Re: [rhn-users] usb camera removes second cdrom-R/RW

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Hi Thomas, and thanks for your help, I apreciate it.
I've done som comments.
Thanks

On Mon, 2002-12-16 at 21:11, Thomas Dodd wrote:
> 
> 
> Sandor Suta wrote:
> 
> >Yes!...and what's that?
> >
> The order the devices are found. The USB devices are checked before the 
> ide-scsi driver gets loaded.
> 
> >No the CDROM (CD-R/RW) is not a USB, I think it's using the scsi device.
> >The CDWriter (CD-R/RW) is slave and the DVD-player is master on IDE2.
> >  
> >
> OK, IDE-SCSI. I'm sure that's not loaded untill after USB.
> 
> >Yes it's correct /dev/camera is a suymlink to /dev/sda1
> >  
> >
> >Yes it's correct /dev/cdrom1 is a link to /dev/scd0
> >  
> >
> Good.
> What about /dev/cdrom ? Is it the DVD or the CDR? 
It is the DVD.
You might have got the 
> ide_scsi driver controlling the DVD o and the CDR for a while.
> 
> >OK, I did that and it worked!? Thanks, I dont know but earlier a cdrom2
> >  
> >
> I ment remove the whole line, and let kudzu redetect them.
I think that I have done so, but that didn't help. And I really don't
want to reproduce the error, now when it works without the kudzu option.
The thing that happened was: OK on the first time when I connected the
camera (updfstab added the camera to fstab) And an Error when I
disconnected (updfstab removed the cdrom1-line in fstab). 
There must be a file somewhere on the system that was saved when I first
powered up the computer with the camera connected which changed the
order for the devices or saved the CDR (/dev/scd0) on scsi-bus 1.
> 
> >appered with the same caracteristics as cdrom1 (/dev/scd0) when
> >connecting the camera and disappered when disconnecting...strange but I
> >have done some updating from redhat since then.
> >  
> >
> Because it though something else was cdrom1(scsi-ID 1,0,0) so the new 
> one (scsi-ID 0,0,0) needed a new name and kudzu picked /dev/cdrom2. It 
> pointed to /dev/scd0 because it was still the first SCSI CD.
> 
> >How and what is changeing the order? is this viewable/changeable in any
> >file?
> >
> The IDs are BUS, DEV, LUN. 0(,0,0 ) is the first SCSI bus, device 0, LUN 0.
> If you have the camera plugged in, usb-storage is loaded, and becomes 
> bus 0. Then ide-scsi is loaded and gets bus 1.
> If the camara is NOT plugged (at boot) ide-scsi is loaded and gets bus 
> 0. When you plug the camera in, hotplug loads the usb-storage module, 
> and it gets assigened SCSI bus 1.
> 
> I thing there are some kernel parameters that you can put in grub.conf 
> or lilo.conf to change that, but I don't know what they are.
> Ask on the usb -users list 
> (http://linux-usb.sourceforge.net/mailing.html) for help in forcing 
> usb-storage to use SCSI bus 1, and ide-storage to use bus 0.
> 
> Then kudzu won't see the CDR or camera on a different SCSI bus.
> 
>     -Thomas
> 
> 
> 
> 
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