iSCSI : Configure Target (targetcli)2019/07/17

#!/bin/bash

### BEGIN INIT INFO
# Provides:             rtslib-fb-targetctl
# Required-Start:       $network $local_fs $remote_fs $syslog
# Required-Stop:        $local_fs $network $remote_fs
# Default-Start:        2 3 4 5
# Default-Stop:         0 1 6
# Short-Description:    Start LIO targets
# Description:          Loads configfs and restores LIO config with targetctl
### END INIT INFO

# Author: Thomas Goirand <zigo@debian.org>

PATH=/sbin:/usr/sbin:/bin:/usr/bin
DESC="rstlib-fb targetctl"
NAME=targetctl
DAEMON=/usr/bin/${NAME}
PIDFILE=/var/run/$NAME.pid
SCRIPTNAME=/etc/init.d/rtslib-fb-targetctl
SYSTEM_USER=trove

[ -x $DAEMON ] || exit 0

. /lib/lsb/init-functions

check_configfs_module () {
        if ! modprobe configfs ; then
                echo "Could not load configfs module: exiting!"
                exit 0
        fi
        sleep 10
}

check_configfs_mounted () {
        WORD_TO_GREP_IN_PROCMOUNT=configfs
        NUM_RETRY=50
        while ! cat /proc/mounts | grep -q ${WORD_TO_GREP_IN_PROCMOUNT} && [ "${NUM_RETRY}" != 0 ] ; do
                NUM_RETRY=$(( $NUM_RETRY - 1 ))
                sleep 0.1
        done

        if ! cat /proc/mounts | grep -q ${WORD_TO_GREP_IN_PROCMOUNT} ; then
                echo " ${WORD_TO_GREP_IN_PROCMOUNT} not found in /proc/mount: exiting!"
                exit 0
        fi
}

case "$1" in
start)
        check_configfs_module
        check_configfs_mounted
        log_daemon_msg "Loading $DESC" "$NAME"
        ${DAEMON} restore
        if [ $? -gt 0 ] ; then
                log_end_msg 1
                exit 1
        fi
        log_end_msg 0
;;
stop)
        check_configfs_module
        log_daemon_msg "Unloading $DESC" "${NAME}"
        ${DAEMON} clear
        if [ $? -gt 0 ] ; then
                log_end_msg 1
                exit 1
        fi
        log_end_msg 0
;;
restart|reload|force-reload)
        $0 stop
        sleep 3
        $0 start
;;
status)
        echo "Not supported!"
        exit 1
;;
*)
        echo "usage: $SCRIPTNAME {start|stop|restart|reload|force-reload}"
        exit 1
;;
esac

exit 0