[Bugs] [Bug 1264520] New: volume rebalance start is successfull but status returns failed status

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1264520

            Bug ID: 1264520
           Summary: volume rebalance start is successfull but status
                    returns failed status
           Product: GlusterFS
           Version: 3.6.2
         Component: distribute
          Severity: medium
          Assignee: bugs at gluster.org
          Reporter: shelsucker at hotmail.com
                CC: bugs at gluster.org, gluster-bugs at redhat.com



Created attachment 1075005
  --> https://bugzilla.redhat.com/attachment.cgi?id=1075005&action=edit
data-rebalance.vol file

Description of problem:

Upgrading a distributed volume from 6 to 8 bricks.
xfs disks mounted to /gluster/bricks/brick*
added brick 7 and 8 without any problems

Version-Release number of selected component (if applicable):
3.6.2 Gluster packages all around

How reproducible:
everytime I try a rebalance with or without fix-layout option

Steps to Reproduce:
1. gluster volume rebalance data start
2. gluster volume rebalance data status
3. cat /var/lib/glusterd/vols/data/data-rebalance.vol to see error status

Actual results:
Failed/non-started rebalance

/var/lib/glusterd/vols/data/data-rebalance.vol contains:
"volume data-client-0
    type protocol/client
    option send-gids true
    option frame-timeout 45
    option transport-type tcp
    option remote-subvolume /gluster/bricks/brick1/data
    option remote-host gls-safran1
    option ping-timeout 42
end-volume"

for 6 first bricks then 
volume data-client-1 for brick 7
volume data-client-2 for brick 8


Expected results:
Rebalance between the 8 bricks

Additional info:
gluster volume info:

Volume Name: data
Type: Distribute
Volume ID: df8943d0-0e40-4ba9-87f4-08bd5f962f9d
Status: Started
Number of Bricks: 8
Transport-type: tcp
Bricks:
Brick1: gls-safran1:/gluster/bricks/brick1/data
Brick2: gls-safran1:/gluster/bricks/brick2/data
Brick3: gls-safran1:/gluster/bricks/brick3/data
Brick4: gls-safran1:/gluster/bricks/brick4/data
Brick5: gls-safran1:/gluster/bricks/brick5/data
Brick6: gls-safran1:/gluster/bricks/brick6/data
Brick7: gls-safran1:/gluster/bricks/brick7/data
Brick8: gls-safran1:/gluster/bricks/brick8/data
Options Reconfigured:
performance.stat-prefetch: off
performance.cache-refresh-timeout: 30
network.frame-timeout: 45
performance.io-cache: off
performance.quick-read: off
diagnostics.count-fop-hits: on
diagnostics.latency-measurement: on
diagnostics.brick-log-level: INFO
nfs.disable: on
diagnostics.client-log-level: INFO
server.allow-insecure: on
performance.cache-size: 128MB
performance.io-thread-count: 16
performance.write-behind-window-size: 4MB
performance.flush-behind: off
performance.read-ahead: on





First bug submit, if any errors or stuff please forgive me !

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