Reload loader.conf

[usakhncit]

Hi
If I change any value in /boot/loader.conf then is it necessary to reboot system? Or can the value (or loader.conf) be reloaded without rebooting?
Thanks

 

[SirDice]

That file is loaded and parsed by loader(8). The only time it gets executed is during the boot phase.

 

[usakhncit]

So, is there any other way to load new values on the fly, like:
hw.psm.elantech.min_pressure="45"

 

[SirDice]

Those are sysctl(8) and shouldn't go in loader.conf but /etc/sysctl.conf. Most sysctl(8) [*] can be changed on the fly: sysctl hw.psm.elantech.min_pressure="45".

[*] Some are read-only and some can only be set before the kernel is loaded. Those need to go in loader.conf.

 

[usakhncit]

When I put these values in /etc/sysctl.conf, system gives error:
sysctl: Tuneable values are set in /boot/loader.conf

 

[SirDice]

Bugger, this is one of those sysctls that need to be set before boot. So it does need to go in loader.conf.

 

[olli@]

The easiest way to reload /boot/loader.conf is the command shutdown -r now.

 

[George]

How about kenv (1), instead of sysctl?

kenv hw.psm.elantech.min_pressure=45

 

[olli@]

How about kenv (1), instead of sysctl?

kenv hw.psm.elantech.min_pressure=45

You cannot change read-only tunables once the kernel has booted. Even if the value is changed in the environment, the new value is not picked up by the driver.