On Mon, Mar 1, 2021, 15:20 <souvaliotima...@mail.com> wrote: > Hello again, > > I am back with a brief description of the situation I am in, and questions > about the recovery. > > oVirt environment: 4.3.5.2 Hyperconverged > GlusterFS: Replica 2 + Arbiter 1 > GlusterFS volumes: data, engine, vmstore > > The current situation is the following: > > - The Cluster is in Global Maintenance. > > - The volume engine is up with comment (in the Web GUI) : Up, unsynched > entries, needs healing. > > - The VM HostedEngine is paused due to a storage I/O error (Web GUI) while > the output of virsh list --all command shows that the HostedEngine is > running. > > I tried to issue the gluster heal command (gluster volume heal engine) but > nothing changed. > > I have the following questions: > > 1. Should I restart the glusterd service? Where from? Is it enough if the > glusterd is restarted on one host or should it be restarted on the other > two as well? > It sounds as a gluster split brain. I would start from there. Can you check status by listing split brain entries?
> > 2. Should the node that was NonResponsive and came back, be rebooted or > not? It seems alright now and in good health. > > 3. Should the HostedEngine be restored with engine-backup or is it not > necessary? > > 4. Could the loss of the DNS server for the oVirt hosts lead to an > unresponsive host? > The nsswitch file on the ovirt hosts and engine, has the DNS defined as: > hosts: files dns myhostname > If you have opted for dns liveliness checks it could be. > > 5. How can we recover/rectify the situation above? > I would start checking for gluster split brains and ensure that all hosts have connectivity in the storage domain net (ping, jumbo frames if enabled). 99% of my similar issues have been caused from gluster split. The fact that the engine is shown as paused and that you can still access web ui makes me think you have a split brain issue > > Thanks for your help, > Maria Souvalioti > _______________________________________________ > Users mailing list -- users@ovirt.org > To unsubscribe send an email to users-le...@ovirt.org > Privacy Statement: https://www.ovirt.org/privacy-policy.html > oVirt Code of Conduct: > https://www.ovirt.org/community/about/community-guidelines/ > List Archives: > https://lists.ovirt.org/archives/list/users@ovirt.org/message/GO6S6GXRJWYZN5NZ5IFTNQ6SGNEB75WQ/ >
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