ansible_plays/shrink_lv
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Add tasks to capture block size instead of filesystem size

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This commit is contained in:
Chris Hammer 2025-06-04 22:50:46 -04:00
parent 9a9aa83adb
commit 5cb1b9d68f
2 changed files with 14 additions and 4 deletions
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16
tasks/capture_lv_device_details.yml
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@ -47,8 +47,17 @@
# that: bigboot_lv_info.size_available > bigboot_expansion_diff | int
# fail_msg: There is not enough space available for LV shrinking.
- name: Set initial target size for fallback
- name: Capture UUID for target volume
ansible.builtin.set_fact:
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
@ -56,12 +65,13 @@
- name: Capture shrink and fallback sizes
ansible.builtin.set_fact:
bigboot_lv_shrink_size: "{{ bigboot_lv_info['size_total'] - bigboot_expansion_diff | int }}"
# we need to get the BLOCK size total, not the filesystem
bigboot_lv_shrink_size: "{{ bigboot_lv_partsize | int - bigboot_expansion_diff | int }}"
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_size_target_fallback }} | {{ bigboot_expansion_diff }}"
msg: "{{ bigboot_lv_shrink_size | int | human_readable(unit='G') }} ({{ bigboot_lv_shrink_size }}) <-> {{ bigboot_size_target_fallback }} | {{ bigboot_expansion_diff }}"
# - name: Kill the play
# ansible.builtin.meta: end_host

2
tasks/check_space_fallback.yml
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@ -19,7 +19,7 @@
- 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_available'] - bigboot_expansion_diff | int) | human_readable(unit='B') }})"
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: