Calculate PE size, and subtract from the shrink size; Attempts to fix allocation/pretending size issue

Reviewed-on: #6

.gitignore

@@ -11,3 +11,4 @@ collections/ansible_collections/rhc*
 roles/autofsck
 roles/verified_reboot
 *.bak
+tasks/check_space_fallback_local.yml

ansible.cfg

@@ -14,6 +14,7 @@ timeout                 = 30
 host_key_checking       = false
 display_skipped_hosts   = false
 deprecation_warnings    = false
+show_custom_stats       = true
 
 # callback_whitelist is deprecated
 # we only include here for backwards compatibility

bigboot-wip.yml

@@ -1,27 +0,0 @@
----
-- name: Perform logical volume and boot parition resizing as needed
-  hosts: all
-  become: true
-  gather_facts: true
-  strategy: free
-
-  vars_files:
-    - bigboot_vars.yml
-
-  tasks:
-    - name: Cleanup from any previous executions
-      ansible.builtin.import_tasks: tasks/cleanup.yml
-
-    - name: Shrink the logical volume to support /boot expansion
-      ansible.builtin.import_role:
-        name: infra.lvm_snapshots.shrink_lv
-      vars:
-        shrink_lv_devices:
-          - device: "/dev/mapper/system-root"
-            size: "53687091200"
-
-    - name: Expand the /boot partition as requested
-      ansible.builtin.import_role:
-        name: infra.lvm_snapshots.bigboot
-      vars:
-        bigboot_partition_size: "{{ bigboot_size_target }}"

bigboot_execute_resize.yml

@@ -56,4 +56,14 @@
           ansible.builtin.import_role:
             name: infra.lvm_snapshots.bigboot
           vars:
-            bigboot_partition_size: "{{ bigboot_size_target }}"
+            bigboot_partition_size: "{{ bigboot_data[inventory_hostname]['bigboot_size_target'] }}"
+
+        - name: Failure on request
+          ansible.builtin.fail:
+            msg: "Ansible job has been failed upon request."
+          when:
+            - bigboot_fail_request | default(false) | bool
+
+      rescue:
+        - name: Cleanup from any previous executions
+          ansible.builtin.import_tasks: tasks/cleanup.yml

bigboot_rear_backup.yml

@@ -1,6 +1,27 @@
 ---
-- name: Perform a ReaR backup before the /boot expansion
-  ansible.builtin.import_playbook: rhc.rear.rear_backup
-  when:
-    - bigboot_data[inventory_hostname]['bigboot_execute_bigboot'] | default(false) | bool
-    - not rear_backup_skip | default(false) | bool
+- name: ReaR Backup Playbook
+  hosts: all
+  become: true
+  gather_facts: true
+  strategy: free
+
+  vars_files:
+    - bigboot_vars.yml
+
+  tasks:
+    - name: Import rear_vars role
+      ansible.builtin.import_role:
+        name: rhc.rear.rear_vars
+
+    - name: Fetch the template name from NFS exports
+      ansible.builtin.set_fact:
+        job_template_name: "{{ nfs_exports_template_name }}"
+
+    - name: Perform ReaR Backup
+      when:
+        - bigboot_data[inventory_hostname]['bigboot_execute_bigboot'] | default(false) | bool
+        - not rear_backup_skip | default(false) | bool
+      block:
+        - name: Perform ReaR backup
+          ansible.builtin.include_role:
+            name: rhc.rear.rear_backup

bigboot_rear_clean.yml

@@ -0,0 +1,6 @@
+---
+- name: Cleanup ReaR artifacts on successful Bigboot
+  ansible.builtin.import_playbook: rhc.rear.rear_remove
+  when:
+    - bigboot_data[inventory_hostname]['bigboot_execute_bigboot'] | default(false) | bool
+    - not rear_backup_skip | default(false) | bool

bigboot_rear_nfs_export.yml

@@ -24,17 +24,22 @@
 - name: Update NFS exports on reachable servers
   hosts: reachable_hosts
   become: true
-  gather_facts: false
+  gather_facts: true
 
   vars_files:
     - bigboot_vars.yml
 
   tasks:
+    - name: Import rear_vars role
+      ansible.builtin.import_role:
+        name: rhc.rear.rear_vars
+
     - name: Grab the template name
       ansible.builtin.set_stats:
+        aggregate: false
+        per_host: false
         data:
           nfs_exports_template_name: "{{ tower_job_template_name }}"
-        aggregate: true
 
     - name: Create IP list and add to NFS exports
       ansible.builtin.include_tasks: tasks/rear_nfs_exports.yml
@@ -44,4 +49,3 @@
       when:
         - item['value']['bigboot_execute_bigboot'] | default(false) | bool
         - not rear_backup_skip | default(false) | bool
-

bigboot_rear_restore.yml

@@ -1,5 +1,5 @@
 ---
-- name: Execute a ReaR restore and restore system to pre-Bigboot state
+- name: Execute ReaR restore
   hosts: all
   become: true
   gather_facts: true
@@ -9,8 +9,12 @@
     - bigboot_vars.yml
 
   tasks:
-    - name: Shrink the logical volume to support /boot expansion
+    - name: Import rear_vars role
       ansible.builtin.import_role:
+        name: rhc.rear.rear_vars
+
+    - name: Restore from ReaR backup
+      ansible.builtin.include_role:
         name: rhc.rear.rear_restore
 
     - name: Cleanup from any previous executions

bigboot_setup_environment.yml

@@ -12,19 +12,13 @@
     - name: Cleanup from any previous executions
       ansible.builtin.import_tasks: tasks/cleanup.yml
 
-    # - name: Check for services that require being disabled
-    #   ansible.builtin.import_tasks: tasks/check_services.yml
-
     - name: Set boot device details
       ansible.builtin.import_tasks: tasks/capture_boot_device_details.yml
 
     - name: Set logical volume information
       ansible.builtin.import_tasks: tasks/capture_lv_device_details.yml
-
-    # - name: Run pre-checks to verify environment
-    #   ansible.builtin.import_tasks: tasks/pre-checks.yml
-    #   when:
-    #     - bigboot_execute_bigboot | bool
+      when:
+        - bigboot_execute_bigboot | default(false) | bool
 
     - name: Set environment for subsequent workflow nodes
       ansible.builtin.set_stats:
@@ -34,10 +28,11 @@
             combine({inventory_hostname:
               {
                 'bigboot_execute_bigboot': bigboot_execute_bigboot,
-                'bigboot_execute_shrink_lv': bigboot_execute_shrink_lv,
-                'bigboot_adjacent_lvm_device': bigboot_adjacent_lvm_device,
-                'bigboot_lv_shrink_size': bigboot_lv_shrink_size | int,
-                'bigboot_pv': bigboot_pv,
+                'bigboot_execute_shrink_lv': bigboot_execute_shrink_lv | default(false),
+                'bigboot_adjacent_lvm_device': bigboot_adjacent_lvm_device | default(omit),
+                'bigboot_lv_shrink_size': bigboot_lv_shrink_size | default(0) | int,
+                'bigboot_pv': bigboot_pv | default(omit),
+                'bigboot_size_target': bigboot_size_target_fallback | default(bigboot_size_target),
                 'ip_addresses': ansible_all_ipv4_addresses,
                 'server_hostname': ansible_hostname
               }

collections/ansible_collections/infra.lvm_snapshots-2.1.0.info/GALAXY.yml

@@ -1,8 +0,0 @@
-download_url: https://galaxy.ansible.com/api/v3/plugin/ansible/content/published/collections/artifacts/infra-lvm_snapshots-2.1.0.tar.gz
-format_version: 1.0.0
-name: lvm_snapshots
-namespace: infra
-server: https://galaxy.ansible.com/api/
-signatures: []
-version: 2.1.0
-version_url: /api/v3/plugin/ansible/content/published/collections/index/infra/lvm_snapshots/versions/2.1.0/

collections/ansible_collections/infra/lvm_snapshots/.ansible-lint

@@ -0,0 +1,5 @@
+---
+exclude_paths:
+- .github
+- changelogs
+...

