[Gluster-devel] Failover test early success (WAS: 1.3.8pre5 glusterfsd WARNING message)

[Brandon Lamb]

On Wed, Apr 9, 2008 at 7:43 AM, Daniel Maher <dma+gluster at witbe.net> wrote:
> On Wed, 9 Apr 2008 18:50:31 +0530 "Krishna Srinivas"
> <krishna at zresearch.com> wrote:
>
> > OK, we are trying to reproduce the setup and fix the problem...
> > btw, can you without unify and see if failover happens cleanly.
>
> > Correct the wiki needs to be changed. I am CC'ing its author Paul
> > England -> <pengland (at) wxc.co.nz>
>
> I removed the Unify block from the server config on both server nodes,
> then attempted the same failover test again - this time, it worked !
> The remaining functional node (dfsC) continued to serve the data, and
> the client (dfsA) continued to access the mountpoint as if nothing had
> changed.
>
> While dfsD was still down, i edited a text file in the mountpoint.  The
> changes were available immediately on dfsC, as well as the other client
> (dfsB).  I then plugged dfsD back into the storage network, and cat'd
> the text file from dfsA, which triggered the self-heal.  The file
> changes were replicated to dfsD, which appeared to rejoin the cluster
> with no ill effects.
>
> This is, clearly, good news. :)  It would appear that the culprit all
> along was the errant "Unify" block in the config file - this
> should /really/ be fixed on the wiki, as i am surely not the only
> person to have followed that example.
>
> I will now proceed to re-run all of my benchmark and I/O stress testing
> tests against the cluster - but this time, i will randomly disconnect
> and re-connect dfsD.  Of course, i'll let the list know about the
> results of this round of testing.
>
> Thank you all, as always, for your attention in this matter.  Your help
> and comments have all been highly informative and greatly appreciated.
>
>
> --
> Daniel Maher <dma AT witbe.net>
>
>
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Could you post your new configs on the pastbin or whatever? I am
planning on attempting to setup a 2 server glusterfs afr thing again.

=)