linux-kernel - Re: No /dev/root with devtmpfs?

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Date:	Wed, 08 Feb 2012 09:20:14 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Paul Parsons <lost.distance@...oo.com>
CC:	Kay Sievers <kay.sievers@...y.org>,
	Kirill Smelkov <kirr@....spb.ru>, linux-kernel@...r.kernel.org
Subject: Re: No /dev/root with devtmpfs?

On 02/08/2012 08:44 AM, Paul Parsons wrote:
> 
> Could you simply use /etc/fstab to identify the root partition?
> 

That's not a very good thing, as it is much more likely to be wrong.

It would be a good thing to have the /dev/root symlink *IF* a valid root
device exists (defined as a device node appearing which has the same
device number as reported by stat on the root directory), if nothing
else because we have had one available for a very long time and this is
needless breakage.

Obviously, if such a device doesn't exist (btrfs, NFS, tmpfs) then don't.

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

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