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<div class="moz-cite-prefix">On 12/24/2015 11:26 AM, Sahina Bose
wrote:<br>
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<div class="moz-cite-prefix">On 12/24/2015 08:24 AM, Will Dennis
wrote:<br>
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<p class="MsoNormal">Hi all,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have a three-node hyper-converged oVirt
datacenter running; now I need to add my first storage
domain. I had prepped for this before installing oVirt by
creating two distributed Gluster volumes with 3x replicas
(one for the hosted engine, one for VM storage) –<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">[root@ovirt-node-01 ~]# gluster volume
info | grep -e "Name" -e "Type" -e "Number"<o:p></o:p></p>
<p class="MsoNormal">Volume Name: engine<o:p></o:p></p>
<p class="MsoNormal">Type: Distributed-Replicate<o:p></o:p></p>
<p class="MsoNormal">Number of Bricks: 2 x 3 = 6<o:p></o:p></p>
<p class="MsoNormal">Volume Name: vmdata<o:p></o:p></p>
<p class="MsoNormal">Type: Distributed-Replicate<o:p></o:p></p>
<p class="MsoNormal">Number of Bricks: 2 x 3 = 6</p>
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Do you have 2 bricks on each node for the engine volume?<br>
<br>
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<p class="MsoNormal"><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Now I’d like to use the “vmdata” volume
for my storage domain. When in webadmin I select “New
Domain” I get a dialog that lets me select GlusterFS as the
storage type, but then requires a “Use host:” setting, and a
path. Is it possible for me to select one of my oVirt hosts
(they all have the ‘vmdata’ volume), and then use
“localhost:/vmdata” for the path? Or will this not work?</p>
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Use host -> use any of the hosts.<br>
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path -> <host1>:/data<br>
Enter mount options ->
backup-volfile-servers=<host2>:<host3><br>
<br>
<br>
In 3.6, I think the mount options are automatically appended with
backup-volfile-servers. But providing this info here will also
work. The bakup-volfile-servers help in accessing the gluster
volume when the host1 that was used to mount the volume goes down,
and any of the other hosts needs to remount the gluster volume<br>
<br>
<br>
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<p class="MsoNormal"><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I know this isn’t officially supported
yet, but if I can get it to work somehow, that’d be great
:) It’s a non-production (PoC) setup, so the cost of
failure should be low... That said, I don’t want to trash my
rig and have to redo the whole thing all over ;)</p>
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Which version of glusterfs are you using?<br>
<br>
If you're trying this out for a POC, we recommend that you enable
sharding on the gluster volumes (available from glusterfs 3.7.6 -
<a class="moz-txt-link-freetext" href="http://gluster.readthedocs.org/en/release-3.7.0/Features/shard/">http://gluster.readthedocs.org/en/release-3.7.0/Features/shard/</a>).
This will ensure that when self-heal happens on the gluster volume,
the process does not hog CPU and completes relatively faster.<br>
<br>
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<blockquote cite="mid:567B8923.8080509@redhat.com" type="cite">
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<p class="MsoNormal"><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks,<o:p></o:p></p>
<p class="MsoNormal">Will<o:p></o:p></p>
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