[Gluster-users] iowait issues

Lindsay Mathieson lindsay.mathieson at gmail.com
Mon Nov 3 05:41:59 UTC 2014

Using glusterfs (2 nodes, one disk each, replicated) to serve up my
kvm disk images. Wehn 4+ vm's are running, I'm seeing iowait upto 25%,
which is causing problems.

Oddly my nas, which has crappy network performance compared to the
gluster cluster doesn't display this problem, but it does use a RAID10

Would my iowait problems because by the gluster network replication or
by the single disks (WD Red 3TB).

If the latter, would adding a ssd cache help? something else?



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