Date: Wed, 04 Nov 2009 14:23:48 +1300 From: Steven Samuel Cole <steven.samuel.cole@gmail.com> To: questions@freebsd.org Subject: ZFS non-zero checksum and permanent error with deleted file Message-ID: <4AF0D7A4.3070705@gmail.com>
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Hello,
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:
[user@host ~]$ sudo zpool clear zpool01
...
[user@host ~]$ sudo zpool scrub zpool01
...
[user@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
config:
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:
zpool01:<0x3736a>
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.
[user@host ~]$ df -h /mnt/zpool01/
Filesystem Size Used Avail Capacity Mounted on
zpool01 1.3T 1.2T 133G 90% /mnt/zpool01
[user@host ~]$ uname -a
FreeBSD host.domain 7.2-RELEASE FreeBSD 7.2-RELEASE #0: Fri May 1
07:18:07 UTC 2009
root@driscoll.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC amd64
Cheers,
ssc
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