From owner-freebsd-questions@FreeBSD.ORG Thu Sep 18 07:42:38 2003 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 B682916A4DB for ; Thu, 18 Sep 2003 07:42:38 -0700 (PDT) Received: from clunix.cl.msu.edu (clunix.cl.msu.edu [35.9.2.10]) by mx1.FreeBSD.org (Postfix) with ESMTP id AD48F43FDF for ; Thu, 18 Sep 2003 07:42:37 -0700 (PDT) (envelope-from jerrymc@clunix.cl.msu.edu) Received: from clunix.cl.msu.edu (localhost [127.0.0.1]) by clunix.cl.msu.edu (8.12.9/8.12.9) with ESMTP id h8IEgNOg022993; Thu, 18 Sep 2003 10:42:28 -0400 (EDT) Received: (from jerrymc@localhost) by clunix.cl.msu.edu (8.12.9/8.12.9/Submit) id h8IEgE28022992; Thu, 18 Sep 2003 10:42:14 -0400 (EDT) From: Jerry McAllister Message-Id: <200309181442.h8IEgE28022992@clunix.cl.msu.edu> To: dnelson@allantgroup.com (Dan Nelson) Date: Thu, 18 Sep 2003 10:42:13 -0400 (EDT) In-Reply-To: <20030917193310.GF48979@dan.emsphone.com> from "Dan Nelson" at Sep 17, 2003 02:33:11 PM X-Mailer: ELM [version 2.5 PL2] MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit cc: Eric cc: freebsd-questions@freebsd.org Subject: Re: fbsd & fibre channel & SANs 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: Thu, 18 Sep 2003 14:42:38 -0000 > > In the last episode (Sep 17), Eric said: > > I'm trying set up a cluster of freebsd fileservers sharing a common > > set of volumes/drives/raids over netatalk to a bunch of OS 9 clients. > > Each fileserver has a Qlogic 2100 fibre channel card connected to a > > switch. Also connected to the switch are several fibre channel raid > > controllers, with raids attached to them. I have no problem mount and > > using the raid volumes on the freebsd servers. > > > > What I'd really like to do is mount the same volume on two or more > > servers, which I can do, but one server does not know about the other > > server's changes to the disk. I'm sure this results in files being > > overwritten since each server thinks it owns the disk. I'm sure > > things like softupdates compund my problem even more. > > You would need a shared storage filesystem; GFS is the only one I know > of, and that's Linux-only. > > Is there a way to have two machines share a disk, and communicate > > between them (over the network?) the changes? I've seen AFS, and it's > > mostly what i'm trying to do, but it doesn't work with OS 9 clients. > > I want an OS 9 client to be able to pick a server in the cluster > > (from their chooser) and be presented with the same shared volumes, > > regardless of the chosen server. Any help?? > > AFS looks like it replicates files onto multiple servers, so if one > goes down the data is still available somewhere else. The servers do > not share backend filesystems. Don't you just wish OpenAFS for FreeBSD (and some of the others) was finished and ready to go. That would be so wonderful. ////jerry >... > > -- > Dan Nelson > dnelson@allantgroup.com