The version of rtslib-fb that is distributed with RHEL does not include the necessary support for TCMU and ALUA, which will be required for the RBD-backed iSCSI implementation.
Note: Gluster has a similar request in BZ1384603
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2017:1497