[ovirt-users] gluster setup in ovirt

Hi, I have 3 machines imported into ovirt 4.0.4 just to do storage. I have no storage setup. I am a bit confused, can I add new storage from scratch via ovirt? ie picking mount points (I have /gv1 so set on each) or do I create the gluster replicated setup manually on each of the three nodes first? and import "ready made"?