REVIEW: http://review.gluster.org/11800 (tiering: Error message change for detach-tier non tier volume) posted (#1) for review on release-3.7 by hari gowtham (email@example.com)
This bug is getting closed because a release has been made available that should address the reported issue. In case the problem is still not fixed with glusterfs-3.7.4, please open a new bug report.
glusterfs-3.7.4 has been announced on the Gluster mailinglists , packages for several distributions should become available in the near future. Keep an eye on the Gluster Users mailinglist  and the update infrastructure for your distribution.