collections/ansible_collections/infra/lvm_snapshots/.gitignore

@@ -0,0 +1 @@
+inventory.yml

collections/ansible_collections/infra/lvm_snapshots/.pylintrc

@@ -0,0 +1,78 @@
+[MESSAGES CONTROL]
+disable=
+# "F" Fatal errors that prevent further processing
+# import-error,
+# "I" Informational noise
+# "E" Error for important programming issues (likely bugs)
+# no-member,
+# no-name-in-module,
+# raising-bad-type,
+# "W" Warnings for stylistic problems or minor programming issues
+# no-absolute-import,
+# arguments-differ,
+# cell-var-from-loop,
+# fixme,
+;  lost-exception,
+;  no-init,
+;  pointless-string-statement,
+;  protected-access,
+;  redefined-outer-name,
+;  relative-import,
+;  undefined-loop-variable,
+;  unsubscriptable-object,
+# unused-argument,
+;  unused-import,
+;  unspecified-encoding,
+# "C" Coding convention violations
+;  bad-continuation,
+;  missing-docstring,
+;  wrong-import-order,
+;  use-maxsplit-arg,
+;  consider-using-dict-items,
+;  consider-using-enumerate,
+# "R" Refactor recommendations
+;  duplicate-code,
+;  no-self-use,
+;  too-few-public-methods,
+;  too-many-branches,
+;  too-many-locals,
+;  too-many-statements,
+;  consider-using-from-import,
+;  use-list-literal,
+;  use-dict-literal,
+# new for python3 version of pylint
+;  useless-object-inheritance,
+;  consider-using-set-comprehension,  # pylint3 force to use comprehension in place we don't want (py2 doesn't have these options, for inline skip)
+;  unnecessary-pass,
+;  invalid-envvar-default,  # pylint3 warnings envvar returns str/none by default
+;  bad-option-value,  # python 2 doesn't have import-outside-toplevel, but in some case we need to import outside toplevel
+;  super-with-arguments,  # required in python 2
+;  raise-missing-from,  # no 'raise from' in python 2
+;  use-a-generator,  # cannot be modified because of Python2 support
+;  consider-using-with,  # on bunch spaces we cannot change that...
+;  duplicate-string-formatting-argument,  # TMP: will be fixed in close future
+ consider-using-f-string,  # sorry, not gonna happen, still have to support py2
+;  use-dict-literal
+
+[FORMAT]
+# Maximum number of characters on a single line.
+max-line-length=120
+
+[DESIGN]
+max-args=11  # 2x + 1 from default
+max-attributes=21  # 4x + 1 from default
+
+[REPORTS]
+msg-template='[{msg_id} {symbol}] {msg} File: {path}, line {line}, in {obj}'
+
+[BASIC]
+# In order to make a check more strict add proper regex http://pylint-messages.wikidot.com/messages:c0103
+argument-rgx=.*
+attr-rgx=.*
+class-rgx=.*
+const-rgx=.*
+function-rgx=.*
+method-rgx=.*
+module-rgx=.*
+variable-rgx=.*
+inlinevar-rgx=.*

collections/ansible_collections/infra/lvm_snapshots/.yamllint

@@ -0,0 +1,4 @@
+rules:
+  indentation:
+    spaces: 2
+    indent-sequences: false

collections/ansible_collections/infra/lvm_snapshots/CHANGELOG.rst

@@ -4,6 +4,36 @@ LVM Snapshot Linux Role Release Notes
 
 .. contents:: Topics
 
+v2.1.1
+======
+
+Minor Changes
+-------------
+
+- Improve documentation and example usage of initramfs role
+- Improved console logging of bigboot progress to include percent complete
+- Support check mode when using the bigboot role
+
+Bugfixes
+--------
+
+- Fix bigboot repeatedly increasing the partition size
+
+v2.1.0
+======
+
+Major Changes
+-------------
+
+- add bigboot support for Btrfs next partition
+
+Minor Changes
+-------------
+
+- do bigboot LVM changes with Ansible instead of pre-mount hook
+- new bigboot_partition_size variable to make bigboot role more idempotent
+- show console log output from bigboot even if quiet kernel arg is set
+
 v2.0.3
 ======
 

collections/ansible_collections/infra/lvm_snapshots/FILES.json

@@ -1,670 +0,0 @@
-{
- "files": [
-  {
-   "name": ".",
-   "ftype": "dir",
-   "chksum_type": null,
-   "chksum_sha256": null,
-   "format": 1
-  },
-  {
-   "name": "roles",
-   "ftype": "dir",
-   "chksum_type": null,
-   "chksum_sha256": null,
-   "format": 1
-  },
-  {
-   "name": "roles/snapshot_remove",
-   "ftype": "dir",
-   "chksum_type": null,
-   "chksum_sha256": null,
-   "format": 1
-  },
-  {
-   "name": "roles/snapshot_remove/tasks",
-   "ftype": "dir",
-   "chksum_type": null,
-   "chksum_sha256": null,
-   "format": 1
-  },
-  {
-   "name": "roles/snapshot_remove/tasks/main.yml",
-   "ftype": "file",
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-   "format": 1
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-   "ftype": "file",
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collections/ansible_collections/infra/lvm_snapshots/MANIFEST.json

@@ -1,35 +0,0 @@
-{
- "collection_info": {
-  "namespace": "infra",
-  "name": "lvm_snapshots",
-  "version": "2.1.0",
-  "authors": [
-   "Ygal Blum <yblum@redhat.com>",
-   "Bob Mader <bob@redhat.com>"
-  ],
-  "readme": "README.md",
-  "tags": [
-   "ansible",
-   "lvm",
-   "storage"
-  ],
-  "description": "Ansible role for creating and rolling back LVM snapshots",
-  "license": [],
-  "license_file": "LICENSE",
-  "dependencies": {
-   "community.general": "*"
-  },
-  "repository": "https://github.com/redhat-cop/infra.lvm_snapshots",
-  "documentation": "https://github.com/redhat-cop/infra.lvm_snapshots",
-  "homepage": "https://github.com/redhat-cop/infra.lvm_snapshots",
-  "issues": "https://github.com/redhat-cop/infra.lvm_snapshots/issues"
- },
- "file_manifest_file": {
-  "name": "FILES.json",
-  "ftype": "file",
-  "chksum_type": "sha256",
-  "chksum_sha256": "d5511e77f16eea344fcd5c4f879eae5752db76b5cdfc848ea541b2d8d02727bc",
-  "format": 1
- },
- "format": 1
-}

collections/ansible_collections/infra/lvm_snapshots/STICKERS.md

@@ -0,0 +1,13 @@
+# Bigboot Stickers
+
+I presented a lightning talk at Red Hat Summit 2024 giving an overview and demo of the [`bigboot`](./roles/bigboot/) role. To help drive engagement and add some excitement, I had 100 of these stickers printed up. The talk was well received and all the stickers were given away.
+
+![People grabbing stickers after my talk](images/bobtalk.jpg)
+
+Since then, lots of folks asked me if there are more stickers. Well, I recently discovered how to make them available for folks to order at Sticker Mule. You can get 10 stickers for 9.99 USD. These are nice die cut stickers measuring 2.29" x 3" (58mm x 76mm). They are available with [plain white vinyl](https://www.stickermule.com/swapdisk/item/14744765) the same as the ones I gave away or with this [fancy pants holigraphic background](https://www.stickermule.com/swapdisk/item/17024469) that looks really cool.
+
+![Bigboot stickers in white and holographic](images/bigboot-stickers.png)
+
+If you have the means to print your own stickers or just want the source artwork, download the 1200 dpi image file [here](images/bigboot-sticker-transbg-1200dpi.png).
+
+Add some bling to your laptop lid today and share with your friends. Cheers!

