From owner-freebsd-hackers@FreeBSD.ORG Fri Aug 15 23:35:13 2003 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id AE74C37B401 for ; Fri, 15 Aug 2003 23:35:13 -0700 (PDT) Received: from heron.mail.pas.earthlink.net (heron.mail.pas.earthlink.net [207.217.120.189]) by mx1.FreeBSD.org (Postfix) with ESMTP id 9657A43FD7 for ; Fri, 15 Aug 2003 23:35:12 -0700 (PDT) (envelope-from tlambert2@mindspring.com) Received: from user-2ivflb5.dialup.mindspring.com ([165.247.213.101] helo=mindspring.com) by heron.mail.pas.earthlink.net with asmtp (SSLv3:RC4-MD5:128) (Exim 3.33 #1) id 19nueS-0001O0-00; Fri, 15 Aug 2003 23:35:00 -0700 Message-ID: <3F3DD059.DF60BD3@mindspring.com> Date: Fri, 15 Aug 2003 23:34:01 -0700 From: Terry Lambert X-Mailer: Mozilla 4.79 [en] (Win98; U) X-Accept-Language: en MIME-Version: 1.0 To: Attila Nagy References: <20030814110327.GD395@garage.freebsd.pl> <20030814175431.GA21219@spc.org><3F3CC927.4030306@fsn.hu> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-ELNK-Trace: b1a02af9316fbb217a47c185c03b154d40683398e744b8a427e5f4aad24b53a9b2e9c7c55cdc35eb350badd9bab72f9c350badd9bab72f9c350badd9bab72f9c cc: Buckie cc: freebsd-hackers@freebsd.org Subject: Re: GEOM Gate. X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 16 Aug 2003 06:35:14 -0000 Attila Nagy wrote: > Pawel Jakub Dawidek wrote: > > It'll be, but probably in read-write mode on one machine and read-only > > mode on rest machines, because you don't export file systems here, but > > disk devices. > > This doesn't work on a shared SCSI bus, so I suspect sharing the device > on the net won't help. It works on firewire and it works on a dual port RAID array (as a separate box containing the RAID array). It's supposed to work on SCSI III, but the vendors can quit their arguing and jockey'ing for advantage long enough to approve the range locking specification (which is why GFS uses a network daemon). SAN and NAS are also options, but of course, you still have to have an FS that can deal with it, and an external locking protocol. -- Terry