Re: how to use udev

[Jon Smirl <jonsmirl@yahoo.com>]

udev won't work if sysfs isn't mounted. from fstab...
none                    /sys                    sysfs   defaults        0 0

Does your sysfs directory have a class directory?
under the various classes do they have dev attributes?
For example: /sys/class/tty/console/dev

Without these dev entries udev won't work. They should be automatically
generated by the device drivers.

--- Roman Duka <rduka@mail.ru> wrote:
> > If you go into the test directory, after installing udev, and run the
> > test.all script as root with the 'add' paramater:
> > 	test.all add
> > 
> > Do you see new nodes show up in /udev?
> > 
> > If not, something is not installed properly.
> > 
> > If there are nodes, great, it's working :)
> > 
> 
> No Greg I don't get anything in /udev the script calls udev and there 
> are no error messages or anything, however /udev is still empty I need 
> to ask you a few questions:
> - I compiled udev on Linux running kenel 2.4.20, however I am trying to 
> get udev working on kernel 2.6.0 which has support for hot-pluggable 
> devices and module loading/unloading enabled. I don't think I need to be 
> running kernel 2.6.0 in order to just compile udev, am I correct here??
> - I didn't switch my system to kernel 2.6.0 and udev, I am trying to 
> test it within initrd (Initial Ram Disk), so what I have is a 
> subdirectory in my home directory, where I installed busybox, bash, 
> insmod, modprobe, hotplug scripts and udev, plus the needed shared 
> libraries in /lib. Note I installed udev with the following command 
> "make DESTDIR=mydir install" i.e. I didn't use "prefix" so all the 
> config files etc should be relative to the root directory, and I've 
> checked them, they're fine. I created a initrd and put it on a CD-RW 
> disk and that's what I am booting from and testing udev. My question is, 
> does running udev withing initrd make any impact on its operations? May 
> be the reason why it doesn't work for me is because it has some issues 
> in initrd environment???
> 
> If nothing else, what else do you think could be wrong??
> 
> 
> 
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==Jon Smirl
jonsmirl@yahoo.com

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