Once an Oracle Server VM is associated to a Oracle VM Manger (OVMM). It needs to be cleaned before assigning it to another OVMM. Here is how:
#Stop ovs-agent service ovs-agent stop #Delete /etc/ovs-agent/db on the server(s) rm -rf /etc/ovs-agent/db #Empty the /etc/ocfs2/cluster.conf (ignore if you don't have it) /dev/null> /etc/ocfs2/cluster.conf #Start the ovs-agent service ovs-agent start
More details are here.
Oui