From owner-freebsd-fs@FreeBSD.ORG Sun Feb 28 17:56:29 2010 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 5C887106566C; Sun, 28 Feb 2010 17:56:29 +0000 (UTC) (envelope-from gerrit@pmp.uni-hannover.de) Received: from mrelay1.uni-hannover.de (mrelay1.uni-hannover.de [130.75.2.106]) by mx1.freebsd.org (Postfix) with ESMTP id D1C198FC2E; Sun, 28 Feb 2010 17:56:28 +0000 (UTC) Received: from www.pmp.uni-hannover.de (www.pmp.uni-hannover.de [130.75.117.2]) by mrelay1.uni-hannover.de (8.14.2/8.14.2) with ESMTP id o1SHtlWD029132; Sun, 28 Feb 2010 18:55:51 +0100 Received: from pmp.uni-hannover.de (theq.pmp.uni-hannover.de [130.75.117.4]) by www.pmp.uni-hannover.de (Postfix) with SMTP id AE49524; Sun, 28 Feb 2010 18:55:47 +0100 (CET) Date: Sun, 28 Feb 2010 18:55:46 +0100 From: Gerrit =?ISO-8859-1?Q?K=FChn?= To: "Robert N. M. Watson" Message-Id: <20100228185546.f9fefa97.gerrit@pmp.uni-hannover.de> In-Reply-To: References: <20100226174021.8feadad9.gerrit@pmp.uni-hannover.de> <20100226224320.8c4259bf.gerrit@pmp.uni-hannover.de> <4B884757.9040001@digiware.nl> <20100227080220.ac6a2e4d.gerrit@pmp.uni-hannover.de> <4B892918.4080701@digiware.nl> <20100227202105.f31cbef7.gerrit@pmp.uni-hannover.de> <20100227193819.GA60576@icarus.home.lan> <4B89943C.70704@digiware.nl> <20100227220310.GA65110@icarus.home.lan> Organization: Albert-Einstein-Institut (MPI =?ISO-8859-1?Q?f=FCr?= Gravitationsphysik & IGP =?ISO-8859-1?Q?Universit=E4t?= Hannover) X-Mailer: Sylpheed 2.4.2 (GTK+ 2.10.12; i386-portbld-freebsd6.1) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-PMX-Version: 5.5.9.388399, Antispam-Engine: 2.7.2.376379, Antispam-Data: 2010.2.28.174226 Cc: stable@freebsd.org, freebsd-fs@freebsd.org, Willem Jan Withagen , Eirik =?ISO-8859-1?Q?=D8verby?= , Daniel Braniss , Jeremy Chadwick Subject: Re: mbuf leakage with nfs X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 28 Feb 2010 17:56:29 -0000 On Sun, 28 Feb 2010 12:21:28 +0000 "Robert N. M. Watson" wrote about Re: mbuf leakage with nfs/zfs? : RNMW> It's almost certainly one or a small number of very specific RPCs RNMW> that are triggering it -- maybe OpenBSD does an extra lookup, or RNMW> stat, or something, on a name that may not exist anymore, or does it RNMW> sooner than the other clients. Hard to say, other than to wave hands RNMW> at the possibilities. RNMW> RNMW> And it may well be we're looking at two bugs: Danny may see one bug, RNMW> perhaps triggered by a race condition, but it may be different from RNMW> the OpenBSD client-triggered bug (to be clear: it's definitely a RNMW> FreeBSD bug, although we might only see it when an OpenBSD client is RNMW> used because perhaps OpenBSD also has a bug or feature). In my case it is the Linux client causing the problems (cannot tell yet if it is only with udp, but I would think so). If I understand Daniel correctly his latest testes were performed with FreeBSD client and udp. So it may very well be a generel issue with udp?! Would this help narrowing down the problem? cu Gerrit