[Linux-cluster] qdiskd, multiple master, updates?

Lon Hohberger lhh at redhat.com
Fri Mar 30 16:38:28 UTC 2007


On Wed, Mar 28, 2007 at 04:54:19PM +0100, Frederik Ferner wrote:
> Hi,
> 
> I noticed that there seems to be a fix for my original problem with 
> multiple masters for qdiskd in 
> https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=220211.

> I assume the fix is going to be in RHEL4U5, correct?

Yes.  It's fixed two ways:

* Add timing increases so that a node can't promote -> bid in the same
cycle, or bid and attain master faster than it can declare another node
online.

* Add resolution in the case that, despite our best efforts,
multi-master occurs *anyway* - due to, perhaps, slow I/O on one node but
fast I/O on another (an unlikely case, but no doubt possible).


> Could somebody give me an estimate when we can expect that to be available?

I think it should be beta soon, and when it does go beta, it should
appear on RHN.

> Lon: Do the test rpms at http://people.redhat.com/lhh/packages.html 
> include these fixes? Which rpms do I need to test it? This time I might 
> actually get a chance to test.

The most recent fixes are not included.  Would you like me to build a
new one?

-- 
Lon Hohberger - Software Engineer - Red Hat, Inc.




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