collections/ansible_collections/infra/lvm_snapshots/changelogs/.plugin-cache.yaml

@@ -16,4 +16,4 @@ plugins:
   strategy: {}
   test: {}
   vars: {}
-version: 2.0.3
+version: 2.1.1

collections/ansible_collections/infra/lvm_snapshots/changelogs/changelog.yaml

@@ -122,3 +122,29 @@ releases:
     - fix_image_copy.yml
     - fix_lvm_config.yml
     release_date: '2024-04-25'
+  2.1.0:
+    changes:
+      major_changes:
+      - add bigboot support for Btrfs next partition
+      minor_changes:
+      - do bigboot LVM changes with Ansible instead of pre-mount hook
+      - new bigboot_partition_size variable to make bigboot role more idempotent
+      - show console log output from bigboot even if quiet kernel arg is set
+    fragments:
+    - btrfs_bigboot.yml
+    - more_idempotent.yml
+    release_date: '2024-07-15'
+  2.1.1:
+    changes:
+      bugfixes:
+      - Fix bigboot repeatedly increasing the partition size
+      minor_changes:
+      - Improve documentation and example usage of initramfs role
+      - Improved console logging of bigboot progress to include percent complete
+      - Support check mode when using the bigboot role
+    fragments:
+    - 78-improve-bigboot-check-mode.yml
+    - bigboot_progress_meter.yml
+    - fix_80.yml
+    - initramfs_docs.yml
+    release_date: '2024-12-10'

collections/ansible_collections/infra/lvm_snapshots/changelogs/fragments/84-prevent-snapshot-if-newest-installed-kernel-not-in-use.yml

@@ -0,0 +1,2 @@
+minor_changes:
+- Prevent snapshot creation when newest installed kernel is not in use

collections/ansible_collections/infra/lvm_snapshots/changelogs/fragments/87-check-device-fix.yml

@@ -0,0 +1,3 @@
+minor_changes:
+- Updates to support hosts with bind/overlay mounts attached
+  to the device intended to be operated on.

collections/ansible_collections/infra/lvm_snapshots/changelogs/fragments/btrfs_bigboot.yml

@@ -1,5 +0,0 @@
-major_changes:
-- add bigboot support for Btrfs next partition
-minor_changes:
-- show console log output from bigboot even if quiet kernel arg is set
-- do bigboot LVM changes with Ansible instead of pre-mount hook

collections/ansible_collections/infra/lvm_snapshots/changelogs/fragments/more_idempotent.yml

@@ -1,2 +0,0 @@
-minor_changes:
-- new bigboot_partition_size variable to make bigboot role more idempotent

collections/ansible_collections/infra/lvm_snapshots/galaxy.yml

@@ -0,0 +1,31 @@
+---
+namespace: infra
+name: lvm_snapshots
+version: 2.1.1
+readme: README.md
+authors:
+- Ygal Blum <yblum@redhat.com>
+- Bob Mader <bob@redhat.com>
+description: Ansible role for creating and rolling back LVM snapshots
+license_file: LICENSE
+tags:
+- ansible
+- lvm
+- storage
+dependencies:
+  "community.general": "*"
+repository: https://github.com/redhat-cop/infra.lvm_snapshots
+documentation: https://github.com/redhat-cop/infra.lvm_snapshots
+homepage: https://github.com/redhat-cop/infra.lvm_snapshots
+issues: https://github.com/redhat-cop/infra.lvm_snapshots/issues
+build_ignore:
+- .ansible-lint
+- .pylintrc
+- .yamllint
+- .git
+- .gitignore
+- ansible.cfg
+- requirements.yml
+- tests
+- vendor
+...

collections/ansible_collections/infra/lvm_snapshots/requirements.yml

@@ -0,0 +1,4 @@
+---
+collections:
+- name: community.general
+...

collections/ansible_collections/infra/lvm_snapshots/roles/bigboot/README.md

@@ -10,10 +10,12 @@ The role configures a dracut pre-mount hook that executes during a reboot to inc
 
 > **WARNING!**
 >
-> All blocks of the partition above the boot partition are copied using `sfdisk` during the reboot and this can take several minutes or more depending on the size of that partition. The bigboot script periodically outputs progress messages to the system console to make it clear that the system is not in a "hung" state, but these progress messages may not be seen if `rhgb` or `quiet` kernel arguments are set. If the system is reset while the blocks are being copied, the partition will be irrcoverably corrupted. Do not assume the system is hung or force a reset during the bigboot reboot!
+> All blocks of the partition above the boot partition are copied using `sfdisk` during the reboot and this can take several minutes or more depending on the size of that partition. The bigboot script periodically outputs progress messages to the system console to make it clear that the system is not in a "hung" state, but these progress messages may not be seen if `rhgb` or `quiet` kernel arguments are set. If the system is reset while the blocks are being copied, the partition will be irrecoverably corrupted. Do not assume the system is hung or force a reset during the bigboot reboot!
 
 To learn more about how bigboot works, check out this [video](https://people.redhat.com/bmader/bigboot-demo.mp4).
 
+Get bigboot stickers for your laptop [here](../../STICKERS.md).
+
 ## Role Variables
 
 ### `bigboot_partition_size` (String)

collections/ansible_collections/infra/lvm_snapshots/roles/bigboot/files/bigboot.sh

@@ -71,10 +71,18 @@ if ! ret=$(echo Yes | /usr/sbin/parted "$boot_disk_device" ---pretend-input-tty
 fi
 
 # Output progress messages to help impatient operators recognize the server is not "hung"
-( sleep 4
-  while t="$(ps -C sfdisk -o cputime=)"; do
-    echo "$name: Partition move is progressing, please wait! ($t)"
-    sleep 120
+( sleep 9
+  while pid="$(ps -C sfdisk -o pid:1=)"; do
+    pct='??'
+    for fd in /proc/"$pid"/fd/*; do
+      if [[ "$(readlink "$fd")" == "$boot_disk_device" ]]; then
+        offset="$(awk '/pos:/ {print $2}' /proc/"$pid"/fdinfo/"${fd##*/}")"
+        pct="$((-100*offset/next_part_size+100))"
+        break
+      fi
+    done
+    echo "$name: Partition move is progressing, please wait! ($pct% complete)"
+    sleep 20
   done ) &
 
 # Shift next partition

collections/ansible_collections/infra/lvm_snapshots/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:
@@ -46,3 +49,4 @@
       Boot filesystem size is now
       {{ bigboot_boot_fs_new_size | int | human_readable }}
       ({{ (bigboot_boot_fs_new_size | int - bigboot_boot_fs_original_size | int) | human_readable }} increase)
+  when: not ansible_check_mode

collections/ansible_collections/infra/lvm_snapshots/roles/bigboot/tasks/prep_lvm.yml

@@ -15,6 +15,7 @@
       -o vg_extent_size {{ bigboot_next_partition_vg }}
   changed_when: false
   register: vg_extent_size
+  check_mode: false
 
 - name: Align bigboot increase to extent size
   ansible.builtin.set_fact:

collections/ansible_collections/infra/lvm_snapshots/roles/initramfs/README.md

@@ -6,8 +6,7 @@ The role is designed to be internal for this collection and support the automati
 
 ## Contents
 
-To allow fast fail, the role provides a [`preflight.yml`](./tasks/preflight.yml) tasks file to be used at the start of the playbook.
-Please note that the [`main`](./tasks/main.yml) task file will not run the preflight checks
+To allow fast fail, the role provides a [`preflight.yml`](./tasks/preflight.yml) tasks file that should be included early in the play that ultimately includes the [`main`](./tasks/main.yml) role that actually reboots the host. Refer the usage section below for example.
 
