzpool import with missing devicezpool import: volume FAULTED with corrupted data, is it possible to save some data?FreeNAS zfs zraid two failing diskszpool import one or more devices is currently unavailablezpool forgot all data devices of a pool: how to bring them online again?Restoring data after zfs destroyHow to correctly attach a disk to a zpool to create a mirror? - zpool attach says no such pool or dataset






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2















tl;dr: I am running a FreeBSD 11.2 NAS server with ZFS on a server with 16GB ECC memory. I've discovered that my main pool has disappeared. ZFS can see the pool, but reports fault ZFS-8000-EY and that it cannot import 'tank': pool may be in use from other system, it was last accessed by overkill (hostid: 0xfe4ac89c) on Sat Apr 13 04:16:22 2019, however this pool has never been used by another system and overkill is the current host. I am afraid my pool is corrupt. What should I do to attempt to recover it? I have backups, but they are out of date since I have to do them manually. I have not tried to run zpool import -f tank yet, since I want to be careful to avoid making anything worse.




Full question:



I am running a FreeBSD 11.2 NAS server with ZFS. I returned from vacation to find the server up, but the NAS volumes were inaccessible. When I ssh'd into the box, I found that my man pool tank was missing:



root@overkill:/home/root # zpool status pool: zroot state: ONLINE status: Some supported features are not enabled on the pool. The pool can
still be used, but some features are unavailable. action: Enable all features using 'zpool upgrade'. Once this is done,
the pool may no longer be accessible by software that does not support
the features. See zpool-features(7) for details. scan: scrub repaired 0 in 0h0m with 0 errors on Sat Mar 23 03:01:44 2019 config:


NAME STATE READ WRITE CKSUM
zroot ONLINE 0 0 0
mirror-0 ONLINE 0 0 0
diskid/DISK-BTWL337404XT120LGNp2 ONLINE 0 0 0
diskid/DISK-PHWL551601QS120LGNp2 ONLINE 0 0 0


errors: No known data errors


The drives appear to be available, and I tried to import them, but ZFS reports that it cannot import 'tank': pool may be in use from other system, it was last accessed by overkill (hostid: 0xfe4ac89c) on Sat Apr 13 04:16:22 2019. This is odd, because I have never used these disks on another system and the hostname reported is the hostname of the machine they're attached to:



root@overkill:/home/root # zpool import
   pool: tank
     id: 14388138656504929636
  state: ONLINE
status: The pool was last accessed by another system.
action: The pool can be imported using its name or numeric identifier and
        the '-f' flag.
   see: http://illumos.org/msg/ZFS-8000-EY
config:


        tank                    ONLINE
          raidz1-0              ONLINE
            gpt/wd-red-8tb-1    ONLINE
            gpt/wd-red-8tb-2    ONLINE
            gpt/wd-red-8tb-3    ONLINE
            gpt/tosh-nas-8tb-1  ONLINE


root@overkill:/home/root # zpool import tank
cannot import 'tank': pool may be in use from other system, it was last accessed by overkill (hostid: 0xfe4ac89c) on Sat Apr 13 04:16:22 2019
use '-f' to import anyway


I'm afraid my pool may be corrupt. I have backups, but they are somewhat out of date. What should I do to recover my pool?










share|improve this question






























    2















    tl;dr: I am running a FreeBSD 11.2 NAS server with ZFS on a server with 16GB ECC memory. I've discovered that my main pool has disappeared. ZFS can see the pool, but reports fault ZFS-8000-EY and that it cannot import 'tank': pool may be in use from other system, it was last accessed by overkill (hostid: 0xfe4ac89c) on Sat Apr 13 04:16:22 2019, however this pool has never been used by another system and overkill is the current host. I am afraid my pool is corrupt. What should I do to attempt to recover it? I have backups, but they are out of date since I have to do them manually. I have not tried to run zpool import -f tank yet, since I want to be careful to avoid making anything worse.




