On 14.07.21 13:06, Matthias Petermann wrote:
Next, I will try to take the wd2 (dk2) component offline.
...which I just had to do sooner than I had planned because my I/O came to a complete standstill. The result is very positive - I/O is running again at almost full speed, and the use of redundancy through ZFS does not seem to be as significant as I had feared when a disk fails. I think I will now order a replacement disk and try my hand at reconstruction.
```
saturn$ doas zpool status
pool: tank
state: ONLINE
scan: none requested
config:
NAME STATE READ WRITE CKSUM
tank ONLINE 0 0 0
raidz2-0 ONLINE 0 0 0
dk0 ONLINE 0 0 0
dk1 ONLINE 0 0 0
dk2 ONLINE 0 0 0
dk3 ONLINE 0 0 0
errors: No known data errors
saturn$ doas dkctl wd2 listwedges
/dev/rwd2: 1 wedge:
dk2: zfs2, 5860528128 blocks at 4096, type:
saturn$ doas zpool offline tank dk2
saturn$ doas zpool status
pool: tank
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'.
scan: none requested
config:
NAME STATE READ WRITE CKSUM
tank DEGRADED 0 0 0
raidz2-0 DEGRADED 0 0 0
dk0 ONLINE 0 0 0
dk1 ONLINE 0 0 0
12938104637987333436 OFFLINE 0 0 0 was /dev/dk2
dk3 ONLINE 0 0 0
errors: No known data errors
```
Matthias
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