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README.Gentoo

Usage

=====



Do

 $ man 8 kexec

for full understanding of the underlying kexec command.

Gentoo offers a wrapper to the bare kexec command through

/etc/init.d/kexec.



Configuration

-------------



Configuration is done in /etc/conf.d/kexec, which is self-documented.



Usage

-----



In Gentoo, kexec is invoked, i.e., the new kernel will be booted when

rebooting, by reboot (8) command or by pressing Ctrl+Alt+Del.



If you want to use kexec once, just run

 $ /etc/init.d/kexec start



It'll reserve kexec call at reboot. Later on, you can reboot anytime,

letting kexec starts another (or the same) kernel. When all is done in

the runlevel 6 - killing processes, unmounting volumes, etc - kexec

starts the new kernel instead of doing the normal hardware reboot.



If you want kexec to be run every time you reboot, add it to a runlevel:

 $ rc-update add kexec <runlevel>



If you want to reboot in the normal way this time, do:

 $ touch /nokexec