# [OmniOS-discuss] ZFS Questions. Is a bug ?

"Daniel D. Gonçalves" daniel at dgnetwork.com.br
Fri Aug 30 18:26:26 UTC 2013

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    My ZFS POOL is over a month doing RESILVER in LOOP thus ending one
    RESILVER after a few minutes, another starts.
    The replace command is never finished, did three days ago subsitution of
    a device, and it never ends:
               mirror-3       DEGRADED     0     0    28
                 c17t20d1     ONLINE       0     0    28
                 replacing-1  DEGRADED    28     0     0
                   c17t22d1   UNAVAIL      0     0     0 cannot open
                   c17t13d1   ONLINE       0     0    28 (resilvering)

    In the mirror belowI would like to remove all devices with status
    UNAVAIL and do a replace again for a correct device, but the commands
    OFFLINE, REMOVE, DETACH not work:
               mirror-1       DEGRADED 28     0     0
                 c17t24d1     ONLINE       0     0    28 (resilvering)
                 replacing-1  UNAVAIL      0     0     0 insufficient replicas
                   c17t22d1   UNAVAIL      0     0     0 cannot open
                   c17t12d1   UNAVAIL      0     0     0 cannot open
                   c17t21d1   UNAVAIL      0     0     0 cannot open

    My entire POOL:
    pool: STORAGE01
      state: DEGRADED
    status: One or more devices is currently being resilvered.  The pool will
             continue to function, possibly in a degraded state.
    action: Wait for the resilver to complete.
       scan: resilver in progress since Fri Aug 30 14:42:42 2013
         530G scanned out of 18.4T at 227M/s, 23h1m to go
         62.1G resilvered, 2.80% done
    config:

             NAME             STATE     READ WRITE CKSUM
             STORAGE01        DEGRADED    14     0    16
               mirror-0       ONLINE       0     0     0
                 c17t15d1     ONLINE       0     0     0
                 c17t19d1     ONLINE       0     0     0
               mirror-1       DEGRADED    28     0     0
                 c17t24d1     ONLINE       0     0    28 (resilvering)
                 replacing-1  UNAVAIL      0     0     0 insufficient replicas
                   c17t22d1   UNAVAIL      0     0     0 cannot open
                   c17t12d1   UNAVAIL      0     0     0 cannot open
                   c17t21d1   UNAVAIL      0     0     0 cannot open
               mirror-2       ONLINE       0     0     0
                 c17t18d1     ONLINE       0     0     0 (resilvering)
                 c17t17d1     ONLINE       0     0     0 (resilvering)
               mirror-3       DEGRADED     0     0    32
                 c17t20d1     ONLINE       0     0    32
                 replacing-1  DEGRADED    32     0     0
                   c17t22d1   UNAVAIL      0     0     0 cannot open
                   c17t13d1   ONLINE       0     0    32 (resilvering)
               mirror-5       ONLINE       0     0     0
                 c17t25d1     ONLINE       0     0     0
                 c17t27d1     ONLINE       0     0     0
               mirror-6       ONLINE       0     0     0
                 c17t26d1     ONLINE       0     0     0
                 c17t28d1     ONLINE       0     0     0
               mirror-7       ONLINE       0     0     0
                 c17t29d1     ONLINE       0     0     0
                 c17t31d1     ONLINE       0     0     0
               mirror-8       ONLINE       0     0     0
                 c17t32d1     ONLINE       0     0     0
                 c17t30d1     ONLINE       0     0     0
               mirror-9       ONLINE       0     0     0
                 c17t23d1     ONLINE       0     0     0
                 c17t14d1     ONLINE       0     0     0
             logs
               mirror-4       ONLINE       0     0     0
                 c14t1d0      ONLINE       0     0     0
                 c14t3d0      ONLINE       0     0     0
             cache
               c14t4d0        ONLINE       0     0     0

    Need urgent help to solve this. I believe it is a bug in ZFS.

    Thanks,

    Daniel

    Em 22/08/2013 17:42, Saso Kiselkov escreveu:
    > On 8/22/13 9:20 PM, "Daniel D. Gonçalves" wrote:
    >> Thanks Saso,
    >>
    >> To stop RESILVER, which device I to set to OFFLINE?
    > The one that says 'resilvering'. But beware that that means that the
    > pool might not have full fault tolerance.
    >
    >> I do not know how the device "c17t33d1" was placed in the
    >> MIRROR-11/REPLACING-1, how do I remove it from there?
    > If you can, let it run to completion before attempting any further
    > manipulation. The pool seems to be in quite an unhappy state anyway, so
    > better not compound the situation by doing more changes. Let the thing
    > resync back up, find the files that have the data errors in them ("zpool
    > status -v" I think), restore them or delete them and then post a new
    > "zpool status" to the list - then we'll see what can be done.
    >
    > Above all, be patient if you don't want to lose your data.
    >
    > Cheers,

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