init.d script for qemu instances

qemu_init (text/plain), 3.05 KB, created by master_volkov on 2012-02-27 15:35:10 UTC

#!/sbin/runscript
# Copyright 2012 volkov av
# Distributed under the terms of the GNU General Public License v2

extra_commands="create_image first_start"

INSTANCENAME=${SVCNAME#*-}
CONFINSTNAME=$(shell_var "${INSTANCENAME}")

QEMU_PID="/var/run/qemu-${INSTANCENAME}.pid"

depend() {
	need net.br0 vde
}

first_start() {
	BOOT_FROM_D=" -boot d "
	start
}


_load_config()
{

	source /etc/conf.d/qemu

	# set -- ${config}
	# eval domain=\$dns_domain
	#eval modset=\$/etc/conf.d/qemu
	#echo $modset

	inst_image_dir=${imagedir:-"/home/qemu-image/"}

	eval inst_memory=\$${CONFINSTNAME}_memory
	[ -z "${inst_memory}" ] && eval inst_memory=\$memory
	if [ -z "${inst_memory}" ] ; then
		inst_memory=" -m 512 "
	else
		inst_memory=" -m ${inst_memory} "
	fi

	eval inst_vnc=\$${CONFINSTNAME}_vnc
	[ -z "${inst_vnc}" ] && eval inst_vnc=\$vnc
	if [ -z "${inst_vnc}" ] ; then 
		inst_vnc=" "
	else
		inst_vnc=" -vnc :${inst_vnc} "
	fi

	eval inst_net=\$${CONFINSTNAME}_net
	if [ -z "${inst_net}" ] ; then 
		inst_net=" "
	else
		inst_net=" ${inst_net} "
	fi

	eval inst_cpu=\$${CONFINSTNAME}_cpu
	[ -z "${inst_cpu}" ] && eval inst_cpu=\$cpu
	if [ -z "${inst_cpu}" ] ; then 
		inst_cpu=" "
	else
		inst_cpu=" -cpu ${inst_cpu} "
	fi

	eval inst_smp=\$${CONFINSTNAME}_smp
	[ -z "${inst_smp}" ] && eval inst_smp=\$smp
	if [ -z "${inst_smp}" ] ; then 
		inst_smp=" "
	else
		inst_smp=" -smp ${inst_smp} "
	fi

	eval inst_drive=\$${CONFINSTNAME}_drive
	if [ -z "${inst_drive}" ] ; then 
		inst_drive=" "
	else
		inst_drive=" ${inst_drive} "
	fi

	eval inst_kvm=\$${CONFINSTNAME}_kvm
	[ -z "${inst_kvm}" ] && eval inst_kvm=\$kvm
	if [ -z "${inst_kvm}" ] ; then
		inst_kvm=" "
	else
		if [ "${inst_kvm}" == "no" ] ; then 
			inst_kvm=" -no-kvm "
		else 
			inst_kvm=" -enable-kvm "
		fi
	fi

	eval inst_opt=\$${CONFINSTNAME}_opt
	[ -z "${inst_opt}" ] && eval inst_opt=\$opt
	if [ -z "${inst_opt}" ] ; then 
		inst_opt=" "
	else
		inst_opt=" ${inst_opt} "
	fi

	eval inst_qemu=\$${CONFINSTNAME}_qemu
	[ -z "${inst_qemu}" ] && eval inst_qemu=\$qemu
	if [ -z "${inst_qemu}" ] ; then 
		inst_qemu="/usr/bin/qemu-kvm"
	else
		inst_qemu="${inst_qemu}"
	fi
	QEMU_OPTS="${BOOT_FROM_D}${inst_net}${inst_vnc}${inst_opt}${inst_memory}${inst_smp}${inst_drive}${inst_kvm}${inst_cpu} -daemonize -pidfile $QEMU_PID"
}

create_image() {
	_load_config
	ebegin "Creating qemu image for ${INSTANCENAME}"
	einfo "Create is: create -f qcow2 ${inst_image_dir}/qemu-img-${CONFINSTNAME}.img 10G"
		/usr/bin/qemu-img create -f qcow2 ${inst_image_dir}/qemu-img-${CONFINSTNAME}.img 10G
	eend $? "Failed to creating qemu image for ${INSTANCENAME}"
}


start() {
	ebegin "Start Qemu - ${INSTANCENAME}"

	_load_config

#	start-stop-daemon --start --exec "${EXEC_QEMU}" \
#		--pidfile "${QEMU_PID}" \
#		-- "${QEMU_OPTS}"
    start-stop-daemon --start --exec ${inst_qemu} -- ${QEMU_OPTS}
#    start-stop-daemon --start --oknodo --exec $EXEC_QEMU -- ${QEMU_OPTS}

	eend $? "Failed to start Qemu - ${INSTANCENAME}"
}

stop() {
	ebegin "Stop Qemu - ${INSTANCENAME}"

	start-stop-daemon --stop --pidfile $QEMU_PID
	
	eend $? "Failed to stop Qemu - ${INSTANCENAME}"
}


# vim:ts=4