From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with archive (Exim 4.43) id 1PkQGf-0001r8-LV for mharc-grub-devel@gnu.org; Tue, 01 Feb 2011 19:08:17 -0500 Received: from [140.186.70.92] (port=44764 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1PkQGc-0001pD-U6 for grub-devel@gnu.org; Tue, 01 Feb 2011 19:08:15 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1PkQGc-0003FZ-1g for grub-devel@gnu.org; Tue, 01 Feb 2011 19:08:14 -0500 Received: from cdptpa-omtalb.mail.rr.com ([75.180.132.120]:50383) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1PkQGb-0003Ev-Ui for grub-devel@gnu.org; Tue, 01 Feb 2011 19:08:13 -0500 X-Authority-Analysis: v=1.1 cv=Inhw+Jdt7z1D3BivGPfn2aw54OvUEJw5lAn/booRZkE= c=1 sm=0 a=8nJEP1OIZ-IA:10 a=JmtI77n5PKyEllQSDapvNg==:17 a=IT83E34QncTnjVipmPEA:9 a=O3qCDCEBjKGNiDF9Z0w1i6uWLHIA:4 a=wPNLvfGTeEIA:10 a=_EiSqAhmdLAJ88Km:21 a=3ZB4kiSL5Wcuzknk:21 a=JmtI77n5PKyEllQSDapvNg==:117 X-Cloudmark-Score: 0 X-Originating-IP: 184.91.189.177 Received: from [184.91.189.177] ([184.91.189.177:42213] helo=[192.168.1.2]) by cdptpa-oedge04.mail.rr.com (envelope-from ) (ecelerity 2.2.3.46 r()) with ESMTP id 77/D9-13137-960A84D4; Wed, 02 Feb 2011 00:08:10 +0000 Message-ID: <4D48A069.8010202@cfl.rr.com> Date: Tue, 01 Feb 2011 19:08:09 -0500 From: Phillip Susi User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.13) Gecko/20101208 Thunderbird/3.1.7 MIME-Version: 1.0 To: The development of GNU GRUB References: <4CF81A16.2010606@cfl.rr.com> <20101203123615.6edce071@notabene.brown> <4CF860EB.7010005@cfl.rr.com> <20101209094354.4c6aaa93@notabene.brown> <4D01328D.9050503@cfl.rr.com> <4D46E6D7.2000205@cfl.rr.com> <20110131170349.GR343@caffeine.csclub.uwaterloo.ca> <4D470BCF.20508@cfl.rr.com> <20110131221252.GT343@caffeine.csclub.uwaterloo.ca> <4D47627A.1080509@cfl.rr.com> <20110201162642.GU343@caffeine.csclub.uwaterloo.ca> In-Reply-To: <20110201162642.GU343@caffeine.csclub.uwaterloo.ca> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 75.180.132.120 Cc: Neil Brown , linux-raid@vger.kernel.org, John Sheu , Lennart Sorensen Subject: Re: Software RAID and Fakeraid X-BeenThere: grub-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: The development of GNU GRUB List-Id: The development of GNU GRUB List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 02 Feb 2011 00:08:15 -0000 On 02/01/2011 11:26 AM, Lennart Sorensen wrote: > If the raid stores the raid info at the end, then the data starts at > sector 0. So no space for a bootloader at all. I know that is how it works with 0.9, but are you sure it is for 1.0? If so, then for anything but raid-1 we will just have to try to install only to the first device if it has an MBR. > Certainly makes sense. Now is 4K enough for a boot loader? Not sure. It is enough for the MBR. The core image will need to go elsewhere, hence the proposal to ask mdadm for a suitable location. > I personally consider soft raid on raw devices so convluted that I > have never done it. I would rather have something I know works with my > bootloader and other tools, than gain that extra 1MB (at most) that not > having partitions gives. Also given many PCs won't boot from a drive > without a partition table, it isn't even an option then. That is why I like the idea of 1.2 since you could still have a bootable MBR when using the whole disk. Though now that you mention it, I can't think of a good reason to use the whole disk instead of a partition either.