Comment 8 for bug 1417288

i can now create snapshots if using --disk-only, but i guess this is an "external" snapshot? which leads to other problems, like not being able to delete it:

>virsh snapshot-create-as orb-template-ubuntu 'test_snapshot_3' 'test snapshot 3'
error: operation failed: Error -22 while writing VM

>virsh snapshot-create-as orb-template-ubuntu 'test_snapshot_3' 'test snapshot 3' --atomic
error: operation failed: Error -22 while writing VM

>virsh snapshot-create-as orb-template-ubuntu 'test_snapshot_3' 'test snapshot 3' --atomic --disk-only
Domain snapshot test_snapshot_3 created

>virsh snapshot-list orb-template-ubuntu
 Name Creation Time State
------------------------------------------------------------
 test_snapshot 2015-09-23 15:07:02 -0400 disk-snapshot
 test_snapshot_2 2015-09-23 15:07:44 -0400 disk-snapshot
 test_snapshot_3 2015-09-23 15:55:18 -0400 disk-snapshot

>virsh snapshot-delete orb-template-ubuntu test_snapshot_3
error: Failed to delete snapshot test_snapshot_3
error: unsupported configuration: deletion of 1 external disk snapshots not supported yet