This is a follow-up...
After a huge pain in the rear upgrading from a
2.6.11++ to a 2.6.23-rc3 (I'll give the powerpc
folks a 'piece' of my mind on that front) - the
NFS hang problem that I was experiencing on the
older kernel is NOT occurring on this new version.
Now what do I do?
Is the net/sunrpc net/nfsx pieces isolated enough
from the rest of the kernel that I could fork-lift
it back to the 2.6.11 (or is that really a lost cause).
Thanks for any/all feedback on this front!
-----Original Message-----
From: J. Bruce Fields [mailto:[email protected]]
Sent: Wednesday, August 22, 2007 4:27 PM
To: Morrison, Tom
Cc: [email protected]; [email protected]; Rushton,
Matt
Subject: Re: NFS/RPC Hangs after updating time...
On Wed, Aug 22, 2007 at 02:37:22PM -0400, Morrison, Tom wrote:
> I am working with a 2.6.11++ kernel on an embedded
> server platform that is NFS serving Linux rootfs
> for other embedded NFS Client boards.
>
> Everything works fine when the system time on the
> server board is relatively synchronized with the real-time.
>
> It hangs after attempting to update the time from a
> nonsensical time (e.g.: 2 months ago) - the most significant
> part of it is that it only hangs IFF it has started
> serving its NFS client boards before I attempt to
> update the time.
>
>
> The most significant output (when turning on
> RPC debugging) is from:
>
> linux/net/sunrpc/cache.c (cache_check) - line 90:
>
> >> Want update, refage=1800, age=4288285
>
> It continually loops through this method - and the cache
> never gets updated...even thought with some additional
> sleuthing (aka: additional debug printks - it thinks
> that there is an cache update pending).
Can you reproduce the problem with the current kernel? (Say 2.6.22 or
later?)
--b.
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