vmdisk

This hook can add an additional (unaccounted for by the engine) disk to the VM

Supports both raw and qcow2 images syntax:

     vmdisk=/path/to/disk.img:qcow2,/other/disk.img:raw

Download link: http://ovirt.org/releases/nightly/rpm/EL/6/hooks/vdsm-hook-vmdisk-4.10.0-0.442.git6822c4b.el6.noarch.rpm