linux-kernel - Re: [PATCH] Modify loop device to be able to manage partitions of the disk image

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Message-ID: <e2e108260803070408l4600ae4cx1ecd261318cb63c6@mail.gmail.com>
Date:	Fri, 7 Mar 2008 13:08:20 +0100
From:	"Bart Van Assche" <bart.vanassche@...il.com>
To:	7eggert@....de
Cc:	"Nick Piggin" <nickpiggin@...oo.com.au>,
	"Laurent Vivier" <Laurent.Vivier@...l.net>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Modify loop device to be able to manage partitions of the disk image

On Fri, Mar 7, 2008 at 12:56 PM, Bodo Eggert <7eggert@....de> wrote:
> Nick Piggin <nickpiggin@...oo.com.au> wrote:
>  > On Thursday 06 March 2008 21:16, Laurent Vivier wrote:
>  >> Le jeudi 06 mars 2008 à 20:57 +1100, Nick Piggin a écrit :
>
>  >> > Do you think we do something similar for drivers/block/brd.c too? I'd
>  >> > like to try to maintain parity between them where possible...
>  >>
>  >> I think it is possible  (I've the same patch for NBD too), but I think
>  >> it is completely useless.
>  >
>  > It's useful for testing, and for minimising the divergence in the
>  > code.
>
>  Maybe there should be a common mechanism to use partitions on any block
>  device. Maybe there is - I have dark memories about the device mapper
>  being able to parse partition tables, and plans on moving partition
>  support to userspace.

It's easy to add partition support to the loopback device. A patch
that realizes this was already published in 2004. See also
http://lwn.net/Articles/110426/.

Bart Van Assche.
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