Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 14 Mar 2001 14:35:37 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 14 Mar 2001 14:35:27 -0500 Received: from h24-65-192-120.cg.shawcable.net ([24.65.192.120]:18941 "EHLO webber.adilger.int") by vger.kernel.org with ESMTP id ; Wed, 14 Mar 2001 14:35:17 -0500 From: Andreas Dilger Message-Id: <200103141934.f2EJY6Z10216@webber.adilger.int> Subject: Re: magic device renumbering was -- Re: Linux 2.4.2ac20 In-Reply-To: from Lars Kellogg-Stedman at "Mar 14, 2001 02:11:57 pm" To: Lars Kellogg-Stedman Date: Wed, 14 Mar 2001 12:34:06 -0700 (MST) CC: Christoph Hellwig , John Jasen , linux-kernel@vger.kernel.org, AmNet Computers X-Mailer: ELM [version 2.4ME+ PL66 (25)] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Lars writes: > > Put LABEL= in you fstab in place of the device name. > > Which is great, for filesystems that support labels. Unfortunately, > this isn't universally available -- for instance, you cannot mount > a swap partition by label or uuid, so it is not possible to completely > isolate yourself from the problems of disk device renumbering. There is room for a LABEL and/or UUID in the swap superblock, if you would want to implement support for this. I took a look once, and it should be possible to add in a compatible way. Of course, you can always put swap into LVM, which also makes it (along with filesystems other than ext2) immune from the nasty device name changes. Cheers, Andreas -- Andreas Dilger \ "If a man ate a pound of pasta and a pound of antipasto, \ would they cancel out, leaving him still hungry?" http://www-mddsp.enel.ucalgary.ca/People/adilger/ -- Dogbert - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/