On Sat, Jun 20, 2015 at 5:26 PM, Thomas Meyer <tho...@m3y3r.de> wrote:
> Hi, > > Is it possible to bind a key combination in systemd to perform a switch > into emergency mode or another target? > > And would this key binding also work in situations where the system is > under heavy cpu load and heavy swapping? > Sort of. There's a single key combination (Alt+ArrowUp by default) which maps to kbrequest.target, though it only works on the console and not within Xorg & the likes. You can pull in emergency.target via that. Also don't forget the magic SysRq keys – Alt+SysRq+F will run the OOM killer in case of heavy swapping, Alt+SysRq+E/I will sigterm/sigkill all programs (systemd will restart gettys afterwards), and Alt+SysRq+N will renice high-priority processes. You need to enable this via sysctl.conf though. -- Mantas Mikulėnas <graw...@gmail.com>
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