SANYALnet Labs | Save State of VirtualBox Virtual Machines on APC UPS power loss shutdown by apcupsd Linux Daemon / save-vms-on-ups-power.sh: see https://supratim-sanyal.blogspot.com/2021/09/save-state-of-virtualbox-virtual.html

save-vms-on-ups-power.sh

#!/bin/bash
#
# /root/save-vms-on-ups-power.sh
#
# SEE https://supratim-sanyal.blogspot.com/2021/09/save-state-of-virtualbox-virtual.html
#
# SANYALnet Labs | Supratim Sanyal's Hobbyist Lab
#
# Based on https://ubuntuforums.org/archive/index.php/t-1890848.html
# 

VBOXUSER="localuser"
# ---

export PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin"
SU="sudo -H -u ${VBOXUSER}"
###RUNNINGVMS=$(${SU} vboxmanage --nologo list vms | sed -e 's/^".*".*{\(.*\)}/\1/')
RUNNINGVMS=$(${SU} vboxmanage --nologo list runningvms | sed -e 's/^".*".*{\(.*\)}/\1/')

# Exit if no VMs are running
if [[ ${RUNNINGVMS} = "" ]]; then
	echo -e "$0 $(date): No VirtualBox VMs are running.\a"
	exit 0
fi

function getVMName()
{ echo $(${SU} vboxmanage --nologo list vms | grep "$1" | awk -F\" '{print $(NF -1)}'); }

echo "$0 $(date): List of running VMs:"
echo ${RUNNINGVMS}

if [[ -n ${RUNNINGVMS} ]]; then
	for VM in ${RUNNINGVMS}; do

		VMNAME=$(getVMName ${VM})
		CURTIME=$(date +"%d%b%Y-%H%M%S.%N")

		echo -e "$0 $(date): Taking snapshot of \"${VMNAME}\""
		wall "$0 $(date): Taking snapshot of \"${VMNAME}\""
		echo "$0 $(date): Doing ${SU} vboxmanage --nologo snapshot ${VM} take UPS-ON-BATTERY-${CURTIME} --description=BEFORE\ UPS\ TRIGGERED\ SAVING\ STATE\ ON\ BATTERY\ AT\ ${CURTIME}"
		${SU} vboxmanage --nologo snapshot ${VM} take UPS-ON-BATTERY-${CURTIME} --description=BEFORE\ UPS\ TRIGGERED\ SAVING\ STATE\ ON\ BATTERY\ AT\ ${CURTIME}
		sync;sync;sync

		echo -e "$0 $(date): Saving state of \"$(getVMName ${VM})\""
		wall "$0 $(date): Saving state of \"$(getVMName ${VM})\""
		echo "$0 $(date): Doing ${SU} vboxmanage --nologo controlvm ${VM} savestate"
		${SU} vboxmanage --nologo controlvm ${VM} savestate
		sync;sync;sync

		echo -e "$0 $(date): UPS STATUS"
		apcaccess status
		echo -e "$0 $(date): VIRTUAL MEMORY STATUS"
		vmstat
		sync;sync;sync

	done
else
	echo -e "$0 $(date): No VirtualBox VMs to save state\a"
fi