Hello, I think I0ve found another issue: I have the three node that are under heavy test and, after having problem with gluster I configured them to use with iSCSI (without multipath now) so I configured via the gui a new iscsi data domain using a single target under a single VLAN. I suspect there is an issue reporting the correct volume in my case: I try to explain. This are the scsi devices in the three nodes: [root@ovirt-node2 ~]# lsscsi [4:0:0:0] disk ATA ST4000NM000A-2HZ TN02 /dev/sda [5:0:0:0] disk ATA Samsung SSD 870 2B6Q /dev/sdb [6:0:0:0] disk IBM 2145 0000 /dev/sdc [N:0:1:1] disk Force MP600__1 /dev/nvme0n1 [root@ovirt-node3 ~]# lsscsi [0:0:0:0] disk ATA Samsung SSD 870 2B6Q /dev/sda [6:0:0:0] disk IBM 2145 0000 /dev/sdb [N:0:0:1] disk WD Blue SN570 500GB__1 /dev/nvme0n1 [root@ovirt-node4 ~]# lsscsi [3:0:0:0] disk ATA ST4000NM000A-2HZ TN02 /dev/sda [4:0:0:0] disk ATA KINGSTON SA400S3 1103 /dev/sdb [5:0:0:0] disk IBM 2145 0000 /dev/sdc So you see, the SCSI target (IBM 2145) are mapped as /dev/sdc in node2 and node4, but in node3 is mapped as /dev/sdb. In vdsm log of node3 I can find: 2022-09-21 15:53:57,831+0000 INFO (monitor/aac7917) [storage.storagedomaincache] Looking up domain aac79175-ab2b-4b5b-a6e4-9feef9ce17ab (sdc:171) 2022-09-21 15:53:57,899+0000 INFO (monitor/aac7917) [storage.storagedomaincache] Looking up domain aac79175-ab2b-4b5b-a6e4-9feef9ce17ab: 0.07 seconds (utils:390) 2022-09-21 15:53:57,899+0000 ERROR (monitor/aac7917) [storage.monitor] Setting up monitor for aac79175-ab2b-4b5b-a6e4-9feef9ce17ab failed (monitor:363) Traceback (most recent call last): File "/usr/lib/python3.6/site-packages/vdsm/storage/monitor.py", line 360, in _setupLoop self._setupMonitor() File "/usr/lib/python3.6/site-packages/vdsm/storage/monitor.py", line 382, in _setupMonitor self._setupDomain() File "/usr/lib/python3.6/site-packages/vdsm/utils.py", line 153, in wrapper value = meth(self, *a, **kw) File "/usr/lib/python3.6/site-packages/vdsm/storage/monitor.py", line 598, in _setupDomain domain = sdCache.produce(self.sdUUID) File "/usr/lib/python3.6/site-packages/vdsm/storage/sdc.py", line 115, in produce domain.getRealDomain() File "/usr/lib/python3.6/site-packages/vdsm/storage/sdc.py", line 51, in getRealDomain return self._cache._realProduce(self._sdUUID) File "/usr/lib/python3.6/site-packages/vdsm/storage/sdc.py", line 139, in _realProduce domain = self._findDomain(sdUUID) File "/usr/lib/python3.6/site-packages/vdsm/storage/sdc.py", line 156, in _findDomain return findMethod(sdUUID) File "/usr/lib/python3.6/site-packages/vdsm/storage/sdc.py", line 186, in _findUnfetchedDomain raise se.StorageDomainDoesNotExist(sdUUID) vdsm.storage.exception.StorageDomainDoesNotExist: Storage domain does not exist: ('aac79175-ab2b-4b5b-a6e4-9feef9ce17ab',) So the node is kicked out of the ovirt cluster telling that it's not possible to connect to iSCSI domain.....