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SubjectRe: Broken NFS (perhaps Cache invalidation bug ?)
I should have added the kernel: 2.6.9-22.0.2.ELsmp #1 SMP with 
nfs-utils-1.0.6-65.EL4


On Mon, 6 Feb 2006, L. D. Marks wrote:

> I have a problem which appears to be very similar to a cache invalidation bug
> previously reported:
> http://www.ussg.iu.edu/hypermail/linux/kernel/0510.1/0582.html
>
> With a conventional nfs mount (not automount), c0-0 a client node, running on
> the nfs server:
>
> echo 10 > Probe
> ssh -x c0-0 cat Probe
> echo 11 > Probe
> ssh -x c0-0 cat Probe
>
> Will give, most times, 10 & 10 rather than 10 & 11.
>
> I've tried a wide range of things (including consulting local experts), so
> far nothing. I'm not a kernel developer, so please be gentle. This problem
> has occurred ever since we moved to the 4.X releases of rocks
> (http://www.rocksclusters.org), X=0 or 1 although it's hidden by their
> default use of automounting and it's taken some time to reduce it to
> something simple.
>
> -----------------------------------------------
> Laurence Marks
> Department of Materials Science and Engineering
> MSE Rm 2036 Cook Hall
> 2220 N Campus Drive
> Northwestern University
> Evanston, IL 60201, USA
> Tel: (847) 491-3996 Fax: (847) 491-7820
> email: L-marks at northwestern dot edu
> http://www.numis.northwestern.edu
> -----------------------------------------------
>
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Note: if you have an old email address for me, please note that "nwu" has
been changed to "northwestern".
-----------------------------------------------
Laurence Marks
Department of Materials Science and Engineering
MSE Rm 2036 Cook Hall
2220 N Campus Drive
Northwestern University
Evanston, IL 60201, USA
Tel: (847) 491-3996 Fax: (847) 491-7820
email: L-marks at northwestern dot edu
http://www.numis.northwestern.edu
-----------------------------------------------

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