From: Daniel Reurich <daniel@centurion.net.nz>
To: Dan Williams <dan.j.williams@intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>,
Goswin von Brederlow <goswin-v-b@web.de>,
linux-raid@vger.kernel.org
Subject: Re: md extension to support booting from raid whole disks.
Date: Wed, 29 Apr 2009 10:19:12 +1200 [thread overview]
Message-ID: <1240957153.18303.689.camel@ezra> (raw)
In-Reply-To: <e9c3a7c20904281124g4682d70cp22760176e7a8cfbc@mail.gmail.com>
On Tue, 2009-04-28 at 11:24 -0700, Dan Williams wrote:
>
> ...or use a metadata format that your platform bios understands and
> provides an int 13h vector. See the new external metadata formats
> supported by the mdadm devel-3.0 branch.
I don't think a metadata format is the right way either.
What we need is a new version of the superblock with the first cylinder
(32kb on 512b sectors x64 sectors per cylinder) being set aside for the
bootloader, the superblock and w-i bitmap go in the second cylinder, and
the raid data area starting in the 3rd cylinder.
It should be the bootloaders responsibility to install the bootloader
onto the disks 1st cylinder, but md/mdadm would have to replicate it on
resync or adding of a new disk. However we could consider remapping the
bootloader
--
Daniel Reurich
Centurion Computer Technology (2005) Ltd
Ph 021 797 722
next prev parent reply other threads:[~2009-04-28 22:19 UTC|newest]
Thread overview: 76+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-24 12:08 md extension to support booting from raid whole disks Daniel Reurich
2009-04-27 15:08 ` Goswin von Brederlow
2009-04-28 4:58 ` H. Peter Anvin
2009-04-28 6:26 ` Luca Berra
2009-04-28 9:35 ` Goswin von Brederlow
2009-04-28 11:21 ` Daniel Reurich
2009-04-28 17:36 ` H. Peter Anvin
2009-04-28 22:23 ` Daniel Reurich
2009-04-28 23:30 ` H. Peter Anvin
2009-04-29 0:02 ` Daniel Reurich
2009-04-29 11:32 ` John Robinson
2009-04-28 18:24 ` Dan Williams
2009-04-28 22:19 ` Daniel Reurich [this message]
2009-04-28 22:26 ` Dan Williams
2009-05-01 21:04 ` Goswin von Brederlow
2009-05-01 21:24 ` Dan Williams
2009-05-01 22:33 ` Goswin von Brederlow
2009-05-02 12:07 ` John Robinson
2009-05-04 17:02 ` Goswin von Brederlow
2009-05-05 9:31 ` Michal Soltys
2009-04-28 23:05 ` Neil Brown
2009-04-28 23:20 ` H. Peter Anvin
2009-04-29 0:00 ` Daniel Reurich
2009-04-29 0:04 ` H. Peter Anvin
2009-04-29 0:20 ` Daniel Reurich
2009-04-29 0:28 ` H. Peter Anvin
2009-04-29 0:43 ` Daniel Reurich
2009-04-29 6:43 ` Gabor Gombas
2009-05-01 21:10 ` Goswin von Brederlow
2009-05-01 22:36 ` Rudy Zijlstra
2009-05-02 1:04 ` Daniel Reurich
2009-05-02 17:02 ` Michał Przyłuski
2009-05-03 1:33 ` Leslie Rhorer
2009-05-03 4:25 ` NeilBrown
2009-05-03 18:05 ` Leslie Rhorer
2009-05-04 3:04 ` Daniel Reurich
2009-05-08 21:50 ` Goswin von Brederlow
2009-05-08 22:16 ` NeilBrown
2009-05-08 22:29 ` Goswin von Brederlow
2009-05-12 5:39 ` Neil Brown
2009-05-12 19:44 ` Daniel Reurich
2009-05-13 11:12 ` Neil Brown
2009-05-14 2:21 ` Daniel Reurich
2009-05-15 16:13 ` H. Peter Anvin
2009-05-13 12:15 ` Bill Davidsen
2009-05-08 22:06 ` Goswin von Brederlow
2009-05-09 7:20 ` Peter Rabbitson
2009-05-10 1:29 ` Goswin von Brederlow
[not found] ` <87presxwu4.fsf@frosties.localdomain>
[not found] ` <1241219902.9516.6.camel@poledra.romunt.nl>
[not found] ` <87bpq8n6ym.fsf@frosties.localdomain>
2009-05-04 20:57 ` Rudy Zijlstra
2009-05-04 22:33 ` Daniel Reurich
2009-05-05 0:26 ` John Robinson
2009-05-05 9:03 ` Keld Jørn Simonsen
2009-05-08 21:18 ` Goswin von Brederlow
2009-04-29 22:43 ` md extension to support booting from raid whole disks, raid6, grub2, lvm2 Michael Ole Olsen
2009-05-01 21:36 ` Goswin von Brederlow
2009-04-29 7:45 ` md extension to support booting from raid whole disks Luca Berra
2009-04-29 16:55 ` H. Peter Anvin
2009-04-29 20:38 ` Luca Berra
2009-04-30 6:59 ` Gabor Gombas
2009-04-30 8:11 ` Luca Berra
2009-04-30 13:01 ` John Robinson
2009-04-28 23:41 ` Daniel Reurich
2009-04-29 0:01 ` H. Peter Anvin
2009-05-01 21:33 ` Goswin von Brederlow
2009-04-28 7:08 ` Daniel Reurich
2009-04-28 23:07 ` Neil Brown
2009-04-28 23:21 ` Daniel Reurich
2009-04-28 23:37 ` H. Peter Anvin
2009-04-29 0:05 ` Daniel Reurich
2009-04-29 0:06 ` H. Peter Anvin
2009-04-29 0:36 ` Daniel Reurich
2009-04-29 0:44 ` H. Peter Anvin
[not found] ` <1240968482.18303.1028.camel@ezra>
[not found] ` <49F7B162.8060301@zytor.com>
2009-04-29 2:08 ` Daniel Reurich
2009-04-29 2:33 ` H. Peter Anvin
2009-04-30 2:41 ` Daniel Reurich
2009-04-29 7:07 ` Gabor Gombas
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