Hi Sahina, I have checked the vdsm.log of the host and I can see the following: StorageDomainDoesNotExist: Storage domain does not exist: (u'62bfe528-cd5c-4b6c-808a-b097fef76629',) raise se.StorageDomainDoesNotExist(sdUUID) StorageDomainDoesNotExist: Storage domain does not exist: (u'8c2df9c6-b505-4499-abb9-0d15db80f33e',) raise se.StorageDomainDoesNotExist(sdUUID) StorageDomainDoesNotExist: Storage domain does not exist: (u'5d9f7d05-1fcc-4f99-9470-4e57cd15f128',) raise se.StorageDomainDoesNotExist(sdUUID) StorageDomainDoesNotExist: Storage domain does not exist: (u'fe24d88e-6acf-42d7-a857-eaf1f8deb24a',) StorageDomainDoesNotExist: Storage domain does not exist: (u'5d9f7d05-1fcc-4f99-9470-4e57cd15f128',) 2019-10-21 15:03:45,742-0400 ERROR (monitor/fe24d88) [storage.Monitor] Error checking domain fe24d88e-6acf-42d7-a857-eaf1f8deb24a (monitor:425) Traceback (most recent call last): File "/usr/lib/python2.7/site-packages/vdsm/storage/monitor.py", line 406, in _checkDomainStatus self.domain.selftest() File "/usr/lib/python2.7/site-packages/vdsm/storage/sdc.py", line 48, in __getattr__ return getattr(self.getRealDomain(), attrName) File "/usr/lib/python2.7/site-packages/vdsm/storage/sdc.py", line 51, in getRealDomain return self._cache._realProduce(self._sdUUID) File "/usr/lib/python2.7/site-packages/vdsm/storage/sdc.py", line 134, in _realProduce domain = self._findDomain(sdUUID) File "/usr/lib/python2.7/site-packages/vdsm/storage/sdc.py", line 151, in _findDomain return findMethod(sdUUID) File "/usr/lib/python2.7/site-packages/vdsm/storage/glusterSD.py", line 62, in findDomain return GlusterStorageDomain(GlusterStorageDomain.findDomainPath(sdUUID)) File "/usr/lib/python2.7/site-packages/vdsm/storage/glusterSD.py", line 58, in findDomainPath raise se.StorageDomainDoesNotExist(sdUUID) Is there a way to fix this? Also, when I try to reinstall one of the hosts (6 node cluster) it reinstalls just fine (except for host1) but does not deploy the engine capabilities to it. thoughts? thanks, Adrian