Op-version is correct with build "glusterfs-3.7.9-1"
#gluster volume get Dis cluster.op-version
Option Value
------ -----
cluster.op-version 30707
Moving to verified state.
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-2016:1240