[Bugs] [Bug 1324004] New: arbiter volume write performance is bad.

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1324004

            Bug ID: 1324004
           Summary: arbiter volume write performance is bad.
           Product: GlusterFS
           Version: mainline
         Component: arbiter
          Assignee: bugs at gluster.org
          Reporter: ravishankar at redhat.com
                CC: bugs at gluster.org



Reported by Robert Rauch @
https://bugzilla.redhat.com/show_bug.cgi?id=1309462#c50 and Russel Purinton @
http://www.spinics.net/lists/gluster-users/msg26311.html

Replica-3:
0:root at vm2 glusterfs$ gluster v create testvol replica 3 
127.0.0.2:/bricks/brick{1..3} force
volume create: testvol: success: please start the volume to access data
0:root at vm2 glusterfs$ gluster v start testvol
volume start: testvol: success
0:root at vm2 glusterfs$ mount -t glusterfs 127.0.0.2:testvol /mnt/fuse_mnt
0:root at vm2 glusterfs$ cd /mnt/fuse_mnt/
0:root at vm2 fuse_mnt$ dd if=/dev/zero of=file bs=1M count=100
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 1.87984 s, 55.8 MB/s


Arbiter:
0:root at vm2 ~$ gluster v create testvol replica 3  arbiter 1
127.0.0.2:/bricks/brick{1..3} force
volume create: testvol: success: please start the volume to access data
0:root at vm2 ~$ gluster v start testvol
volume start: testvol: success
0:root at vm2 ~$ mount -t glusterfs 127.0.0.2:testvol /mnt/fuse_mnt
0:root at vm2 ~$ cd /mnt/fuse_mnt/
0:root at vm2 fuse_mnt$ dd if=/dev/zero of=file bs=1M count=100
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 7.51857 s, 13.9 MB/s

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