The module provides base and helper functions for powering off or rebooting a machine under test.



Need to kill ssh connection with backends like ipmi, spvm, pvm_hmc, s390x.

For s390_zkvm or xen, assign console($vnc_console) with disable_vnc_stalls and assign console('svirt') with stop_serial_grab.

$vnc_console get required variable 'SVIRT_VNC_CONSOLE' before assignment.



Reboot from Gnome Desktop and handle authentification scenarios during shutdown.

Run prepare_system_shutdown if shutdown needs authentification.


Power off desktop.

Handle each desktop differently for kde, gnome, xfce, lxde, lxqt, enlightenment, awesome, mate, minimalx.

Work around issue with CD-ROM pop-up: bsc#1137230 and make sure that s390 SUT shutdown correctly.



Handle a potential failure on a live CD related to boo#993885 that the reboot action from a desktop session does not work and we are stuck on the desktop.


 power_action($action [,observe => $observe] [,keepconsole => $keepconsole] [,textmode => $textmode]);

Executes the selected power action (e.g. poweroff, reboot).

If $observe is set, the function expects that the specified $action was already executed by another actor and the function just makes sure the system shuts down, restarts etc. properly.

$keepconsole prevents a console change, which we do by default to make sure that a system with a GUI desktop which was in text console at the time of power_action call, is switched to the expected console, that is 'root-console' for textmode, 'x11' otherwise. The actual execution happens in a shell for textmode or with GUI commands otherwise unless explicitly overridden by setting $textmode to either 0 or 1.


 assert_shutdown_and_restore_system($action, $shutdown_timeout);

VNC connection to SUT (the 'sut' console) is terminated on Xen via svirt backend and we have to re-connect *after* the restart, otherwise we end up with stalled VNC connection. The tricky part is to know *when* the system is already booting.

Default $action is reboot, $shutdown_timeout is timeout for shutdown, default value is 60 seconds.



 $args = {[timeout => $timeout] [,soft_timeout => $soft_timeout] [,bugref => $bugref] [,soft_failure_reason => $soft_failure_reason]}

Extending assert_shutdown with a soft timeout. When $args-{soft_timeout}> is reached, a soft failure is recorded with the message $args-{soft_failure_reason}>.

After that, assert_shutdown continues until the (hard) timeout $args-{timeout}> is hit.

This makes sense when a shutdown sporadically takes longer then it normally should take and the proper statistics of such cases should be gathered instead of just increasing a timeout.

If $args-{soft_timeout}> is not specified, then the default assert_shutdown is executed.


 assert_shutdown_with_soft_timeout({timeout => 300, soft_timeout => 60, bugref => 'bsc#123456'});