From owner-freebsd-fs@FreeBSD.ORG Fri Oct 14 17:47:32 2005 Return-Path: X-Original-To: freebsd-fs@FreeBSD.org Delivered-To: freebsd-fs@FreeBSD.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 1DCE116A420 for ; Fri, 14 Oct 2005 17:47:32 +0000 (GMT) (envelope-from Nicolas.Kowalski@imag.fr) Received: from imag.imag.fr (imag.imag.fr [129.88.30.1]) by mx1.FreeBSD.org (Postfix) with ESMTP id 4661943D5E for ; Fri, 14 Oct 2005 17:47:31 +0000 (GMT) (envelope-from Nicolas.Kowalski@imag.fr) Received: from mail-veri.imag.fr (mail-veri.imag.fr [129.88.43.52]) by imag.imag.fr (8.13.0/8.13.0) with ESMTP id j9EHlRNJ022957 (version=TLSv1/SSLv3 cipher=AES256-SHA bits=256 verify=NO) for ; Fri, 14 Oct 2005 19:47:27 +0200 (CEST) Received: from corbeau.imag.fr ([129.88.43.162]) by mail-veri.imag.fr with esmtps (TLS-1.0:RSA_AES_256_CBC_SHA:32) (Exim 4.50) id 1EQTeR-0006VU-17 for freebsd-fs@FreeBSD.org; Fri, 14 Oct 2005 19:47:27 +0200 Received: from kowalski by corbeau.imag.fr with local (Exim 4.50) id 1EQTeQ-0001xy-VS for freebsd-fs@FreeBSD.org; Fri, 14 Oct 2005 19:47:26 +0200 To: freebsd-fs@FreeBSD.org References: <20051014160128.hev160v52ossokg0@wwws.cs.ait.ac.th> <20051014045824.V5343@odysseus.silby.com> <434FD761.3050506@centtech.com> <434FEDC6.4040405@centtech.com> From: Nicolas KOWALSKI Date: Fri, 14 Oct 2005 19:47:26 +0200 In-Reply-To: <434FEDC6.4040405@centtech.com> Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: Nicolas Kowalski X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-1.6 (imag.imag.fr [129.88.30.1]); Fri, 14 Oct 2005 19:47:27 +0200 (CEST) X-IMAG-MailScanner: Found to be clean X-IMAG-MailScanner-Information: Please contact the ISP for more information Cc: Subject: Re: FreeBSD NFS server not responding to TCP SYN packets from Linux/SunOS clients 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: Fri, 14 Oct 2005 17:47:33 -0000 Eric Anderson writes: > Nicolas KOWALSKI wrote: >> Eric Anderson writes: >> >>>Nicolas KOWALSKI wrote: >>> >>>>Mike Silbersack writes: >>>> >>>> >>>>>Actually, there may be a quick fix for this specific machine. If >>>>>you set net.inet.tcp.keepidle to 1 minute (60*whatever kern.hz >>>>>is), that'll cause keepalive packets to be sent every minute to >>>>>an idle connection, rather than every 2 hours. That would kill >>>>>the stuck connections much quicker. >> >>>>Unfortunately, this does not work as expected. I just tested with >>>>my workstation (Linux 2.6), with NFS filesystems mounted with TCP; >>>>when the station rebooted abruptely, mounting the same NFS >>>>filesystems hung more than 1 minute (15 minutes just now). During >>>>this hang, I saw on the server, using netstat, the nfsd process >>>>related to my workstation in ESTABLISHED state. >>> >>> >>>Man fixmount? >> This is a FreeBSD-only command apparently. I did not find it on >> Linux or Solaris. It could have been useful, by calling it before >> NFS filesystems are mounted on clients, yes. > > It's available on Fedora Core 2 and 3 at least. So, its a non-option, because we are only using Debian Sarge and Solaris 9 UNIX workstations. :-( Thanks for your advice, -- Nicolas