 ## Role Variables
 
@@ -15,8 +14,8 @@ All variables are optional
 
 ### `initramfs_add_modules`
 
-`initramfs_add_modules` is a a space-separated list of dracut modules to be added to the default set of modules.
-See [`dracut`](https://man7.org/linux/man-pages/man8/dracut.8.html) `-a` parameter for details.
+`initramfs_add_modules` is a space-separated list of dracut modules to be added to the default set of modules.
+See [`dracut --add`](https://man7.org/linux/man-pages/man8/dracut.8.html) option for details.
 
 ### `initramfs_backup_extension`
 
@@ -39,21 +38,54 @@ The value is used for [`reboot_timeout`](https://docs.ansible.com/ansible/latest
 Defaults to `7200`
 
 
-## Example of a playbook to run the role
-The following yaml is an example of a playbook that runs the role against a group of hosts named `rhel` and increasing the size of its boot partition by 1G.
-The boot partition is automatically retrieved by the role by identifying the existing mounted partition to `/boot` and passing the information to the script using the `kernel_opts`.
+## Example role usage
+
+We will refer to the `bigboot` role of this collection to explain how the `initramfs` role can be used. Let's look at the `tasks/main.yaml` of the `bigboot` role. After the required facts have been gathered, the [Validate initramfs preflight](https://github.com/redhat-cop/infra.lvm_snapshots/blob/2.1.0/roles/bigboot/tasks/main.yaml#L10-L13) task includes the `initramfs` role preflight tasks:
 
 ```yaml
-- name: Extend boot partition playbook
-  hosts: all
-  tasks:
-  - name: Validate initramfs preflight
-    ansible.builtin.include_role:
-      name: initramfs
-      tasks_from: preflight
-  - name: Create the initramfs and reboot to run the module
-    vars:
-      initramfs_add_modules: "my_extra_module"
-    ansible.builtin.include_role:
-      name: initramfs
+- name: Validate initramfs preflight
+  ansible.builtin.include_role:
+    name: initramfs
+    tasks_from: preflight
 ```
+
+If this is successful, the `bigboot` role continues to perform additional tasks and checks specific to its function. With that done, it moves on to `tasks/do_bigboot_reboot.yml` which [configures a dracut pre-mount hook](https://github.com/redhat-cop/infra.lvm_snapshots/blob/2.1.0/roles/bigboot/tasks/do_bigboot_reboot.yml#L1-L15) to prepare for the customized initramfs reboot:
+
+```yaml
+- name: Copy dracut pre-mount hook files
+  ansible.builtin.copy:
+    src: "{{ item }}"
+    dest: /usr/lib/dracut/modules.d/99extend_boot/
+    mode: "0554"
+  loop:
+    - bigboot.sh
+    - module-setup.sh
+    - sfdisk.static
+
+- name: Resolve and copy pre-mount hook wrapper script
+  ansible.builtin.template:
+    src: increase-boot-partition.sh.j2
+    dest: /usr/lib/dracut/modules.d/99extend_boot/increase-boot-partition.sh
+    mode: '0554'
+```
+
+After that, it [includes](https://github.com/redhat-cop/infra.lvm_snapshots/blob/2.1.0/roles/bigboot/tasks/do_bigboot_reboot.yml#L17-L21) the main `initramfs` role which will create a custom initramfs built with the dracut hook configured above, reboot the host to run the hook, and lastly, restore the original initramfs after the reboot:
+
+```yaml
+- name: Create the initramfs and reboot to run the module
+  vars:
+    initramfs_add_modules: "extend_boot"
+  ansible.builtin.include_role:
+    name: initramfs
+```
+
+Also, note that while the `initramfs` role handles restoring the original initramfs, it is up to the including play to clean up the dracut hook files it configured. We see this with the [Remove dracut extend boot module](https://github.com/redhat-cop/infra.lvm_snapshots/blob/2.1.0/roles/bigboot/tasks/do_bigboot_reboot.yml#L23-L26) task that immediately follows the task including the `initramfs` role:
+
+```yaml
+- name: Remove dracut extend boot module
+  ansible.builtin.file:
+    path: /usr/lib/dracut/modules.d/99extend_boot
+    state: absent
+```
+
+The `shrink_lv` role of this collection is another [example](https://github.com/redhat-cop/infra.lvm_snapshots/blob/2.1.0/roles/shrink_lv/tasks/main.yaml#L13-L37) of using the `initramfs` role that you may study.

collections/ansible_collections/infra/lvm_snapshots/roles/initramfs/tasks/main.yml

@@ -14,7 +14,7 @@
   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
@@ -22,11 +22,15 @@
   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: Reboot host
+- 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.import_role:
     name: verified_reboot
-
-- 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

collections/ansible_collections/infra/lvm_snapshots/roles/initramfs/tasks/preflight.yml

@@ -15,6 +15,7 @@
     cmd: /sbin/grubby --default-kernel
   register: initramfs_grubby_rc
   changed_when: false
+  check_mode: false
 
 - name: Parse default kernel version
   ansible.builtin.set_fact:

collections/ansible_collections/infra/lvm_snapshots/roles/shrink_lv/defaults/main.yaml

@@ -1 +0,0 @@
-shrink_lv_backup_extension: old

collections/ansible_collections/infra/lvm_snapshots/roles/shrink_lv/tasks/check_if_shrunk.yml

@@ -5,7 +5,6 @@
 
 - name: Assert that the filesystem has shrunk
   ansible.builtin.assert:
-    # yamllint disable-line rule:line-length
     that: (shrink_lv_set_device['size_total'] | int) <= (item['size'] | ansible.builtin.human_to_bytes)
     fail_msg: >
       Logical Volume {{ item['device'] }} was NOT shrunk as requested.

collections/ansible_collections/infra/lvm_snapshots/roles/shrink_lv/tasks/main.yaml

@@ -2,10 +2,10 @@
 - name: Make sure the required facts are available
   ansible.builtin.setup:
     gather_subset:
-      - "!all"
-      - "!min"
-      - kernel
-      - mounts
+    - "!all"
+    - "!min"
+    - kernel
+    - mounts
 
 - name: Run preflight checks
   ansible.builtin.include_tasks: preflight.yaml
@@ -16,8 +16,8 @@
     dest: /usr/lib/dracut/modules.d/99shrink_lv/
     mode: "0554"
   loop:
-    - module-setup.sh
-    - shrink.sh
+  - module-setup.sh
+  - shrink.sh
 
