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SubjectRe: NFS regression? Odd delays and lockups accessing an NFS export.
On Tue, 12 May 2009 13:27:58 -0700
Frank Filz <ffilzlnx@us.ibm.com> wrote:

> On Mon, 2008-08-18 at 14:37 -0500, J. K. Cliburn wrote:
> > Athanasius wrote:
> > > On Mon, Aug 18, 2008 at 12:02:20PM +1000, Grant Coady wrote:
> > >> I've been using NFS here for years, lately there's something odd going on
> > >> since about a month or so. Previously reported last month:
> > >> http://www.gossamer-threads.com/lists/linux/kernel/951419?page=last
[...]
> > I see you're running the atl1 driver on your client. I'm chasing an
> > intermittent bug in that driver that seems to be affected by certain
> > offload parameters. Try disabling TSO and see if things improve.
>
> Was this ever resolved? We're seeing a similar hangup in a 2.6.27
> kernel.

The TSO problem in the atl1 driver was never resolved, and TSO was turned off by default with commit 82c26a9d117f0178b8c1b33429014b6d99c470f6 in the 2.6.27 cycle. It was also added to the -stable tree at 2.6.26.4.

http://lkml.org/lkml/2008/9/3/251

Jay


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