Re: gluster v heal info split-brain doesn't show split-brain

[Игорь Бирюлин <biryulini@xxxxxxxxx>]

Thank you for your reply.

I had setuped two test VM with gluster 3.7.2 on ubuntu trusty and repeated actions:

1. setuped and create gluster share in replicate mode with 2 bricks;

2. mounted share on both servers (like client) by glusterfs;

3. create some files in share;

4. blocked network connection between peer (gluster peer disconnected) by iptables;

5. appended text in the same file in share from both node (file with name 'test');

6. returned network connection bettween peer (removed iptables rule).

7. got split-brain on edited by me file.

I check existence split-brain:
root@dist-gl2:/# gluster volume heal repofiles info
Brick dist-gl1:/brick1/
/test
/ - Is in split-brain

Number of entries: 2

Brick dist-gl2:/brick1/
/ - Is in split-brain

/test
Number of entries: 2

root@dist-gl2:/# gluster volume heal repofiles info split-brain
Brick dist-gl1:/brick1/
/
Number of entries in split-brain: 1

Brick dist-gl2:/brick1/
/
Number of entries in split-brain: 1

root@dist-gl2:/#

Why does split-brain showed for directory (/) only, and why doesn't show for file (/test) where real split-brain?

Addition info:
root@dist-gl2:/# cat /etc/issue
Ubuntu 14.04.1 LTS \n \l

root@dist-gl2:/# dpkg -l | grep gluster
ii  glusterfs-client                  3.7.2-ubuntu1~trusty1         amd64        clustered file-system (client package)
ii  glusterfs-common                  3.7.2-ubuntu1~trusty1         amd64        GlusterFS common libraries and translator modules
ii  glusterfs-server                  3.7.2-ubuntu1~trusty1         amd64        clustered file-system (server package)
root@dist-gl2:/# gluster volume info
 
Volume Name: repofiles
Type: Replicate
Volume ID: 1d5d5d7d-39f2-4011-9fc8-d73c29495e7c
Status: Started
Number of Bricks: 1 x 2 = 2
Transport-type: tcp
Bricks:
Brick1: dist-gl1:/brick1
Brick2: dist-gl2:/brick1
Options Reconfigured:
performance.readdir-ahead: on
server.allow-insecure: on
root@dist-gl2:/#

2015-07-15 14:41 GMT+03:00 Ravishankar N <ravishankar@xxxxxxxxxx>:

This is been fixed in glusterfs 3.7, please see the thread https://www.gluster.org/pipermail/gluster-users/2015-June/022336.html

On 07/15/2015 05:06 PM, Игорь Бирюлин wrote:

Hello,
I have made split brain special for test (file /1 in output).
And check with command:
[14:20:10] root@xxx04:/repo # gluster v heal repofiles info
Brick xxx03:/storage/gluster_brick_repofiles/
/ - Is in split-brain

/1
Number of entries: 2

Brick xxx04:/storage/gluster_brick_repofiles/
/ - Is in split-brain

/1
Number of entries: 2

[14:20:27] root@xxx04:/repo #

But when I try look for files in split-brain by command "gluster v heal repofiles info split-brain", I don't see entries:
[14:20:27] root@xxx04:/repo # gluster v heal repofiles info split-brain
Gathering list of split brain entries on volume repofiles has been successful

Brick xxx03:/storage/gluster_brick_repofiles
Number of entries: 0

Brick xxx04:/storage/gluster_brick_repofiles
Number of entries: 0

[14:20:34] root@xxx04:/repo #

The question is why I can not see files in split-brain by the last command?

Additional info:
[14:20:34] root@xxx04:/repo # cat /etc/issue
Ubuntu 12.04.5 LTS \n \l


[14:31:32] root@xxx04:/repo # dpkg -l | grep gluster
ii  glusterfs-client                     3.6.3-6                           clustered file-system (client package)
ii  glusterfs-common                     3.6.3-6                           GlusterFS common libraries and translator modules
ii  glusterfs-server                     3.6.3-6                           clustered file-system (server package)

[14:31:39] root@xxx04:/repo # gluster volume info
 
 Volume Name: repofiles
 Type: Replicate
 Volume ID: 3d30a803-35b0-46c8-96a6-4ae19e21f25b
 Status: Started
 Number of Bricks: 1 x 2 = 2
 Transport-type: tcp
 Bricks:
 Brick1: xxx03:/storage/gluster_brick_repofiles
 Brick2: xxx04:/storage/gluster_brick_repofiles
 Options Reconfigured:
 server.allow-insecure: on
 
  Volume Name: share
  Type: Replicate
  Volume ID: ecf80f1a-cd26-4c5e-a9a3-71fd8d89cbf8
  Status: Started
  Number of Bricks: 1 x 2 = 2
  Transport-type: tcp
  Bricks:
  Brick1: xxx03:/place/share
  Brick2: xxx04:/place/share
  Options Reconfigured:
  server.allow-insecure: on


  [14:31:48] root@xxx04:/repo #

Best regards,

Igor

_______________________________________________
Gluster-users mailing list
Gluster-users@xxxxxxxxxxx
http://www.gluster.org/mailman/listinfo/gluster-users

_______________________________________________
Gluster-users mailing list
Gluster-users@xxxxxxxxxxx
http://www.gluster.org/mailman/listinfo/gluster-users