[Linux-ha-dev] Re: [Linux-ha-cvs] Linux-HA CVS: membership by gshi from

[Lars Marowsky-Bree]

On 2005-02-03T14:15:37, Alan Robertson <alanr at unix.sh> wrote:

> I believe this code is a bug.
> 
> You should only STONITH if you have quorum.  You should not STONITH to 
> obtain quorum.

With the usual exception of exact 50:50 splits (mostly 1:1), where you
need quorum to arbitate quorum too. Otherwise the 1:1 scenarios won't
work as they used to.

Novell Cluster Services call this "Split Brain Detector", even though I
think it's more resolution than detection. ;-) FailSafe had a similar
special case.

I think we should assume we have quorum if >50% of all nodes, or total
node count == 2, then.


Mit freundlichen Grüßen,
    Lars Marowsky-Brée <lmb at suse.de>

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