new init.d script, now scans /var/lib/sheepdog/disk[0-9]/startup

[pve-sheepdog.git] / debian / pve-sheepdog.sheepdog.init.d

#!/bin/sh
### BEGIN INIT INFO
# Provides:          sheepdog
# Required-Start:    $network $remote_fs $syslog
# Required-Stop:     $network $remote_fs $syslog
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Sheepdog server
# Description:       Sheepdog server
### END INIT INFO

# Author: Proxmox Support Team <support@proxmox.com>

# PATH should only include /usr/* if it runs after the mountnfs.sh script
PATH=/sbin:/usr/sbin:/bin:/usr/bin
DESC="Sheepdog Server"        # Introduce a short description here
NAME=sheepdog                 # Introduce the short server's name here
DAEMON=/usr/sbin/sheep        # Introduce the server's location here
SCRIPTNAME=/etc/init.d/$NAME

# Exit if the package is not installed
[ -x $DAEMON ] || exit 0

DISKLIST=$(echo /var/lib/sheepdog/disc[0123456789])
RDISKLIST=
for dir in ${DISKLIST}; do
    RDISKLIST="${dir} ${RDISKLIST}"
done

# Read configuration variable file if it is present
[ -r /etc/default/$NAME ] && . /etc/default/$NAME

if [ "$START" != "yes" ]; then
        exit 0
fi

. /lib/lsb/init-functions

#
# Function that starts the daemon/service
#
do_start()
{
        mkdir -p /var/run

 	# Return
	#   0 if daemon has been started
	#   1 if daemon was already running
	#   2 if daemon could not be started

	for dir in ${DISKLIST}; do
	    test -f "${dir}/startup" || continue
	    DAEMON_ARGS=$(head -n1 "${dir}/startup");
	    DISKID=${dir##/var/lib/sheepdog/disc}
	    PIDFILE="$dir/sheep.pid"
	    DAEMON_ARGS="${DAEMON_ARGS} --pidfile ${PIDFILE}"
	    if ! test "$(echo ${DAEMON_ARGS}|grep -c '\-p ')" -eq 1 ; then
		DAEMON_ARGS="${DAEMON_ARGS} -p $((7000 + ${DISKID}))"
	    fi

	    status_of_proc -p ${PIDFILE} $DAEMON "$NAME" >/dev/null && continue

	    start-stop-daemon --start --quiet --pidfile ${PIDFILE} --exec $DAEMON -- $DAEMON_ARGS ${dir} || return 2
	    sleep 1
	done

	return 0
}

#
# Function that stops the daemon/service
#
do_stop()
{
	# Return
	#   0 if daemon has been stopped
	#   1 if daemon was already stopped
	#   2 if daemon could not be stopped
	#   other if a failure occurred

	RETVAL=0
	for dir in ${RDISKLIST}; do
	    test -f "${dir}/startup" || continue
	    PIDFILE="$dir/sheep.pid"
	    start-stop-daemon --stop --oknodo --retry=TERM/20/KILL/5 --quiet --pidfile ${PIDFILE} --exec $DAEMON || RETVAL=2
	    sleep 1
	done

	return "$RETVAL"
}

case "$1" in
    start)
	log_daemon_msg "Starting $DESC " "$NAME"
	do_start
	case "$?" in
	    0|1) log_end_msg 0 ;;
	    2) log_end_msg 1 ;;
	esac
	;;
    stop)
	log_daemon_msg "Stopping $DESC" "$NAME"
	do_stop
	case "$?" in
	    0|1) log_end_msg 0 ;;
	    2) log_end_msg 1 ;;
	esac
	
	;;
    status)
	RETVAL=0
	for dir in ${DISKLIST}; do
	    test -f "${dir}/startup" || continue
	    PIDFILE="$dir/sheep.pid"
	    status_of_proc -p ${PIDFILE} $DAEMON "$NAME ${dir}" || RETVAL=1
	done
	exit $RETVAL
	;;
    restart|force-reload)
	log_daemon_msg "Restarting $DESC" "$NAME"
	do_stop
	case "$?" in
	    0|1)
		do_start
		case "$?" in
		    0) log_end_msg 0 ;;
		    1) log_end_msg 1 ;; # Old process is still running
		    *) log_end_msg 1 ;; # Failed to start
		esac
		;;
	    *)
	  	# Failed to stop
		log_end_msg 1
		;;
	esac
	;;
    *)
	echo "Usage: $SCRIPTNAME {start|stop|status|restart|force-reload}" >&2
	exit 3
	;;
esac

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