IDE-SCSI grabs too many drives

IDE-SCSI grabs too many drives

[Andrew S. Johnson]

I have append="hdc=ide-scsi" in my lilo.conf file,
but when I modprobe ide-scsi, it grabs both the
CD-RW and the DVD-ROM:

SCSI subsystem driver Revision: 1.00
scsi0 : SCSI host adapter emulation for IDE ATAPI devices
   Vendor: HP        Model: CD-Writer+ 9100   Rev: 1.0c
   Type:   CD-ROM                             ANSI SCSI revision: 02
   Vendor: RAITE     Model: RDR-108H          Rev: 1.7
   Type:   CD-ROM                             ANSI SCSI revision: 02

Shouldn't it just make only hdc a SCSI drive?

If I unload ide-scsi and modprobe ide-cd instead, I get this:

hdc: ATAPI 32X CD-ROM CD-R/RW drive, 4096kB Cache, UDMA(33)
hdd: ATAPI 40X DVD-ROM drive, 256kB Cache, UDMA(33)

Of course, I can't burn CD's with this configuration.

I want the CD-RW as a SCSI drive, and the DVD-ROM as an IDE drive.

For some reason, mplayer only works when the DVD-ROM is an IDE
device.  If I try to use the SCSI equivalent, it hangs.

So, how do I get hdc as a SCSI drive, and hdd as an IDE drive?

Any and all help will be appreciated.

Andy Johnson

Re: IDE-SCSI grabs too many drives

[J.A. Magallon]

On 2003.01.04 Andrew S. Johnson wrote:
> I have append="hdc=ide-scsi" in my lilo.conf file,
> but when I modprobe ide-scsi, it grabs both the
> CD-RW and the DVD-ROM:
> 

I think the correct param is "hdc=scsi", with incorrect param and no
ide-cd loaded, probably ide-scsi grabs anything it can...

-- 
J.A. Magallon <jamagallon@able.es>      \                 Software is like sex:
werewolf.able.es                         \           It's better when it's free
Mandrake Linux release 9.1 (Cooker) for i586
Linux 2.4.21-pre2-jam2 (gcc 3.2.1 (Mandrake Linux 9.1 3.2.1-2mdk))

Re: IDE-SCSI grabs too many drives

[Andrew S. Johnson]

J.A. Magallon wrote:
> On 2003.01.04 Andrew S. Johnson wrote:
> 
>>I have append="hdc=ide-scsi" in my lilo.conf file,
>>but when I modprobe ide-scsi, it grabs both the
>>CD-RW and the DVD-ROM:
>>
> 
> 
> I think the correct param is "hdc=scsi", with incorrect param and no
> ide-cd loaded, probably ide-scsi grabs anything it can...
> 

Actually, I guessed on my own, and this solves it:

append="hdc=ide-scsi hdd=ide-cd" in lilo.conf

In rc.modules:

/sbin/modprobe ide-scsi
/sbin/modprobe ide-cd

Gives this in dmesg:

SCSI subsystem driver Revision: 1.00
scsi0 : SCSI host adapter emulation for IDE ATAPI devices
   Vendor: HP        Model: CD-Writer+ 9100   Rev: 1.0c
   Type:   CD-ROM                             ANSI SCSI revision: 02
hdd: ATAPI 40X DVD-ROM drive, 256kB Cache, UDMA(33)

I don't actually know if the hdd=ide-cd does anything for the ide-cd
module, other than keep the ide-scsi module from grabbing it.  Does
anyone know?

Thanks,

Andy Johnson

Re: IDE-SCSI grabs too many drives

[Andrew S. Johnson]

J.A. Magallon wrote:
> On 2003.01.04 Andrew S. Johnson wrote:
> 
>>I have append="hdc=ide-scsi" in my lilo.conf file,
>>but when I modprobe ide-scsi, it grabs both the
>>CD-RW and the DVD-ROM:
>>
> 
> 
> I think the correct param is "hdc=scsi", with incorrect param and no
> ide-cd loaded, probably ide-scsi grabs anything it can...
> 

Actually, I guessed on my own, and this solves it:

append="hdc=ide-scsi hdd=ide-cd" in lilo.conf

In rc.modules:

/sbin/modprobe ide-scsi
/sbin/modprobe ide-cd

Gives this in dmesg:

SCSI subsystem driver Revision: 1.00
scsi0 : SCSI host adapter emulation for IDE ATAPI devices
   Vendor: HP        Model: CD-Writer+ 9100   Rev: 1.0c
   Type:   CD-ROM                             ANSI SCSI revision: 02
hdd: ATAPI 40X DVD-ROM drive, 256kB Cache, UDMA(33)

I don't actually know if the hdd=ide-cd does anything for the ide-cd
module, other than keep the ide-scsi module from grabbing it. 
Conversely, the ide-cd module only grabs hdd even when the ide-scsi
module is not loaded (making hdc free).  So it appears to do something.

As it turns out, the latest version of cdrtools (2.0) supports ATAPI 
drives directly.  I tested this by burning an ISO, reading it back, and 
comparing the md5sums.  So the whole ide-scsi exersice looks to be
academic at this point.

Have fun,

Andy Johnson