Comment 5 for bug 1598833

Here's another example for reproducing this manually with a _running_ guest:

1) create a volume -> works
2) attach volume to guest -> works
3) detach volume from guest -> works
4) create snapshot from volume -> works
5) attach volume(!) to guest -> FAIL
6) delete snapshot -> works
7) attach volume to guest -> works(!)

When running this procedure with a stopped guest things work fine, e.g.:

[..]
4) create snapshot from volume -> works
5) attach volume to (shutdown) guest -> works (checked by powering up and looking for the volumes device)