From owner-freebsd-stable Fri Feb 1 12:33:59 2002 Delivered-To: freebsd-stable@freebsd.org Received: from freesbee.wheel.dk (freesbee.wheel.dk [193.162.159.97]) by hub.freebsd.org (Postfix) with ESMTP id 288C837B416 for ; Fri, 1 Feb 2002 12:33:55 -0800 (PST) Received: by freesbee.wheel.dk (Postfix, from userid 1001) id F20CB5EF4; Fri, 1 Feb 2002 21:33:53 +0100 (CET) Date: Fri, 1 Feb 2002 21:33:53 +0100 From: Jesper Skriver To: Doug White Cc: stable@FreeBSD.ORG Subject: Re: mount the same filesystem read-only on multiple boxes, and read-write on one ? Message-ID: <20020201213353.B47427@skriver.dk> Mail-Followup-To: Jesper Skriver , Doug White , stable@FreeBSD.ORG References: <20020201195701.F21826@FreeBSD.org> <20020201122950.C9956-100000@resnet.uoregon.edu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <20020201122950.C9956-100000@resnet.uoregon.edu>; from dwhite@resnet.uoregon.edu on Fri, Feb 01, 2002 at 12:30:35PM -0800 X-PGP-Fingerprint: 6B88 9CE8 66E9 E631 C9C5 5EB4 22AB F0EC F956 1C31 X-PGP-Public-Key: http://freesbee.wheel.dk/~jesper/gpgkey.pub Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Fri, Feb 01, 2002 at 12:30:35PM -0800, Doug White wrote: > On Fri, 1 Feb 2002, Jesper Skriver wrote: > > > I was wondering if it would be possible to mount the same filesystem > > (over fiberchannel) read-only on multiple boxes, while at the same > > time it would be mounted read-write on a single box which write > > updates to the files. > > I think some work would be needed to disable caching for the RO > filesystem. It couldn't cache anything since it could change out from > under it ... That would be less of a problem, assuming it wouldn't cache it for long periods of time anyway. > Also, most SANs don't let you export a volume to multiple systems. I was told by the storage people that it possible, I believe they use it on some Solaris clusters too. /Jesper -- Jesper Skriver, jesper(at)skriver(dot)dk - CCIE #5456 Work: Network manager @ AS3292 (Tele Danmark DataNetworks) Private: FreeBSD committer @ AS2109 (A much smaller network ;-) One Unix to rule them all, One Resolver to find them, One IP to bring them all and in the zone to bind them. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message