Hi!
My home server had some disk outages due to flaky cabling and whatnot, and
started resilvering to a spare disk. During this another disk or two
dropped, and were reinserted into the array. So no devices were actually
lost, they just were intermittently away for a while each.
The situation is currently as follows:
pool: tank
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: resilver in progress for 5h33m, 22.47% done, 19h10m to go
config:
NAME STATE READ WRITE CKSUM
tank ONLINE 0 0 0
raidz1-0 ONLINE 0 0 0
c11t1d0p0 ONLINE 0 0 0
c11t2d0 ONLINE 0 0 5
c11t6d0p0 ONLINE 0 0 0
spare-3 ONLINE 0 0 0
c11t3d0p0 ONLINE 0 0 0 106M
resilvered
c9d1 ONLINE 0 0 0 104G
resilvered
c11t4d0p0 ONLINE 0 0 0
c11t0d0p0 ONLINE 0 0 0
c11t5d0p0 ONLINE 0 0 0
c11t7d0p0 ONLINE 0 0 0 93.6G
resilvered
raidz1-2 ONLINE 0 0 0
c6t2d0 ONLINE 0 0 0
c6t3d0 ONLINE 0 0 0
c6t4d0 ONLINE 0 0 0 2.50K
resilvered
c6t5d0 ONLINE 0 0 0
c6t6d0 ONLINE 0 0 0
c6t7d0 ONLINE 0 0 0
c6t1d0 ONLINE 0 0 1
logs
/dev/zvol/dsk/rpool/log ONLINE 0 0 0
cache
c6t0d0p0 ONLINE 0 0 0
spares
c9d1 INUSE currently in use
errors: No known data errors
And this has been going on for a week now, always restarting when it should
complete.
The questions in my mind atm:
1. How can i determine the cause for each resilver? Is there a log?
2. Why does it resilver the same data over and over, and not just the
changed bits?
3. Can i force remove c9d1 as it is no longer needed but c11t3 can be
resilvered instead?
I'm running opensolaris 134, but the event originally happened on 111b. I
upgraded and tried quiescing snapshots and IO, none of which helped.
I've already ordered some new hardware to recreate this entire array as
raidz2 among other things, but there's about a week of time when I can run
debuggers and traces if instructed to.
- Tuomas
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