stat

#!/bin/bash

# -------------------------------------------------------------------------- #
# Copyright 2002-2017, OpenNebula Project, OpenNebula Systems                #
#                                                                            #
# 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.                                             #
#--------------------------------------------------------------------------- #

# ------------------------------------------------------------------------------
#  Set up Environment and transfer arguments
# ------------------------------------------------------------------------------
#
#  libfs.sh & scripts_common.sh: includes tools and lib calls
# ------------------------------------------------------------------------------

if [ -z "${ONE_LOCATION}" ]; then
    LIB_LOCATION=/usr/lib/one
else
    LIB_LOCATION=$ONE_LOCATION/lib
fi

. $LIB_LOCATION/sh/scripts_common.sh

DRIVER_PATH=$(dirname $0)
source ${DRIVER_PATH}/../libfs.sh

# -------- Get stat and datastore arguments from OpenNebula core ------------

DRV_ACTION=$1
ID=$2

XPATH="${DRIVER_PATH}/../xpath.rb -b $DRV_ACTION"

unset i XPATH_ELEMENTS

while IFS= read -r -d '' element; do
    XPATH_ELEMENTS[i++]="$element"
done < <($XPATH /DS_DRIVER_ACTION_DATA/IMAGE/PATH)

SRC="${XPATH_ELEMENTS[0]}"

# ------------------------------------------------------------------------------
#  Compute the size
# ------------------------------------------------------------------------------

SIZE=`fs_size $SRC`

if [ "$SIZE" = "0" ]; then
    log_error "Cannot determine size for $SRC"
    exit -1
fi

echo "$SIZE"