Hi Uwe,
You can use the fmdump feature to help determine whether these disk
errors are persistent.
Using fmdump -ev will provide a lot of detail but you can review
how many disks errors have occurred and for how long.
A brief description is provided here:
http://www.solarisinternals.com/wiki/index.php/ZFS_Troubleshooting_Guide#Diagnosing_Potential_Problems
Cindy
Uwe Dippel wrote:
My question is related to this:
# zpool status
pool: rpool
state: ONLINE
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: scrub completed after 0h46m with 0 errors on Tue Apr 14 00:19:34
2009
config:
NAME STATE READ WRITE CKSUM
rpool ONLINE 0 0 0
c1d0s0 ONLINE 0 0 1
errors: No known data errors
Since it is a rather new drive and has no trouble with Ubuntu, I dared
to clean it:
# zpool clear rpool
and checked it for errors:
# zpool scrub rpool
# zpool status -v
pool: rpool
state: ONLINE
scrub: scrub completed after 0h47m with 0 errors on Tue Apr 14 23:53:48
2009
config:
NAME STATE READ WRITE CKSUM
rpool ONLINE 0 0 0
c1d0s0 ONLINE 0 0 0
errors: No known data errors
Now I wonder where that error came from. It was just a single checksum
error. It couldn't go away with an earlier scrub, and seemingly left no
traces of badness on the drive. Something serious? At least it looks a
tad contradictory: "Applications are unaffected.", it is unrecoverable,
and once cleared, there is no error left.
Curious,
Uwe
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