Description of problem:
Live storage migration fail to complete and leave the disks in locked state

Version-Release number of selected component (if applicable):


How reproducible:
100%

Steps to Reproduce:
1. Run a VM with disks and select a few disks and click on "Move"
2. Select target storage domains and click on "OK"
3.

Actual results:
The action fails leaving the disks locked

Expected results:
The action should complete successfully

Additional info:

2016-11-14 16:36:34,730 INFO  [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (DefaultQuartzScheduler7) [] Correlation ID: 2de307a9, Job ID: a31aee00-d4d7-4ede-b48b-5806647ede3c, Call Stack: null, Custom Event ID: -1, Message: Snapshot 'Auto-generated for Live Storage Migration' creation for VM 'VM1' has been completed.
2016-11-14 16:36:35,784 ERROR [org.ovirt.engine.core.bll.CommandsFactory] (DefaultQuartzScheduler2) [2de307a9] Error in invocating CTOR of command 'LiveMigrateDisk' with parameters 'LiveMigrateDiskParameters:{commandId='22632400-dcc8-4363-9cb9-6b1ca1ec90a4', user='null', commandType='Unknown'}': null
2016-11-14 16:36:35,789 INFO  [org.ovirt.engine.core.bll.SerialChildCommandsExecutionCallback] (DefaultQuartzScheduler2) [2de307a9] Command 'LiveMigrateVmDisks' id: 'afde1665-3ff0-473a-8134-0b91ddda03d8' failed when attempting to perform the next operation, marking as FAILED '[970971de-0e37-4efa-a2dc-48e099d6fb3d]'
2016-11-14 16:36:35,789 INFO  [org.ovirt.engine.core.bll.SerialChildCommandsExecutionCallback] (DefaultQuartzScheduler2) [2de307a9] Command 'LiveMigrateVmDisks' id: 'afde1665-3ff0-473a-8134-0b91ddda03d8' child commands '[970971de-0e37-4efa-a2dc-48e099d6fb3d]' executions were completed, status 'FAILED'