Troubles with SCSI LUNS (IDE CD-RW with SCSI emulation)

["Francisco M. Marzoa Alonso" <fmmarzoa@gmx.net>]

Hi there,

My name's Francisco; I've been using LiNUX since years ago, but not a Debian 
distribution (I've tested a Debian 1.3.1 it years ago also but I drop it as 
soon as dselect appeared on stage...). Now I've decide to try it again and, 
in general, I like it a lot :-D

Well, and now my first little big trouble...

I've a Sony CD-RW CRX1611 that I've been using until yesterday below SuSE 
7.3. In SuSE, I must dissable its DMA and use max_scsi_luns=1 on lilo.conf 
append because both, cd-writer (/dev/hdc) and cd-rom (/dev/hdd) are detected 
as if they have two luns each one. I've the same trouble under Debian, but 
max_scsi_luns that resolve this on SuSE did NOT work in Debian... This is the 
lilo append line:

append="max_scsi_luns=1 hdc=ide-scsi hdd=ide-scsi"

Of course, I've exec lilo after changes, reboot the system and these 
things... Take a look at boot messages:

[...]

Kernel command line: auto BOOT_IMAGE=Linux ro root=302 max_scsi_luns=1 
hdc=ide-scsi hdd=ide-scsi

[...]

SCSI subsystem driver Revision: 1.00
scsi0 : SCSI host adapter emulation for IDE ATAPI devices
  Vendor: SONY      Model: CD-RW CRX1611     Rev: TYS7
  Type:   CD-ROM                             ANSI SCSI revision: 02
  Vendor: SONY      Model: CD-RW CRX1611     Rev: TYS7
  Type:   CD-ROM                             ANSI SCSI revision: 02
  Vendor: TOSHIBA   Model: CD-ROM XM-6402B   Rev: 1008
  Type:   CD-ROM                             ANSI SCSI revision: 02
  Vendor: TOSHIBA   Model: CD-ROM XM-6402B   Rev: 1008
  Type:   CD-ROM

[...]

It seems like max_scsi_luns has no effect... :-/

I'm using woody, with 2.4.16-686 kernel.

More related information:

crom:~# cdrecord -scanbus
Cdrecord 1.10 (i686-pc-linux-gnu) Copyright (C) 1995-2001 Jörg Schilling
Linux sg driver version: 3.1.20
Using libscg version 'schily-0.5'
scsibus0:
        0,0,0     0) 'SONY    ' 'CD-RW CRX1611   ' 'TYS7' Removable CD-ROM
        0,1,0     1) 'TOSHIBA ' 'CD-ROM XM-6402B ' '1008' Removable CD-ROM
        0,2,0     2) *
        0,3,0     3) *
        0,4,0     4) *
        0,5,0     5) *
        0,6,0     6) *
        0,7,0     7) *
crom:~# lsmod | grep scsi
ide-scsi                7392   0 
scsi_mod               84824   2  [sg ide-scsi]
ide-mod               129452   3  (autoclean) [ide-scsi ide-disk 
ide-probe-mod]
crom:~#

Does anyone know what can I do with this?

TIA