Gluster users - Nov 2014 - Unable to add brick from new fresh installed server into upgraded cluster

I have a 2 server CentOS 6 replicated cluster which started out as version
3.3 and has been progressively updated  and is now on version 3.6.1.
Yesterday I added a new freshly installed CentOS 6.6 host and wanted to
convert to replica 3 on one of my volumes, however I was unable to add the
brick as it reported that all the brick hosts had to be at version 03060.
Presumable some minimum compatibility is set on the volume, but I am
struggling to find where.  The info file under
/va/lib/glusterd/vols/volname has op-version=2, client-op-version=2.

Any suggestions?


Thanks, Alastair
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Hello Alastair,

The tip to change the operating version number was given in another mail to the
list within the last few hours:

gluster volume set all cluster.op-version 30600

My own /var/lib/glusterd/glusterd.info files, from a freshly installed 3.6.1,
contain the following line:

operating-version=30600

But interestingly, the log files on my clients contain lines like:
0-vol2-client-0: Using Program GlusterFS 3.3, Num (1298437), Version (330)

Note that I have no idea if changing the op-version will create side-effects
that will put your data at risk. Can anyone from Gluster/RedHat provide some
insight on this topic?

Thanks,
JF


On 25/11/14 20:48, Alastair Neil wrote:
> I have a 2 server CentOS 6 replicated cluster which started out as
> version 3.3 and has been progressively updated  and is now on version
> 3.6.1.  Yesterday I added a new freshly installed CentOS 6.6 host and
> wanted to convert to replica 3 on one of my volumes, however I was
> unable to add the brick as it reported that all the brick hosts had to
> be at version 03060.   Presumable some minimum compatibility is set on
> the volume, but I am struggling to find where.  The info file under
> /va/lib/glusterd/vols/volname has op-version=2, client-op-version=2.
> 
> Any suggestions?
> 
> 
> Thanks, Alastair
> 
> 
> 
> 
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