[Bugs] [Bug 1270668] New: Index entries are not being purged in case of file does not exist

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1270668

            Bug ID: 1270668
           Summary: Index entries are not being purged in case of file
                    does not exist
           Product: GlusterFS
           Version: mainline
         Component: replicate
          Assignee: bugs at gluster.org
          Reporter: aspandey at redhat.com
                CC: bugs at gluster.org, gluster-bugs at redhat.com



Description of problem:
If a file does not exist on a brick but the index entry is present in
XXX/.glusterfs/indices/xattrop, this entry is not getting removed even after 
running index heal.

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

[root at aspandey:/home/blr/aspandey/glusterfs]# glusterfs --version
glusterfs 3.8dev built on Oct 12 2015 10:40:32
Repository revision: git://git.gluster.com/glusterfs.git
Copyright (c) 2006-2013 Red Hat, Inc. <http://www.redhat.com/>
GlusterFS comes with ABSOLUTELY NO WARRANTY.
It is licensed to you under your choice of the GNU Lesser
General Public License, version 3 or any later version (LGPLv3
or later), or the GNU General Public License, version 2 (GPLv2),
in all cases as published by the Free Software Foundation.
[root at aspandey:/home/blr/aspandey/glusterfs]# 


How reproducible:
100%

Steps to Reproduce:
1. Create a replicate volume, mount it and create some files on mount point.
2. add bricks and before executing rebalance, kill one of the new add bricks
3. execute rebalance.
4. add brick again and execute rebalance (some files from written on bricks in
[2] will be rebalanced to bricks added in [4]) 
5. start the volume with force
6. start heal
7. heal info shows nothing to be healed  
8. Look into XXX/.glusterfs/indices/xattrop in one of the brick added in [2].
Index entries would still be present.


Actual results:
Indices are present for the file which does not exist on volume 

Expected results:

No indices should be present.

Additional info:


[root at aspandey:/home/blr/aspandey/glusterfs]# gluster v heal repvol info
Brick aspandey:/brick/gluster/R1
Number of entries: 0

Brick aspandey:/brick/gluster/R2
Number of entries: 0

Brick aspandey:/brick/gluster/R11
Number of entries: 0

Brick aspandey:/brick/gluster/R12
Number of entries: 0

Brick aspandey:/brick/gluster/R111
Number of entries: 0

Brick aspandey:/brick/gluster/R112
Number of entries: 0

[root at aspandey:/home/blr/aspandey/glusterfs]# ll
/brick/gluster/R11/.glusterfs/indices/xattrop/
total 0
----------. 4 root root 0 Oct 12 10:48 26b306f3-7204-461b-9b61-3147651ee181
----------. 4 root root 0 Oct 12 10:48 2e37a37f-ce9f-4ccc-8c9c-fb4eefded44a
----------. 4 root root 0 Oct 12 10:48 2ea426f0-0e7a-43a3-ae1c-b9463be4062e
----------. 4 root root 0 Oct 12 10:48
xattrop-e5af794a-3622-47be-8b9d-65a9f211975d
[root at aspandey:/home/blr/aspandey/glusterfs]# gluster v info

Volume Name: repvol
Type: Distributed-Replicate
Volume ID: e33f7dc2-3a21-4b0f-9965-f039f6dbb003
Status: Started
Number of Bricks: 3 x 2 = 6
Transport-type: tcp
Bricks:
Brick1: aspandey:/brick/gluster/R1
Brick2: aspandey:/brick/gluster/R2
Brick3: aspandey:/brick/gluster/R11
Brick4: aspandey:/brick/gluster/R12
Brick5: aspandey:/brick/gluster/R111
Brick6: aspandey:/brick/gluster/R112
Options Reconfigured:
performance.readdir-ahead: on

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