Hi Jan,

These commands will tell you if FMA faults are logged:

# fmdump
# fmadm faulty

This command will tell you if errors are accumulating on this
disk:

# fmdump -eV | more

Thanks,

Cindy

On 02/01/12 11:20, Jan Hellevik wrote:
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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