 - name: Resolve and copy the shrink-start script
   ansible.builtin.template:
@@ -39,9 +39,9 @@
 - name: Retrieve mount points
   ansible.builtin.setup:
     gather_subset:
-      - "!all"
-      - "!min"
-      - mounts
+    - "!all"
+    - "!min"
+    - mounts
 
 - name: Check if device has shrunken successfully
   ansible.builtin.include_tasks: check_if_shrunk.yml

collections/ansible_collections/infra/lvm_snapshots/roles/snapshot_create/tasks/check.yml

@@ -1,3 +1,9 @@
+- name: Validate default kernel is booted
+  ansible.builtin.include_role:
+    name: initramfs
+    tasks_from: preflight
+  when: snapshot_create_boot_backup
+
 - name: Verify that all volumes exist
   ansible.builtin.include_tasks: verify_volume_exists.yml
   loop: "{{ snapshot_create_volumes }}"

collections/ansible_collections/infra/lvm_snapshots/tests/README.md

@@ -0,0 +1,39 @@
+# Testing the LVM Snapshot Role
+
+## Prerequisites
+
+- All the tests are in the form of ansible playbooks.
+- All playbooks expect that the target machine will have a secondary storage device to be used for testing.
+
+## Variables
+The variables may be passed as part of the inventory or using a separate file.
+
+```yaml
+device: < device node without `/dev`. e.g. vdb >
+```
+
+## Ansible Configuration
+
+In order to run the tests from the repo without having to install them,
+the tests directory includes an [ansible.cfg](./ansible.cfg) file.
+Make sure to point to it when running the test playbook
+
+## Running a test
+
+### Inventory file
+
+In this example, the `device` parameter is passed in the `inventory.yml` file
+```yaml
+all:
+  hosts:
+    <FQDN of test machine>:
+      device: vdb
+```
+
+### Command line
+
+Running the [snapshot revert playbook](./test-revert-playbook.yml) test from the repo
+
+```bash
+ANSIBLE_CONFIG=./tests/ansible.cfg ansible-playbook -K  -i inventory.yml tests/test-revert-playbook.yml
+```

collections/ansible_collections/infra/lvm_snapshots/tests/ansible.cfg

@@ -0,0 +1,2 @@
+[defaults]
+roles_path=~/.ansible/roles:/usr/share/ansible/roles:/etc/ansible/roles:../roles

collections/ansible_collections/infra/lvm_snapshots/tests/create-snapshot.yml

@@ -0,0 +1,15 @@
+- name: Generate snapshot list out of volumes list
+  ansible.builtin.set_fact:
+    _snapshots: "{{ (_snapshots | default([])) + [{'vg': volume_group, 'lv': item.name, 'size': item.size}] }}"
+  loop: "{{ volumes }}"
+
+- name: Create the snapshot
+  vars:
+    snapshot_create_volumes: "{{ _snapshots }}"
+    snapshot_create_set_name: "{{ snapshot_set_name }}"
+  ansible.builtin.include_role:
+    name: snapshot_create
+
+- name: Verify that the snapshot was created
+  ansible.builtin.include_tasks: verify-snapshot-created.yml
+  loop: "{{ volumes }}"

collections/ansible_collections/infra/lvm_snapshots/tests/fill-snapshot.yml

@@ -0,0 +1,40 @@
+- name: Fill the volume
+  block:
+  - name: Set the retry count
+    ansible.builtin.set_fact:
+      _retry_count: "{{ (_retry_count | default('-1') | int) + 1 }}"
+
+  - name: Generate the Sub-Directory name
+    ansible.builtin.set_fact:
+      _sub_dir_name: "{{ lookup('community.general.random_string', upper=false, numbers=false, special=false) }}"
+
+  - name: Make a copy of the boot partition
+    ansible.builtin.copy:
+      src: /boot
+      dest: "{{ test_directory }}/{{ _sub_dir_name }}"
+      remote_src: true
+      mode: '0777'
+
+  - name: Get the status of the snapshot
+    ansible.builtin.command: "lvs --select 'lv_name = {{ volume_name }}_{{ snapshot_set_name }}' --reportformat json"
+    register: _lv_status_check
+    changed_when: false
+
+  - name: Store the snapshot data_percent
+    ansible.builtin.set_fact:
+      _snapshot_data_percent: "{{ ((_lv_status_check.stdout | from_json).report[0].lv[0].data_percent) }}"
+
+  - name: Check if snapshot is full enough
+    ansible.builtin.assert:
+      that: _snapshot_data_percent|float > snapshot_fill_percent|float
+      quiet: true
+
+  rescue:
+  - name: Check the retry count to avoid endless loop
+    ansible.builtin.assert:
+      that: (_retry_count|int) < (snapshot_max_retry|int)
+      fail_msg: "Ended after {{ snapshot_max_retry }} retries"
+      success_msg: "Volume is not full enough ({{ _snapshot_data_percent }}) - Run again..."
+
+  - name: Include the same tasks file again
+    ansible.builtin.include_tasks: fill-snapshot.yml

collections/ansible_collections/infra/lvm_snapshots/tests/post-test-clean-volume.yml

@@ -0,0 +1,11 @@
+- name: Unmount the "{{ item.directory }}"
+  ansible.posix.mount:
+    path: "{{ item.directory }}"
+    state: absent
+
+- name: Remove the logical volume
+  community.general.lvol:
+    vg: "{{ volume_group }}"
+    lv: "{{ item.name }}"
+    force: true
+    state: absent

collections/ansible_collections/infra/lvm_snapshots/tests/post-test-tasks.yml

@@ -0,0 +1,25 @@
+- name: Cleanup the volumes
+  ansible.builtin.include_tasks: post-test-clean-volume.yml
+  loop: "{{ volumes }}"
+
+- name: Remove the volume group
+  community.general.lvg:
+    vg: "{{ volume_group }}"
+    pvs: "/dev/{{ device }}1"
+    state: absent
+
+- name: Remove the PV
+  ansible.builtin.command: "pvremove /dev/{{ device }}1"
+  changed_when: true
+
+- name: Cleanup the system.devices file
+  ansible.builtin.lineinfile:
+    path: /etc/lvm/devices/system.devices
+    regexp: "IDTYPE=devname IDNAME=/dev/{{ device }}1 DEVNAME=/dev/{{ device }}1 PVID=. PART=1"
+    state: absent
+
+- name: Delete the partition
+  community.general.parted:
+    device: "/dev/{{ device }}"
+    number: 1
+    state: absent

collections/ansible_collections/infra/lvm_snapshots/tests/pre-test-prepare-volume.yml

@@ -0,0 +1,18 @@
+- name: Create the logical volume
+  community.general.lvol:
+    vg: "{{ volume_group }}"
+    lv: "{{ item.name }}"
+    size: "{{ item.size }}"
+    force: true
+
+- name: Format the ext4 filesystem
+  community.general.filesystem:
+    fstype: ext4
+    dev: "/dev/{{ volume_group }}/{{ item.name }}"
+
+- name: Mount the lv on "{{ item.directory }}"
+  ansible.posix.mount:
+    path: "{{ item.directory }}"
+    src: "/dev/{{ volume_group }}/{{ item.name }}"
+    fstype: ext4
+    state: mounted

collections/ansible_collections/infra/lvm_snapshots/tests/pre-test-tasks.yml

@@ -0,0 +1,23 @@
+- name: Create partition
+  community.general.parted:
+    device: "/dev/{{ device }}"
+    number: 1
+    part_end: 9GiB
+    flags:
+    - lvm
+    state: present
+
+- name: Install lvm2 dependency
+  ansible.builtin.package:
+    name: lvm2
+    state: present
+
+- name: Create the volume group
+  community.general.lvg:
+    vg: "{{ volume_group }}"
+    pvs: "/dev/{{ device }}1"
+    pesize: 16
+
+- name: Create and prepare the volumes
+  ansible.builtin.include_tasks: pre-test-prepare-volume.yml
+  loop: "{{ volumes }}"

collections/ansible_collections/infra/lvm_snapshots/tests/verify-snapshot-created.yml

