Description of problem: RHGS 3.1 nodes cannot be managed using RHEV-M 4.0. Reason: RHEV-M 4.0 dropped the support for cluster levels 3.5 and less and it will only support cluster levels 3.6 and above. But vdsm package available in RHGS 3.1.3 will support only 3.5 cluster level. As a result, RHGS 3.1.3 nodes can't be managed using RHEV-M 4.0 Fix: We should rebase the vdsm packages in RHEGS with RHEV to support 3.6 cluster level.
Doc text looks good. One small correction, Instead of saying 'The version of vdsm previously available in Red Hat Gluster Storage 3.1 had a cluster compatibility version of 3.5' we could say that 'The version of vdsm previously available in Red Hat Gluster Storage 3.1 can only support cluster compatibility versions up to 3.5'.
Tested with RHV 4.0.2-6 and RHGS 3.1.3 installed with vdsm-4.17.33-1.el7rhgs I could able to add the RHGS node to 3.6 cluster
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://rhn.redhat.com/errata/RHBA-2016-1651.html