Dear oVirt users
I've been having several problems with my oVirt nodes utilising GlusterFS
after simulating a power loss.
Our testing setup for oVirt consists of 3 nodes, 2 with GlusterFS storage
and 1 just for computing. Everything seems to be setup correct and was
working correctly. Then after simulating a power loss the master storage
goes down, and therefore the VMs and data center go down as well.
I checked the GlusterFS configuration and it seems to be correct (see
attachment). I checked the oVirt configuration and it seems to be
correct (see attachment). I tried putting several Nodes in Maintenace
several times, even putting in maintenance and reinstalling them. Only when
putting the nodes in maintenance (and choosing to stop the GlusterFS
service) triggers Contending on the other Nodes. Only then there is a
chance that a Node goes from Contending to SPM, which does not always
happen. After trying this several times I got a main Node to become SPM,
but the master storage remains down. When I select the master storage, go
in the Data center, select the data center and click Activate, then both
the master storage and the data center go in the state Locked for a few
seconds and then Inactive again.
Then I upgraded to oVirt 4 (oVirt Engine Version: 4.0.0.6-1.el7.centos) and
tried everything again, resulting in the same result.
I searched online and found this mailing list which is very similar:
http://lists.ovirt.org/pipermail/users/2014-August/026905.html .
Unfortunately the solution was not posted/mailed. I also found this:
https://www.mail-archive.com/users@ovirt.org/msg08105.html suggesting the
kernel version is not correct, but I am unsure how to check this.
In the attachment I added relevant logs:
- GlusterFS service on both main nodes
- /var/log/vdsm/vdsm.log , /var/log/vdsm/supervdsm.log , /var/log/messages
, /var/log/sanlock.log , /var/log/ovirt-engine/engine.log-20160725.gz ,
/var/log/ovirt-engine/engine.log of the oVirt engine
as attachments (I clicked on Activate on the data center at 9:45:30 am
GMT). It can be possible that I need to send different engine logs, please
tell me if necessary. Any help would be highly appreciated.
Kind regards
Robin Vanderveken
--
Robin Vanderveken
DLT Technologies
Tel. +352 691 412 922
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