From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Mon, 7 May 2001 00:15:08 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Mon, 7 May 2001 00:14:58 -0400 Received: from h24-65-193-28.cg.shawcable.net ([24.65.193.28]:37360 "EHLO webber.adilger.int") by vger.kernel.org with ESMTP id ; Mon, 7 May 2001 00:14:52 -0400 From: Andreas Dilger Message-Id: <200105070408.f4748seA026331@webber.adilger.int> Subject: Re: [PATCH] SMP race in ext2 - metadata corruption. In-Reply-To: "from Alan Cox at May 6, 2001 09:58:38 pm" To: Alan Cox Date: Sun, 6 May 2001 22:08:54 -0600 (MDT) CC: Andreas Dilger , Alexander Viro , Chris Wedgwood , Andrea Arcangeli , Jens Axboe , Rogier Wolff , Linus Torvalds , volodya@mindspring.com, linux-kernel@vger.kernel.org X-Mailer: ELM [version 2.4ME+ PL87 (25)] MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Alan writes: > > Actually, the EVMS project does exactly this. All I/O is done on a full > > disk basis, and essentially does block remapping for each partition. This > > also solves the problem of cache inconsistency if accessing the parent > > device vs. accessing the partition. > > Interesting. Can EVMS handle the partition labels used by the LVM layer - ie > could it replace it as well ? Yes, they already support all current LVM volumes (including snapshots). However, the user-space tools to set up new LVM volumes and manage existing ones is not ready yet. The last I talked with the IBM folks (a week ago), they said they were starting to work on the user-space tools. Because the whole partition/volume code is modular in EVMS, they will be able to handle AIX LVM, HP/UX LVM, etc. volumes in addition to the normal DOS or other partitions. 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