    Full question:



    I am running a FreeBSD 11.2 NAS server with ZFS. I returned from vacation to find the server up, but the NAS volumes were inaccessible. When I ssh'd into the box, I found that my man pool tank was missing:



    root@overkill:/home/root # zpool status pool: zroot state: ONLINE status: Some supported features are not enabled on the pool. The pool can
    still be used, but some features are unavailable. action: Enable all features using 'zpool upgrade'. Once this is done,
    the pool may no longer be accessible by software that does not support
    the features. See zpool-features(7) for details. scan: scrub repaired 0 in 0h0m with 0 errors on Sat Mar 23 03:01:44 2019 config:


    NAME STATE READ WRITE CKSUM
    zroot ONLINE 0 0 0
    mirror-0 ONLINE 0 0 0
    diskid/DISK-BTWL337404XT120LGNp2 ONLINE 0 0 0
    diskid/DISK-PHWL551601QS120LGNp2 ONLINE 0 0 0


    errors: No known data errors


    The drives appear to be available, and I tried to import them, but ZFS reports that it cannot import 'tank': pool may be in use from other system, it was last accessed by overkill (hostid: 0xfe4ac89c) on Sat Apr 13 04:16:22 2019. This is odd, because I have never used these disks on another system and the hostname reported is the hostname of the machine they're attached to:



    root@overkill:/home/root # zpool import
       pool: tank
         id: 14388138656504929636
      state: ONLINE
    status: The pool was last accessed by another system.
    action: The pool can be imported using its name or numeric identifier and
            the '-f' flag.
       see: http://illumos.org/msg/ZFS-8000-EY
    config:


            tank                    ONLINE
              raidz1-0              ONLINE
                gpt/wd-red-8tb-1    ONLINE
                gpt/wd-red-8tb-2    ONLINE
                gpt/wd-red-8tb-3    ONLINE
                gpt/tosh-nas-8tb-1  ONLINE


    root@overkill:/home/root # zpool import tank
    cannot import 'tank': pool may be in use from other system, it was last accessed by overkill (hostid: 0xfe4ac89c) on Sat Apr 13 04:16:22 2019
    use '-f' to import anyway


    I'm afraid my pool may be corrupt. I have backups, but they are somewhat out of date. What should I do to recover my pool?










    share|improve this question


























      2












      2








      2








      tl;dr: I am running a FreeBSD 11.2 NAS server with ZFS on a server with 16GB ECC memory. I've discovered that my main pool has disappeared. ZFS can see the pool, but reports fault ZFS-8000-EY and that it cannot import 'tank': pool may be in use from other system, it was last accessed by overkill (hostid: 0xfe4ac89c) on Sat Apr 13 04:16:22 2019, however this pool has never been used by another system and overkill is the current host. I am afraid my pool is corrupt. What should I do to attempt to recover it? I have backups, but they are out of date since I have to do them manually. I have not tried to run zpool import -f tank yet, since I want to be careful to avoid making anything worse.




      Full question:



      I am running a FreeBSD 11.2 NAS server with ZFS. I returned from vacation to find the server up, but the NAS volumes were inaccessible. When I ssh'd into the box, I found that my man pool tank was missing:



      root@overkill:/home/root # zpool status pool: zroot state: ONLINE status: Some supported features are not enabled on the pool. The pool can
      still be used, but some features are unavailable. action: Enable all features using 'zpool upgrade'. Once this is done,
      the pool may no longer be accessible by software that does not support
      the features. See zpool-features(7) for details. scan: scrub repaired 0 in 0h0m with 0 errors on Sat Mar 23 03:01:44 2019 config:


      NAME STATE READ WRITE CKSUM
      zroot ONLINE 0 0 0
      mirror-0 ONLINE 0 0 0
      diskid/DISK-BTWL337404XT120LGNp2 ONLINE 0 0 0
      diskid/DISK-PHWL551601QS120LGNp2 ONLINE 0 0 0


      errors: No known data errors


      The drives appear to be available, and I tried to import them, but ZFS reports that it cannot import 'tank': pool may be in use from other system, it was last accessed by overkill (hostid: 0xfe4ac89c) on Sat Apr 13 04:16:22 2019. This is odd, because I have never used these disks on another system and the hostname reported is the hostname of the machine they're attached to:



