From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Rabbitson Subject: Re: In this partition scheme, grub does not find md information? Date: Wed, 30 Jan 2008 13:01:37 +0100 Message-ID: <47A06721.4090307@rabbit.us> References: <479EAF42.6010604@pobox.com> <18334.46306.611615.493031@notabene.brown> <479F07E1.7060408@pobox.com> <479F0AAB.3090702@rabbit.us> <479F331F.7080902@msgid.tls.msk.ru> <479F3C74.1050605@rabbit.us> <479F42A5.8040007@msgid.tls.msk.ru> <479F5177.6060206@pobox.com> <479F557D.20502@rabbit.us> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <479F557D.20502@rabbit.us> Sender: linux-raid-owner@vger.kernel.org Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids Peter Rabbitson wrote: > Moshe Yudkowsky wrote: >> Here's a baseline question: if I create a RAID10 array using default >> settings, what do I get? I thought I was getting RAID1+0; am I really? > > Maybe you are, depending on your settings, but this is beyond the point. > No matter what 1+0 you have (linux, classic, or otherwise) you can not > boot from it, as there is no way to see the underlying filesystem > without the RAID layer. > > With the current state of affairs (available mainstream bootloaders) the > rule is: > Block devices containing the kernel/initrd image _must_ be either: > * a regular block device (/sda1, /hda, /fd0, etc.) > * or a linux RAID 1 with the superblock at the end of the device > (0.9 or 1.2) > > If any poor soul finds this in the mailing list archives, the above should read: ... * or a linux RAID 1 with the superblock at the end of the device (either version 0.9 or _1.0_) ....