1:19pm, Richard Elling wrote:
The other thing that's weird is the writes. I am seeing writes in that
3.5MB/sec range during the resilver, *and* I was seeing the same thing
during the dd.
This is from the resilver, but again, the dd was similar. c7d0 is the
device in question:
r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b device
0.0 238.0 0.0 476.0 0.0 1.0 0.0 4.1 0 99 c12d1
30.8 37.8 3302.4 3407.2 14.1 2.0 206.0 29.2 100 100 c7d0
This is the bottleneck. 29.2 ms average service time is slow.
As you can see, this causes a backup in the queue, which is
seeing an average service time of 206 ms.
The problem could be the disk itself or anything in the path
to that disk, including software. But first, look for hardware
issues via
iostat -E
fmadm faulty
fmdump -eV
I don't see anything in the output of these commands except for the ZFS
errors from when I was trying to get the disk online and resilvered.
I estimate another 10-15 hours before this disk is finished resilvering
and the zpool is OK again. At that time, I'm going to switch some hardware
out (I've got a newer and higher-end LSI card that I hadn't used before
because it's PCI-X, and won't fit on my current motherboard.)
I'll report back what I get with it tomorrow or the next day, depending on
the timing on the resilver.
Paul Archer
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