shrink_lv/tasks/capture_lv_device_details.yml
2024-06-06 14:44:12 -04:00

86 lines
3.0 KiB
YAML

---
- name: Capture logical volume adjacent to /boot
ansible.builtin.shell:
cmd: |
set -o pipefail
lsblk -pl -o name,type,mountpoint {{ bigboot_boot_mount['device'][:-1] }} \
| grep -vi swap | grep lvm | head -1 | awk '{ print $1}'
executable: /bin/bash
changed_when: false
register: bigboot_adjacent_lvm
failed_when: bigboot_adjacent_lvm['rc'] not in [0,141]
- name: Set adjacent LVM device name
ansible.builtin.set_fact:
bigboot_adjacent_lvm_device: "{{ bigboot_adjacent_lvm.stdout }}"
- name: Get logical volume mount information
ansible.builtin.set_fact:
bigboot_lv_info: "{{ ansible_facts.mounts \
| selectattr('device', 'equalto', bigboot_adjacent_lvm_device) | first }}"
- name: Assert that there is space on the logical volume for shrinkage
ansible.builtin.assert:
that: bigboot_lv_info.size_available > bigboot_expansion_diff | int
fail_msg: There is not enough space available for LV shrinking.
- name: Capture shrink size for logical volume
ansible.builtin.set_fact:
bigboot_lv_shrink_size: "{{ bigboot_lv_info.size_total - bigboot_expansion_diff | int }}"
- name: Capture logical volume name
ansible.builtin.shell:
cmd: |
set -o pipefail
lvdisplay {{ bigboot_adjacent_lvm_device }} | grep -i 'vg name'
executable: /bin/bash
changed_when: false
register: bigboot_lv_vg_name
- name: Format logical volume name
ansible.builtin.set_fact:
bigboot_lv_vg_name: "{{ bigboot_lv_vg_name.stdout | regex_replace('VG\\s+Name\\s+(.*)$', '\\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: 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 if there's available PE or not and execute Shrink_LV
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