Date: Mon, 01 Mar 2010 12:52:32 +0100 From: Willem Jan Withagen <wjw@digiware.nl> To: =?ISO-8859-1?Q?Gerrit_K=FChn?= <gerrit@pmp.uni-hannover.de> Cc: stable@freebsd.org, freebsd-fs@freebsd.org, "Robert N. M. Watson" <rwatson@freebsd.org>, =?ISO-8859-1?Q?Eirik_=D8verby?= <ltning@anduin.net>, Daniel Braniss <danny@cs.huji.ac.il>, Jeremy Chadwick <freebsd@jdc.parodius.com> Subject: Re: mbuf leakage with nfs Message-ID: <4B8BAA80.7060401@digiware.nl> In-Reply-To: <20100228185546.f9fefa97.gerrit@pmp.uni-hannover.de> References: <20100226174021.8feadad9.gerrit@pmp.uni-hannover.de> <E1Nl6VA-000557-D9@kabab.cs.huji.ac.il> <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> <BD8AC9F6-DF96-41F9-8E92-48A4E5606DC7@anduin.net> <4B89943C.70704@digiware.nl> <20100227220310.GA65110@icarus.home.lan> <E1Nlhzr-0004ci-3W@kabab.cs.huji.ac.il> <F794BAF9-4ADC-48F8-ACC3-C441EF77A8F2@freebsd.org> <20100228185546.f9fefa97.gerrit@pmp.uni-hannover.de>
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On 28-2-2010 18:55, Gerrit Kühn wrote: > On Sun, 28 Feb 2010 12:21:28 +0000 "Robert N. M. Watson" > <rwatson@freebsd.org> 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? I'm off 'till thursday. At which time I'm willing to run more tests. Got plenty of boxes here. Both FreeBSD and Linux. And otherwise will boot more in VirtualBox. --WjW
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