From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with archive (Exim 4.43) id 1MVtne-00061S-H1 for mharc-grub-devel@gnu.org; Tue, 28 Jul 2009 17:01:30 -0400 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1MVtnZ-0005xg-96 for grub-devel@gnu.org; Tue, 28 Jul 2009 17:01:25 -0400 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1MVtnT-0005tk-16 for grub-devel@gnu.org; Tue, 28 Jul 2009 17:01:23 -0400 Received: from [199.232.76.173] (port=40406 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1MVtnS-0005tV-CL for grub-devel@gnu.org; Tue, 28 Jul 2009 17:01:18 -0400 Received: from xvm-190-8.ghst.net ([217.70.190.8]:47912 helo=aybabtu.com) by monty-python.gnu.org with esmtps (TLS-1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1MVtnR-0007jT-Bm for grub-devel@gnu.org; Tue, 28 Jul 2009 17:01:17 -0400 Received: from [192.168.10.10] (helo=thorin) by aybabtu.com with esmtp (Exim 4.69) (envelope-from ) id 1MVtn4-0001DX-JR for grub-devel@gnu.org; Tue, 28 Jul 2009 21:00:54 +0000 Received: from rmh by thorin with local (Exim 4.69) (envelope-from ) id 1MVrAA-00009K-R3 for grub-devel@gnu.org; Tue, 28 Jul 2009 20:12:34 +0200 Date: Tue, 28 Jul 2009 20:12:34 +0200 From: Robert Millan To: The development of GRUB 2 Message-ID: <20090728181234.GI32726@thorin> References: <1248617131.25072.13.camel@fz.local> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1248617131.25072.13.camel@fz.local> Organization: free as in freedom X-Message-Flag: Worried about Outlook viruses? Switch to Thunderbird! www.mozilla.com/thunderbird X-Debbugs-No-Ack: true User-Agent: Mutt/1.5.18 (2008-05-17) X-detected-operating-system: by monty-python.gnu.org: GNU/Linux 2.6 (newer, 3) Subject: Re: [PATCH] use UUID to map system devices to grub devices X-BeenThere: grub-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: The development of GRUB 2 List-Id: The development of GRUB 2 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 28 Jul 2009 21:01:26 -0000 On Sun, Jul 26, 2009 at 04:05:31PM +0200, Felix Zielcke wrote: > As requested by Robert on IRC, this is a split from my dmraid patch. > On dmraid devices HDIO_GETGEO returns 0 for all fields, so the current > way of grub_util_biosdisk_get_grub_dev just can't work. > So I use blkid to get the UUID of the device and then a new nested > function to find out the grub device like search does. > > I think this is with intent from the kernel that it just returns 0's. > Maybe it just can't distinguish between a device mapper setup which goes > over multiple partitions or harddisks of different size not from one > which goes only over complete harddisks with same size like in dmraid > Hm but even if, I think it wouldn't help in case of RAID != 1. Sector > count could be > then last sector of one disk or not? I keep thinking this is an overkill solution. We should to discuss more about what's the problem we need to fix, and only ressort to this if we have no other choice. -- Robert Millan The DRM opt-in fallacy: "Your data belongs to us. We will decide when (and how) you may access your data; but nobody's threatening your freedom: we still allow you to remove your data and not access it at all."