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SubjectRe: kmod or ppa problem?
On Wed, 24 Mar 1999, Cody Pisto wrote:

> I seem to be having a problem with kmod. I compiled the ppa driver
> as a module (parallel port zip drive) and accompanying parallel port
> drivers as modules. I added "alias block-major-8 ppa" and "alias
> parport_lowlevel parport_pc" to /etc/conf.modules.
> This works as it should the first time I use the zip drive. 'mount /zip'
> causes kmod to call modprobe and load the respective modules. When im
Okay, good. Can we see the output of /sbin/lsmod here, and /proc/devices?

> done using the drive I 'umount /zip', some time later, again as it
> should, kmod unloads the modules. This is where my problem begins.
Whoa, hold on - kmod does not get involved in module removal (since about
2.1.10x) - check Documentation/kmod.txt - if you're not running something
in the background like the appropriate cron job, you're not removing
modules.

Anyway, can we also get the output of /sbin/lsmod here, and the output of
cat /proc/devices

> 'mount /zip' instead of causing kmod to load the modules, produces
> "mount: /dev/sda4 is not a valid block device". 'lsmod' proves that the
> modules have not been loaded. 'modprobe ppa' does as expected and loads
> the correct modules, 'mount /zip' works. I can not get kmod to
> automatically handle the ppa module and dependencies, until I reboot. It
> works once then not again. I honestly have no clue what could cause
> this. Any ideas would be greatly appreciated.

Looking at the setup of my machine, I think I may see the problem -
block-major-8 is the scsi-disk device. If you have unloaded ppa, but have
not unloaded sd, then I could see this problem arising.

I have a couple of ideas of approaches to fixing the problem, but I'd like
to hear what the output requested above looks like.

Good luck,

Greg Zornetzer - gaz+@andrew.cmu.edu
"Light shines brightest in the darkest night"
http://www.contrib.andrew.cmu.edu/~gaz



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