[Lustre-discuss] lustre and latest errata kernel

[Brian J. Murrell]

On Sun, 2008-08-03 at 13:44 +0300, Dimitris Zilaskos wrote:
> 	Hi,
> 
> We are investigating the possibility of deploying lustre in our clusters.
> We are using RHEL4. An important issue we are facing is support for the 
> latest errata kernels. For example at the moment it is possible to download
> lustre-patched 2.6.9-67.0.7 kernel, while the latest errata is 2.6.9-78.

We strive to maintain currency with vendor errata kernels but a couple
of factors impede us in being as timely as I'm sure you wish we would
be.

The first is that we don't get an errata kernel any quicker than you do.
RH for example don't make any early releases for anyone, so we can only
start integration and testing when the kernel is released to the general
public.  This process can take a couple of weeks for us to do a full QA
array of testing, which I'm sure you can appreciate the result of --
knowing that any given release has been through our rigorous testing in
order to minimize as much as we can the unfortunate event of upgrade
failures.

The second impediment is timing.  Sometimes an errata kernel is released
too late to make it for the feature freeze for an upcoming release even
though that release could be a couple of weeks (remember, QA) away.
This gives the appearance that we take a long time to get an errata
release out since it won't come out now until our next regularly
scheduled release.

Sometimes we will do a point release for nothing else than to support a
very important errata kernel but that doesn't happen entirely often.

b.

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