From owner-freebsd-stable@FreeBSD.ORG  Fri Nov 11 23:39:26 2005
Return-Path: <owner-freebsd-stable@FreeBSD.ORG>
X-Original-To: stable@freebsd.org
Delivered-To: freebsd-stable@FreeBSD.ORG
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 30E4616A41F
	for <stable@freebsd.org>; Fri, 11 Nov 2005 23:39:26 +0000 (GMT)
	(envelope-from sean@mcneil.com)
Received: from mail.mcneil.com (mcneil.com [24.199.45.54])
	by mx1.FreeBSD.org (Postfix) with ESMTP id E1AC243D46
	for <stable@freebsd.org>; Fri, 11 Nov 2005 23:39:25 +0000 (GMT)
	(envelope-from sean@mcneil.com)
Received: from localhost (localhost.mcneil.com [127.0.0.1])
	by mail.mcneil.com (Postfix) with ESMTP id 6702BF24A3
	for <stable@freebsd.org>; Fri, 11 Nov 2005 15:39:25 -0800 (PST)
Received: from mail.mcneil.com ([127.0.0.1])
	by localhost (triton.mcneil.com [127.0.0.1]) (amavisd-new, port 10024)
	with ESMTP id 00817-05 for <stable@freebsd.org>;
	Fri, 11 Nov 2005 15:39:24 -0800 (PST)
Received: from mcneil.com (mcneil.com [24.199.45.54])
	by mail.mcneil.com (Postfix) with ESMTP id BCD10F2453
	for <stable@freebsd.org>; Fri, 11 Nov 2005 15:39:24 -0800 (PST)
From: Sean McNeil <sean@mcneil.com>
To: stable@freebsd.org
In-Reply-To: <1131737064.64225.2.camel@triton.mcneil.com>
References: <1131737064.64225.2.camel@triton.mcneil.com>
Content-Type: text/plain
Date: Fri, 11 Nov 2005 15:39:24 -0800
Message-Id: <1131752364.84095.3.camel@triton.mcneil.com>
Mime-Version: 1.0
X-Mailer: Evolution 2.4.1 FreeBSD GNOME Team Port 
Content-Transfer-Encoding: 7bit
X-Virus-Scanned: by amavisd-new at mcneil.com
Cc: 
Subject: Re: 6-STABLE TCP nfs Linux client hangs (UPDATE)
X-BeenThere: freebsd-stable@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Production branch of FreeBSD source code <freebsd-stable.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-stable>, 
	<mailto:freebsd-stable-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-stable>
List-Post: <mailto:freebsd-stable@freebsd.org>
List-Help: <mailto:freebsd-stable-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-stable>,
	<mailto:freebsd-stable-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 11 Nov 2005 23:39:26 -0000

On Fri, 2005-11-11 at 11:24 -0800, Sean McNeil wrote:
> I have a 2x Athlon running with amd64 kernel and I can hang 2 Linux
> clients by attempting to write large amounts of data over TCP nfs.  If I
> set the nfsd to be UDP only, the problem never occurs.
> 
> Please let me know what I can do to help track this problem down.

It appears that the above isn't the case.  I managed to get a failure of
nfs in UDP mode as well.  I got some messages about jumbo frames that
didn't make sense coming from the NIC when that happened and some
corruption of files.  I believe there is an issue with mpsafe on the sk0
nic.

Turning off debug.mpsafenet (i.e. setting to 0) seems to have resolved
the issue for me at the moment.

Sean