Unrecoverable error + No known data errors?

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Apr 16, 2012
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Hello,

I have a proplem where by long copy jobs make my freenas fall over. One disk (ada0p2) becomes unavailable first, then later the whole box falls over. I have previously posted about this but what I really need to know is if I actually have a faulty disk? All 4 are brand new drives. After a reboot the unavailable drive comes back and freenas reports a 'healthy' state. I have had a look at the status and is as below. Bit confused by the contradiction in the 'status:' message and the 'errors:' message. Can somebody please explain this. Also, what excactly does CKSUM '1' mean in reference to ada0p2?

Sorry if this is all info available elsewhere but I had a good scout about and couldn't find anybody with exactly my issue.

Many thanks.

[root@ldn-storage02] ~# zpool status
pool: SAN
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 in progress for 0h5m, 0.66% done, 12h48m to go
config:

NAME STATE READ WRITE CKSUM
SAN ONLINE 0 0 0
raidz1 ONLINE 0 0 0
ada0p2 ONLINE 0 0 1
ada1p2 ONLINE 0 0 0
ada2p2 ONLINE 0 0 0
ada3p2 ONLINE 0 0 0

errors: No known data errors
 
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