This bug will be cloned to 6.5.z, and its flag is rhel-6.6.0, so change it back to 'ON_QA', we need to test it on rhevh6.6 build.
Verified this bug on rhev-hypervisor6-6.6-20141008.0.iso and ovirt-node-3.1.0-0.22.20141010git96b7ca3.el6 The data partition size is the disk free size as default now.
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. https://rhn.redhat.com/errata/RHEA-2015-0160.html