Description of problem:

After upgrading my machine from FC3 to FC4, I found that the udevd process 
would no longer run.

I am running a 2.6.12 without module support. This setup worked prior to FC4.

After investigating this for some time. I have found the following.

With when I boot FC4 with a modular kernel, /proc/sys/kernel/hotplug is 
set to /sbin/udevsend and udevd runs ok.

If I boot with a non modular kernel, /proc/sys/kernel/hotplug is to
/sbin/hotplug and after the system has booted, the udevd process is 
not running. 

If I add the following line:

sysctl -w kernel.hotplug="/sbin/udevsend" >/dev/null 2>&1

after:

# Initialize hardware
if [ -f /proc/sys/kernel/modprobe ]; then
   if ! strstr "$cmdline" nomodules && [ -f /proc/modules ] ; then
       sysctl -w kernel.modprobe="/sbin/modprobe" >/dev/null 2>&1
       sysctl -w kernel.hotplug="/sbin/udevsend" >/dev/null 2>&1
   else
       # We used to set this to NULL, but that causes 'failed to exec' messages"
       sysctl -w kernel.modprobe="/bin/true" >/dev/null 2>&1
       sysctl -w kernel.hotplug="/bin/true" >/dev/null 2>&1
   fi
fi

in /etc/rc.d/rc.sysinit this allows udevd to work on a non modular kernel.


Version-Release number of selected component (if applicable):


How reproducible:

Always.

Steps to Reproduce:
1. Boot a kernel without modules support
2.
3.
  
Actual results:

The udevd process is not running. 

Expected results:

The udevd process to be running.

Additional info:

Just let me know if you need any more.

Cheers,

Andrew Clayton