initd.redhat

iscsi企业级target.很好用

#!/bin/sh
#
# chkconfig: - 39 35
# description: Starts and stops the iSCSI target
#
# pidfile: /var/run/ietd.pid
# config:  /etc/ietd.conf

# Source function library.
if [ -f /etc/init.d/functions ] ; then
  . /etc/init.d/functions
elif [ -f /etc/rc.d/init.d/functions ] ; then
  . /etc/rc.d/init.d/functions
else
  exit 0
fi

PATH=/sbin:/bin:/usr/sbin:/usr/bin
MEM_SIZE=1048576

configure_memsize()
{
    if [ -e /proc/sys/net/core/wmem_max ]; then
        echo ${MEM_SIZE} > /proc/sys/net/core/wmem_max
    fi

    if [ -e /proc/sys/net/core/rmem_max ]; then
        echo ${MEM_SIZE} > /proc/sys/net/core/rmem_max
    fi

    if [ -e /proc/sys/net/core/wmem_default ]; then
        echo ${MEM_SIZE} > /proc/sys/net/core/wmem_default
    fi

    if [ -e /proc/sys/net/core/rmem_default ]; then
        echo ${MEM_SIZE} > /proc/sys/net/core/rmem_default
    fi

    if [ -e /proc/sys/net/ipv4/tcp_mem ]; then
        echo "${MEM_SIZE} ${MEM_SIZE} ${MEM_SIZE}" > /proc/sys/net/ipv4/tcp_mem
    fi

    if [ -e  /proc/sys/net/ipv4/tcp_rmem ]; then
        echo "${MEM_SIZE} ${MEM_SIZE} ${MEM_SIZE}" > /proc/sys/net/ipv4/tcp_rmem
    fi

    if [ -e /proc/sys/net/ipv4/tcp_wmem ]; then
        echo "${MEM_SIZE} ${MEM_SIZE} ${MEM_SIZE}" > /proc/sys/net/ipv4/tcp_wmem
    fi
}

RETVAL=0

start()
{
	echo -n "Starting iSCSI target service: "
	configure_memsize
	modprobe -q crc32c
	modprobe iscsi_trgt
	daemon /usr/sbin/ietd
	RETVAL=$?
	echo
	return $RETVAL
}
	
stop()
{	echo -n "Stoping iSCSI target service: "
	ietadm --op delete >/dev/null 2>/dev/null
	killall ietd 2> /dev/null
	modprobe -r iscsi_trgt 2>/dev/null
	RETVAL=$?
	modprobe -r crc32c 2>/dev/null
	if [ $RETVAL == "0" ]; then
		echo_success
	else
		echo_failure
	fi
	echo
	return $RETVAL
}

restart()
{
        stop
        start
}

status()
{
	PID=`pidofproc ietd`
	if [ ! $PID ]; then
		echo "iSCSI target stopped"
		exit 1
	else
		echo "ietd (pid $PID) is running..."
	fi	
}

case "$1" in
  start)
        start
        ;;
  stop)
        stop
        ;;
  restart)
        restart
        ;;
  status)
        status
        ;;
  *)
        echo $"Usage: $0 {start|stop|restart|status}"
        exit 1
esac

exit 0