Hi, I'm updating ovirt to 4.2.6.4-1.el7 Engine is updated Compute nodes are updated Storage nodes are not yet updated because ovirt 4.2.6.4-1.el7 depends on gluster 3.12 while now I have gluster 3.10. Compatibility Versions: Compute datacenter 4.2 Storage 4.1 (because I don't have yet updated the storage cluster) so Data Centers is still 4.1 I was about to upgrade the storage nodes when I noticed that /var/log/ovirt-engine/engine.log is flooded with errors like: 2018-10-25 19:36:17,164+02 ERROR [org.ovirt.engine.core.vdsbroker.gluster.GetGlusterLocalLogicalVolumeListVDSCommand] (DefaultQuartzScheduler2) [55e89794] Command 'GetGlusterLocalLogicalVolumeListVDSCommand(HostName = s23, VdsIdVDSCommandParametersBase:{hostId='84a33357-1d04-44db-b0e3-4638ebc39d6c'})' execution failed: null 6 errors (one for each storage server) every 6 seconds. How could I fix them? Can I continue to upgrade the storage nodes? Best regards, -- Marco Crociani