From owner-freebsd-questions@FreeBSD.ORG Sun Sep 5 02:48:44 2004 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 241F016A4CE for ; Sun, 5 Sep 2004 02:48:44 +0000 (GMT) Received: from dan.emsphone.com (dan.emsphone.com [199.67.51.101]) by mx1.FreeBSD.org (Postfix) with ESMTP id D361C43D2D for ; Sun, 5 Sep 2004 02:48:43 +0000 (GMT) (envelope-from dan@dan.emsphone.com) Received: (from dan@localhost) by dan.emsphone.com (8.12.11/8.12.11) id i852mhM1086625; Sat, 4 Sep 2004 21:48:43 -0500 (CDT) (envelope-from dan) Date: Sat, 4 Sep 2004 21:48:43 -0500 From: Dan Nelson To: "Marc G. Fournier" Message-ID: <20040905024842.GC44261@dan.emsphone.com> References: <20040904222712.F812@ganymede.hub.org> <20040905015820.GA44261@dan.emsphone.com> <20040904232130.O812@ganymede.hub.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20040904232130.O812@ganymede.hub.org> X-OS: FreeBSD 5.3-BETA2 X-message-flag: Outlook Error User-Agent: Mutt/1.5.6i cc: freebsd-questions@freebsd.org Subject: Re: File system replication between servers X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 05 Sep 2004 02:48:44 -0000 In the last episode (Sep 04), Marc G. Fournier said: > On Sat, 4 Sep 2004, Dan Nelson wrote: > > How about a shared SCSI drive, filesystems only mounted on the > > master. When the master fails, the slave fscks the filesystems, > > mounts them, and becomes the master. Tried and true. You could > > even use background fsck and get immediate failover. > > need to do this above the hardware layer ... am looking at 50% of > services running on each of 2 servers, with failover to 100% running > on one of the servers if the other goes down ... Since FreeBSD doesn't lock SCSI devices afaik, you should be able to mount separate filesystems on different machines with no problems. -- Dan Nelson dnelson@allantgroup.com