[root@pr0nserv ~]# zpool status
pool: pr0nserv
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://www.sun.com/msg/ZFS-8000-D3
scrub: none requested
config:
NAME STATE READ WRITE CKSUM
pr0nserv DEGRADED 0 0 0
mirror ONLINE 0 0 0
ad4 ONLINE 0 0 0
ad6 ONLINE 0 0 0
mirror DEGRADED 0 0 0
ad8 UNAVAIL 0 0 0 cannot open
ad10 ONLINE 0 0 0
errors: No known data errors
Put the disk offline:
[root@pr0nserv ~]# zpool offline pr0nserv ad8
[root@pr0nserv ~]# zpool status
pool: pr0nserv
state: DEGRADED
status: One or more devices has been taken offline by the administrator.
Sufficient replicas exist for the pool to continue functioning in a
degraded state.
action: Online the device using 'zpool online' or replace the device with
'zpool replace'.
scrub: none requested
config:
NAME STATE READ WRITE CKSUM
pr0nserv DEGRADED 0 0 0
mirror ONLINE 0 0 0
ad4 ONLINE 0 0 0
ad6 ONLINE 0 0 0
mirror DEGRADED 0 0 0
ad8 OFFLINE 0 0 0
ad10 ONLINE 0 0 0
errors: No known data errors
Power off, replace the faulty disk (i use to put a small label on disks so i know immediately which one is dead).
Restart and “replace” the disk in the ZFS pool:
[root@pr0nserv ~]# zpool replace pr0nserv ad8
[root@pr0nserv ~]# zpool status
pool: pr0nserv
state: DEGRADED
status: One or more devices is currently being resilvered. The pool will
continue to function, possibly in a degraded state.
action: Wait for the resilver to complete.
scrub: resilver in progress for 0h0m, 0.00% done, 5h18m to go
config:
NAME STATE READ WRITE CKSUM
pr0nserv DEGRADED 0 0 0
mirror ONLINE 0 0 0
ad4 ONLINE 0 0 0
ad6 ONLINE 0 0 0
mirror DEGRADED 0 0 0
replacing DEGRADED 0 0 0
ad8/old OFFLINE 0 0 0
ad8 ONLINE 0 0 0 4.62M resilvered
ad10 ONLINE 0 0 0
errors: No known data errors