linux-kernel - File as generic block-device?

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Message-ID: <48FF2304.8070301@dolphinics.no>
Date:	Wed, 22 Oct 2008 14:56:36 +0200
From:	Simen Thoresen <simentt@...phinics.no>
To:	linux-kernel@...r.kernel.org
Subject: File as generic block-device?

Hi all,

I have a project where I require to treat a file as a block-device 
(specifically, I want a file on an ext3 fs to act as one of the 
raid-members in a md-based stripe-set. I know that I can make a 
/filesystem/ on a file because both mkfs and mount (with -o loop) will 
accept a file as a block-device, but I have found no such function for 
mdadm, and am thus asking for a kernel-internal way to re-plug a file 
into the block-device layer.

Is this possible?

My current platform i CentOS5, a RHEL5 rebuild (modified 2.6.18-kernel).

-S
-- 
Simen Thoresen - Dolphin ICS Systems Administrator
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