Fix bigboot repeatedly increasing the partition size

changelogs/fragments/fix_80.yml

@@ -0,0 +1,2 @@
+bugfixes:
+  - Fix bigboot repeatedly increasing the partition size

roles/bigboot/tasks/do_bigboot_reboot.yml

@@ -14,17 +14,20 @@
     dest: /usr/lib/dracut/modules.d/99extend_boot/increase-boot-partition.sh
     mode: '0554'
 
+- name: Configure hook removal reboot cron
+  ansible.builtin.cron:
+    name: bigboot hook removal
+    cron_file: bigboot_hook_removal
+    user: root
+    special_time: reboot
+    job: '(rm -rf /usr/lib/dracut/modules.d/99extend_boot; rm -f /etc/cron.d/bigboot_hook_removal) > /dev/null 2>&1'
+
 - name: Create the initramfs and reboot to run the module
   vars:
     initramfs_add_modules: "extend_boot"
   ansible.builtin.include_role:
     name: initramfs
 
-- name: Remove dracut extend boot module
-  ansible.builtin.file:
-    path: /usr/lib/dracut/modules.d/99extend_boot
-    state: absent
-
 - name: Retrieve mount points
   ansible.builtin.setup:
     gather_subset:

roles/initramfs/tasks/main.yml

@@ -14,20 +14,24 @@
   ansible.builtin.copy:
     remote_src: true
     src: /boot/initramfs-{{ initramfs_kernel_version }}.img
-    dest: /boot/initramfs-{{ initramfs_kernel_version }}.img.{{ initramfs_backup_extension }}
+    dest: /root/initramfs-{{ initramfs_kernel_version }}.img.{{ initramfs_backup_extension }}
     mode: "0600"
 
 - name: Create a new initramfs with the optional additional modules
    # yamllint disable-line rule:line-length
   ansible.builtin.command: '/usr/bin/dracut {{ ((initramfs_add_modules | length) > 0) | ternary("-a", "") }} "{{ initramfs_add_modules }}" --kver {{ initramfs_kernel_version }} --force'
   changed_when: true
 
+- name: Configure initramfs restore reboot cron
+  ansible.builtin.cron:
+    name: initramfs restore
+    cron_file: initramfs_restore
+    user: root
+    special_time: reboot
+     # yamllint disable-line rule:line-length
+    job: '(mv -f /root/initramfs-{{ initramfs_kernel_version }}.img.{{ initramfs_backup_extension }} /boot/initramfs-{{ initramfs_kernel_version }}.img; rm -f /etc/cron.d/initramfs_restore) > /dev/null 2>&1'
+
 - name: Reboot the server
   ansible.builtin.reboot:
     post_reboot_delay: "{{ initramfs_post_reboot_delay }}"
     reboot_timeout: "{{ initramfs_reboot_timeout }}"
-
-- name: Restore previous initramfs
-   # yamllint disable-line rule:line-length
-  ansible.builtin.command: '/usr/bin/mv -f /boot/initramfs-{{ initramfs_kernel_version }}.img.{{ initramfs_backup_extension }} /boot/initramfs-{{ initramfs_kernel_version }}.img'
-  changed_when: true