lvol modules does not compute the correct size when using 100%VG with mirrored LVM volume

[pstumpf-wizai]

Summary

The issue was already reported in https://github.com/ansible/ansible/issues/64250 for the old repository, but not migrated. I have nothing much to add to the original report. The problem still persists.

Issue Type

Bug Report

Component Name

lvol

Ansible Version

$ ansible --version
ansible [core 2.16.4]
  config file = /home/pascal/.ansible.cfg
  configured module search path = ['/home/pascal/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /usr/local/lib/python3.10/site-packages/ansible
  ansible collection location = /home/pascal/.ansible/collections:/usr/share/ansible/collections
  executable location = /usr/local/bin/ansible
  python version = 3.10.13 (main, Mar 15 2024, 07:36:23) [Clang 16.0.6 ] (/usr/local/bin/python3.10)
  jinja version = 3.1.3
  libyaml = True

Community.general Version

$ ansible-galaxy collection list community.general
ansible [core 2.16.4]
  config file = /home/pascal/.ansible.cfg
  configured module search path = ['/home/pascal/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /usr/local/lib/python3.10/site-packages/ansible
  ansible collection location = /home/pascal/.ansible/collections:/usr/share/ansible/collections
  executable location = /usr/local/bin/ansible
  python version = 3.10.13 (main, Mar 15 2024, 07:36:23) [Clang 16.0.6 ] (/usr/local/bin/python3.10)
  jinja version = 3.1.3
  libyaml = True
~/src/hypervisors $ ansible-galaxy collection list community.general

# /usr/local/lib/python3.10/site-packages/ansible_collections
Collection        Version
----------------- -------
community.general 8.4.0

Configuration

$ ansible-config dump --only-changed
ANSIBLE_NOCOLOR(env: ANSIBLE_NOCOLOR) = True
CONFIG_FILE() = /home/pascal/.ansible.cfg
EDITOR(env: EDITOR) = vi
PAGER(env: PAGER) = more

OS / Environment

Target: Debian 12.

Steps to Reproduce

community.general.lvol:
    vg: "foo"
    lv: "bar"
    size: "100%VG"
    opts: "-m1"

Expected Results

The module is idempotent, i.e. does nothing on subsequent runs.

Actual Results

msg: Logical Volume bar could not be extended. Not enough free space left (1526184.0m required / 0.0m available)

Code of Conduct

• [X] I agree to follow the Ansible Code of Conduct