WIP B&R tool

Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>

scripts/vm/hypervisor/kvm/nasbackup.sh

@@ -0,0 +1,45 @@
+#!/bin/bash
+## Licensed to the Apache Software Foundation (ASF) under one
+## or more contributor license agreements.  See the NOTICE file
+## distributed with this work for additional information
+## regarding copyright ownership.  The ASF licenses this file
+## to you 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.
+
+# CloudStack B&R NAS (KVM) Backup and Recovery Tool
+
+# TODO: do libvirt version & other dependency checks
+
+# TODO: logging & args/opts handling
+
+backup_domain() {
+  domain=$1 # TODO: get as opt?
+  # TODO: santiy checks on domain
+  # get domblklist
+  # gather external snapshot diskspec/target
+  # ensure the target nas is mounted / path is known or available
+  # virsh snapshot-create-as -> snapshot domain with --no-metadata--atomic --quiesce (?) --disk-only
+  # merge/commit target -> domblklist; blockcommit
+  # backup this domain & its disks, xml completely
+  # cleanup snapshot(s)
+}
+
+restore_all_volumes() {
+  # check and mount nas target & copy files
+  # check and restore all volumes
+}
+
+restore_volume() {
+  # check and mount nas target & copy files
+  # check and restore specific volume (qcow2)
+}