Re: ittle problems with /dev/sr0 with 2.4.19-rc1

[Tony Spinillo <tspinillo@yahoo.com>]

I think I also hit this. Kernel 2.4.19-rc1-ac3. I tried the
-no-pad option. I also tried readcd dev=2,0,0 f=/test.iso,
that failed also.

The latest cdrdao seems to read and make good copies though.

from /var/log/messages:
Jul 13 07:50:14 251 kernel: scsi2: ERROR on channel 0, id 0, lun

0,CDB: Request Sense 00 00 00 40 00
Jul 13 07:50:14 251 kernel: Info fld=0x50698 (nonstd), Current
sd0b:00: sense key Medium Error
Jul 13 07:50:14 251 kernel: Additional sense indicates 
Unrecovered read error

I will test later with some other media, a different build
of cdrecord, and I will run a cleaner through the drive.

Thanks,

Tony



>>On Sun Jul 07, 2002 at 06:07:44AM -0400, Christian Robert
wrote:
>> [root@X-home:/btemp] # md5sum /dev/sr0
>> md5sum: /dev/sr0: Input/output error         <- oups, it 
failed
>> 
>> [root@X-home:/btemp] # dd if=/dev/sr0 | md5sum
>> dd: reading `/dev/sr0': Input/output error   <- failed here
too
>> 13440+0 records in
>> 13440+0 records out
>> 5ec08b6fa7bf09741d1310e5baa800de  - <- but md5sum is 
>OK

>Looks like a read ahead bug to me...  Out of curiousity,
>did you use "-no-pad" with mkisofs?

> -Erik

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