From a51d077ab22a984fd9885df5da49bfc8a3dfab0e Mon Sep 17 00:00:00 2001
From: Chris Hammer <chris@thezengarden.net>
Date: Wed, 10 Jan 2024 17:34:40 -0500
Subject: [PATCH] Add validation that the requested volumes have shrunk per
 issue #46 - 'Validate shrink_lv after reboot' (#49)

---
 roles/shrink_lv/tasks/main.yaml | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/roles/shrink_lv/tasks/main.yaml b/roles/shrink_lv/tasks/main.yaml
index a76ae0f..1b5dada 100644
--- a/roles/shrink_lv/tasks/main.yaml
+++ b/roles/shrink_lv/tasks/main.yaml
@@ -35,3 +35,20 @@
   ansible.builtin.file:
     path: /usr/lib/dracut/modules.d/99shrink_lv
     state: absent
+
+- name: Retrieve mount points
+  ansible.builtin.setup:
+    gather_subset:
+    - "!all"
+    - "!min"
+    - mounts
+
+- name: Assert that the filesystem has shrunk
+  ansible.builtin.assert:
+    # yamllint disable-line rule:line-length
+    that: (ansible_facts.mounts | selectattr('device', 'equalto', item.device) | map(attribute='size_total') | join | int) <= (item.size | ansible.builtin.human_to_bytes)
+    fail_msg: >
+      Logical Volume {{ item.device }} was not shrunk to {{ item.size }} as requested
+    success_msg: >
+      Logical Volume {{ item.device }} has been shrunk to {{ item.size }} as requested.
+  loop: "{{ shrink_lv_devices }}"