From owner-freebsd-stable@FreeBSD.ORG Fri Feb 6 07:43:35 2009 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 4140E1065672 for ; Fri, 6 Feb 2009 07:43:35 +0000 (UTC) (envelope-from danny@cs.huji.ac.il) Received: from kabab.cs.huji.ac.il (kabab.cs.huji.ac.il [132.65.16.84]) by mx1.freebsd.org (Postfix) with ESMTP id E377F8FC18 for ; Fri, 6 Feb 2009 07:43:34 +0000 (UTC) (envelope-from danny@cs.huji.ac.il) Received: from pampa.cs.huji.ac.il ([132.65.80.32]) by kabab.cs.huji.ac.il with esmtp id 1LVLN7-000Njo-3B; Fri, 06 Feb 2009 09:43:33 +0200 X-Mailer: exmh version 2.7.2 01/07/2005 with nmh-1.2 To: Peter Jeremy In-reply-to: <20090206071231.GC1449@server.vk2pj.dyndns.org> References: <20090206071231.GC1449@server.vk2pj.dyndns.org> Comments: In-reply-to Peter Jeremy message dated "Fri, 06 Feb 2009 18:12:31 +1100." Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Fri, 06 Feb 2009 09:43:33 +0200 From: Danny Braniss Message-ID: Cc: freebsd-stable@freebsd.org Subject: Re: impossible packet length ... X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 06 Feb 2009 07:43:35 -0000 > On 2009-Feb-06 08:32:27 +0200, Danny Braniss wrote: > >on 2 different servers, running 7.1-stable + zfs, I get this > >error rather frequently: > > > >Feb 5 17:01:03 warhol-00 kernel: impossible packet length (543383918) fro= > m=20 > >nfs server sunfire:/dist > So many quetsions :-) > I gather warhol-00 is running 7.1-S+ZFS. > How recent a 'stable' is it? very: FreeBSD warhol-00 7.1-STABLE FreeBSD 7.1-STABLE #37: Fri Jan 23 10:41:54 IST 2009 and its amd64. > Where does ZFS fit in? Is sunfire:/dist mountpoint in a local ZFS or > is a local ZFS mountpoint inside the sunfire:/dist mount? warhole is a nfs server, the storage is a ZFS local raid, the errors occure on a nfs/tcp mounted file system on warhol. > Do you get the same problems without any ZFS mounts? I have several hosts running 7.1-stable without nfs exported ZFS, non have this error That is why I think there is a connection, because on two, which have ZFS exported the problem appears. > Is this a TCP or UDP NFS mount? What happens if you switch protocols? i'll try but not trivial. the other difference between the boxes is that one is dataless, while the other is stand-alone (well, / is on a local disk, but /usr/local & home dirs are on the network/nfs). > What NIC are you using and are you seeing any network errors? bce, the boxes are Dell-2950, but no visible errors. > Are you able to capture a protocol trace showing the transaction including > erroneous packet? I have started the capture, but since I don't know what triggers the problem, it will take some time. I will also start capturing packets at the router level, but that will have to wait till next week. thanks, danny > > --=20 > Peter Jeremy > > --gKMricLos+KVdGMg > Content-Type: application/pgp-signature > Content-Disposition: inline > > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v2.0.10 (FreeBSD) > > iEYEARECAAYFAkmL4t8ACgkQ/opHv/APuIeXNQCgg68TMfH6zh1gRaKfhCkNQi+0 > y10AoJcG7/7fiqL8oUpsWhIwhceWSFPo > =MKeo > -----END PGP SIGNATURE----- > > --gKMricLos+KVdGMg--