The Add disk UI in the User Portal  does not populate the interface pull-down. Nor will it allow the creation of a new virtual disk as a result. The error states insufficient permissions however the user is assigned PowerUserRole at the cluster level and on the associated storage domain(s).

Engine built from commit: 31cd5339cfda6ad78f5d3a1ff08ad666f734f814

2013-10-08 12:53:15,378 INFO  [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (ajp--127.0.0.1-8702-10) Correlation ID: 567417ad, Job ID: 6f774854-920b-4217-9906-a484841b843a, Call Stack: null, Custom Event ID: -1, Message: VM sdfa was created by ovirttest.
2013-10-08 12:53:15,396 INFO  [org.ovirt.engine.core.bll.AddVmFromScratchCommand] (ajp--127.0.0.1-8702-10) Lock freed to object EngineLock [exclusiveLocks= key: sdfa value: VM_NAME
, sharedLocks= ]
2013-10-08 12:53:15,433 INFO  [org.ovirt.engine.core.bll.MultipleActionsRunner] (ajp--127.0.0.1-8702-10) MultipleActionsRunner of type AddVmInterface invoked with no actions
2013-10-08 12:53:15,445 INFO  [org.ovirt.engine.core.bll.MultipleActionsRunner] (ajp--127.0.0.1-8702-10) MultipleActionsRunner of type UpdateVmInterface invoked with no actions
2013-10-08 12:53:15,459 INFO  [org.ovirt.engine.core.bll.MultipleActionsRunner] (ajp--127.0.0.1-8702-10) MultipleActionsRunner of type RemoveVmInterface invoked with no actions
2013-10-08 12:53:19,540 ERROR [org.ovirt.engine.core.bll.GetVirtioScsiControllersQuery] (ajp--127.0.0.1-8702-10) Query execution failed due to insufficient permissions.
2013-10-08 12:54:29,015 WARN  [org.ovirt.engine.core.bll.AddDiskCommand] (ajp--127.0.0.1-8702-10) CanDoAction of action AddDisk failed. Reasons:VAR__ACTION__ADD,VAR__TYPE__VM_DISK,VALIDATION.DISK_INTERFACE.NOT_NULL
2013-10-08 12:54:34,891 ERROR [org.ovirt.engine.core.bll.GetVirtioScsiControllersQuery] (ajp--127.0.0.1-8702-10) Query execution failed due to insufficient permissions.
2013-10-08 12:56:14,937 ERROR [org.ovirt.engine.core.bll.GetVirtioScsiControllersQuery] (ajp--127.0.0.1-8702-9) Query execution failed due to insufficient permissions.
2013-10-08 12:56:27,095 WARN  [org.ovirt.engine.core.bll.AddDiskCommand] (ajp--127.0.0.1-8702-4) CanDoAction of action AddDisk failed. Reasons:VAR__ACTION__ADD,VAR__TYPE__VM_DISK,VALIDATION.DISK_INTERFACE.NOT_NULL