Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262304AbUCVTaK (ORCPT ); Mon, 22 Mar 2004 14:30:10 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262311AbUCVTaJ (ORCPT ); Mon, 22 Mar 2004 14:30:09 -0500 Received: from parcelfarce.linux.theplanet.co.uk ([195.92.249.252]:27530 "EHLO www.linux.org.uk") by vger.kernel.org with ESMTP id S262304AbUCVTaB (ORCPT ); Mon, 22 Mar 2004 14:30:01 -0500 Message-ID: <405F3EA8.6060606@pobox.com> Date: Mon, 22 Mar 2004 14:29:44 -0500 From: Jeff Garzik User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4) Gecko/20030703 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Carl-Daniel Hailfinger CC: Wilfried Weissmann , Arjan van de Ven , "Kevin P. Fleming" , Linux Kernel Mailing List , Bartlomiej Zolnierkiewicz , Device mapper devel list , Thomas Horsten , medley@lists.infowares.com Subject: Re: ATARAID/FakeRAID/HPTRAID/PDCRAID as dm targets? References: <405C8B39.8080609@gmx.net> <405CAEC7.9080104@pobox.com> <405CFC85.70004@backtobasicsmgmt.com> <20040321074711.GA13232@devserv.devel.redhat.com> <405D9CDA.6070107@gmx.at> <405F3B1C.3030500@gmx.net> In-Reply-To: <405F3B1C.3030500@gmx.net> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2303 Lines: 80 Carl-Daniel Hailfinger wrote: > Wilfried Weissmann wrote: > >>Arjan van de Ven wrote: >> >> >>>On Sat, Mar 20, 2004 at 07:23:01PM -0700, Kevin P. Fleming wrote: >>> >>> >>>>Jeff Garzik wrote: >>>> >>>> >>>> >>>>>So go ahead, and I'll lend you as much help as I can. I have the >>>>>full Promise RAID docs, and it seems like another guy on the lists >>>>>has full Silicon Image "medley" RAID docs... > > > Jeff: May I request your docs? Unfortunately not, but I can get you in touch with somebody at Promise who can. They're definitely interested in working with the open source community. Not public... > Well, I had something in mind which closely resembles the ataraid-detect > tool Thomas Horsten (Medley RAID) suggested. > > http://lists.infowares.com/archive/medley/2004-February/000001.html > > OK, I was even aiming for less: Write an ataraid-detect tool which outputs > the correct mapping for dmsetup. If I manage to write it generically > enough, it can be integrated into evms or used as a standalone program, > whatever you like. That's pretty nice. Very Unix-ish: provide a small, pluggable piece that does one thing, and does it well. >>1. its all within evms >>There is no need for additional tools required to setup the volume >>(thinking about installers and initrd...). > > > The EVMS sample initrd is HUGE. (2.1 MB) I'm aiming for a initrd size of > less than 1/10 of that. Cool :) >>4. nice clickety-click user interface >>Especially useful for lazy people like me. ;) > > > I prefer the "no user interface" approach. But then again, I'm biased. Agreed -- a minimal implementation is needed first anyway. The BIOS of these proprietary RAID thingies typically provides the user interface. >>What do you think? > > > I'll use your work as a foundation. First step is integrating detection > for non-HPT arrays. If the code looks too messy after that, I still can > refactor it. > > As soon as I have some code to get at least PDCRAID working, I'll post again. Feel free to ask me questions, too. Jeff - 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/