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: Tue, 29 Jan 2008 12:14:51 +0100 Message-ID: <479F0AAB.3090702@rabbit.us> References: <479EAF42.6010604@pobox.com> <18334.46306.611615.493031@notabene.brown> <479F07E1.7060408@pobox.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <479F07E1.7060408@pobox.com> Sender: linux-raid-owner@vger.kernel.org To: Moshe Yudkowsky Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids Moshe Yudkowsky wrote: > > One of the puzzling things about this is that I conceive of RAID10 as > two RAID1 pairs, with RAID0 on top of to join them into a large drive. > However, when I use --level=10 to create my md drive, I cannot find out > which two pairs are the RAID1's: the --detail doesn't give that > information. Re-reading the md(4) man page, I think I'm badly mistaken > about RAID10. > > Furthermore, since grub cannot find the /boot on the md drive, I deduce > that RAID10 isn't what the 'net descriptions say it is. > It is exactly what the names implies - a new kind of RAID :) The setup you describe is not RAID10 it is RAID1+0. As far as how linux RAID10 works - here is an excellent article: http://en.wikipedia.org/wiki/Non-standard_RAID_levels#Linux_MD_RAID_10 Peter