lvol - lvcreate snapshot "**%ORIGIN" fails

[draculacowboy83]

SUMMARY

When i want to create a lvm snapshot with the module lvol and the option size : 20%ORIGIN for example,
it fails :

"Snapshot Volumes are not supported"

This option is valid according to lvcreate(8).

ISSUE TYPE

• Bug Report

COMPONENT NAME

lvol

ANSIBLE VERSION

ansible --version
ansible 2.9.14
  config file = /etc/ansible/ansible.cfg
  configured module search path = ['/var/lib/awx/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /usr/lib/python3.6/site-packages/ansible
  executable location = /usr/bin/ansible
  python version = 3.6.8 (default, Apr 16 2020, 01:36:27) [GCC 8.3.1 20191121 (Red Hat 8.3.1-5)]

CONFIGURATION

OS / ENVIRONMENT

OS : Linux REDHAT 7

STEPS TO REPRODUCE

- name: "[BACKUP] create snapshots" 
  lvol:
    vg: "{{ item.value.vg }}"
    lv: "{{ item.key }}"
    snapshot: "{{ item.key }}_{{ snap_suffix }}"
    size: 20%ORIGIN
  with_dict: "{{ ansible_lvm.lvs }}" 

EXPECTED RESULTS

Creation of lvm snapshot.
On redhat 7 :
lvcreate -s -l 20%ORIGIN --name lv_***_snap_suffix /dev/vg***/lv_***
Logical volume "lv_***_snap_suffix" created.

ACTUAL RESULTS

{
    "msg": "Snapshot Volumes are not supported",
    "invocation": {
        "module_args": {
            "pvs": null,
            "force": false,
            "vg": "vg01",
            "lv": "lv_***",
            "resizefs": false,
            "state": "present",
            "thinpool": null,
            "snapshot": "lv_***_snap_suffix",
            "active": true,
            "shrink": true,
            "opts": null,
            "size": "20%ORIGIN"
        }
    },
    "_ansible_no_log": false,
    "changed": false,
    "item": {
        "key": "lv_***",
        "value": {
            "size_g": "***",
            "vg": "vg***"
        }
    },
    "ansible_loop_var": "item",
    "_ansible_item_label": {
        "key": "lv_***",
        "value": {
            "size_g": "***",
            "vg": "vg***"
        }
    }
}

[ansibullbot]

Files identified in the description:
None

If these files are inaccurate, please update the component name section of the description or use the !component bot command.

click here for bot help

[ansibullbot]

Files identified in the description:

• plugins/modules/system/lvol.py

If these files are inaccurate, please update the component name section of the description or use the !component bot command.

click here for bot help

[ansibullbot]

cc @abulimov @jhoekx
click here for bot help

[ansibullbot]

cc @unkaputtbar112 @zigaSRC
click here for bot help

[ansibullbot]

Files identified in the description:

• plugins/modules/lvol.py

If these files are incorrect, please update the component name section of the description or use the !component bot command.

click here for bot help