[Bugs] [Bug 1263177] New: Data Tieirng:Change error message as detach-tier error message throws as "remove-brick"

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1263177

            Bug ID: 1263177
           Summary: Data Tieirng:Change error message as detach-tier error
                    message throws as "remove-brick"
           Product: GlusterFS
           Version: mainline
         Component: tiering
          Keywords: Triaged
          Severity: low
          Priority: urgent
          Assignee: bugs at gluster.org
          Reporter: hgowtham at redhat.com
        QA Contact: bugs at gluster.org
                CC: bugs at gluster.org, nchilaka at redhat.com,
                    rkavunga at redhat.com, vagarwal at redhat.com
        Depends On: 1258244
            Blocks: 1260923



+++ This bug was initially created as a clone of Bug #1258244 +++

Description of problem:
=======================
when you try to detach a tier in a fail case, say when volume is offline, it
talks about remove-brick as below:

volume detach-tier start: failed: Volume testme needs to be started before
remove-brick (you can use 'force' or 'commit' to override this behavior)

Instead it should tell about "detach-tier"


Version-Release number of selected component (if applicable):



Version-Release number of selected component (if applicable):
==========================================================
[root at nag-manual-node1 ~]# gluster --version
glusterfs 3.7.3 built on Aug 27 2015 01:23:05
Repository revision: git://git.gluster.com/glusterfs.git
Copyright (c) 2006-2011 Gluster Inc. <http://www.gluster.com>
GlusterFS comes with ABSOLUTELY NO WARRANTY.
You may redistribute copies of GlusterFS under the terms of the GNU General
Public License.
[root at nag-manual-node1 ~]# rpm -qa|grep gluster
glusterfs-libs-3.7.3-0.82.git6c4096f.el6.x86_64
glusterfs-fuse-3.7.3-0.82.git6c4096f.el6.x86_64
glusterfs-server-3.7.3-0.82.git6c4096f.el6.x86_64
glusterfs-3.7.3-0.82.git6c4096f.el6.x86_64
glusterfs-api-3.7.3-0.82.git6c4096f.el6.x86_64
glusterfs-cli-3.7.3-0.82.git6c4096f.el6.x86_64
python-gluster-3.7.3-0.82.git6c4096f.el6.noarch


Steps to Reproduce:
=====================
1.offline a tier volume
2.issue a detach-tier start, it throws wrong error telling about remove-brick
instead of detach-tier


Referenced Bugs:

https://bugzilla.redhat.com/show_bug.cgi?id=1258244
[Bug 1258244] Data Tieirng:Change error message as detach-tier error
message throws as "remove-brick"
https://bugzilla.redhat.com/show_bug.cgi?id=1260923
[Bug 1260923] Tracker for tiering in 3.1.2
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