[Gluster-users] What to do with split-brain on / (root)

Pranith Kumar Karampuri pkarampu at redhat.com
Wed Aug 6 15:11:08 UTC 2014


On 08/05/2014 10:38 AM, Colin Coghill wrote:
>
> Hi,
>
> We have a 2 server replica gluster, about 10TB (5 bricks) on each 
> side. The servers are fairly high-end and are connected via a private 
> ethernet connection, appearing to replicate with each other very quickly.
>
> Running Ubuntu Precise (12.04) and GlusterFS 3.4.1 on the servers.
>
> They're working quite heavily in production and downtime is difficult 
> to arrange.
>
> We've had a lot of trouble with split-brain, where files/dirs on both 
> sides appear identical
> (md5sum, datestamps, etc) but I've fixed most of them by erasing the 
> affected files
> on one side and letting it re-sync.
>
> However, we're left with split brain on '/' and several top level 
> directories.
> I'm uncomfortable erasing that much of one side to solve the problem.
>
> any advice?
Hope this document helps:
https://github.com/gluster/glusterfs/blob/master/doc/split-brain.md

We are going to provide CLI for these issues in 3.6/3.7 versions hopefully.
Pranith
>
>
> - Colin
> -- 
> Colin Coghill
> DevOps Engineer
> Koordinates
> colin.coghill at koordinates.com <mailto:colin.coghill at koordinates.com>
>
>
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> Gluster-users mailing list
> Gluster-users at gluster.org
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