Oracle VM will do a hot clone on FC repos but there is a limit in FC that ties repos to server pools. Don't ask me why. It doesn't make sense to me at all.
Either way, there is no hot migration feature that will allow you to move a VM disk to another repo without shutting down the VM guest using the disk. There are no replay features with Oracle VM like there are with VMware. However, everyone that I know that uses the VMware features..... says that half the time it doesn't work. Something always ends up being left out of the target. Especially if it the disk is under heavy utilization.