After a scrub of a pool with 3 raidz2 vdevs (each with 5 disks in them) I see
the following status output. Notice that the raidz2 vdev has 2 checksum errors,
but only one disk inside the raidz2 vdev has a checksum error. How is this
possible? I thought that you would have to have 3 errors in the same 'stripe'
within a raidz2 vdev in order for the error to become unrecoverable.
And I have not reset any errors with zpool clear ...
Comments will be appreciated. Thanks.
$ zpool status -v
pool: tank
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: scrub completed with 1 errors on Mon Jul 23 19:59:07 2007
config:
NAME STATE READ WRITE CKSUM
tank ONLINE 0 0 2
raidz2 ONLINE 0 0 2
c2t0d0 ONLINE 0 0 1
c2t1d0 ONLINE 0 0 0
c2t2d0 ONLINE 0 0 0
c2t3d0 ONLINE 0 0 0
c2t4d0 ONLINE 0 0 0
raidz2 ONLINE 0 0 0
c2t5d0 ONLINE 0 0 0
c2t6d0 ONLINE 0 0 0
c2t7d0 ONLINE 0 0 0
c2t8d0 ONLINE 0 0 0
c2t9d0 ONLINE 0 0 0
raidz2 ONLINE 0 0 0
c2t10d0 ONLINE 0 0 0
c2t11d0 ONLINE 0 0 0
c2t12d0 ONLINE 0 0 1
c2t13d0 ONLINE 0 0 0
c2t14d0 ONLINE 0 0 0
spares
c2t15d0 AVAIL
errors: The following persistent errors have been detected:
DATASET OBJECT RANGE
5 5fe9784 lvl=0 blkid=40299
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