linux-kernel - Re: [PATCH] Driver Core: devtmpfs - kernel-maintained tmpfs-based /dev

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Date:	Mon, 10 Aug 2009 10:04:09 +0100
From:	Scott James Remnant <scott@...ntu.com>
To:	David Dillow <dave@...dillows.org>
Cc:	Andi Kleen <andi@...stfloor.org>, Greg KH <greg@...ah.com>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	linux-kernel@...r.kernel.org, Kay Sievers <kay.sievers@...y.org>,
	Jan Blunck <jblunck@...e.de>, gregkh@...e.de,
	Harald Hoyer <harald@...hat.com>
Subject: Re: [PATCH] Driver Core: devtmpfs - kernel-maintained tmpfs-based
 /dev

On Thu, 2009-08-06 at 12:20 -0400, David Dillow wrote:

> On Thu, 2009-08-06 at 17:46 +0200, Andi Kleen wrote:
> > Greg KH <greg@...ah.com> writes:
> > >
> > > It makes the userspace boot process much simpler and easier to maintain,
> > > as well as providing a way to handle rescue disks and images trivially,
> > > and it makes the kernel _less_ dependant on the early userspace bootup
> > > scripts.
> > 
> > As a initrd less kernel user I can really only agree: getting rid
> > of the udev-in-initrd requirement would be a big step forward
> > in usability. Typically I always have to pre populate 
> > a on disk /dev manually first to get my kernels to boot.
> 
> If you use mount by label or UUID, you still need udev (or other tools)
> in the initrd to find the right disk, correct? And for distros that want
> to support that, does this really reduce the amount of code in the
> initrd?
> 
Distros would be then free to experiment with just running "blkid" in
the initramfs to find the root filesystem, rather than the udev daemon
(which runs blkid itself)

Scott
-- 
Scott James Remnant
scott@...ntu.com

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