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Bug 839595

Summary: Implement a server side quorum in glusterd
Product: [Community] GlusterFS Reporter: Pranith Kumar K <pkarampu>
Component: glusterdAssignee: Pranith Kumar K <pkarampu>
Severity: high Docs Contact:
Priority: unspecified    
Version: pre-releaseCC: acanan, gluster-bugs, jdarcy, josh, sasundar, vbellur
Target Milestone: ---   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Fixed In Version: glusterfs-3.4.0 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
: 840122 (view as bug list) Environment:
Last Closed: 2013-07-24 13:22:54 EDT Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---
Bug Depends On:    
Bug Blocks: 840122, 840818, 858428, 874018, 895528    

Description Pranith Kumar K 2012-07-12 08:02:40 EDT
Description of problem:
When the Glusterd is connected to less than half of the number of members in cluster, glusterd will kill the local bricks of the volumes on which the server side quorum is enabled. 

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

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Comment 1 Jeff Darcy 2012-10-31 17:12:44 EDT
Normally a new feature would have low severity, but the lack of this affects so many users that I'm bumping it up by two.
Comment 2 Vijay Bellur 2012-11-24 02:13:51 EST
CHANGE: http://review.gluster.org/4162 (libglusterfs: Implement float percentage) merged in master by Vijay Bellur (vbellur@redhat.com)
Comment 3 Vijay Bellur 2012-11-24 02:15:02 EST
CHANGE: http://review.gluster.org/3811 (mgmt/glusterd: Implementation of server-side quorum) merged in master by Vijay Bellur (vbellur@redhat.com)
Comment 4 Vijay Bellur 2012-11-24 02:27:50 EST
CHANGE: http://review.gluster.org/4228 (tests: Add volume utils in a new file) merged in master by Vijay Bellur (vbellur@redhat.com)
Comment 5 Vijay Bellur 2012-11-24 02:28:07 EST
CHANGE: http://review.gluster.org/4229 (tests: Add volume set tests for quorum) merged in master by Vijay Bellur (vbellur@redhat.com)
Comment 6 Vijay Bellur 2012-12-11 20:17:32 EST
CHANGE: http://review.gluster.org/4291 (glusterd: Set op-version for quorum options) merged in master by Anand Avati (avati@redhat.com)
Comment 7 Aharon Canan 2013-12-23 10:45:27 EST

did someone verify that it really helps with the split-brains?

Comment 8 SATHEESARAN 2013-12-24 07:48:18 EST
Ah(In reply to Aharon Canan from comment #7)
> hi
> did someone verify that it really helps with the split-brains?
> thanks.

Yes, it does so.
I tested that with Red Hat Storage.
You can read more about this feature here : http://www.gluster.org/community/documentation/index.php/Features/Server-quorum