cdrecord vs k3b: Question on device option

[Peter Weiss]

Hi,

still got trouble setting up cdrecord and k3b running dapper. I've
reduced the problem to the device option of cdrecord. Using

      cdrecord [...] dev=/dev/scd0 [...]

works, but running

      cdrecord [...] dev=1,0,0 [...]

does not. The command I use from k3b output is:

/usr/bin/X11/cdrecord.mmap -v gracetime=2 dev=1,0,0 speed=24 -tao
driveropts=burnfree -eject -data

Which results in the following error

[...]
Starting new track at sector: 0
Track 01:    0 of  640 MB written.
/usr/bin/X11/cdrecord: Input/output error. write_g1: scsi sendcmd: no
error
CDB:  2A 00 00 00 00 D9 00 00 1F 00
status: 0x2 (CHECK CONDITION)
Sense Bytes: 70 00 05 00 00 00 00 10 2A 30 02 80 21 02 00 00
Sense Key: 0x5 Illegal Request, Segment 0
Sense Code: 0x21 Qual 0x02 (invalid address for write) Fru 0x0
Sense flags: Blk 0 (not valid) 
cmd finished after 0.019s timeout 40s
/usr/bin/X11/cdrecord: The current problem looks like a buffer underrun.
/usr/bin/X11/cdrecord: It looks like 'driveropts=burnfree' does not work
for this drive.
/usr/bin/X11/cdrecord: Please report.
/usr/bin/X11/cdrecord: Make sure that you are root, enable DMA and check
your HW/OS set up.
write track data: error after 444416 bytes
[...]

Could someone explain the difference between these 2 types of defining
the
device (I'm no scsi guru, so the manpage didn't help much)?

TIA -- Peter

BTW, checking the difference using "cdrecord -scanbus" reveals :

root at tango:~# cdrecord dev=/dev/scd0 -scanbus >/tmp/a 2>&1
root at tango:~# cdrecord dev=1,0,0 -scanbus >/tmp/b 2>&1

root at tango:~# diff /tmp/a /tmp/b
4,8c4,6
< scsidev: '/dev/scd0'
< devname: '/dev/scd0'
< scsibus: -2 target: -2 lun: -2
< Warning: Open by 'devname' is unintentional and not supported.
< Linux sg driver version: 3.5.27
---
> scsidev: '1,0,0'
> scsibus: 1 target: 0 lun: 0
> Linux sg driver version: 3.5.33

root at tango:~# cd /dev
root at tango:/dev# ls -ald cdrom dvd scd0 sr0
lrwxrwxrwx 1 root root      4 2006-10-12 22:08 cdrom -> scd0
lrwxrwxrwx 1 root root      4 2006-10-12 22:08 dvd -> scd0
brw-rw---- 1 root cdrom 11, 0 2006-10-12 22:08 scd0
lrwxrwxrwx 1 root root      4 2006-10-12 22:08 sr0 -> scd0

-- 
Peter.Weiss at consol.de                         ConSol* Software GmbH
Phone  +49 89 45841-100                       Consulting & Solutions
Mobile +49 177 6040121                        Franziskanerstr. 38
http://www.consol.de                          D-81669 München