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Date: Sat, 27 Apr 2002 01:47:14 +0800 (SGT)
From: Jeff Chua <jeffchua@silk.corp.fedex.com>
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To: Alexander Viro <viro@math.psu.edu>
cc: Pavel Machek <pavel@ucw.cz>, Michael Dreher <dreher@math.tu-freiberg.de>,
        Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: 2.4.19-pre7: rootfs mounted twice
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On Fri, 26 Apr 2002, Alexander Viro wrote:

>
>
> On Fri, 26 Apr 2002, Pavel Machek wrote:
>
> > > does statfs("/", &buf); for both.  Surprise, surprise, results of
> > > two calls of statf2(2) are identical - what with arguments being
> > > the same both times - and refer to the filesystem where your "/"
> > > lives.  I.e. to ext3.
> >
> > df might be wrong, but lets say that this /proc/mounts become
> > interesting. This could not have happened in the past. That means you
>
> This _could_ happen in past - as the matter of fact, I can reproduce it
> on any 2.4 kernel.  Mount something over the root of already mounted
> filesystem and watch the show.
>
> Now, we could disable showing rootfs in /proc/mounts and it might be a
> good idea for 2.4,  I'm not all that sure that it's a right thing, though.


This happens all the time if you use initrd ramdisk and switch to hard
disk during boot up.

2.4.19-pre6 is ok, but 2.4.19-pre7 is not.

Jeff.



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