[Bugs] [Bug 1175214] [RFE] Rebalance Performance Improvements

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1175214



--- Comment #4 from Susant Kumar Palai <spalai at redhat.com> ---
Ran rebalance with the large data set created by Manoj[comment 3]. I added a
replica pair from server 29 to the existing cluster. Here is the new
configuration.

[root at gprfs029 ~]# gluster v i

Rebal ID: 3

Volume Name: rbperf
Type: Distributed-Replicate
Volume ID: abe337be-5c53-42b3-8de1-c0637341596f
Status: Started
Snap Volume: no
Number of Bricks: 5 x 2 = 10
Transport-type: tcp
Bricks:
Brick1: gprfs029.sbu.lab.eng.bos.redhat.com:/bricks/gprfs029/brick1
Brick2: gprfs029.sbu.lab.eng.bos.redhat.com:/bricks/gprfs029/brick2
Brick3: gprfs030.sbu.lab.eng.bos.redhat.com:/bricks/gprfs030/brick1
Brick4: gprfs030.sbu.lab.eng.bos.redhat.com:/bricks/gprfs030/brick2
Brick5: gprfs031.sbu.lab.eng.bos.redhat.com:/brick/lv_brick01
Brick6: gprfs031.sbu.lab.eng.bos.redhat.com:/brick/lv_brick02
Brick7: gprfs032.sbu.lab.eng.bos.redhat.com:/brick/lv_brick01
Brick8: gprfs032.sbu.lab.eng.bos.redhat.com:/brick/lv_brick02
Brick9: gprfs029.sbu.lab.eng.bos.redhat.com:/bricks/gprfs029/brick3
Brick10: gprfs029.sbu.lab.eng.bos.redhat.com:/bricks/gprfs029/brick4
Options Reconfigured:
performance.readdir-ahead: on
snap-max-hard-limit: 256
snap-max-soft-limit: 90
auto-delete: disable


Here is the rebalance status.
[root at gprfs029 ~]# gluster v rebalance rbperf status
                                    Node Rebalanced-files          size      
scanned      failures       skipped               status   run time in secs
                               ---------      -----------   -----------  
-----------   -----------   -----------         ------------     --------------
                               localhost               82        82.0GB        
 1034             0            46            completed            1316.00
     gprfs030.sbu.lab.eng.bos.redhat.com               65        65.0GB        
 1013             0            27            completed            3060.00
     gprfs031.sbu.lab.eng.bos.redhat.com               61        61.0GB        
  988             0            17            completed            3100.00
     gprfs032.sbu.lab.eng.bos.redhat.com               14        14.0GB        
  961             0            26            completed             792.00
volume rebalance: rbperf: success: 


The rebalance process took around 51 minutes.

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