Just for reference in case anyone else comes across this, I opted to take the path of
using GlusterFS in place of the NFS storage server that I've got to avoid having to
make changes to the NFS server.
The glusterfs was setup on the same node, which is actually my preferred way to go for
this.
Anyway, with the switch to gluster I'm up and running! Very excited to start playing
with oVirt!
Thanks for the responses here to help me get a better understanding of how this stuff
works!