[Bugs] [Bug 1271947] New: 'ls' on client mount lists varying number of files while promotion/demotion

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1271947

            Bug ID: 1271947
           Summary: 'ls' on client mount lists varying number of files
                    while promotion/demotion
           Product: GlusterFS
           Version: 3.7.0
         Component: tiering
          Severity: high
          Assignee: bugs at gluster.org
          Reporter: byarlaga at redhat.com
        QA Contact: bugs at gluster.org
                CC: bugs at gluster.org



Description of problem:
=======================

This is on NFS mount. Created 6x2 dist-rep volume and attached a rep-2 tier.
Created 5000 files and stopped access from client side. While the
promotions/demotions are happening, listing the files from client mount and
every time it shows different number. 

[root at rhs-client17 5000]# ls file.* | wc -l
4997
[root at rhs-client17 5000]# ls file.* | wc -l
5000
[root at rhs-client17 5000]# ls file.* | wc -l
4995
[root at rhs-client17 5000]# ls file.* | wc -l
4999
[root at rhs-client17 5000]# ls file.* | wc -l
5001
[root at rhs-client17 5000]# ls file.* | wc -l
4997
[root at rhs-client17 5000]# ls file.* | wc -l
4980
[root at rhs-client17 5000]# ls file.* | wc -l
5000
[root at rhs-client17 5000]# ls file.* | wc -l
4992
[root at rhs-client17 5000]# ls file.* | wc -l
4999

Version-Release number of selected component (if applicable):
=============================================================
[root at transformers ~]# gluster --version
glusterfs 3.7.5 built on Oct 12 2015 01:12:54
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 transformers ~]# rpm -qa |grep glusterfs-server
glusterfs-server-3.7.5-0.18.git2def6bb.el7.centos.x86_64

How reproducible:
=================
100%

Steps to Reproduce:
===================
As in description.


Actual results:
===============
Varying number of files are listed from client


Expected results:
=================
Number of files created = listing same number


Additional info:
===============
sosreports will be copied to rhsqe.

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