In my opionion the main problem in configuration iscsi and multipath is that the ovirt developers try to start everything automaticaly during installation, and then during start services like vdsmd.

But during installation process adminstrator shoud choose the right multipath WWID identifier only.

And administrator should be responsible for setting multipath and iSCSI properly.
Otherwise ovirt installator does everything automaticaly in the universal way which is weak due to so many storage types.

Howgh :)