From owner-freebsd-stable  Fri Feb  1 12:30: 9 2002
Delivered-To: freebsd-stable@freebsd.org
Received: from resnet.uoregon.edu (resnet.uoregon.edu [128.223.122.47])
	by hub.freebsd.org (Postfix) with ESMTP
	id E05EF37B400; Fri,  1 Feb 2002 12:30:06 -0800 (PST)
Received: from localhost (dwhite@localhost)
	by resnet.uoregon.edu (8.11.3/8.10.1) with ESMTP id g11KUZn11410;
	Fri, 1 Feb 2002 12:30:35 -0800 (PST)
Date: Fri, 1 Feb 2002 12:30:35 -0800 (PST)
From: Doug White <dwhite@resnet.uoregon.edu>
To: Jesper Skriver <jesper@FreeBSD.ORG>
Cc: stable@FreeBSD.ORG
Subject: Re: mount the same filesystem read-only on multiple boxes, and
 read-write on one ?
In-Reply-To: <20020201195701.F21826@FreeBSD.org>
Message-ID: <20020201122950.C9956-100000@resnet.uoregon.edu>
X-All-Your-Base: are belong to us
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Sender: owner-freebsd-stable@FreeBSD.ORG
Precedence: bulk
List-ID: <freebsd-stable.FreeBSD.ORG>
List-Archive: <http://docs.freebsd.org/mail/> (Web Archive)
List-Help: <mailto:majordomo@FreeBSD.ORG?subject=help> (List Instructions)
List-Subscribe: <mailto:majordomo@FreeBSD.ORG?subject=subscribe%20freebsd-stable>
List-Unsubscribe: <mailto:majordomo@FreeBSD.ORG?subject=unsubscribe%20freebsd-stable>
X-Loop: FreeBSD.ORG

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.

Doug White                    |  FreeBSD: The Power to Serve
dwhite@resnet.uoregon.edu     |  www.FreeBSD.org


To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-stable" in the body of the message