#!/bin/sh

#

# chkconfig: 345 7 89

# description: Starts and stops the iSCSI daemon.

#

# processname: iscsid

# pidfile: /var/run/iscsid.pid

# config:  /etc/iscsi/iscsid.conf

#

### BEGIN INIT INFO

# Provides:          iscsid

# Required-Start:    $network

# Required-Stop:     $network

# Short-Description: Starts and stops login iSCSI daemon.

# Description: iscsid provides the iSCSI session and connection state machine

#              for software iscsi/iser (iscsi_tcp/ib_iser) and partialy

#              offloaded hardware (bnx2i).

### END INIT INFO

#

# Source function library.

. /etc/init.d/functions

PATH=/sbin:/bin:/usr/sbin:/usr/bin

RETVAL=0

start()

{

	if [ -f /var/lock/subsys/iscsid ] ; then

		echo

		success

		return

	fi

	echo -n $"Starting iSCSI daemon: "

	modprobe -q iscsi_tcp

	modprobe -q ib_iser

	daemon iscsid

	RETVAL=$?

	echo

	[ $RETVAL -eq 0 ] || return

	touch /var/lock/subsys/iscsid

	success

	echo

}

stop_iscsid()

{

	killproc iscsid

	echo

        RETVAL=$?

        [ $RETVAL -eq 0 ] && rm -f /var/lock/subsys/iscsid

	modprobe -r ib_iser 2>/dev/null

	modprobe -r iscsi_tcp 2>/dev/null

}

stop()

{

	if [ ! -f /var/lock/subsys/iscsid ]; then

		echo

		success

		return

	fi

	declare -a iparams=( $(iscsiadm -m session 2>/dev/null | egrep "tcp|iser") )

	if [[ -z "${iparams[*]}" ]]; then

		# no sessions so we can just quit

		stop_iscsid

		return

	fi

        # If this is a final shutdown/halt, do nothing since

        # we may need iscsid for as long as possible (halt script kills

	# us at the last second)

        if [ "$RUNLEVEL" = "6" -o "$RUNLEVEL" = "0" -o "$RUNLEVEL" = "1" ]; then

		rm -f /var/lock/subsys/iscsid

                success

                return

        fi

        # don't turn off iscsi if root is possibly on a iscsi disk

        rootopts=$(awk '{ if ($1 !~ /^[ \t]*#/ && $2 == "/") { print $4; }}' /etc/mtab)

        if [[ "$rootopts" =~ "_netdev" ]] ; then

                echo $"Can not shutdown iSCSI. Root is on a iSCSI disk."

                exit 1

        fi

	echo -n $"Stopping iSCSI daemon: "

	stop_iscsid

}

restart()

{

	stop

	start

}

case "$1" in

	start)

		start

		;;

	stop)

		stop

		;;

	restart)

	        stop

		start

		;;

	status)

		status iscsid

		RETVAL=$?

		;;

        condrestart)

	        [ -f /var/lock/subsys/iscsid ] && restart

		;;

	*)

		echo $"Usage: $0 {start|stop|restart|status|condrestart}"

		exit 1

esac

exit $RETVAL