Hi Vinicius, i'm sorry, I thought I had replied already.
I'm mostly using IPoIB, but gluster is using some over RDMA. I'm using it a few different ways,
5 IB nodes, all have dual port ConnectX-3 cards @ 40GB
2 nodes are running windows, one port on each is used for a sync channel for starwind Vsan to mirror ~20tb of date. The second ports are using for iSCS sharing SMB fiile shares for other IB nodes.
3 nides are running CentOS 7 and ovirt. One of the ports on each are used for gluster synchronzaton, gluster is set to use both IPoIB & RDMA. Then the other ports are using for migratons, iSCSI sharing, and a backup admin channel.