On Thu, Feb 08, 2001 at 21:42:59 +0900, [EMAIL PROTECTED] wrote:
> From: Bernd Walter <[EMAIL PROTECTED]>
> Date: Wed, 7 Feb 2001 17:11:57 +0100
> > On Tue, Feb 06, 2001 at 11:21:12PM +0900, [EMAIL PROTECTED] wrote:
> > > Today I tried with 4.2-RELEASE (sorry not -current) and,
> > > 1. Boot up the 4.2-RELEASE with GENERIC kernel.
> > > 2. Connect MO drive with PC Card SCSI(ncv).
> > > 3. Insert PC Card without medium in the MO drive.
> > > 4. The pccardd automatically run camcontrol rescan.
> > > 5. Message says that da0 is 0MB capacity.
> > > 6. Run fdisk da0
> > > 7. got panic with divided by zero.
> > >
> > > Probably divided by zero is caused at line 737 or 748 in the
> > > scsi_low_action() in cam/scsi/scsi_low.c because of ccg->block_size or
> > > secs_per_cylinder is zero.
>
> I tried with same drive and another SCSI card (ahc0) in
> 4.2-RELEASE. No problem were found. I watched the diffs between da.c
> and od.c. It seems like some fault in scsi_low.c. Hmm, my fault....
>
> Sorry for claiming `da'.
No problem. :)
> By the way, in Japanese users mailing list, some said that `da' does
> not check whether a medium is writerable or not (write
> protected). If you mount a write protected medium with -rw, it will
> lead bad condition when you do umount.
Hmm, can you demonstrate the problem? The write-protect check in the od
driver is one of the things that the da driver doesn't have. I figured it
wouldn't really be necessary, since any attempted writes would be returned
with errors.
Ken
--
Kenneth Merry
[EMAIL PROTECTED]
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