# [OmniOS-discuss] ZFS Questions

Saso Kiselkov skiselkov.ml at gmail.com
Thu Aug 22 19:17:36 UTC 2013

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    On 8/22/13 8:00 PM, "Daniel D. Gonçalves" wrote:
    > Hi all,
    >
    > I have many questions about the ZFS on OmniOS:

    Hi Daniel,

    > 1) It is possible to stop the RESILVER?

    Offline the device.

    > 2) I can not remove the device FAULTED:
    >
    > "              c17t22d1   FAULTED      0     0     0  corrupted data"
    >
    > root at storage01:~# zpool offline STORAGE01 c17t22d1
    > cannot offline c17t22d1: no valid replicas
    > root at storage01:~# zpool detach STORAGE01 c17t22d1
    > cannot detach c17t22d1: no valid replicas
    > root at storage01:~# zpool remove STORAGE01 c17t22d1
    > cannot remove c17t22d1: only inactive hot spares, cache, top-level, or
    > log devices can be removed
    > root at storage01:~#

    Detach only works on vdevs in a mirror. If your disk is in a raidz or is
    in no redundancy group at all (aka top-level vdev), you have to replace
    it. ZFS doesn't at the moment allow for removing drives in ways that
    reduces the total capacity of the pool.

    > 3) The STATUS "Replacing-1" never changes, how do?
    >
    > Below, the status of my POOL:
    >
    > root at storage01:~# zpool status
    >   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 Thu Aug 22 14:28:34 2013
    >     696G scanned out of 18.3T at 113M/s, 45h31m to go
    >     166G resilvered, 3.71% done
    > config:
    >
    >         NAME             STATE     READ WRITE CKSUM
    >         STORAGE01        DEGRADED     0     0     0
    >           mirror-0       ONLINE       0     0     0
    >             c17t36d1     ONLINE       0     0     0
    >             c17t19d1     ONLINE       0     0     0
    >           mirror-1       DEGRADED     0     0     0
    >             c17t24d1     ONLINE       0     0     0  (resilvering)
    >             replacing-1  DEGRADED     0     0     0
    >               c17t22d1   FAULTED      0     0     0  corrupted data
    >               c17t33d1   ONLINE       0     0     0  (resilvering)
    >               c17t21d1   ONLINE       0     0     0  (resilvering)
    >           mirror-2       ONLINE       0     0     0
    >             c17t18d1     ONLINE       0     0     0
    >             c17t17d1     ONLINE       0     0     0
    >           mirror-3       ONLINE       0     0     0
    >             c17t20d1     ONLINE       0     0     0
    >             c17t22d1     ONLINE       0     0     0
    >           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
    >             c17t34d1     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
    >
    > errors: 11 data errors, use '-v' for a list
    >
    >   pool: rpool
    >  state: ONLINE
    >   scan: none requested
    > config:
    >
    >         NAME         STATE     READ WRITE CKSUM
    >         rpool        ONLINE       0     0     0
    >           c14t5d0s0  ONLINE       0     0     0
    >
    > errors: No known data errors
    > root at storage01:~#

    You somehow managed to damage your pool by shuffling devices around too
    liberally, leaving you with both halves of the mirror in a bad state.
    It's quite difficult to tell at this stage what's going on. Let it run
    for a while and you'll see if its making any progress. By the looks of
    it it should take another 45 hours to complete (large pools take a long
    time to resilver, that's just a fact of life).

    --
    Saso

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