I've been having problems with my gluster Engine volume recently as well after updating to latest stable 4.3.3. For the past few days I've seen a random brick in the Engine volume go down and I have to force start it to get it working again. Right now I'm seeing that there are unsynced entries and one node is showing transport endpoint not connected, even though peer status if fine and all other volumes are working normally.
I see this sometimes after rebooting a server, and it usually stops happening, generally within a few hours, I’ve never tracked it down further. Don’t know for sure, but I assume it’s related to healing and goes away once everything syncs up.
Occasionally it turns out to be a communications problem between servers (usually an update to something screws up my firewall), so I always check my peer status when I see it and make sure all servers are talking to each other.
> On May 13, 2019, at 4:13 AM, Andreas Elvers <andreas.elvers+ovirtforum@solutions.work> wrote:
>
> I restored my engine to a gluster volume named :/engine on a three node hyperconverged oVirt 4.3.3.1 cluster. Before restoring I was checking the status of the volumes. They were clean. No heal entries. All peers connected. gluster volume status looked good. Then I restored. This went well. The engine is up. But the engine gluster volume shows entries on node02 and node03. The engine was installed to node01. I have to deploy the engine to the other two hosts to reach full HA, but I bet maintenance is not possible until the volume is healed.
>
> I tried "gluster volume heal engine" also with added "full". The heal entries will disappear for a few seconds and then /dom_md/ids will pop up again. The __DIRECT_IO_TEST__ will join later. The split-brain info has no entries. Is this some kind of hidden split brain? Maybe there is data on node01 brick which got not synced to the other two nodes? I can only speculate. Gluster docs say: this should heal. But it doesn't. I have two other volumes. Those are fine. One of them containing 3 VMs that are running. I also tried to shut down the engine, so no-one was using the volume. Then heal. Same effect. Those two files will always show up. But none other. Heal can always be started successfully from any of the participating nodes.
>
> Reset the volume bricks one by one and cross fingers?
>
> [root@node03 ~]# gluster volume heal engine info
> Brick node01.infra.solutions.work:/gluster_bricks/engine/engine
> Status: Connected
> Number of entries: 0
>
> Brick node02.infra.solutions.work:/gluster_bricks/engine/engine
> /9f4d5ae9-e01d-4b73-8b6d-e349279e9782/dom_md/ids
> /__DIRECT_IO_TEST__
> Status: Connected
> Number of entries: 2
>
> Brick node03.infra.solutions.work:/gluster_bricks/engine/engine
> /9f4d5ae9-e01d-4b73-8b6d-e349279e9782/dom_md/ids
> /__DIRECT_IO_TEST__
> Status: Connected
> Number of entries: 2
> _______________________________________________
> Users mailing list -- users@ovirt.org
> To unsubscribe send an email to users-leave@ovirt.org
> Privacy Statement: https://www.ovirt.org/site/privacy-policy/
> oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/
> List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/L3YCRPRAGPUMBZIBFOPT6L4B7H4M6HLS/
_______________________________________________
Users mailing list -- users@ovirt.org
To unsubscribe send an email to users-leave@ovirt.org
Privacy Statement: https://www.ovirt.org/site/privacy-policy/
oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/
List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/6XOCRXRCQOUKE4RVK7PWDZHNU4EUAMQ6/