Patch was abandoned by Dan Kenigsberg (danken(a)redhat.com) because: Igor convinced me that
we have no real benefit from re-introducing this API. I've mentioned that upstream:
https://fedorahosted.org/pipermail/vdsm-devel/2011-December/000348.html
You can review this change at:
http://gerrit.usersys.redhat.com/1013