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<div class="moz-cite-prefix">Am 09.12.2015 um 14:39 schrieb Lindsay
Mathieson:<br>
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<blockquote cite="mid:56682EFC.5070708@gmail.com" type="cite"><br>
Udo, it occurs to me that if your VM's were running on #2 & #3
and you live migrated them to #1 prior to rebooting #2/3, then you
would indeed rapidly get progressive VM corruption.<br>
<br>
However it wouldn't be due to the heal process, but rather the
live migration with "performance.stat-prefetch" on. This always
leads to qcow2 files becoming corrupted and unusable.</blockquote>
<br>
Nope. All VMs were running on #1, no exception.<br>
Nodes #2 and #3 never had a VM running on them, so they were
pratically idle since their installation.<br>
<br>
Basically I set up node #1, including all VMs. <br>
Then I've installed nodes #2 and #3, configured Proxmox and Gluster
cluster and then waited quite some time until Gluster had synced up
nodes #2 and #3 (healing).<br>
From then on, I've rebooted nodes 2 & 3, but in theory these
nodes never had to do any writes to the Gluster volume at all.<br>
<br>
If you're interested, you can read about my upgrade strategy in this
Proxmox forum post:
<a class="moz-txt-link-freetext" href="http://forum.proxmox.com/threads/24990-Upgrade-3-4-HA-cluster-to-4-0-via-reinstallation-with-minimal-downtime?p=125040#post125040">http://forum.proxmox.com/threads/24990-Upgrade-3-4-HA-cluster-to-4-0-via-reinstallation-with-minimal-downtime?p=125040#post125040</a><br>
<br>
Also, It seems rather strange to me that pratically all ~15 VMs (!)
suffered from data corruption. It's like if Gluster considered node
#2 or #3 to be ahead and it "healed" in the wrong direction. I don't
know..<br>
<br>
BTW, once I understood what was going on, <i>with the problematic
"healing" still in progress</i>, I was able to overwrite the bad
images (still active on #1) by using standard Proxmox backup-restore
and Gluster handled it correctly. <br>
<br>
<br>
Anway, I really love the simplicity of Gluster (setting up and
maintaining a cluster is extremely easy), but these healing issues
are causing some headache to me... ;-)<br>
<br>
Udo<br>
<br>
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