I couldn't find a dedicated FreeBSD/ZFS mailing list, so I hope this is the right place to ask.

I'd like some advice if I should rely on one of my ZFS pools:

[u...@host ~]$ sudo zpool clear zpool01
[u...@host ~]$ sudo zpool scrub zpool01
[u...@host ~]$ sudo zpool status -v zpool01
  pool: zpool01
 state: ONLINE
status: One or more devices has experienced an error resulting in data
        corruption.  Applications may be affected.
action: Restore the file in question if possible.  Otherwise restore the
        entire pool from backup.
   see: http://www.sun.com/msg/ZFS-8000-8A
 scrub: none requested

        NAME        STATE     READ WRITE CKSUM
        zpool01     ONLINE       0     0     4
          raidz1    ONLINE       0     0     4
            ad12    ONLINE       0     0     0
            ad14    ONLINE       0     0     0
            ad16    ONLINE       0     0     0
            ad18    ONLINE       0     0     0

errors: Permanent errors have been detected in the following files:


How can there be an error in a file that does not seem to exist ?
How can I clear / recover from the error ?

I have read the corresponding documentation and did the obligatory research, but so far, the only option I can see is a full destroy/create cycle - which seems an overkill, considering the pool size and the fact that there seems to be only one (deleted ?) file involved.

[u...@host ~]$ df -h /mnt/zpool01/
Filesystem    Size    Used   Avail Capacity  Mounted on
zpool01       1.3T    1.2T    133G    90%    /mnt/zpool01

[u...@host ~]$ uname -a
FreeBSD host.domain 7.2-RELEASE FreeBSD 7.2-RELEASE #0: Fri May 1 07:18:07 UTC 2009 r...@driscoll.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC amd64


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