multipathd/multipathd.init.suse

#! /bin/sh
# Copyright (c) 1995-2001 SuSE GmbH Nuernberg, Germany.
#
# Author: Hannes Reinecke <feedback@suse.de>
#
# init.d/multipathd
#
### BEGIN INIT INFO
# Provides:          multipathd
# Required-Start:    $syslog
# Required-Stop:     $syslog
# Default-Start:     3 5
# Default-Stop:	     0 1 2 4 6
# Short-Description: Starts multipath daemon
# Description:       Starts the multipath daemon
### END INIT INFO

PATH=/bin:/usr/bin:/sbin:/usr/sbin
DAEMON=/sbin/multipathd
PIDFILE=/var/run/multipathd.pid
MPATH_INIT_TIMEOUT=10
ARGS=""

# Set the maximum number of open files
MAX_OPEN_FDS=4096

# Set to enable asynchronous daemon startup
DAEMON_ASYNC_STARTUP=

test -x $DAEMON || exit 5

. /etc/rc.status

# First reset status of this service
rc_reset

case "$1" in
    start)
	echo -n "Starting multipathd"
	ulimit -c unlimited
	if $DAEMON -k"reset log" > /dev/null 2>&1 ; then
	    echo -n " (multipathd running)"
	    rc_status -v
	    rc_exit
	fi

	modprobe dm-multipath

	# Set the maximum number of open files
	if [ -n "$MAX_OPEN_FDS" ] ; then
	    ulimit -n $MAX_OPEN_FDS
	fi

	$DAEMON $ARGS

	if [ -n "$DAEMON_ASYNC_STARTUP" ] ; then
	    rc_status -v
	    rc_exit
	fi
	# Wait for the daemon to start up
	status=$($DAEMON -k'show daemon' 2> /dev/null)
	timeout=$MPATH_INIT_TIMEOUT
	while [ $timeout -gt 0 ] ; do
	    if [ -n "$status" ] ; then
		PID=${status##pid }
		STATUS=${PID##* }
		# Configuration might be taking some time,
		# so don't increase the timeout here
		[ "$STATUS" != "configure" ] && timeout=$(( $timeout - 1 ))

		[ "$STATUS" == "running" ] && break
	    else
		timeout=$(( $timeout - 1 ))
	    fi
	    sleep 1
	    status=$($DAEMON -k'show daemon' 2> /dev/null)
	done
	if [ -z "$status" ] ; then
	    rc_failed 7
	fi
	if [ $timeout -le 0 ] ; then
	    rc_failed 1
	fi
	# Remember status and be verbose
	rc_status -v
	;;
    stop)
	echo -n "Shutting down multipathd"
	STATUS="unknown"
	# Try to get PID from daemon
	status=$($DAEMON -k'show daemon' 2> /dev/null)
	if [ -n "$status" ] ; then
	    PID=${status##pid }
	    STATUS=${PID##* }
	    PID=${PID%% *}
	fi
	# Fallback to PID file for older versions
	if [ -z "$PID" ] || [ "$PID" == "multipath-tools" ] ; then
	    if [ -f $PIDFILE ]; then
		PID="$(cat $PIDFILE)"
		STATUS="running"
	    else
		rc_failed 7
		rc_status -v
		rc_exit
	    fi
	fi
	# Shutdown the daemon via CLI
	if [ "$STATUS" = "running" ] ; then
	    status=$($DAEMON -k'shutdown' 2> /dev/null)
	    if [ "$status" = "ok" ] ; then
		timeout=$MPATH_INIT_TIMEOUT
		while [ $timeout -gt 0 ] ; do
		    PROCNAME="$(ps -p $PID -o comm=)"
		    if [ "$PROCNAME" != "multipathd" ] &&
			[ "$PROCNAME" != "multipathd <defunct>" ] ; then
			STATUS="shutdown"
			break
		    fi
		    sleep 1
		    timeout=$(( $timeout - 1 ))
		done
	    fi
	fi
	# Kill the daemon if the above failed
	if [ -n "$PID" -a "$STATUS" != "shutdown" ] ; then
	    kill -TERM $PID
	    timeout=$MPATH_INIT_TIMEOUT
	    while [ $timeout -gt 0 ] ; do
		PROCNAME="$(ps -p $PID -o comm=)"
		if [ "$PROCNAME" != "multipathd" ] &&
		    [ "$PROCNAME" != "multipathd <defunct>" ] ; then
		    STATUS="shutdown"
		    break
		fi
		sleep 1
		timeout=$(( $timeout - 1 ))
	    done
	fi
	if [ $STATUS != "shutdown" ] ; then
	    echo -n " (still running)"
	    rc_failed 1
	fi

	# Remember status and be verbose
	rc_status -v
	;;
    try-restart)
	## Stop the service and if this succeeds (i.e. the 
	## service was running before), start it again.
        $0 status >/dev/null &&  $0 restart

	# Remember status and be quiet
	rc_status
	;;
    restart|force-reload)
	## Stop the service and regardless of whether it was
	## running or not, start it again.
	$0 stop
	$0 start

	# Remember status and be quiet
	rc_status
	;;
    reload)
	## Like force-reload, but if daemon does not support
	## signalling, do nothing (!)

	$DAEMON -k"reconfigure" > /dev/null 2>&1

	# Remember status and be quiet
	rc_status
	;;
    status)
	echo -n "Checking for multipathd: "

	# Status has a slightly different for the status command:
	# 0 - service running
	# 1 - service dead, but /var/run/  pid  file exists
	# 2 - service dead, but /var/lock/ lock file exists
	# 3 - service not running

	status=$($DAEMON -k'show daemon' 2> /dev/null)
	if [ -n "$status" ]; then
	        (exit 0)
	else
		(exit 3)
	fi
	rc_status -v
	;;
    probe)
	## Optional: Probe for the necessity of a reload,
	## give out the argument which is required for a reload.
	;;
    *)
	echo "Usage: $0 {start|stop|status|try-restart|restart|force-reload|reload|probe}"
	exit 1
	;;
esac
rc_exit