been having issues with my FreeNAS 9.10 ZFS pool.
One of the drives was being warned as having many bad sectors so I decided to replace it. Had tremendous problems getting 'zpool replace' to recognise the new drive (it was in ada3, but it wouldn't accept that as parameter). Only thing I could figure out was to add the new drive as a 'spare' to the zpool and then use zpool replace [poolname] [old device id] [spare device id]
This worked and resilvered the new drive. However, once the resilver completed the pool remains in degraded state and seems to want the old drive back.
How do I convince it to 'forget' the old drive and accept the new one permanently??
many thanks
pool: ZFS_NAS
state: DEGRADED
status: One or more devices could not be opened. Sufficient replicas exist for
the pool to continue functioning in a degraded state.
action: Attach the missing device and online it using 'zpool online'.
see: http://illumos.org/msg/ZFS-8000-2Q
scan: resilvered 989G in 4h42m with 0 errors on Mon May 2 19:45:33 2016
config:
NAME STATE READ WRITE CKSUM
ZFS_NAS DEGRADED 0 0 0
raidz1-0 DEGRADED 0 0 0
spare-0 DEGRADED 0 0 0
12082773611957310038 UNAVAIL 0 0 0 was /dev/gptid/1418d56c-431b-11e4-b9f7-28924a2f106f
gptid/503d6d1c-106e-11e6-a169-28924a2f106f ONLINE 0 0 0
gptid/1608e28a-431b-11e4-b9f7-28924a2f106f ONLINE 0 0 0
gptid/1699dab6-431b-11e4-b9f7-28924a2f106f ONLINE 0 0 0
spares
16673430511205791764 INUSE was /dev/gptid/503d6d1c-106e-11e6-a169-28924a2f106f
errors: No known data errors
You have to remove the failed drive:
zpool detach ZFS_NAS gptid/1418d56c-431b-11e4-b9f7-28924a2f106f
or
zpool detach ZFS_NAS 12082773611957310038
Then the spare drive (gptid/503d6d1c-106e-11e6-a169-28924a2f106f) becomes a ONLINE member of ZFS_NAS pool.
Now you can add a new spare to the pool