chshut - change the shutdown actions for Linux on System z
TRIGGER ACTION [VM Command]
to configure the Linux on System z shutdown actions.
The tool handles up to three parameters. The first parameter specifies the
shutdown trigger. A shutdown trigger is an event that will stop Linux. The
following shutdown triggers are supported: "halt", "poff",
and "reboot". There are two other shutdown triggers
"panic" and "restart" that are controlled by the
(8) service script.
The second parameter specifies the shutdown action that you want to run if the
specified trigger occurs. Valid action arguments are "ipl",
"reipl", "stop", and "vmcmd".
If you have chosen "vmcmd" as action, a third parameter is required
for the CP command you want to execute under z/VM.
VM CP commands, device addresses, and guest names must be
- -h or --help
- Print help information, then exit.
- -v or --version
- Print version information, then exit.
Log off the z/VM guest if the Linux poweroff
(8) command was executed
# chshut poff vmcmd LOGOFF
If the system is halted it should start again:
# chshut halt ipl
If the Linux poweroff
(8) command is executed, send a message to guest
MASTER and automatically log off the guest:
# chshut poff vmcmd "MSG MASTER Going down" vmcmd
For most Linux distributions, "halt" is mapped by default to
"power off". In this case you have to use the shutdown trigger
"poff" instead of "halt".