@@ -0,0 +1,24 @@
+- name: Run lvs
+  ansible.builtin.command: lvs --select 'vg_name = {{ volume_group }} && origin = {{ item.name }}' --reportformat json
+  register: lvs_response
+  changed_when: false
+
+- name: Parse report
+  ansible.builtin.set_fact:
+    lv_snapshot_array: "{{ (lvs_response.stdout | from_json).report[0].lv }}"
+
+- name: Verify that the the snapshot exists
+  ansible.builtin.assert:
+    that: (lv_snapshot_array | length) == 1
+    fail_msg: >
+      The snapshot for {{ item.name }} was not created
+
+- name: Get the snapshot name
+  ansible.builtin.set_fact:
+    snapshot_name: "{{ lv_snapshot_array[0].lv_name | default('n/a') }}"
+
+- name: Verify that the the snapshot was named correctly
+  ansible.builtin.assert:
+    that: snapshot_name == item.name + '_' + snapshot_set_name
+    fail_msg: >
+      Snapshot name '{{ snapshot_name }}' is not as expected {{ item.name }}_{{ snapshot_set_name }}

collections/ansible_collections/infra/lvm_snapshots/tests/verify-snapshot-not-exist.yml

@@ -0,0 +1,16 @@
+- name: Run lvs
+  ansible.builtin.command: lvs --select 'vg_name = {{ volume_group }} && lv_name = {{ volume_name }}_{{ snapshot_set_name }}' --reportformat json
+  register: lvs_response
+  changed_when: false
+
+- name: Parse report
+  ansible.builtin.set_fact:
+    lv_snapshot_report_array: "{{ (lvs_response.stdout | from_json).report[0].lv }}"
+
+- name: Verify that the snapshot no longer exists
+  ansible.builtin.assert:
+    that: (lv_snapshot_report_array | length) == 0
+    fail_msg: >
+      The snapshot '{{ volume_name }}_{{ snapshot_set_name }}'' for
+      volume '{{ volume_name }}' in volume group '{{ volume_group }}'
+      still exists

filter_plugins/fallback_space_check.py

@@ -0,0 +1,66 @@
+#!/usr/bin/python3
+
+# bigboot_size: "{{ bigboot_size_expansion_mb[:-2] | int | get_block_size_up }}"
+
+class FilterModule (object):
+  def filters (self):
+    return {
+      'bigboot_fallback_size': self.bigboot_fallback_size,
+      'moo': self.moo,
+    }
+
+  def bigboot_fallback_size(self, fallback_size):
+    return ('{}{}'.format(fallback_size, 'M'))
+
+  def moo(self, a_variable):
+    a_new_variable = (str(a_variable) + '~~~~MOOOOOOOOOOOOOOOOOOOOOOOOO! => ' + '%s' % type(a_variable))
+    return a_new_variable
+
+
+
+# import shutil
+# import os
+
+# def check_mount_space(mount_path, min_space_gb=1):
+#     try:
+#         # Get disk usage statistics for the mount point
+#         disk_usage = shutil.disk_usage(mount_path)
+
+#         # Convert bytes to gigabytes
+#         free_space_gb = disk_usage.free / (1024 ** 3)
+
+#         print(f"Mount point: {mount_path}")
+#         print(f"Free space: {free_space_gb:.2f} GB")
+
+#         if free_space_gb > min_space_gb:
+#             print("✓ More than 1GB available")
+#             return True
+#         else:
+#             print("✗ Less than 1GB available")
+#             return False
+
+#     except Exception as e:
+#         print(f"Error checking {mount_path}: {str(e)}")
+#         return False
+
+# def check_all_mounts():
+#     # Read mount points from /proc/mounts
+#     with open('/proc/mounts', 'r') as f:
+#         mounts = f.readlines()
+
+#     results = []
+#     for mount in mounts:
+#         # Split the mount line and get the mount point (second field)
+#         mount_point = mount.split()[1]
+
+#         # Skip some virtual filesystems
+#         if mount_point.startswith(('/proc', '/sys', '/dev', '/run')):
+#             continue
+
+#         results.append(check_mount_space(mount_point))
+
+#     return results
+
+# if __name__ == "__main__":
+#     print("Checking mount points for available space...")
+#     check_all_mounts()

filter_plugins/get_block_size.py

@@ -7,7 +7,9 @@ class FilterModule (object):
     return {
       'get_block_size_up': self.get_block_size_up,
       'get_block_size_down': self.get_block_size_down,
-      'moo': self.moo,
+      'get_block_size_up_bytes': self.get_block_size_up_bytes,
+      'get_block_size_down_bytes': self.get_block_size_down_bytes,
+      'moo': self.moo
     }
 
 
@@ -21,6 +23,16 @@ class FilterModule (object):
         start_size -= 1
     return ('{}{}'.format(start_size, 'M'))
 
+  def get_block_size_up_bytes(self, start_size):
+    while  start_size % BLOCK_SIZE != 0:
+        start_size += 1
+    return ('{}'.format(start_size))
+
+  def get_block_size_down_bytes(self, start_size):
+    while  start_size % BLOCK_SIZE != 0:
+        start_size -= 1
+    return ('{}'.format(start_size))
+
   def moo(self, a_variable):
     a_new_variable = (str(a_variable) + '~~~~MOOOOOOOOOOOOOOOOOOOOOOOOO! => ' + '%s' % type(a_variable))
     return a_new_variable

scripts/pvsqueeze.sh

@@ -1,10 +1,14 @@
 #!/bin/bash
 #
-# pvsqueeze - Squeeze PEs into free holes
+# pvsqueeze - Squeeze linear extents into free holes
 #
-# This script iteratively moves linear (allocated to LV) PEs to fill in free
-# holes found in a PV segement map. The end result is that all free PEs are
-# at the end of the PV. Use this script as required in anger!
+# This script iteratively moves linear (allocated to LV) extents to fill in
+# free holes found in a PV segment map. The end result is that all free
+# extents are at the end of the PV. Use this script in anger as required!
+#
+# The script outputs the PV segment map before moving anything, then iterates
+# stuffing extents in each free hole until there are no more except for the
+# last one, and finally outputs the PV segment map again showing the changes.
 #
 
 # Usage
@@ -51,6 +55,7 @@ while true; do
   [[ $free_start -gt $move_start ]] && break
 
   # Move last linear PEs to the free segment
+  [[ $free_size -gt $move_size ]] && free_size=$move_size
   from_range="$pvdev:$((move_start+move_size-free_size))-$((move_start+move_size-1))"
   to_range="$pvdev:$((free_start))-$((free_start+free_size))"
   echo "Moving $from_range to $to_range..."

tasks/capture_boot_device_details.yml

@@ -21,14 +21,6 @@
     bigboot_expansion_diff:
       "{{ bigboot_size_target | human_to_bytes - bigboot_boot_partsize | human_to_bytes }}"
 
