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From: Moshe Yudkowsky <moshe@pobox.com>
To: Peter Rabbitson <rabbit+list@rabbit.us>
Cc: linux-raid@vger.kernel.org
Subject: Re: In this partition scheme, grub does not find md information?
Date: Tue, 29 Jan 2008 09:57:48 -0600	[thread overview]
Message-ID: <479F4CFC.5060305@pobox.com> (raw)
In-Reply-To: <479F3C74.1050605@rabbit.us>

Peter Rabbitson wrote:

> [*] The layout is the same but the functionality is different. If you 
> have 1+0 on 4 drives, you can survive a loss of 2 drives as long as they 
> are part of different mirrors. mdadm -C -l 10 -n 4 -o n2 <drives> 
> however will _NOT_ survive a loss of 2 drives.

In my 4 drive system, I'm clearly not getting 1+0's ability to use grub 
out of the RAID10.  I expect it's because I used 1.2 superblocks (why 
not use the latest, I said, foolishly...) and therefore the RAID10 -- 
with even number of drives -- can't be read by grub. If you'd patch that 
information into the man pages that'd be very useful indeed.

Thanks for your attention to this!

-- 
Moshe Yudkowsky * moshe@pobox.com * www.pobox.com/~moshe
  "no user serviceable parts below this line"
    				-- From a Perl program by mengwong@pobox.com

  parent reply	other threads:[~2008-01-29 15:57 UTC|newest]

Thread overview: 60+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-01-29  4:44 In this partition scheme, grub does not find md information? Moshe Yudkowsky
2008-01-29  5:08 ` Neil Brown
2008-01-29 11:02   ` Moshe Yudkowsky
2008-01-29 11:14     ` Peter Rabbitson
2008-01-29 11:29       ` Moshe Yudkowsky
2008-01-29 14:09         ` Michael Tokarev
2008-01-29 14:07       ` Michael Tokarev
2008-01-29 14:47         ` Peter Rabbitson
2008-01-29 15:13           ` Michael Tokarev
2008-01-29 15:41             ` Peter Rabbitson
2008-01-29 16:51               ` Michael Tokarev
2008-01-29 17:51                 ` Keld Jørn Simonsen
2008-01-29 16:16             ` Moshe Yudkowsky
2008-01-29 16:34               ` Peter Rabbitson
2008-01-29 19:34                 ` Moshe Yudkowsky
2008-01-29 20:21                   ` Keld Jørn Simonsen
2008-01-29 22:14                     ` Moshe Yudkowsky
2008-01-29 23:45                       ` Bill Davidsen
2008-01-30  0:13                         ` Moshe Yudkowsky
2008-01-30 22:36                           ` Bill Davidsen
2008-01-30  0:17                       ` Keld Jørn Simonsen
2008-01-29 23:44                   ` Bill Davidsen
2008-01-30  0:22                     ` Keld Jørn Simonsen
2008-01-30  0:26                       ` Peter Rabbitson
2008-01-30 22:39                         ` Bill Davidsen
2008-01-30  0:32                       ` Moshe Yudkowsky
2008-01-30  0:53                         ` Keld Jørn Simonsen
2008-01-30  1:00                           ` Moshe Yudkowsky
2008-01-31 14:40                             ` Bill Davidsen
2008-01-30 13:11                   ` Michael Tokarev
2008-01-30 14:10                     ` Moshe Yudkowsky
2008-01-30 14:41                       ` Michael Tokarev
2008-01-31 14:59                       ` Bill Davidsen
2008-02-02 20:17                         ` Bill Davidsen
2008-01-30 12:01                 ` Peter Rabbitson
2008-01-29 16:42               ` Michael Tokarev
2008-01-29 16:26             ` Keld Jørn Simonsen
2008-01-29 16:46               ` Michael Tokarev
2008-01-29 18:01                 ` Keld Jørn Simonsen
2008-01-30 13:37                   ` Michael Tokarev
2008-01-30 14:47                     ` Peter Rabbitson
2008-01-30 15:21                       ` Keld Jørn Simonsen
2008-01-30 15:35                         ` Peter Rabbitson
2008-01-30 15:46                           ` Loop devices to RAID? (was Re: In this partition scheme, grub does not find md information?) Moshe Yudkowsky
2008-01-30 15:56                             ` Tim Southerwood
2008-01-29 15:57           ` Moshe Yudkowsky [this message]
2008-01-29 16:37             ` In this partition scheme, grub does not find md information? Keld Jørn Simonsen
2008-01-29 16:57               ` Michael Tokarev
2008-01-30 11:03             ` David Greaves
2008-01-30 11:44               ` Moshe Yudkowsky
2008-01-30 12:00                 ` WRONG INFO (was Re: In this partition scheme, grub does not find md information?) Peter Rabbitson
2008-01-30 12:41                   ` David Greaves
2008-01-30 13:39                   ` Michael Tokarev
2008-02-04 16:49               ` In this partition scheme, grub does not find md information? John Stoffel
2008-02-04 17:26                 ` Michael Tokarev
2008-01-30 11:03           ` David Greaves
2008-01-29 14:48         ` Keld Jørn Simonsen
2008-01-29 16:00           ` Moshe Yudkowsky
2008-01-29 16:25             ` Peter Rabbitson
2008-01-29 14:04     ` Keld Jørn Simonsen

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