From owner-freebsd-net@FreeBSD.ORG Tue Aug 15 12:30:45 2006 Return-Path: X-Original-To: freebsd-net@FreeBSD.ORG Delivered-To: freebsd-net@FreeBSD.ORG Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 3391016A4DE for ; Tue, 15 Aug 2006 12:30:45 +0000 (UTC) (envelope-from regnauld@catpipe.net) Received: from moof.catpipe.net (moof.catpipe.net [195.249.214.130]) by mx1.FreeBSD.org (Postfix) with ESMTP id 65D0643D72 for ; Tue, 15 Aug 2006 12:30:38 +0000 (GMT) (envelope-from regnauld@catpipe.net) Received: from localhost (moof.catpipe.net [195.249.214.130]) by localhost.catpipe.net (Postfix) with ESMTP id BAD3863489C; Tue, 15 Aug 2006 14:30:36 +0200 (CEST) Received: from moof.catpipe.net ([195.249.214.130]) by localhost (moof.catpipe.net [195.249.214.130]) (amavisd-new, port 10024) with ESMTP id 09280-08; Tue, 15 Aug 2006 14:30:36 +0200 (CEST) Received: from vinyl.catpipe.net (vinyl.catpipe.net [195.249.214.189]) by moof.catpipe.net (Postfix) with ESMTP id DDDD163474C; Tue, 15 Aug 2006 14:30:35 +0200 (CEST) Received: by vinyl.catpipe.net (Postfix, from userid 1006) id E0C0978C31; Tue, 15 Aug 2006 14:30:32 +0200 (CEST) Date: Tue, 15 Aug 2006 14:30:32 +0200 From: Phil Regnauld To: Brian Candler Message-ID: <20060815123032.GR8503@catpipe.net> References: <200608141555.k7EFthXw092647@lurza.secnetix.de> <44E0C450.8050602@fsn.hu> <20060815122533.GB89848@uk.tiscali.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20060815122533.GB89848@uk.tiscali.com> X-Operating-System: FreeBSD 6.1-PRERELEASE i386 Organization: catpipe Systems ApS User-Agent: Mutt/1.5.11 X-Virus-Scanned: amavisd-new at catpipe.net Cc: freebsd-net@FreeBSD.ORG Subject: Re: Redundant/failover NFS servers - stale NFS file handle X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 15 Aug 2006 12:30:45 -0000 Brian Candler (B.Candler) writes: > > So to make an update, you would have to unmount from box 2, remount RW on > box 1, make the change, remount RO on box 1, and mount RO again on box 2. To make it short: if you want a reliable NFS head, you need NetApp. If you want to make failover, you'll need something like WAFL that has virtual inodes and allows for concurrent access from multiple writers. This is more of a freebsd-fs discussion.