-- name: Convert size difference to MB
-  ansible.builtin.set_fact:
-    bigboot_size_expansion_mb: "{{ bigboot_expansion_diff | int | human_readable(unit='M') }}"
-
-- name: Set bigboot size 4k aligned
-  ansible.builtin.set_fact:
-    bigboot_size: "{{ bigboot_size_expansion_mb[:-2] | int | get_block_size_up }}"
-
 - name: Validate if we need to expand boot
   block:
     - name: Set flag for Bigboot execution
@@ -42,10 +34,25 @@
         success_msg: The /boot partition is already at the desired size
 
   rescue:
-    - name: Set flag for Bigboot execution
-      ansible.builtin.set_fact:
-        bigboot_execute_bigboot: true
+    - name: "Check if /boot is already at or above {{ bigboot_size_min }}"
+      block:
+        - name: "Assert that /boot is already at or above {{ bigboot_size_min }}"
+          ansible.builtin.assert:
+            that: bigboot_boot_partsize | human_to_bytes >= bigboot_size_min | human_to_bytes
+            success_msg: >
+              /boot partition size is already at least {{ bigboot_size_min }}
+              or greater. Nothing to do."
+            fail_msg: >
+              /boot partition size is less than {{ bigboot_size_min }}.
+              Expansion of /boot is required.
 
-    - name: Expansion of /boot required
-      ansible.builtin.debug:
-        msg: "Will need to expand /boot by an additional {{ bigboot_size }}."
+      rescue:
+        - name: Set flag for Bigboot execution
+          ansible.builtin.set_fact:
+            bigboot_execute_bigboot: true
+
+        - name: Expansion of /boot required
+          ansible.builtin.debug:
+            msg: >
+              Will attempt to increase to {{ bigboot_size_target }}, or
+              {{ bigboot_size_min }} at the minimum."

tasks/capture_lv_device_details.yml

@@ -42,14 +42,36 @@
     bigboot_lv_info: "{{ ansible_facts.mounts \
       | selectattr('device', 'equalto', bigboot_adjacent_lvm_device) | first }}"
 
-- name: Assert that there is space on the logical volume for shrinkage
-  ansible.builtin.assert:
-    that: bigboot_lv_info.size_available > bigboot_expansion_diff | int
-    fail_msg: There is not enough space available for LV shrinking.
+# - name: Assert that there is space on the logical volume for shrinkage
+#   ansible.builtin.assert:
+#     that: bigboot_lv_info.size_available > bigboot_expansion_diff | int
+#     fail_msg: There is not enough space available for LV shrinking.
 
-- name: Capture shrink size for logical volume
+- name: Capture UUID for target volume
   ansible.builtin.set_fact:
-    bigboot_lv_shrink_size: "{{ bigboot_lv_info.size_total - bigboot_expansion_diff | int }}"
+    bigboot_lv_uuid: "{{ ansible_facts['mounts'] | selectattr('device', 'equalto', bigboot_adjacent_lvm_device) | map(attribute='uuid') | first }}"
+
+- name: Capture block device information for target logical volume
+  ansible.builtin.set_fact:
+    bigboot_lv_dm: "{{ ansible_device_links['uuids'] | dict2items | selectattr('value', 'contains', bigboot_lv_uuid) | map(attribute='key') | first }}"
+
+- name: Set initial sizes for logical volume and fallback size target
+  ansible.builtin.set_fact:
+    bigboot_lv_partsize: "{{ ansible_devices[bigboot_lv_dm]['sectors'] | int * ansible_devices[bigboot_lv_dm]['sectorsize'] | int }}"
+    bigboot_size_target_fallback: "{{ bigboot_size_target | human_to_bytes }}"
+
+- name: Check available space and fallback to lower /boot size if required
+  ansible.builtin.include_tasks: check_space_fallback.yml
+
+- name: Capture shrink and fallback sizes
+  ansible.builtin.set_fact:
+    # we need to get the BLOCK size total, not the filesystem
+    bigboot_lv_shrink_size: "{{ (bigboot_lv_partsize | int - bigboot_expansion_diff | int) | get_block_size_down_bytes }}"
+    bigboot_size_target_fallback: "{{ bigboot_size_target_fallback | int | human_readable(unit='G') | regex_replace('\\sGB', 'G') }}"
+
+- name: Debug bigboot_lv_shrink_size and bigboot_size_target_fallback
+  ansible.builtin.debug:
+    msg: "{{ bigboot_lv_shrink_size | int | human_readable(unit='G') }} ({{ bigboot_lv_shrink_size | int | human_readable(unit='M') | regex_replace('\\.\\d+\\s+MB') | int | get_block_size_down }}) <-> {{ bigboot_size_target_fallback }} | {{ bigboot_expansion_diff }}"
 
 - name: Capture logical volume name
   ansible.builtin.shell:
@@ -62,7 +84,7 @@
 
 - name: Format logical volume name
   ansible.builtin.set_fact:
-    bigboot_lv_vg_name: "{{ bigboot_lv_vg_name.stdout | regex_replace('VG\\s+Name\\s+(.*)$', '\\1') }}"
+    bigboot_lv_vg_name: "{{ bigboot_lv_vg_name['stdout'] | regex_replace('VG\\s+Name\\s+(.*)$', '\\1') }}"
 
 - name: Capture volume group free PE
   ansible.builtin.shell:
@@ -73,6 +95,26 @@
   changed_when: false
   register: bigboot_lv_vg_free_pe
 
+- name: Capture volume group PE size
+  ansible.builtin.shell:
+    cmd: |
+      set -o pipefail
+      vgdisplay {{ bigboot_lv_vg_name | trim }} | grep -i 'pe size'
+    executable: /bin/bash
+  changed_when: false
+  register: bigboot_lv_vg_pe_capture
+
+- name: Set PE size
+  ansible.builtin.set_fact:
+    bigboot_lv_vg_pe_size: "{{ bigboot_lv_vg_pe_capture | regex_replace('^.*\\s+(\\d+.\\d+).*$', '\\1M') | human_to_bytes }}"
+
+- name: Subtract one additional PE for shrinking
+  ansible.builtin.set_fact:
+    bigboot_lv_shrink_size: "{{ bigboot_lv_shrink_size | int - bigboot_lv_vg_pe_size | int }}"
+
+# - name: Kill the play
+#   ansible.builtin.meta: end_host
+
 - name: Capture the PV device
   ansible.builtin.set_fact:
     bigboot_pv: "{{ bigboot_boot_mount['device'][:-1] }}{{ bigboot_boot_mount['device'][-1:] | int + 1 }}"
@@ -84,23 +126,24 @@
     #   Free  PE / Size       189 / 756.00 MiB"
     #   Free  PE / Size       414 / <1.62 GiB
     #   Free  PE / Size       0 / 0
-    bigboot_lv_vg_free_pe: "{{ bigboot_lv_vg_free_pe.stdout | regex_replace('^.*/.*/\\s+[<]?(.*)', '\\1') }}"
+    bigboot_lv_vg_free_pe: "{{ bigboot_lv_vg_free_pe['stdout'] | regex_replace('^.*/.*/\\s+[<]?(.*)', '\\1') }}"
 
-- name: Get size in MB for PE and
+- name: Get size in MB for available PE
   ansible.builtin.set_fact:
     bigboot_lv_pe_size_in_mb:
       "{{ bigboot_lv_vg_free_pe | regex_replace('i|\\s+|<', '') | human_to_bytes | human_readable(unit='M') }}"
 
