RHEL5 VMs can not be edited or migrated in RHEV 3.4

Issue

• Unable to edit a VM, the portal generates the following error:

Cannot edit vm. Selected operation system does not support VirtIO-SCSI

• Unable to migrate a VM, the portal generates the following error:

Cannot migrate vm. Selected operation system does not support VirtIO-SCSI

• We cannot change the VM name or even delete the VM.

• The engine.log file contains;

2014-12-12 12:12:12,796 WARN  [org.ovirt.engine.core.bll.UpdateVmCommand] (ajp-/127.0.0.1:8702-33) [3f0f227b] CanDoAction of action UpdateVm failed. Reasons:VAR__ACTION__UPDATE,VAR__TYPE__VM,ACTION_TYPE_FAILED_ILLEGAL_OS_TYPE_DOES_NOT_SUPPORT_VIRTIO_SCSI

• RHEL5 VMs created in RHEV 3.3 have VirtIO-SCSI enabled and RHEV 3.4 does not support that.

• RHEL5 VMs with VirtIO-SCSI enabled could be edited/modified prior to RHEV 3.4.