[Linux-cluster] Freeze with cluster-2.03.11

Kadlecsik Jozsef kadlec at mail.kfki.hu
Mon Mar 30 09:20:25 UTC 2009


On Mon, 30 Mar 2009, Steven Whitehouse wrote:

> > We'd need features added to recent 2.6 kernels (like read-only bindmount), 
> > so the natural path was upgrading GFS1. However, as in the present state 
> > our cluster is unstable, either we have to find the culprit or go back to 
> > the proven version (and loosing the required new features).
> Read only bind mounts have not been tested with gfs1 and they might very
> well not work correctly, so be careful. Our general plan is to try and
> introduce new features into GFS2 and to maintain GFS with its existing
> feature set. Thats not to say that there will be no new features in GFS,
> but just that we are trying in general to put the new stuff in GFS2.

We do not need read-only bind mounts in GFS itself but in local 
> Upgrading from GFS1 to GFS2 will always have to involve a shutdown in
> cluster operations since the differing journalling schemes rule out a
> node by node in place upgrade I'm afraid,

That's fully acceptable. I assume there's no problem in running GFS1 and 
GFS2 volumes in parallel?

Best regards,
E-mail : kadlec at mail.kfki.hu, kadlec at blackhole.kfki.hu
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Address: KFKI Research Institute for Particle and Nuclear Physics
         H-1525 Budapest 114, POB. 49, Hungary

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