 - name: Verify available PE for the volume group
   block:
-    - name: Set flag for Shrink_LV execution
+    - name: Set variables required for shrinking the target LV
       ansible.builtin.set_fact:
         bigboot_execute_shrink_lv: false
+        bigboot_expansion_diff_mb: "{{ bigboot_expansion_diff | int | human_readable(unit='M') }}"
 
-    - name: Assert if we need to execute the shrink_lv role to gain free PE
+    - name: Assert if we need to shrink the logical volume to gain PE
       ansible.builtin.assert:
-        that: (bigboot_lv_pe_size_in_mb[:-3] | int | round) | int > bigboot_size[:-1] | int
-        fail_msg: Not enough PE to expand /boot.
+        that: (bigboot_lv_pe_size_in_mb[:-3] | int) >= (bigboot_expansion_diff_mb[:-3] | int)
+        fail_msg: Not enough PE to expand /boot. Will need to shrink target LV.
 
   rescue:
     - name: Set flag for Shrink_LV execution

tasks/check_space_fallback.yml

@@ -0,0 +1,36 @@
+---
+- name: Debug bigboot_expansion_diff
+  ansible.builtin.debug:
+    msg: "{{ bigboot_expansion_diff }} + {{ bigboot_size_target_fallback }} <-> {{ bigboot_boot_partsize }}"
+
+- name: Fail if /boot can't expand to at least 1GB
+  ansible.builtin.assert:
+    that: bigboot_size_target_fallback | int >= bigboot_size_min | human_to_bytes
+    fail_msg:
+      "{{ bigboot_size_target_fallback | int | human_readable(unit='M') }} is less than the minimum required size of {{ bigboot_size_min }}."
+
+- name: Verify available space and re-check if needed
+  block:
+    - name: Assert that there is space on the logical volume for shrinkage
+      ansible.builtin.assert:
+        that: bigboot_lv_info['size_available'] > bigboot_expansion_diff | int
+        fail_msg: There is not enough free space available to shrink the filesystem
+
+    - name: Assert that there will be enough space left over on the target LV
+      ansible.builtin.assert:
+        that: (bigboot_lv_info['size_available'] - bigboot_expansion_diff | int) >= bigboot_lv_size_min | human_to_bytes
+        # success_msg: "There will be enough space left over with a boot size of {{ bigboot_size_target_fallback | int | human_readable(unit='G') }}. ({{ (bigboot_lv_info['size_total'] - bigboot_expansion_diff | int) | human_readable(unit='B') }})"
+        fail_msg: "There will NOT be enough space left over with a boot size of {{ bigboot_size_target_fallback | int | human_readable(unit='G') }}."
+
+  rescue:
+    - name: "Decrement size target by {{ bigboot_size_decrement }}"
+      ansible.builtin.set_fact:
+        bigboot_size_target_fallback: "{{ bigboot_size_target_fallback | int - bigboot_size_decrement | human_to_bytes }}"
+
+    - name: Update required expansion space
+      ansible.builtin.set_fact:
+        bigboot_expansion_diff:
+          "{{ (bigboot_size_target_fallback | int - bigboot_boot_partsize | human_to_bytes) }}"
+
+    - name: Re-check disk space - RESCUE
+      ansible.builtin.include_tasks: check_space_fallback.yml

tasks/cleanup.yml

@@ -40,11 +40,10 @@
 # - name: Check for Bigboot state log and restore services to pre-Bigboot state
 #   ansible.builtin.import_tasks: tasks/restore_services.yml
 
-# - name: Cleanup previous Bigboot state log if present
-#   ansible.builtin.file:
-#     path: "{{ bigboot_disabled_services_log }}"
-#     state: absent
-#   when:
-#     - bigboot_disabled_services_log_stat['stat']['exists'] | bool
+- name: Cleanup old Bigboot service state log if present
+  ansible.builtin.file:
+    path: "{{ bigboot_disabled_services_log }}"
+    state: absent
+
 
 ...

tasks/rear_nfs_exports.yml

@@ -6,4 +6,4 @@
 
 - name: Include NFS export role
   ansible.builtin.include_role:
-    name: rhc.rear.say_hi
+    name: rhc.rear.nfs_export

tasks/validate_rear_backup.yml

@@ -0,0 +1,9 @@
+---
+- name: Validate ReaR backup completion
+  ansible.builtin.command:
+    cmd: "grep 'Finished running mkbackup workflow' /var/log/rear/rear-{{ ansible_hostname }}.log"
+  register: validate_backup_log
+
+- name: Debug validate_backup_log
+  ansible.builtin.debug:
+    var: validate_backup_log

vars/bigboot_vars.yml

@@ -1,37 +1,14 @@
 ---
 ansible_ssh_retries: 10
 
-bigboot_size_target: 1G
+bigboot_size_target: 2G
+bigboot_size_min: 1G
+bigboot_size_decrement: 250M
 
-bigboot_post_reboot_delay: 70
-bigboot_reboot_timeout: 1800
-
-bigboot_skip_rear_backup: false
-
-# Max value in minutes for services timeout threshold:
-bigboot_service_max_timeout: 5
-
-# List of services incompatible with calculations
-# to obtain required disk information:
-#
-# (These services will ALWAYS be disabled)
-bigboot_incompatible_services:
-  - docker.service
-  - named-chroot.service
-
-# List of services which will be excluded from being
-# disabled during Bigboot execution:
-#
-# (Services listed in `bigboot_incompatible_services`
-# will ALWAYS be disabled regardless if they are protected or not)
-bigboot_protected_services:
-  - sshd.service
-  - user@0.service
-  - network
-  - rhnsd.service
-  - rhnsd
-  - boksm.service
-  - SplunkForwarder.service
+bigboot_lv_size_min: 1G
 
 # Filename of disabled services log:
-bigboot_disabled_services_log: /var/ipe/ipu/el7to8/bigboot_disabled_services.log
+bigboot_disabled_services_log: /var/IPE/IPU/el7to8/bigboot_disabled_services.log
+
+# Define ReaR backup workflow:
+rear_backup_workflow: bigboot

vars/bigboot_vars.yml.old

@@ -0,0 +1,43 @@
+---
+ansible_ssh_retries: 10
+
+bigboot_size_target: 1G
+
+bigboot_post_reboot_delay: 70
+bigboot_reboot_timeout: 1800
+
+bigboot_skip_rear_backup: false
+
+# Max value in minutes for services timeout threshold:
+bigboot_service_max_timeout: 5
+
+# List of services incompatible with calculations
+# to obtain required disk information:
+#
+# (These services will ALWAYS be disabled)
+bigboot_incompatible_services:
+  - docker.service
+  - named-chroot.service
+
+# List of services which will be excluded from being
+# disabled during Bigboot execution:
+#
+# (Services listed in `bigboot_incompatible_services`
+# will ALWAYS be disabled regardless if they are protected or not)
+bigboot_protected_services:
+  - sshd.service
+  - user@0.service
+  - network
+  - rhnsd.service
+  - rhnsd
+  - boksm.service
+  - SplunkForwarder.service
+
+# Filename of disabled services log:
+bigboot_disabled_services_log: /var/ipe/ipu/el7to8/bigboot_disabled_services.log
+
+
+bigboot_backup_success_path: "/var/log/IPE/IPU"
+bigboot_backup_success_file: "{{ bigboot_backup_success_path }}/bigboot_rear_success"
+bigboot_nfs_backup_share: "/backups/bigboot"
+bigboot_nfs_backup_share_fsid: 20