Previously, attaching an iSCSI disk to a running virtual machine failed with the following error: "VolumeError: Bad volume specification". The logs reported that the LUN existed on the storage server adn the storage server was connected.
vmHotplugDisk now adds a hot-plugged iSCSI disk successfully.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
http://rhn.redhat.com/errata/RHBA-2014-0504.html