I've clearly seen this is a pretty common issue with many different methods for cleaning up dead clusters. I'm having issues with unknown VM's not allowing my host into Maintenance Mode. Version: ovirt-release36-3.6.7-1.noarch Situation: Another site repurposed a host entirely without properly cleaning it's status in my Engine. No option to delete host. I've attempted the "Confirm Host is Rebooted" -> Maintenance Mode. However the error is: Cannot Switch the following Hosts to Maintenance mode: ... One or more running VMs are indicated as non-migratable. The status of all the listed VM's is "UNKNOWN" w/ "?" next to them. If I look at the settings for these VM's they already have "Do not allow migration" checked. Also I'm unable to modify the VM since the Host doesn't exist. Can't just delete the Domain because the Host exists. Can't delete Storage because host is not in Maintenance Mode. Can't set Maintenance Mode because VM's can't migrate. At this point all I want to do is upgrade to latest ovirt, however I need to get this orphaned Domain out of my single node cluster, which still runs a ~10 VM's hosted on Gluster Storage. Thoughts on whether I could just backup these VM's, re-install ovirt fresh then import the VM's? Thanks, Travis Ross W 512.231.4235 M 512.547.9437 [cid:image003.png@01D55D96.2A607620] KLA-Tencor is now KLA! Learn more at kla.com <https://www.kla.com/>