[Bugs] [Bug 1211570] New: Data Tiering:UI:when a user looks for detach-tier help, instead command seems to be getting executed

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1211570

            Bug ID: 1211570
           Summary: Data Tiering:UI:when a user looks for detach-tier
                    help, instead command seems to be getting executed
           Product: GlusterFS
           Version: mainline
         Component: tiering
          Severity: medium
          Assignee: bugs at gluster.org
          Reporter: nchilaka at redhat.com
        QA Contact: bugs at gluster.org
                CC: bugs at gluster.org



Description of problem:
======================
When a user wants to see detach-tier command help, instead of showing the usage
or how to execute, the command seems to be executing

Eg:
[root at yarrow ~]# gluster v detach-tier
Volume detach-tier failed


It should rather behave like how it is for a attach-tier

[root at yarrow ~]# gluster v attach-tier
Usage: volume attach-tier <VOLNAME> [<replica COUNT>] <NEW-BRICK>...



Version-Release number of selected component (if applicable):
============================================================
[root at yarrow ~]# gluster --version
glusterfs 3.7dev built on Apr  8 2015 17:57:45
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 yarrow ~]# rpm -qa|grep gluster
glusterfs-cli-3.7dev-0.994.gitf522001.el6.x86_64
glusterfs-server-3.7dev-0.994.gitf522001.el6.x86_64
glusterfs-libs-3.7dev-0.994.gitf522001.el6.x86_64
glusterfs-fuse-3.7dev-0.994.gitf522001.el6.x86_64
glusterfs-3.7dev-0.994.gitf522001.el6.x86_64
glusterfs-api-3.7dev-0.994.gitf522001.el6.x86_64



How reproducible:
=================
always and easily


Steps to Reproduce:
==================
1.just issue a "Gluster v detach-tier" command and it will say detach-tier
failed rather than showing the usage.

Expected results:
================
Show the usage as below :
[root at yarrow ~]#gluster v detach-tier
Usage:volume detach-tier <VOLNAME> - detach tier from volume <VOLNAME>

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