system_powerdown -- send system power down event
This has an effect similar to the physical power button on a modern PC. The VM will get an ACPI shutdown request and usually shutdown cleanly.
ACPI
VM 쪽에 ACPI 데몬설치 & 구동
# yum-y install acpid
# chkconfig acpid on
# /etc/init.d/acpid start
HOST 장비에서...
# echo 'system_powerdown' | socat - UNIX-CONNECT:/vm1.monitor
