fixes for boot partition sizes

tasks/capture_boot_device_details.yml

@@ -1,13 +1,21 @@
 ---
 - name: Get /boot mount information
   ansible.builtin.set_fact:
-    bigboot_boot_info: "{{ ansible_facts.mounts \
+    bigboot_boot_mount: "{{ ansible_facts.mounts \
       | selectattr('mount', 'equalto', '/boot') | first }}"
 
+- name: Capture device for /boot
+  ansible.builtin.set_fact:
+    bigboot_boot_device: "{{ bigboot_boot_mount.device | regex_replace('^.*/(\\w+$)', '\\1') }}"
+
+- name: Capture partition side for /boot parition
+  ansible.builtin.set_fact:
+    bigboot_boot_partsize: "{{ ansible_devices[bigboot_boot_device[:-1]].partitions[bigboot_boot_device].size }}"
+
 - name: Capture required expansion space
   ansible.builtin.set_fact:
     bigboot_expansion_diff:
-      "{{ bigboot_size | human_to_bytes - bigboot_boot_info.size_total | int }}"
+      "{{ bigboot_size | human_to_bytes - bigboot_boot_partsize | human_to_bytes }}"
 
 - name: Convert size difference to MB
   ansible.builtin.set_fact:
@@ -15,7 +23,7 @@
 
 - name: Set bigboot size 4k aligned
   ansible.builtin.set_fact:
-    bigboot_size: "{{ bigboot_size_expansion_mb[:-2] \
+    bigboot_size_target: "{{ bigboot_size_expansion_mb[:-2] \
       | regex_replace('\\.\\d+ ', '') \
       | int | get_block_size_up }}"
 
@@ -33,4 +41,4 @@
   rescue:
     - name: Expansion of /boot required
       ansible.builtin.debug:
-        msg: "Expanding /boot by an additional {{ bigboot_size }}."
+        msg: "Expanding /boot by an additional {{ bigboot_size_target }}."