vdsm v4.12.0 for engine 3.3 has some unsatisfied dependencies on el6 hosts:

--> Finished Dependency Resolution
Error: Package: vdsm-hook-sriov-4.12.0-10.el6.noarch (el6v-test)
           Requires: libvirt-daemon-driver-nodedev
Error: Package: vdsm-4.12.0-10.el6.x86_64 (el6v-test)
           Requires: mom >= 0.3.2-3
           Removing: mom-0.3.0-1.el6.noarch (@epel)
               mom = 0.3.0-1.el6
           Updated By: mom-0.3.2-2.el6.noarch (el6v-test)
               mom = 0.3.2-2.el6

mom can be built from http://gerrit.ovirt.org/gitweb?p=mom.git

but "libvirt-daemon-driver-nodedev" would require a newer libvirt.
 (https://apps.fedoraproject.org/packages/libvirt-daemon-driver-nodedev)

- DHC