From mboxrd@z Thu Jan 1 00:00:00 1970 From: Phillip Susi Subject: Re: Software RAID and Fakeraid Date: Tue, 01 Feb 2011 19:08:09 -0500 Message-ID: <4D48A069.8010202@cfl.rr.com> 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> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20110201162642.GU343@caffeine.csclub.uwaterloo.ca> Sender: linux-raid-owner@vger.kernel.org To: The development of GNU GRUB Cc: Lennart Sorensen , Neil Brown , John Sheu , linux-raid@vger.kernel.org List-Id: linux-raid.ids 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.