Gluster users - Jul 2016 - split-brain recovery automation, any plans?

Hello!


We just got split-brain during update to 3.7.13 ;-)

This was our first time we hit this, and we found that it is not easy to 
follow and change xattrs metadata.
So, could you tell me, are there any plans to simplify this?
Let's say, add tool to choose preferred copy (brick) to heal others from 
and, thus, avoid all this direct xattr manipulations?

Thank you!

btw, 3.7.13 works ok with qemu gfapi on centos7 :-)

On 07/11/2016 01:24 PM, Dmitry Melekhov wrote:
> Hello!
>
>
> We just got split-brain during update to 3.7.13 ;-)
>
> This was our first time we hit this, and we found that it is not easy 
> to follow and change xattrs metadata.
> So, could you tell me, are there any plans to simplify this?
> Let's say, add tool to choose preferred copy (brick) to heal others 
> from and, thus, avoid all this direct xattr manipulations?
Commands are already available to resolve split-brains from the gluster 
command line or from the fuse mount too. 
https://github.com/gluster/glusterfs-specs/blob/master/done/Features/heal-info-and-split-brain-resolution.md
is a bit dated but has some examples.

-Ravi
>
> Thank you!
>
> btw, 3.7.13 works ok with qemu gfapi on centos7 :-)
>
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2016-07-11 9:54 GMT+02:00 Dmitry Melekhov <dm at
belkam.com>:
> We just got split-brain during update to 3.7.13 ;-)
This is an interesting point.
Could you please tell me which replica count did you set ?

With replica "3" split brain should not occurs, right ?
I'm planning a new cluster and I would like to be protected against
split brains.