*** IF THIS PASSES QE ***
It is now supported to run the High Availability Add-On for Red Hat Enterprise Linux 5 within guests managed by Red Hat Enterprise Virtualization. There are two caveats:
1) The guests must use SCSI-based fencing in conjunction with iSCSI storage; no other storage or fencing model is supported at this time.
2) The cluster configuration must use broadcast (instead of multicast) for network transport. This is generally not recommended, but is required when running on Red Hat Enterprise Linux 5 hypervisors or RHEV-H nodes based on RHEL 5.