linux-kernel - Re: [uml-devel] [RFC] UML kernel & rootfs bundle with every kernel release ?

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Date:	Tue, 3 Apr 2007 00:44:47 -0400
From:	Jason Lunz <lunz@...ooley.org>
To:	Jeff Dike <jdike@...toit.com>
Cc:	roland <devzero@....de>, Antoine Martin <antoine@...afix.co.uk>,
	Blaisorblade <blaisorblade@...oo.it>,
	user-mode-linux-devel@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org
Subject: Re: [uml-devel] [RFC] UML kernel & rootfs bundle with every kernel release ?

On Mon, Apr 02, 2007 at 05:44:34PM -0400, Jeff Dike wrote:
> There are sites (http://uml.nagafix.co.uk/ being the best one I know
> of) where, with two downloads, two uncompressions, and one command
> line later, you have a booted UML.
> 
> The only way I know of to improve on this, aside from inprovements in
> the booted distro, is to package the filesystem as a rootfs within the
> UML kernel binary.  I've considered this, but haven't done anything
> with it.

I've done the converse: package the uml kernel within the rootfs image,
and use a script that plays the part of bootloader. With ext2 at least,
it's fairly easy to use the debugfs 'cat' command for this.

That way, you simply distribute the fs image with a companion script
that can boot any number of such images.

Jason
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