Re: 2.4.19-pre7: rootfs mounted twice

From: Richard B. Johnson (root@chaos.analogic.com)
Date: Fri Apr 26 2002 - 13:50:28 EST


On Sat, 27 Apr 2002, Jeff Chua wrote:

> 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.
>

In 2.4.18, it looks like this when booting initrd and switching
to a hard disk. This looks okay.

/dev/root.old /initrd ext2 rw 0 0
/dev/root / ext2 rw 0 0
/dev/sdc1 /alt ext2 rw 0 0
/dev/sdc3 /home/users ext2 rw 0 0
none /proc proc rw 0 0
/dev/sda1 /dos/drive_C msdos rw 0 0
/dev/sda5 /dos/drive_D msdos rw 0 0

Cheers,
Dick Johnson

Penguin : Linux version 2.4.18 on an i686 machine (797.90 BogoMips).

                 Windows-2000/Professional isn't.

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