Make fsid dynamic; Add backup validation - verify rear_force_backup

roles/nfs_export/tasks/main.yml

@@ -39,7 +39,11 @@
     path: /etc/exports
     state: present
     line: "{{ rear_nfs_export_share }} {{ _options }}"
+    create: true
+    mode: "0644"
+    owner: root
+    group: root
   loop: "{{ client_ips | list | flatten }}"
   vars:
-    _options: "{{ item }}(fsid=0,rw,sync,no_subtree_check,crossmnt)"
+    _options: "{{ item }}(fsid={{ rear_nfs_export_fsid }},rw,sync,no_subtree_check,crossmnt)"
   notify: Export share

roles/nfs_export/vars/main.yml

@@ -1,2 +1,3 @@
 ---
 rear_nfs_export_share: "/backups/standalone"
+rear_nfs_export_fsid: 0