It looks like we are experiencing a bug in the version of glusterfs
included with ovirt 4.2.3.  It looks like glusterfs 3.12.x has an issue
where it consumes large amounts of ram which has caused our HV report
storage errors and pause VMs.

https://bugzilla.redhat.com/show_bug.cgi?id=1496379

Is there a safe way to get glusterfs-fuse v3.13.x installed with ovirt
4.2.3 or do we have to live with this issue until future updates to
ovirt/glusterfs are released?

$ ssh hv1.domain.com "sudo grep glusterfs
/var/log/messages-* | grep -i kill "
/var/log/messages-20180610:Jun  6 13:49:54 hv1 kernel: Out of memory:
Kill process 15353 (glusterfs) score 630 or sacrifice child
/var/log/messages-20180610:Jun  6 13:49:54 hv1 kernel: Killed process
15353 (glusterfs) total-vm:33800604kB, anon-rss:31896632kB,
file-rss:840kB, shmem-rss:0kB
/var/log/messages-20180617:Jun 17 00:24:16 hv1 kernel: Out of memory:
Kill process 4072 (glusterfs) score 678 or sacrifice child
/var/log/messages-20180617:Jun 17 00:24:16 hv1 kernel: Killed process
4072 (glusterfs) total-vm:36159900kB, anon-rss:34338508kB,
file-rss:888kB, shmem-rss:0kB


We see this same issue occur on all hv in our cluster.

Edward Clay
Systems Administrator
The Hut Group<http://www.thehutgroup.com/>

Tel:
Email: edward.clay@uk2group.com<mailto:edward.clay@uk2group.com>

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