I have a question, Does openstack support FC SAN storage? I have deployed openstack with ceph but first time got this requirement that a customer has SAN storage because they were using VMware but now move to openstack. 

How does openstack talk to FC SAN and what about VM migration etc? Do I need to mount the LUN disk on each computer and point nova to the LUN disk? 

Or I have to create some kind of shared file system on top of the LUN and expose that to nova/cinder. Can someone explain the entire workflow?