      root@overkill:/home/root # zpool import
         pool: tank
           id: 14388138656504929636
        state: ONLINE
      status: The pool was last accessed by another system.
      action: The pool can be imported using its name or numeric identifier and
              the '-f' flag.
         see: http://illumos.org/msg/ZFS-8000-EY
      config:


              tank                    ONLINE
                raidz1-0              ONLINE
                  gpt/wd-red-8tb-1    ONLINE
                  gpt/wd-red-8tb-2    ONLINE
                  gpt/wd-red-8tb-3    ONLINE
                  gpt/tosh-nas-8tb-1  ONLINE


      root@overkill:/home/root # zpool import tank
      cannot import 'tank': pool may be in use from other system, it was last accessed by overkill (hostid: 0xfe4ac89c) on Sat Apr 13 04:16:22 2019
      use '-f' to import anyway


      I'm afraid my pool may be corrupt. I have backups, but they are somewhat out of date. What should I do to recover my pool?










      share|improve this question
















      tl;dr: I am running a FreeBSD 11.2 NAS server with ZFS on a server with 16GB ECC memory. I've discovered that my main pool has disappeared. ZFS can see the pool, but reports fault ZFS-8000-EY and that it cannot import 'tank': pool may be in use from other system, it was last accessed by overkill (hostid: 0xfe4ac89c) on Sat Apr 13 04:16:22 2019, however this pool has never been used by another system and overkill is the current host. I am afraid my pool is corrupt. What should I do to attempt to recover it? I have backups, but they are out of date since I have to do them manually. I have not tried to run zpool import -f tank yet, since I want to be careful to avoid making anything worse.




      Full question:



      I am running a FreeBSD 11.2 NAS server with ZFS. I returned from vacation to find the server up, but the NAS volumes were inaccessible. When I ssh'd into the box, I found that my man pool tank was missing:



      root@overkill:/home/root # zpool status pool: zroot state: ONLINE status: Some supported features are not enabled on the pool. The pool can
      still be used, but some features are unavailable. action: Enable all features using 'zpool upgrade'. Once this is done,
      the pool may no longer be accessible by software that does not support
      the features. See zpool-features(7) for details. scan: scrub repaired 0 in 0h0m with 0 errors on Sat Mar 23 03:01:44 2019 config:


      NAME STATE READ WRITE CKSUM
      zroot ONLINE 0 0 0
      mirror-0 ONLINE 0 0 0
      diskid/DISK-BTWL337404XT120LGNp2 ONLINE 0 0 0
      diskid/DISK-PHWL551601QS120LGNp2 ONLINE 0 0 0


      errors: No known data errors


      The drives appear to be available, and I tried to import them, but ZFS reports that it cannot import 'tank': pool may be in use from other system, it was last accessed by overkill (hostid: 0xfe4ac89c) on Sat Apr 13 04:16:22 2019. This is odd, because I have never used these disks on another system and the hostname reported is the hostname of the machine they're attached to:



      root@overkill:/home/root # zpool import
         pool: tank
           id: 14388138656504929636
        state: ONLINE
      status: The pool was last accessed by another system.
      action: The pool can be imported using its name or numeric identifier and
              the '-f' flag.
         see: http://illumos.org/msg/ZFS-8000-EY
      config:


              tank                    ONLINE
                raidz1-0              ONLINE
                  gpt/wd-red-8tb-1    ONLINE
                  gpt/wd-red-8tb-2    ONLINE
                  gpt/wd-red-8tb-3    ONLINE
                  gpt/tosh-nas-8tb-1  ONLINE


      root@overkill:/home/root # zpool import tank
      cannot import 'tank': pool may be in use from other system, it was last accessed by overkill (hostid: 0xfe4ac89c) on Sat Apr 13 04:16:22 2019
      use '-f' to import anyway


      I'm afraid my pool may be corrupt. I have backups, but they are somewhat out of date. What should I do to recover my pool?







      freebsd zfs data-recovery freenas






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Apr 23 at 16:16







      Kaypro II

















      asked Apr 22 at 15:57









      Kaypro IIKaypro II

      175119




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