snap_delete

#!/bin/bash

# -------------------------------------------------------------------------- #
# Copyright 2002-2019, 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.                                             #
#--------------------------------------------------------------------------- #

###############################################################################
# This script is used to delete a snapshot of an image
###############################################################################

# -------- Set up the environment to source common tools & conf ------------

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
source ${DRIVER_PATH}/../../etc/datastore/linstor_un/linstor_un.conf
source ${DRIVER_PATH}/linstor_utils.sh

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

DRV_ACTION=$1
ID=$2

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

unset i j XPATH_ELEMENTS

while IFS= read -r -d '' element; do
    XPATH_ELEMENTS[i++]="$element"
done < <($XPATH     /DS_DRIVER_ACTION_DATA/IMAGE/SOURCE \
                    /DS_DRIVER_ACTION_DATA/IMAGE/TARGET_SNAPSHOT \
                    /DS_DRIVER_ACTION_DATA/DATASTORE/TEMPLATE/LS_CONTROLLERS \
                    /DS_DRIVER_ACTION_DATA/DATASTORE/TEMPLATE/LS_CERTFILE \
                    /DS_DRIVER_ACTION_DATA/DATASTORE/TEMPLATE/LS_KEYFILE \
                    /DS_DRIVER_ACTION_DATA/DATASTORE/TEMPLATE/LS_CAFILE)

SRC="${XPATH_ELEMENTS[j++]}"
SNAP_ID="${XPATH_ELEMENTS[j++]}"
LS_CONTROLLERS="${XPATH_ELEMENTS[j++]}"
LS_CERTFILE="${XPATH_ELEMENTS[j++]}"
LS_KEYFILE="${XPATH_ELEMENTS[j++]}"
LS_CAFILE="${XPATH_ELEMENTS[j++]}"

SRC_DEV="$SRC"
SRC_RES="$(echo "$SRC_DEV" | $AWK -F/ '{print $(NF-1)}')"

linstor_load_keys

SNAPSHOT="snapshot-${SNAP_ID}"

# Remove snapshot from monitoring
linstor_exec_and_log \
    "resource-definition set-property $SRC_RES Aux/one/SNAPSHOT_${SNAP_ID}/DISK_SIZE"

# Remove snapshot
linstor_exec_and_log \
    "snapshot delete $SRC_RES $SNAPSHOT"

exit 0