problems with Mandrake 10.0 + kernel 2.6.8-rc2

problems with Mandrake 10.0 + kernel 2.6.8-rc2

[bil]

Hi,
I've recently moved to Mandrake 10.0 (prompted by a defunct hard disk
which neccesitated a complete re-install) and have had several problems.
As a result I have upgraded my kernel from 2.6.3 to 2.6.7 and then 2.6.8-rc2.
Unfortunately the fire may be hotter than the frying-pan (Old English
Proverb) and I'm now in a state where I can't mount CDroms. I can
read the raw device OK, so the basic driver (ide-cd) is OK, or at least
it seems to be. I've added traces to isofs.ko and established that this
initialises OK, but when I attempt to mount the driver it gets a return
code of -EINVAL when it tries to read the superblock (get_sb_bdev?()).

I'm pretty sure that this must be something set up wrong somewhere as
it's unlikely that 2.6.7 (or 2.6.8) would be released without someone
somewhere needing to mount a cdrom, but I have no idea where to go from
here. I am not a kernel-hacker, though I did some many moons ago, but
I know enough to patch and rebuild modules and test them. I took a look at
the source code of ide-cd.c but can't make much sense of the way things are
done these days, and have too many other things to do....
Can anyone give me advice (or even better a fix)?

I'd appreciate being CC'd on any response as I'm not on the
kernel mailing list (too many others to wade through).

Many thanks,

Bill
-- 
+-----------------------------------------------+
| Bill Purvis, thrice-retired software engineer |
| e-mail:  bil@beeb.net                         |
| web:     bil.members.beeb.net                 |
+-----------------------------------------------+

Re: problems with Mandrake 10.0 + kernel 2.6.8-rc2

[Jens Axboe]

On Fri, Aug 06 2004, bil@beeb.net wrote:
> Hi,
> I've recently moved to Mandrake 10.0 (prompted by a defunct hard disk
> which neccesitated a complete re-install) and have had several problems.
> As a result I have upgraded my kernel from 2.6.3 to 2.6.7 and then 2.6.8-rc2.
> Unfortunately the fire may be hotter than the frying-pan (Old English
> Proverb) and I'm now in a state where I can't mount CDroms. I can
> read the raw device OK, so the basic driver (ide-cd) is OK, or at least
> it seems to be. I've added traces to isofs.ko and established that this
> initialises OK, but when I attempt to mount the driver it gets a return
> code of -EINVAL when it tries to read the superblock (get_sb_bdev?()).
> 
> I'm pretty sure that this must be something set up wrong somewhere as
> it's unlikely that 2.6.7 (or 2.6.8) would be released without someone
> somewhere needing to mount a cdrom, but I have no idea where to go from
> here. I am not a kernel-hacker, though I did some many moons ago, but
> I know enough to patch and rebuild modules and test them. I took a look at
> the source code of ide-cd.c but can't make much sense of the way things are
> done these days, and have too many other things to do....
> Can anyone give me advice (or even better a fix)?

First step in bug reporting is including a step-by-step way to reproduce
(ie what you do when it fails). Also please include a dmesg -s100000
from a booted system, and your .config from 2.6.7.

-- 
Jens Axboe

Re: problems with Mandrake 10.0 + kernel 2.6.8-rc2

[bil]

Mathieu,
On Friday 06 Aug 2004 16:27, you wrote:
> odd....
> can you try removing the umask=0 option ?
> does 'mount -t iso9660 -o ro /dev/hdc /mnt/cdrom' fail too ?
Interesting - that's fixed it. I would not have believed that that
could cause my problems. Why on earth would Mandrake put it in if
it does that!?

Thanks for the advice, 
much appreciated,
Bill
-- 
+-----------------------------------------------+
| Bill Purvis, thrice-retired software engineer |
| e-mail:  bil@beeb.net                         |
| web:     bil.members.beeb.net                 |
+-----------------------------------------------+