molecule test and idempotence

tasks/create_vg.yml

@@ -0,0 +1,22 @@
+---
+- name: manage_lvm | check existing physical volume group(s)
+  shell: "vgdisplay | grep '{{ item['vgname'] }}'"
+  become: true
+  with_items: "{{ lvm_groups }}"
+  ignore_errors: True
+  changed_when: no
+  register: vg_exist
+
+- debug: var=vg_exist
+
+- name: manage_lvm | creating new LVM physical volume group(s)
+  lvg:
+    vg: "{{ item.item['vgname'] }}"
+    pvs: "{{ item.item['disks']|join(',') }}"
+    state: "present"
+  become: true
+  with_items: "{{ vg_exist.results }}"
+  when: >
+    item.rc != 0 and
+    item.item['create'] is defined and
+    item.item['create']