#!/bin/sh

#

# iscsi: log into iSCSI targets

#

# chkconfig: 345 13 89

# description: Logs into iSCSI targets needed at system startup

# Note we should have $network in Required-Start/Stop but we don't because if

# we would require network chkconfig will put us directly after NetworkManager

# when using NM, which will make our see if the network is up test succeed

# while NM is actually still configuring the network. By not requiring network

# chkconfig will use the chkconfig header to determine our start prio, starting

# us after the old network service, but before NM (netfs does this the same).

### BEGIN INIT INFO

# Provides:          iscsi

# Required-Start:    iscsid

# Required-Stop:     iscsid

# Default-Start: 3 4 5

# Default-Stop: 0 1 2 6

# Short-Description: Starts and stops login and scanning of iSCSI devices.

# Description: iscsi provides the iSCSI state machine for software iscsi/iser

#              and partial offloaded hardware. iscsi logs into and scans

#              for iSCSI devices, and shuts them down when stopped.

### END INIT INFO

# Source function library.

. /etc/rc.d/init.d/functions

exec="/sbin/iscsiadm"

prog="iscsi"

config="/etc/iscsi/initiatorname.iscsi"

lockfile=/var/lock/subsys/$prog

iscsid_lockfile=/var/lock/subsys/${prog}_iscsid

start() {

    [ -x $exec ] || exit 5

    [ -f $config ] || exit 6

    # if the network isn't up yet exit cleanly, NetworkManager will call us

    # again when the network is up

    [ ! -f /var/lock/subsys/network -a ! -f /var/lock/subsys/NetworkManager ] && exit 0

    # if no nodes are setup to startup automatically exit cleanly

    grep -qrs "node.startup = automatic" /var/lib/iscsi/nodes

    [ $? -eq 0 ] || exit 0

    # this script is normally called from startup so log into

    # nodes marked node.startup=automatic

    echo -n $"Starting $prog: "

    $exec -m node --loginall=automatic 2>&1 > /dev/null | grep iscsiadm

    # <sigh> iscsiadm does not always give a non 0 exit status in case of

    # error so we grep for any messages to stderr and see those as errors too

    if [ ${PIPESTATUS[0]} -ne 0 -o ${PIPESTATUS[1]} -eq 0 ]; then

        failure $"Starting $prog"

        echo

        return 1

    fi

    success $"Starting $prog"

    touch $lockfile

    echo

    return 0

}

stop() {

    echo -n $"Stopping $prog: "

    $exec -m node --logoutall=automatic 2>&1 > /dev/null | grep iscsiadm

    # <sigh> iscsiadm does not always give a non 0 exit status in case of

    # error so we grep for any messages to stderr and see those as errors too

    if [ ${PIPESTATUS[0]} -ne 0 -o ${PIPESTATUS[1]} -eq 0 ]; then

        failure $"Stopping $prog"

        echo

        return 1

    fi

    success $"Stopping $prog"

    rm -f $lockfile

    echo

    return 0

}

restart() {

    stop

    start

}

reload() {

    return 3

}

force_reload() {

    restart

}

rh_status() {

    [ -f $lockfile ] || return 3

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

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

        # no sessions

        return 2

    fi

    return 0

}

rh_status_q() {

    rh_status >/dev/null 2>&1

}

case "$1" in

    start)

        rh_status_q && exit 0

        $1

        ;;

    stop)

        rh_status_q || exit 0

        $1

        ;;

    restart)

        $1

        ;;

    reload)

        rh_status_q || exit 7

        $1

        ;;

    force-reload)

        force_reload

        ;;

    status)

        rh_status

        ;;

    condrestart|try-restart)

        rh_status_q || exit 0

        restart

        ;;

    *)

        echo $"Usage: $0

{start|stop|status|restart|condrestart|try-restart|reload|force-reload}"

        exit 2

esac

exit $?