With python3-psycopg2-2.8.6-3 on the hosted engine VM I can successfully add a Managed Block Storage domain.

Changes needed for Ceph to ultimately work from a reboot: OSDs arent't auto activated.

This needs event_activation = 0 in lvm.conf and vgimportdevices with the VG-name.

event_activation because (non-boot) LVs arent't auto activated on startup, and vgimportdevices to ultimately find PVs to be scanned for LVM.

Installation, and adding Block Storage Domain: Checked. Works.

Unfortunately I stumbled across this issue - I cannot copy a disk to Managed Block Storage from the NFS storage domain.

Attached is engine log and vdsm stack trace from node.