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From: Tim Southerwood <ts@dionic.net>
To: Moshe Yudkowsky <moshe@pobox.com>
Cc: Peter Rabbitson <rabbit+list@rabbit.us>, linux-raid@vger.kernel.org
Subject: Re: Loop devices to RAID? (was Re: In this partition scheme, grub does not find md information?)
Date: Wed, 30 Jan 2008 15:56:11 +0000	[thread overview]
Message-ID: <47A09E1B.5070705@dionic.net> (raw)
In-Reply-To: <47A09BBC.1000800@pobox.com>

Moshe Yudkowsky wrote:
> My mind boggles. I know how to mount an ISO as a loop device onto the 
> file system, but if you'd be so kind, can you give a super-brief 
> description on how to get a loop device to look like an actual partition 
> that can be made into a RAID array? I can see this software-only 
> solution as being quite interesting for testing in general.
> 

I tried this a while back, IIRC the procedure was:

1) Make some empty files of the required length each.

2) Use losetup to mount each one onto a loop device (loop0-3 say).

3) Use /dev/loop[0-3] as component devices to mdadm as you would use any 
other device or partition. It is not necessary to partition the loop 
devices, use them whole.

HTH

Tim

  reply	other threads:[~2008-01-30 15:56 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 [this message]
2008-01-29 15:57           ` In this partition scheme, grub does not find md information? Moshe Yudkowsky
2008-01-29 16:37             ` 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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