zfs discuss - Jul 2009 - zpool replace leaves pool degraded after resilvering

Hi,

I have a pc where a pool suffered a disk failure, I did replace the failed disk
and the pool resilvered but, after resilvering, it was in this state

maurilio at biscotto:~# zpool status iscsi
  pool: iscsi
 state: DEGRADED
status: One or more devices has experienced an unrecoverable error.  An
        attempt was made to correct the error.  Applications are unaffected.
action: Determine if the device needs to be replaced, and clear the errors
        using ''zpool clear'' or replace the device with
''zpool replace''.
   see: http://www.sun.com/msg/ZFS-8000-9P
 scrub: resilver completed after 12h33m with 0 errors on Thu Jul  9 00:07:12
2009
config:

        NAME         STATE     READ WRITE CKSUM
        iscsi        DEGRADED     0     0     0
          mirror     ONLINE       0     0     0
            c2t0d0   ONLINE       0     0     0
            c2t5d0   ONLINE       0     0     0
          mirror     ONLINE       0     0     0
            c2t6d0   ONLINE       0     0     0
            c2t8d0   ONLINE       0     0     0
          mirror     ONLINE       0     0     0
            c11t0d0  ONLINE       0     0     0
            c11t1d0  ONLINE       0     0     0
          mirror     DEGRADED     0     0     0
            c11t2d0  ONLINE       0     0     0
            c11t3d0  DEGRADED     0     0 23,0M  too many errors
        cache
          c1t4d0     ONLINE       0     0     0

errors: No known data errors

It says it resilvered ok and that there are no known data errors, but pool is
still marked as degraded.

I did a zpool clear and now it says it is ok

maurilio at biscotto:~# zpool status
  pool: iscsi
 state: ONLINE
 scrub: resilver completed after 12h33m with 0 errors on Thu Jul  9 00:07:12
2009
config:

        NAME         STATE     READ WRITE CKSUM
        iscsi        ONLINE       0     0     0
          mirror     ONLINE       0     0     0
            c2t0d0   ONLINE       0     0     0
            c2t5d0   ONLINE       0     0     0
          mirror     ONLINE       0     0     0
            c2t6d0   ONLINE       0     0     0
            c2t8d0   ONLINE       0     0     0
          mirror     ONLINE       0     0     0
            c11t0d0  ONLINE       0     0     0
            c11t1d0  ONLINE       0     0     0
          mirror     ONLINE       0     0     0
            c11t2d0  ONLINE       0     0     0
            c11t3d0  ONLINE       0     0     0  326G resilvered
        cache
          c1t4d0     ONLINE       0     0     0

errors: No known data errors

Look at c11t3d0 which now reads 326G resilvered; my question is: is the pool ok?
Why had I to issue a zpool clear if the resilvering process completed without
problems?

Best regards.

Maurilio.
-- 
This message posted from opensolaris.org

I forgot to mention this is a 

SunOS biscotto 5.11 snv_111a i86pc i386 i86pc

version.

Maurilio.
-- 
This message posted from opensolaris.org

2009.06 is v111b, but you''re running v111a.  I don''t know, but
perhaps the a->b transition addressed this issue, among others?
-- 
This message posted from opensolaris.org