zpool Mirror state FAULTED and REMOVED state

Tuesday, August 31, 2010 at 11:26 PM
Clear FAULTED issue in the zpool

# zpool status
pool: pool
state: DEGRADED
status: One or more devices are faulted in response to persistent errors.
Sufficient replicas exist for the pool to continue functioning in a
degraded state.
action: Replace the faulted device, or use 'zpool clear' to mark the device
repaired.
scrub: none requested
config:

NAME STATE READ WRITE CKSUM
pool DEGRADED 0 0 0
mirror DEGRADED 0 0 0
c1t50060E8005707700d14 FAULTED 2 151 0 too many errors
c5t50060E8005707711d14 ONLINE 0 0 0
mirror DEGRADED 0 0 0
c1t50060E8005707700d15 FAULTED 0 179 0 too many errors
c5t50060E8005707711d15 ONLINE 0 0 0
mirror DEGRADED 0 0 0
c1t50060E8005707700d16 FAULTED 0 182 0 too many errors
c5t50060E8005707711d16 ONLINE 0 0 0
mirror DEGRADED 0 0 0
c1t50060E8005707700d17 FAULTED 0 171 0 too many errors
c5t50060E8005707711d17 ONLINE 0 0 0
mirror DEGRADED 0 0 0
c1t50060E8005707700d18 REMOVED 0 0 0
c5t50060E8005707711d18 ONLINE 0 0 0
mirror DEGRADED 0 0 0
c1t50060E8005707700d19 REMOVED 0 0 0
c5t50060E8005707711d19 ONLINE 0 0 0
mirror DEGRADED 0 0 0
c1t50060E8005707700d20 REMOVED 0 0 0
c5t50060E8005707711d20 ONLINE 0 0 0

errors: No known data errors
bash-3.00#

The below command will clear the faulty error

#zpool clear


bash-3.00# zpool status
pool: pool
state: DEGRADED
scrub: none requested
config:

NAME STATE READ WRITE CKSUM
pool DEGRADED 0 0 0
mirror ONLINE 0 0 0
c1t50060E8005707700d14 ONLINE 0 0 0
c5t50060E8005707711d14 ONLINE 0 0 0
mirror ONLINE 0 0 0
c1t50060E8005707700d15 ONLINE 0 0 0
c5t50060E8005707711d15 ONLINE 0 0 0
mirror ONLINE 0 0 0
c1t50060E8005707700d16 ONLINE 0 0 0
c5t50060E8005707711d16 ONLINE 0 0 0
mirror ONLINE 0 0 0
c1t50060E8005707700d17 ONLINE 0 0 0
c5t50060E8005707711d17 ONLINE 0 0 0
mirror DEGRADED 0 0 0
c1t50060E8005707700d18 REMOVED 0 0 0
c5t50060E8005707711d18 ONLINE 0 0 0
mirror DEGRADED 0 0 0
c1t50060E8005707700d19 REMOVED 0 0 0
c5t50060E8005707711d19 ONLINE 0 0 0
mirror DEGRADED 0 0 0
c1t50060E8005707700d20 REMOVED 0 0 0
c5t50060E8005707711d20 ONLINE 0 0 0

errors: No known data errors
bash-3.00#

Some time SAN storage disk will loss the connection and back to online but in the ZFS pool it shows REMOVED state. Clear the removed error with detaching and reattching the zpool disks

bash-3.00# zpool detach pool c1t50060E8005707700d18
bash-3.00#

bash-3.00# zpool attach pool c5t50060E8005707711d18 c1t50060E8005707700d18


bash-3.00# zpool status
pool: pool
state: ONLINE
scrub: resilver completed after 0h0m with 0 errors on Wed Sep 1 06:59:02 2010
config:

NAME STATE READ WRITE CKSUM
pool ONLINE 0 0 0
mirror ONLINE 0 0 0
c1t50060E8005707700d14 ONLINE 0 0 0
c5t50060E8005707711d14 ONLINE 0 0 0
mirror ONLINE 0 0 0
c1t50060E8005707700d15 ONLINE 0 0 0
c5t50060E8005707711d15 ONLINE 0 0 0
mirror ONLINE 0 0 0
c1t50060E8005707700d16 ONLINE 0 0 0
c5t50060E8005707711d16 ONLINE 0 0 0
mirror ONLINE 0 0 0
c1t50060E8005707700d17 ONLINE 0 0 0
c5t50060E8005707711d17 ONLINE 0 0 0
mirror ONLINE 0 0 0
c5t50060E8005707711d18 ONLINE 0 0 0
c1t50060E8005707700d18 ONLINE 0 0 0
mirror ONLINE 0 0 0
c1t50060E8005707700d19 ONLINE 0 0 0
c5t50060E8005707711d19 ONLINE 0 0 0
mirror ONLINE 0 0 0
c1t50060E8005707700d20 ONLINE 0 0 0
c5t50060E8005707711d20 ONLINE 0 0 0

errors: No known data errors
bash-3.00#

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