I suspect that something is wrong with one of my disks.
This is the output from iostat:
extended device statistics ---- errors ---
r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b s/w h/w trn tot
device
2.0 18.9 38.1 160.9 0.0 0.1 0.1 3.2 0 6 0 0 0 0
c5d0
2.7 18.8 59.3 160.9 0.0 0.1 0.2 3.2 0 6 0 0 0 0
c5d1
0.0 36.8 1.1 3593.7 0.0 0.1 0.0 2.9 0 8 0 0 0 0
c6t66d0
0.0 38.2 0.0 3693.7 0.0 0.2 0.0 4.6 0 12 0 0 0 0
c6t70d0
0.0 38.1 0.0 3693.7 0.0 0.1 0.0 2.4 0 5 0 0 0 0
c6t74d0
0.0 42.0 0.0 4155.4 0.0 0.0 0.0 0.6 0 2 0 0 0 0
c6t76d0
0.0 36.9 0.0 3593.7 0.0 0.1 0.0 1.4 0 3 0 0 0 0
c6t78d0
0.0 41.7 0.0 4155.4 0.0 0.0 0.0 1.2 0 4 0 0 0 0
c6t80d0
The disk in question is c6t70d0 - it shows consistently higher %b and asvc_t
than the other disks in the pool. The output is from a 'zfs receive' after
about 3 hours.
The two c5dx disks are the 'rpool' mirror, the others belong to the 'backup'
pool.
admin@master:~# zpool status
pool: backup
state: ONLINE
scan: scrub repaired 0 in 5h7m with 0 errors on Tue Jan 31 04:55:31 2012
config:
NAME STATE READ WRITE CKSUM
backup ONLINE 0 0 0
mirror-0 ONLINE 0 0 0
c6t78d0 ONLINE 0 0 0
c6t66d0 ONLINE 0 0 0
mirror-1 ONLINE 0 0 0
c6t70d0 ONLINE 0 0 0
c6t74d0 ONLINE 0 0 0
mirror-2 ONLINE 0 0 0
c6t76d0 ONLINE 0 0 0
c6t80d0 ONLINE 0 0 0
errors: No known data errors
admin@master:~# zpool list
NAME SIZE ALLOC FREE CAP DEDUP HEALTH ALTROOT
backup 4.53T 1.37T 3.16T 30% 1.00x ONLINE -
admin@master:~# uname -a
SunOS master 5.11 oi_148 i86pc i386 i86pc
Should I be worried? And what other commands can I use to investigate further?
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