From owner-freebsd-arch Tue Jul 25 13:42: 4 2000 Delivered-To: freebsd-arch@freebsd.org Received: from feral.com (feral.com [192.67.166.1]) by hub.freebsd.org (Postfix) with ESMTP id 4479C37B8CA for ; Tue, 25 Jul 2000 13:42:01 -0700 (PDT) (envelope-from mjacob@feral.com) Received: from semuta.feral.com (semuta [192.67.166.70]) by feral.com (8.9.3/8.9.3) with ESMTP id NAA30935; Tue, 25 Jul 2000 13:38:25 -0700 Date: Tue, 25 Jul 2000 13:37:46 -0700 (PDT) From: Matthew Jacob Reply-To: mjacob@feral.com To: Poul-Henning Kamp Cc: freebsd-arch@FreeBSD.ORG Subject: Re: How much do we need the all-singing, all-dancing devfs? In-Reply-To: <13949.964555205@critter.freebsd.dk> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-arch@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > >> handled. > > > >For devices that have been so labelled, yes, and that the label in question > >can be written to the device media (or stored in the device). This means that > >you have an import step. Not the worst thing in the world, but it does indeed > >restrict usage and sharing on a SAN- you can't rewrite the 50 NT volume labels > >on the SAN to find a FreeBSD identifier. > > Ahh, but if they are NT volumes, the are unlikely to be UFS filesystems, > and in that case I'm sure we would simply adopt the NT labels, no ? What if they're 'no' labels? You can do newfs -t ufs da0 SIZE right? You don't *need* to have a label.... > Maybe the solution here is that each device and indeed partition can > have multiple labels, and any one of those are good enough for /etc/fstab ? What I want is labels. But also what I want is a property that doesn't depend on writing anything on the device media itself. It's stretching it a bit, but not too far, to say I want to have cd9660 persistently addressable volumes. I may not know, from session to session, the contents actual ISO volume label. And I can't write anything to it. But the device itself has a persistent property of (VPD info Drive Serial number, or WWN in the Fibre Channel case (say)). Why can't I choose to track that particular device (part of one of those huge Sanyo CD changers, say...) by the non-label persistent identifier and not have to worry about the bus address changes? -matt To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message