From owner-freebsd-scsi Sat Jul 29 13:14:44 2000 Delivered-To: freebsd-scsi@freebsd.org Received: from implode.root.com (root.com [209.102.106.178]) by hub.freebsd.org (Postfix) with ESMTP id 8CCA537B79F for ; Sat, 29 Jul 2000 13:14:41 -0700 (PDT) (envelope-from dg@implode.root.com) Received: from implode.root.com (localhost [127.0.0.1]) by implode.root.com (8.8.8/8.8.5) with ESMTP id NAA11764; Sat, 29 Jul 2000 13:00:32 -0700 (PDT) Message-Id: <200007292000.NAA11764@implode.root.com> To: Francisco Reyes Cc: scsi@FreeBSD.ORG Subject: Re: Sharing external RAID with FreeBSD In-reply-to: Your message of "Sat, 29 Jul 2000 13:02:20 PDT." <20000729200220.25759.qmail@web217.mail.yahoo.com> From: David Greenman Reply-To: dg@root.com Date: Sat, 29 Jul 2000 13:00:32 -0700 Sender: owner-freebsd-scsi@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org >What would it take for FreeBSD to be able to share an >external SCSI RAID system? If the servers are accessing different LUNs (and thus different filesystems), then it should work already. If you want the servers to have shared access to the same filesystem, then that's a whole different thing that requires a new type of filesystem. Basically the servers need to coordinate accesses to the filesystem via a lock protocol, and they need to have a way of handling cache coherency. The closest thing to meeting these goals that I've seen so far is the "Global File System", and last I heard, someone was working on porting it to FreeBSD. -DG David Greenman Co-founder, The FreeBSD Project - http://www.freebsd.org Manufacturer of high-performance Internet servers - http://www.terasolutions.com Pave the road of life with opportunities. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message