How do you restart a udev rule in Linux?
You have to combine all the advice given here in the right order:
- Bring down the network service networking stop.
- Unload the driver module from the kernel.
- Reload the udev rules udevadm control –reload-rules.
- Trigger the new rules udevadm trigger.
- Load driver modprobe
How do I monitor udev?
To display received kernel events (uevents) and udev events (which udev sends out after rule processing), run udevadm with the monitor command. Then connect a device to your system and watch, from the terminal, how the device event is handled.
Where are udev rules?
Udev rules files are located in the following directories:
- /lib/udev/rules. d/ – The default rules directory.
- /etc/udev/rules. d/ – The custom rules directory. These rules take precedence.
How do I reload the udev rules?
Or you can use the udevadm command: udevadm control –reload-rules. However, beware that different versions of udev have historically had different triggers for reloading the rules automatically. So if in doubt, call udevadm control –reload-rules: it won’t do any harm anyway. The udev rules are only applied when a device is added.
What does restarting udev do?
udev dynamically generates your devices in /dev. If you restart it, it will regenerate them according to its rules. Changes made directly to them are not, generally speaking, persistent. It looks like restarting udev is working fine, but that you just haven’t properly changed the device names.
How do I notify the udev daemon of a change in configuration?
You only need to notify the udev daemon explicitly if you’re doing something unusual, for example if you have a rule that includes files in another directory. Then you can use the usual convention for asking daemons to reload their configuration: send a SIGHUP ( pkill -HUP udevd ). Or you can use the udevadm command: udevadm control –reload-rules.
How to rename a device after udev reload?
You need to reload udev to trigger the rule change, but the device won’t be renamed unless you unload/reload the driver module. So modprobe -r e1000 && modprobe e1000 after udev reload should do the trick.