molecule test and idempotence

tasks/centos.yml

@@ -1,18 +1,38 @@
 ---
 - name: centos | installing lvm2
-  yum:
+  package:
     name: "lvm2"
     state: "present"
   become: true
 
 - name: centos | installing sg3_utils
-  yum:
+  package:
     name: "sg3_utils"
     state: "present"
   become: true
 
+- name: centos | install xfs tools
+  package:
+    name: "xfsprogs"
+    state: "present"
+  become: yes
+  loop: "{{ lvm_groups|subelements('lvnames') }}"
+  when: >
+    (
+    (item.1 is defined and item.1 != 'None') and
+    (
+    item.1.filesystem is defined and
+    item.1.filesystem == "xfs"
+    )
+    and
+    (
+    item.1.create is defined and
+    item.1.create
+    )
+    )
+
 - name: centos | checking for scsi devices
-  shell: "sg_scan"
+  command: "sg_scan"
   become: true
   register: "scsi_devices"
   changed_when: False