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Re: SCSI emulation for IDE CD-writer



I used to compile ide-scsi as modules and had problems with the CD-RW-Drive locking closed <ie: no way to eject with software or the button>.

Since compiling the modules into the kernel, there have been no lock problems.

Shawn Lamson wrote:
On Sun, 29 Dec 2002 20:12:48 -0500
Shawn Lamson <shawn.lamson@verizon.net> wrote:


On Sun, 29 Dec 2002 11:27:38 -0800 (PST)
Bill Moseley <moseley@hank.org> wrote:


On Mon, 30 Dec 2002, Rob Weir wrote:


On Sat, Dec 28, 2002 at 11:33:10AM -0800, Bill Moseley wrote:

Another question:  I have everything compiled into the kernel
instead of as modules.  I have two IDE drives and I'm *not*
using the append line, yet the drives are still setup correctly
as SCSI.

Why don't I need the append= line?

AIUI, if you have ide-cd and ide-scsi (and sr_mod) compiled into
the kernel, ide-scsi will win and take everything.  I compile all
the ide-scsi (and scsi) stuff as modules, because it's possible to
play with them without a reboot.

Ah, I see.

My assumption was wrong then.  I thought that the append= in lilo
was to pass things into compiled-in code, where modules loaded with
insmod could be passed in settings when they were being loaded.

But does that mean that if you only want one drive to be ide-scsi
that you need to use modules?

Well thankfully we both have working cdwriters , I too have everything
compiled into the kernel... I also use the append line as so:
kernel = /boot/vmlinuz-2.4.20 noapic nosmp root=/dev/hda12
hdc=ide-scsi pci=biosirq vga=normal

but I have heard that people had problems with scsi grabbing normal
(cd?) drives and having to add :ide-cd ignore=hdx

presumably b/c the ide-cd will grab before the scsi - which is
actually the opposite of what Mr. Weir said.  I don't really know
which is true.


P.S. I forgot to mention I have: CONFIG_BLK_DEV_IDECD=y
# Old CD-ROM drivers (not SCSI, not IDE)
# CONFIG_CD_NO_IDESCSI is not set

in my kernel... it takes signifigantly longer for my machine to "mount"
and "seek" (for example changing songs on an audio disk - obviously
unmounted) when using the scsi mode as opposed to just idecd on the same
drive.  I don't know if anyone can account for this or offer a solution.


I got so tired of configuring modules that I gave up and just put all
in the kernel - even though I think I could get more "control" of
things with modules (ie. my soundblaster live! 5.1)...

Shawn







--
Bill Moseley moseley@hank.org


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--
Shawn Lamson
shawn.lamson@verizon.net
Debian GNU/Linux 3.0


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