From: Ian Campbell <ijc@hellion.org.uk>
To: Trond Myklebust <trond.myklebust@fys.uio.no>
Cc: John Ronciak <john.ronciak@gmail.com>, Grant Coady <gcoady.lk@gmail.com>,
       linux-kernel@vger.kernel.org, neilb@suse.de, bfields@fieldses.org,
       linux-nfs@vger.kernel.org, Jeff Kirsher <jeffrey.t.kirsher@intel.com>,
       Jesse Brandeburg <jesse.brandeburg@intel.com>,
       Bruce Allan <bruce.w.allan@intel.com>,
       PJ Waskiewicz <peter.p.waskiewicz.jr@intel.com>,
       John Ronciak <john.ronciak@intel.com>,
       e1000-devel@lists.sourceforge.net
In-Reply-To: <1219442213.9097.25.camel@localhost>
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	 <1219087258.7192.19.camel@localhost>
	 <1219400624.18774.67.camel@zakaz.uk.xensource.com>
	 <1219428489.6919.21.camel@localhost>
	 <1219428818.27921.43.camel@localhost.localdomain>
	 <56a8daef0808221233h68853587n6015ca7d809b17e1@mail.gmail.com>
	 <1219435207.27921.51.camel@localhost.localdomain>
	 <1219440202.9097.14.camel@localhost>
	 <1219441041.27921.57.camel@localhost.localdomain>
	 <1219442213.9097.25.camel@localhost>
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Date: Fri, 22 Aug 2008 23:41:43 +0100
Message-Id: <1219444903.27921.65.camel@localhost.localdomain>
Mime-Version: 1.0
Subject: Re: NFS regression? Odd delays and lockups accessing an NFS export.
Sender: linux-kernel-owner@vger.kernel.org
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On Fri, 2008-08-22 at 14:56 -0700, Trond Myklebust wrote:
> On Fri, 2008-08-22 at 22:37 +0100, Ian Campbell wrote:
> > I can ssh to the server fine. The same server also serves my NFS home
> > directory to the box I'm writing this from and I've not seen any troubl=
e
> > with this box at all, it's a 2.6.18-xen box.
>=20
> OK... Are you able to reproduce the problem reliably?

It usually happens in around a day, but I can't make it happen at will
so that I can arrange to be present at the time. It has usually locked
up over night in the past.

> If so, can you provide me with a binary tcpdump or wireshark dump? If
> using tcpdump, then please use something like
>=20
>    tcpdump -w /tmp/dump.out -s 90000 host myserver.foo.bar and port 2049

I'll try leaving this going overnight but using -C and -W to limit the
size to the disk space available.

> Please also try to provide a netstat dump of the current TCP connections
> as soon as the hang occurs:
>=20
>   netstat -t

Will do it ASAP after it happens.

Ian.
--=20
Ian Campbell

revision 1.17.2.7
date: 2001/05/31 21:32:44;  author: branden;  state: Exp;  lines: +1 -1
ARRRRGH!!  GOT THE G** D*** SENSE OF A F******* TEST BACKWARDS!

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