shrink_lv/tasks/capture_lv_device_details.yml
2025-05-05 18:16:24 -04:00

127 lines
4.4 KiB
YAML

---
- name: Capture all logical volume paritions on /boot device
ansible.builtin.shell:
cmd: |
set -o pipefail
lsblk -pl -o name,type {{ bigboot_boot_mount['device'][:-1] }} | grep -i lvm
executable: /bin/bash
changed_when: false
failed_when: bigboot_adjacent_lvm['rc'] not in [0, 141]
register: bigboot_adjacent_lvm
- name: Map the device to its mount point if applicable
ansible.builtin.set_fact:
bigboot_adjacent_lvm_devices: "{{ bigboot_adjacent_lvm_devices | default([]) \
| combine({item | split(' ') | first: ansible_facts['mounts'] \
| selectattr('device', 'equalto', item | split(' ') | first) \
| map(attribute='mount')}) }}"
loop: "{{ bigboot_adjacent_lvm['stdout_lines'] }}"
- name: Capture the device name of the mounted logical volumes
ansible.builtin.set_fact:
bigboot_lvm_mounts: "{{ bigboot_lvm_mounts | default([]) + [item['key']] }}"
loop: "{{ bigboot_adjacent_lvm_devices | dict2items }}"
when: item['value'] | regex_search('[/a-zA-Z]')
- name: Debug bigboot_lvm_mounts
ansible.builtin.debug:
var: bigboot_lvm_mounts
verbosity: 1
- name: Set adjacent LVM device name
ansible.builtin.set_fact:
bigboot_adjacent_lvm_device: "{{ bigboot_lvm_mounts | first }}"
- name: Debug bigboot_adjacent_lvm_device
ansible.builtin.debug:
var: bigboot_adjacent_lvm_device
verbosity: 1
- name: Get logical volume mount information
ansible.builtin.set_fact:
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: Copy size target to temporary variable
ansible.builtin.set_fact:
bigboot_size_target_fallback: "{{ bigboot_size_target | human_to_bytes }}"
- name: Check for available space and fallback if needed
ansible.builtin.include_tasks: check_space_fallback.yml
- name: Capture shrink size for logical volume
ansible.builtin.set_fact:
bigboot_lv_shrink_size: "{{ bigboot_lv_info.size_total - bigboot_expansion_diff | int }}"
- name: Debug bigboot_lv_shrink_size
ansible.builtin.debug:
msg: "{{ bigboot_lv_shrink_size | int | human_readable(unit='M') }}"
- name: Kill the play
ansible.builtin.meta: end_host
- name: Capture logical volume name
ansible.builtin.shell:
cmd: |
set -o pipefail
lvdisplay {{ bigboot_adjacent_lvm_device }} | grep -i 'vg name'
executable: /bin/bash
changed_when: false
register: bigboot_lv_vg_name
- 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') }}"
- name: Capture volume group free PE
ansible.builtin.shell:
cmd: |
set -o pipefail
vgdisplay {{ bigboot_lv_vg_name | trim }} | grep -i 'free'
executable: /bin/bash
changed_when: false
register: bigboot_lv_vg_free_pe
- name: Capture the PV device
ansible.builtin.set_fact:
bigboot_pv: "{{ bigboot_boot_mount['device'][:-1] }}{{ bigboot_boot_mount['device'][-1:] | int + 1 }}"
- name: Format logical volume free PE
ansible.builtin.set_fact:
# Ex:
# Free PE / Size 320 / 1.25 GiB"
# 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') }}"
- name: Get size in MB for PE and
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
ansible.builtin.set_fact:
bigboot_execute_shrink_lv: false
- name: Assert if we need to execute the shrink_lv role to gain free 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.
rescue:
- name: Set flag for Shrink_LV execution
ansible.builtin.set_fact:
bigboot_execute_shrink_lv: true
when:
- bigboot_execute_bigboot | bool
- bigboot_expansion_diff | int > 0