clone.sh

#!/bin/bash

# -------------------------------------------------------------------------- #
# Copyright 2002-2013, 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.                                             #
#--------------------------------------------------------------------------- #

# clone fe:SOURCE host:remote_system_ds/disk.i vmid dsid
#   - fe is the front-end hostname
#   - SOURCE is the path of the disk image in the form DS_BASE_PATH/disk
#   - host is the target host to deploy the VM
#   - remote_system_ds is the path for the system datastore in the host
#   - vmid is the id of the VM
#   - dsid is the target datastore (0 is the system datastore)

SRC=$1
DST=$2

VMID=$3
DSID=$4

if [ -z "${ONE_LOCATION}" ]; then
    TMCOMMON=/var/lib/one/remotes/tm/tm_common.sh
else
    TMCOMMON=$ONE_LOCATION/var/remotes/tm/tm_common.sh
fi

. $TMCOMMON

DRIVER_PATH=$(dirname $0)

#-------------------------------------------------------------------------------
# Set dst path and dir
#-------------------------------------------------------------------------------
DST_PATH=`arg_path $DST`
DST_HOST=`arg_host $DST`
DST_DIR=`dirname $DST_PATH`

SRC_ARG_PATH=`arg_path $SRC`

DST_DS_PATH="$(dirname $(dirname $(dirname $DST_PATH)))"
SRC_DS_PATH="$(dirname $(dirname $SRC_ARG_PATH))"

SRC_PATH="${DST_DS_PATH}${SRC_ARG_PATH##$SRC_DS_PATH}"

DISK_ID=$(echo "$DST_PATH" | $AWK -F. '{print $NF}')

ssh_make_path $DST_HOST $DST_DIR

#-------------------------------------------------------------------------------
# Get image information
#-------------------------------------------------------------------------------

XPATH="${DRIVER_PATH}/../../datastore/xpath.rb --stdin"

unset i XPATH_ELEMENTS

while IFS= read -r -d '' element; do
    XPATH_ELEMENTS[i++]="$element"
done < <(onevm show -x $VMID| $XPATH \
                    /VM/HISTORY_RECORDS/HISTORY[last\(\)]/VMMMAD \
                    /VM/TEMPLATE/DISK[DISK_ID=$DISK_ID]/TYPE )

VMMMAD="${XPATH_ELEMENTS[0]}"
DISK_TYPE="${XPATH_ELEMENTS[1]}"

#-------------------------------------------------------------------------------
# Clone (cp) SRC into DST
#-------------------------------------------------------------------------------

if [ "$VMMMAD" = "vmm_vmware" -a "$DISK_TYPE" = "CDROM" ]; then
    DST_PATH="${DST_PATH}.iso"
fi

case $SRC in
http://*)
    log "Downloading $SRC into $DST_PATH"
    ssh_exec_and_log $DST_HOST \
                     "$WGET -O $DST_PATH $SRC" \
                     "Error downloading $SRC"
    ;;

*)
    log "Cloning $SRC_PATH in $DST"
    ssh_exec_and_log $DST_HOST \
                     "cd $DST_DIR; cp -r $SRC_PATH $DST_PATH" \
                     "Error copying $SRC to $DST"
    ;;
esac

exit 0