Re: packet-writing with Redhat?

Jens Axboe wrote:

On Sun, Sep 24 2000, Glenn wrote:

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I was also able to format a CDRW just fine. My question/problem is in getting the new device to be recognized. I created it:

mknod /dev/pktcdvd0 b 97 0

That looks good

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and verified that it existed after this problem:

# ./pktsetup /dev/pktcdvd0 /dev/scd0 packet open: No such device [root@h000094b6613f /packages/udf/tools]

Is the pktcdvd module loaded?

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I also get this when I tried to mount it, recognizing that this is probably foolish since it didn't set it up, but don't understand the file system not being supported since the module "udf" is installed and active.

# mount -t udf /dev/pktcdvd0 /mnt/cdr mount: fs type udf not supported by kernel [root@h000094b6613f /dev]

And udf is not there, are you sure you booted the right kernel? If both pktcdvd and udf is missing, something smells fishy.

-- * Jens Axboe * SuSE Labs

Thanks for the response,

From my "/lib/modules/2.4.0-test7/modules.dep" file /lib/modules/2.4.0-test7/modules.dep the modules were created OK:

/lib/modules/2.4.0-test7/kernel/drivers/block/pktcdvd.o /lib/modules/2.4.0-test7/kernel/fs/udf/udf.o However if I do a "lsmod" it shows that the modules udf and pktcdvd0 aren't being loaded and I don't have a clue why they aren't So then I do a modprobe for both of them. # modprobe udf [root@h000094b6613f /lib/modules/2.4.0-test7] # modprobe pktcdvd [root@h000094b6613f /lib/modules/2.4.0-test7] # lsmod Module Size Used by pktcdvd 14180 0 cdrom 27452 0 [pktcdvd] <-------- udf 77648 0 (unused) --- snip # ls /dev/pktcdvd0 /dev/pktcdvd0 # cd /packages/udf/tools/ # ./pktsetup /dev/pktcdvd0 scd0 open device: No such file or directory [root@h000094b6613f /packages/udf/tools] I just noticed something from the above. I have a cdrom and a cdr on my machine. Both are IDE devices and I use scsi emulation for the cdr. pktcdvd is using the cdrom and it should be the cdr. Any suggestions? Thanks, Glenn -----