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SubjectRe: [2.6 patch] let 4KSTACKS depend on EXPERIMENTAL and XFS on 4KSTACKS
On Thu, Jul 29, 2004 at 12:09:29PM -0400, Zwane Mwaikambo wrote:
> On Thu, 29 Jul 2004, Mika Bostrom wrote:
> > Now, the reason this can't be any kind of bugreport is clear:
> > 1) kernel is tainted
> > 2) VMWare's modules are not yet updated to cope with 2.6.7 kernel
> >
> > So until VMWare updates their product, I consider this a bug in their
> > modules. When they do, I intend to test 4k stacks again. If the hangs
> > continue, then I shall see with their support whether it can be tracked
> > to their code or not.
> >
> > But at least at the moment if you wish to use VMWare and XFS, using 4k
> > stacks is, in my experience, asking for trouble.
> Given that XFS and 4k stacks has known issues perhaps it isn't a fault of
> VMWare. I've been using VMWare 4 with 4K stacks running linux, netbsd and
> win2k on a system with a 30day uptime, i'm using ext3 on 2.6.7-rc3-mm2.

Quite true, and a good point. However, this is one case that can be
reproduced - not systematically, but with certainty - and which displays
a clear difference between 4k and 8k stacks. Enabling noisy debugs and
tagging on a serial console might catch something.

My co-worker uses a FC2 stock kernel and I remember someone from RH
(Ingo Molnar?) saying that those are currently built with 4k stacks. He
has had no such troubles, but then, he isn't using XFS.

I'm merely providing this as an additional info for those who assume
that VMWare knows what they are doing and wish to start debugging the
combination sooner rather than later. (Even if 'later' proves to
eliminate some dead-end test-case scenarios.) Nathan Scott explicitly
requested for information on troublesome setups, so one could say I'm
humouring him and granting a wish, of a sort :)

Mika Boström +358-40-525-7347 \-/ "World peace will be achieved X when the last man has killed
Security freak, and proud of it. /-\ the second-to-last." -anon?
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