From what I have experienced so far (which, admittedly, is only in a
testing environment), stable release of oVirt seems to be fine. The
only SRPM I have had to re-compile is qemu-kvm (CentOS 6.5); I just set
"rhev=1" so I could get live snapshot working, until there is a qemu-kvm
version for RHEL/CentOS that natively supports live snapshotting.
(qemu-kvm for RHEL/CentOS is an older version than currently available)
-Alan