#!/bin/bash

# -------------------------------------------------------------------------- #
# Copyright 2002-2011, OpenNebula Project Leads (OpenNebula.org)             #
#                                                                            #
# Licensed under the Apache License, Version 2.0 (the "License"); you may    #
# not use this file except in compliance with the License. You may obtain    #
# a copy of the License at                                                   #
#                                                                            #
# http://www.apache.org/licenses/LICENSE-2.0                                 #
#                                                                            #
# Unless required by applicable law or agreed to in writing, software        #
# distributed under the License is distributed on an "AS IS" BASIS,          #
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   #
# See the License for the specific language governing permissions and        #
# limitations under the License.                                             #
#--------------------------------------------------------------------------- #

SRC=$1
DST=$2

if [ -z "${ONE_LOCATION}" ]; then
    TMCOMMON=/usr/lib/one/mads/tm_common.sh
    LVMRC=/etc/one/tm_lvm/tm_lvmrc
else
    TMCOMMON=$ONE_LOCATION/lib/mads/tm_common.sh
    LVMRC=$ONE_LOCATION/etc/tm_lvm/tm_lvmrc
fi

. $TMCOMMON
. $LVMRC

SRC_PATH=`arg_path $SRC`
DST_PATH=`arg_path $DST`

SRC_HOST=`arg_host $SRC`
DST_HOST=`arg_host $DST`

DST_DIR=`dirname $DST_PATH`

VID=`get_vid $SRC_PATH`

# Check that we are not stopping, migrating or resuming
if echo `basename $SRC_PATH`|grep -vq '^disk'; then
    log_error "This TM does not support stop, migrating or resuming."
    exit 1
fi

    log "Retrieving iSCSI information"
    SCSI_DEVICE=$($SSH $SRC_HOST $MOUNT | $GREP $SRC_PATH | $AWK '{ print $1 }' | $CUT -d \"/\" -f3)
    ISCSI_TARGET=$($LS -l /dev/disk/by-path | $GREP $SCSI_DEVICE | $AWK \'{ print $8 }\' | $AWK -F \"-iscsi-\" \'{ print $2 }\' | $AWK -F \"-lun-\" \'{ print $1 }\')
    ISCSI_HOST=$($LS -l /dev/disk/by-path | $GREP $SCSI_DEVICE | $AWK \'{ print $8 }\' | $AWK -F \"-iscsi-\" \'{ print $1 }\' | $CUT -d \"-\" -f2)
    
    log "Unmounting and excluding iSCSI Disk"
    exec_and_log "$SSH $SRC_HOST $SUDO $UMOUNT $SRC_PATH"
    exec_and_log "$SSH $SRC_HOST rm -rf $SRC_PATH"

    log "Logging out iSCSI device"
    exec_and_log "$SSH $SRC_HOST $SUDO $ISCSIADM -m node --targetname \"$ISCSI_TARGET\" --portal \"$ISCSI_HOST\" --logout"

    log "Initiating iscsi target"
    exec_and_log "$SSH $DST_HOST $SUDO $ISCSIADM -m node --targetname \"$ISCSI_TARGET\" --portal \"$ISCSI_HOST\" --login"
    
    log "Mounting the iscsi device"
    exec_and_log "$SSH $DST_HOST $SUDO $MOUNT /dev/disk/by-path/ip-$(echo $ISCSI_HOST | $CUT -d \":\" -f1)\:$(echo $ISCSI_HOST | $CUT -d \":\" -f2)-iscsi-$(echo $ISCSI_TARGET | $CUT -d \":\" -f1)\:$(echo $ISCSI_TARGET | $CUT -d \":\" -f2)-lun-0-part1 $DST_PATH"