Hmm... if you used cns-deploy and experience this problem you should open a different PR against the gluster-block component of the Red Hat Gluster Storage product. I won't be very good at helping solve that one.
If you could clarify at this point: Is this a reproducible issue in cns-deploy that you are experiencing, or is this an issue in a specific installation that needs to be fixed?
as per comment 19 i verified bug https://bugzilla.redhat.com/show_bug.cgi?id=1598322 which is working properly, So marking this as verified.
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/RHEA-2018:2691