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SubjectRe: 2.6.20-rc6 libata PATA ATAPI CDROM is not working
Hello Tejun,

Sorry for delay but I was a bit busy this week.

Tejun Heo wrote:
> Hello, Joel.
>
> Joel Soete wrote:
>> A small update:
>> your patch also works against 2.6.20
>
> Glad to hear that.
>
>> but seems that open the door to numerous other pb:
>> 1/ pb to burn cd:
>> # md5sum cd060213.iso
>> 6a1248783a21722816b972aa9bae9d5e cd060213.iso
>>
>> # ll cd060213.iso
>> -rwxr-xr-x 1 root root 3213312 Feb 13 2006 cd060213.iso
>>
>> # dd if=/dev/sr0 bs=1 count=3213312 | md5sum
>> dd: reading `/dev/sr0': Input/output error
>> 0337e9846d17779945c5c252d4f897f0 -
>> 3129344+0 records in
>> 3129344+0 records out
>> 3129344 bytes (3.1 MB) copied, 36.6963 seconds, 85.3 kB/s
>>
>> eventhought cdrecord seems to be successfull???
>
> Hmm... 82K difference. Can you burn an iso and md5sum the files
> contained in the image and burned cd?
>
Ok comparing the content of the original image:
# mount -t iso9660 -o ro -o loop /MultiCd/cd060213.iso /mnt/cd
# find /mnt/cd -type f -exec md5sum {} \;
37149d4961c0484f2cceb1a1614b253d /mnt/cd/boot.cat
4ab996554b0e7ade115a3f284b876612 /mnt/cd/boot.msg
fbdc51c29d54dd227427b2ef90e1961e /mnt/cd/initrd.cgz
92c9a50bed71257c29f069ec5dd819fc /mnt/cd/isolinux.bin
927ce1096693b3a44af0e0d8a2ad720c /mnt/cd/isolinux.cfg
4afcf65ff8259a3bccd0cf9f91675529 /mnt/cd/scsi.cgz
4714742585da795c3a69c262ce8c35ef /mnt/cd/vmlinuz

and the content of the burned cd:
# mount /cdrom
# find /cdrom -type f -exec md5sum {} \;
37149d4961c0484f2cceb1a1614b253d /cdrom/boot.cat
4ab996554b0e7ade115a3f284b876612 /cdrom/boot.msg
fbdc51c29d54dd227427b2ef90e1961e /cdrom/initrd.cgz
92c9a50bed71257c29f069ec5dd819fc /cdrom/isolinux.bin
927ce1096693b3a44af0e0d8a2ad720c /cdrom/isolinux.cfg
4afcf65ff8259a3bccd0cf9f91675529 /cdrom/scsi.cgz
4714742585da795c3a69c262ce8c35ef /cdrom/vmlinuz

it seems ok?

What is it lost???


>> 2/ (but that should be much more related to scsi api) sdcXX > sdc15
>> doesn't works ;-(
>> # sfdisk -l /dev/sdc
>>
>> Disk /dev/sdc: 1826 cylinders, 255 heads, 63 sectors/track
>> Units = cylinders of 8225280 bytes, blocks of 1024 bytes, counting from 0
>>
>> Device Boot Start End #cyls #blocks Id System
>> /dev/sdc1 * 0+ 195 196- 1574338+ b W95 FAT32
>> /dev/sdc2 196 1825 1630 13092975 5 Extended
[snip]
>> /dev/sdc23 881+ 1533 653- 5245191 83 Linux
>> /dev/sdc24 1795 1825 31 249007+ 83 Linux
>
> Whee, you have 24 partitions?
yes: it was dated from the early time I was testing various distro to choose one ;-)

> Due to the way SCSI block device numbers
> are laid out, SCSI supports only upto 15 partitions per device.
>
Ah, I never had chance to use a disk array with fc connection on one of my linux boxe, so I don't know how can it works with
up to 255 luns?

Thanks again,
Joel
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