Re: Still Having Fun with SCSI Emulation.

["Willem van der Walt<vdwaltw@health.gov.za>" <vdwaltw@health.gov.za>]

Hi,
May be this is werth a try:
If cdrecord -scanbus now works, you should see your drive.
My cdrecord is working when  i use 
cdrecord -dev=0,0,0 --data x.iso
hth
Willem

On Mon, 14 Jan 2002, Martin G. McCormick wrote:

> 	I made a lot of progress and what I found may help some
> people so here it is as briefly as I can make it.
> 
> 	First, I will sound like a politician here and say that
> everybody was right to some extent on configuring SCSI emulation
> in the kernel.  My big mistake was in compiling in SCSI disk
> support.  This killed the CDROM SCSI emulation.  When I took out
> the SCSI disk support, the SCSI channel appeared.
> 
> 	I still had terrible problems with cdda2wav and
> cdparanoia and they both did the same thing.
> 
> 	Both tried to work using /dev/scd0 as the scsi device,
> but the system groaned and sputtered and the audio was full of a
> wraspy sound which was basically a break in the sound about 75
> times per second.  This is the sector rate, but you shouldn't
> hear it.  I ran cdparanoia for 20 or 30 minutes once and it
> didn't even rip one song completely.
> 
> 	Since I now had SCSI emulation, I decided to install the
> Plextor CDRW drive.  I guess the other drive is simply not
> capable of CDDA playback because the system now can download an
> entire CD in 7 minutes flawlessly with perfect audio just like it
> is supposed to.
> 
> 	Both cdda2wav and cdparanoia now seem to work perfectly
> but I seem to still be snatching defeat from the jaws of victory.
> 
> 	It was time to burn a CDRW disk with a file system so I
> put in a brand new CDRW which was included with the drive as a
> sample.
> I got mkisofs to produce a mountable image so the last step was
> to feed that to cdrecord.  I used the following command.
> 
> mkisofs -l -R -q /home/martin |cdrecord -dev=/dev/scd0:0,0 -dummy -
> 
> 	I held my breath and got the following error which was
> the first error I had seen using the new drive:
> 
> cdrecord: Cannot do inquiry for CD/DVD-Recorder.
> cdrecord: Success. test unit ready: scsi sendcmd: fatal error
> Cdrecord 1.8 (i686-pc-linux-gnu) Copyright (C) 1995-2000 Jörg Schilling
> scsidev: '/dev/scd0:0,0'
> devname: '/dev/scd0'
> scsibus: 0 target: 0 lun: 0
> Using libscg version 'schily-0.1'
> CDB:  00 00 00 00 00 00
> cmd finished after 0.000s timeout 40s
> 
> 	The order of the output lines from cdrecord is a little
> different than they normally display, but I captured standard
> error and standard output and they don't arrive at the same time.
> If I use cdparanoia and test the drive, I get good output
> 
> cdparanoia III release 9.7 (December 13, 1999)
> (C) 1999 Monty <monty@xiph.org> and Xiphophorus
> 
> Checking /dev/sg0 for cdrom...
> 	Testing /dev/sg0 for cooked ioctl() interface
> 		/dev/sg0 is not a cooked ioctl CDROM.
> 	Testing /dev/sg0 for SCSI interface
> 		generic device: /dev/sg0
> 		ioctl device: /dev/scd0
> 		CDROM sensed: PLEXTOR CD-R   PX-W1210A 1.08 
> 
> Checking for SCSI emulation and transport revision...
> 	Drive is ATAPI (using SCSI host adaptor emulation)
> 
> Checking for MMC style command set...
> 	Drive is MMC style
> 004: Unable to read table of contents header
> 
> Unable to open disc.  Is there an audio CD in the drive?
> 
> 	That last part about the audio CD is due to there being
> the new CDRW which had not yet been recorded yet.  If I put an
> audio CD in, it reads the table of contents just fine.
> 
> 	Has anybody any ideas as to what this last nasty problem
> is?
> 
> 	By the way, if you compile the SCSI emulation support in
> to the kernel, the append statements in lilo.conf don't seem to
> do anything.  That probably is necessary to make the module load,
> but I tried it with and without and nothing changed.
> 
> 	Thanks to Janina and all for your good suggestions.  You
> have kept me beating my head on this brick wall until I have made
> a dent at least.  I'm still not all the way through, yet.
> Martin McCormick
> 
> 
> 
> _______________________________________________
> Blinux-list mailing list
> Blinux-list@redhat.com
> https://listman.redhat.com/mailman/listinfo/blinux-list
>