From owner-freebsd-stable Fri Feb 1 13:12:15 2002 Delivered-To: freebsd-stable@freebsd.org Received: from freebie.xs4all.nl (freebie.xs4all.nl [213.84.32.253]) by hub.freebsd.org (Postfix) with ESMTP id D0FEC37B400; Fri, 1 Feb 2002 13:12:03 -0800 (PST) Received: (from wkb@localhost) by freebie.xs4all.nl (8.11.6/8.11.6) id g11LBfY09356; Fri, 1 Feb 2002 22:11:41 +0100 (CET) (envelope-from wkb) Date: Fri, 1 Feb 2002 22:11:41 +0100 From: Wilko Bulte To: Doug White Cc: Jesper Skriver , stable@FreeBSD.ORG Subject: Re: mount the same filesystem read-only on multiple boxes, and read-write on one ? Message-ID: <20020201221141.B9318@freebie.xs4all.nl> 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-OS: FreeBSD 4.5-STABLE X-PGP: finger wilko@freebsd.org 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 ... > > Also, most SANs don't let you export a volume to multiple systems. That is not an attribute of the SAN but of the array controller. I can 'export' a LUN on our CPQ HSG80 controllers to lots of servers at the same time. Need to be able to do that for example for Tru64 Truclusters. W/ -- | / o / /_ _ email: wilko@FreeBSD.org |/|/ / / /( (_) Bulte Arnhem, the Netherlands To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message