From owner-freebsd-current  Fri Oct  4 17:40:13 2002
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Date: Fri, 4 Oct 2002 17:26:07 -0700 (PDT)
From: Julian Elischer <julian@elischer.org>
To: Robert Watson <rwatson@FreeBSD.ORG>
Cc: Terry Lambert <tlambert2@mindspring.com>,
	Emiel Kollof <coolvibe@hackerheaven.org>,
	Peter Wemm <peter@wemm.org>,
	Poul-Henning Kamp <phk@critter.freebsd.dk>,
	n0go013 <ttz@blahdeblah.demon.co.uk>,
	current <freebsd-current@FreeBSD.ORG>
Subject: Re: [ GEOM tests ] disklabel warnings and vinum drives lost
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On Fri, 4 Oct 2002, Robert Watson wrote:

> On the general topic of access to devices before a root has been found,
> Maxime Henrion <mux@FreeBSD.org> has done some interesting work on
> 'rootfs', a pseudofs used to bootstrap support for devfs, etc.  In such an
> environment, Vinum and other consumers of devices would be able to rely on
> devfs access prior to the "real root" mount process.  I'm not sure which
> pivotroot-like trick he's using, or whether he's doing the union thing to
> do the root re-mount.  Presumably he has to be careful not to deadfs the
> devfs nodes in place before the real root turns up, etc. 

The original devfs supported access from within the kernel before
mounting root and devfs..
It's not rocket science.



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