Add a backup disk usage analyzer script

roles/backup/tasks/main.yml

@@ -3,6 +3,8 @@
 ---
 - name: template out backup script
   ansible.builtin.template: src={{ backup_script }}.sh dest=/opt/backup.sh mode=0700 owner=root group=root
+- name: template out analyze script
+  ansible.builtin.template: src={{ backup_script }}-analyze.sh dest=/opt/analyze.sh mode=0700 owner=root group=root
 - name: template out restore script
   ansible.builtin.template: src={{ restore_script }}.sh dest=/opt/restore.sh mode=0700 owner=root group=root
 - name: configure systemd service

roles/backup/templates/s3backup-analyze.sh

@@ -0,0 +1,17 @@
+#! /bin/bash
+#
+# s3backup-analyze.sh
+# A companion script to s3backup to analyze disk usage for backups
+
+# NOTICE: DO NOT MODIFY THIS FILE
+# Any changes made will be clobbered by Ansible
+# Please make any configuration changes in the main repo
+
+exec ncdu \
+{% for item in backup_s3backup_list + backup_s3backup_list_extra %}
+	"{{ item }}" \
+{% endfor %}
+{% for item in backup_s3backup_exclude_list + backup_s3backup_exclude_list_extra %}
+	--exclude "{{ item }}" \
+{% endfor %}
+-r