Date: Fri, 25 Mar 2005 13:49:03 -0800
From: Andrew Morton <akpm@osdl.org>
To: Steven Cole <elenstev@mesatop.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: 2.6.12-rc1-mm3 (cannot read cd-rom, 2.6.12-rc1 is OK)
Message-Id: <20050325134903.6862718f.akpm@osdl.org>
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Steven Cole <elenstev@mesatop.com> wrote:
>
> >>
> >> I found a few more minutes to test two more kernels.  The problem
> >> first occured with 2.6.12-rc1-mm2:
> >>
> >> 2.6.12-rc1     reads the cd-rom OK as reported earlier
> >> 2.6.12-rc1-mm1 also reads the cd-rom OK
> >> 2.6.12-rc1-mm2 broken same as -mm3 described as above
> >> 2.6.12-rc1-mm3 broken as reported earlier
> > 
> > 
> > Are you really really sure about that?  -mm3 included both the bk-ide-dev
> > tree and the isofs changes.  2.6.12-rc1-mm2 had neither.
> > 
> 
> Just to be really really sure, I repeated the tests.  I even checked
> that the image/label combination in /etc/lilo.conf was what I intended,
> but the uname -r should show what's what.
> 
> Same results, -mm2 broken, and -mm1 reads the disk.  I even tried
> other CD's just to make sure I didn't have something weird.  Same results.

OK, thanks.

It would be interesting to copy a CD to hard disk (under -mm1) and see if
it works OK with the loopback driver.

Also, boot into -mm2 and do a `cmp' of the cdrom with the image which is on
hard-disk.

This should help us work out whether it's isofs, the driver, the VFS or
whatever.
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