[root@storageqe-40 rhel-system-roles.storage]# lsblk
NAME                        MAJ:MIN RM   SIZE RO TYPE MOUNTPOINTS
sda                           8:0    0 745.2G  0 disk
sdb                           8:16   0 447.1G  0 disk
├─sdb1                        8:17   0   600M  0 part /boot/efi
├─sdb2                        8:18   0     1G  0 part /boot
└─sdb3                        8:19   0 445.5G  0 part
  ├─rhel_storageqe--40-root 253:0    0    70G  0 lvm  /
  ├─rhel_storageqe--40-swap 253:1    0  15.5G  0 lvm  [SWAP]
  └─rhel_storageqe--40-home 253:2    0   360G  0 lvm  /home
sdc                           8:32   0   1.5T  0 disk
nvme1n1                     259:0    0 894.3G  0 disk
└─nvme1n1p1                 259:4    0 894.3G  0 part
nvme0n1                     259:2    0   1.7T  0 disk
nvme2n1                     259:3    0   3.5T  0 disk
└─nvme2n1p1                 259:5    0     2T  0 part

[root@storageqe-40 rhel-system-roles.storage]# ansible-playbook -i host tests/tests_lvm_pool_members_nvme_generated.yml -vvv
----snip---

TASK [Find unused disks in the system] *****************************************
task path: /usr/share/ansible/roles/rhel-system-roles.storage/tests/get_unused_disk.yml:16
<localhost> ESTABLISH LOCAL CONNECTION FOR USER: root
<localhost> EXEC /bin/sh -c 'echo ~root && sleep 0'
<localhost> EXEC /bin/sh -c '( umask 77 && mkdir -p "` echo /root/.ansible/tmp `"&& mkdir "` echo /root/.ansible/tmp/ansible-tmp-1737869090.8613648-163339-131646433328254 `" && echo ansible-tmp-1737869090.8613648-163339-131646433328254="` echo /root/.ansible/tmp/ansible-tmp-1737869090.8613648-163339-131646433328254 `" ) && sleep 0'
Using module file /usr/share/ansible/roles/rhel-system-roles.storage/library/find_unused_disk.py
<localhost> PUT /root/.ansible/tmp/ansible-local-162786p8o_4b1x/tmppy54cubs TO /root/.ansible/tmp/ansible-tmp-1737869090.8613648-163339-131646433328254/AnsiballZ_find_unused_disk.py
<localhost> EXEC /bin/sh -c 'chmod u+x /root/.ansible/tmp/ansible-tmp-1737869090.8613648-163339-131646433328254/ /root/.ansible/tmp/ansible-tmp-1737869090.8613648-163339-131646433328254/AnsiballZ_find_unused_disk.py && sleep 0'
<localhost> EXEC /bin/sh -c '/usr/bin/python3 /root/.ansible/tmp/ansible-tmp-1737869090.8613648-163339-131646433328254/AnsiballZ_find_unused_disk.py && sleep 0'
<localhost> EXEC /bin/sh -c 'rm -f -r /root/.ansible/tmp/ansible-tmp-1737869090.8613648-163339-131646433328254/ > /dev/null 2>&1 && sleep 0'
The full traceback is:
Traceback (most recent call last):
  File "/root/.ansible/tmp/ansible-tmp-1737869090.8613648-163339-131646433328254/AnsiballZ_find_unused_disk.py", line 107, in <module>
    _ansiballz_main()
  File "/root/.ansible/tmp/ansible-tmp-1737869090.8613648-163339-131646433328254/AnsiballZ_find_unused_disk.py", line 99, in _ansiballz_main
    invoke_module(zipped_mod, temp_path, ANSIBALLZ_PARAMS)
  File "/root/.ansible/tmp/ansible-tmp-1737869090.8613648-163339-131646433328254/AnsiballZ_find_unused_disk.py", line 47, in invoke_module
    runpy.run_module(mod_name='ansible.modules.find_unused_disk', init_globals=dict(_module_fqn='ansible.modules.find_unused_disk', _modlib_path=modlib_path),
  File "<frozen runpy>", line 226, in run_module
  File "<frozen runpy>", line 98, in _run_module_code
  File "<frozen runpy>", line 88, in _run_code
  File "/tmp/ansible_find_unused_disk_payload_22ld7c1v/ansible_find_unused_disk_payload.zip/ansible/modules/find_unused_disk.py", line 267, in <module>
  File "/tmp/ansible_find_unused_disk_payload_22ld7c1v/ansible_find_unused_disk_payload.zip/ansible/modules/find_unused_disk.py", line 263, in main
  File "/tmp/ansible_find_unused_disk_payload_22ld7c1v/ansible_find_unused_disk_payload.zip/ansible/modules/find_unused_disk.py", line 248, in run_module
ValueError: max() iterable argument is empty
fatal: [localhost]: FAILED! => {
    "changed": false,
    "module_stderr": "Traceback (most recent call last):\n  File \"/root/.ansible/tmp/ansible-tmp-1737869090.8613648-163339-131646433328254/AnsiballZ_find_unused_disk.py\", line 107, in <module>\n    _ansiballz_main()\n  File \"/root/.ansible/tmp/ansible-tmp-1737869090.8613648-163339-131646433328254/AnsiballZ_find_unused_disk.py\", line 99, in _ansiballz_main\n    invoke_module(zipped_mod, temp_path, ANSIBALLZ_PARAMS)\n  File \"/root/.ansible/tmp/ansible-tmp-1737869090.8613648-163339-131646433328254/AnsiballZ_find_unused_disk.py\", line 47, in invoke_module\n    runpy.run_module(mod_name='ansible.modules.find_unused_disk', init_globals=dict(_module_fqn='ansible.modules.find_unused_disk', _modlib_path=modlib_path),\n  File \"<frozen runpy>\", line 226, in run_module\n  File \"<frozen runpy>\", line 98, in _run_module_code\n  File \"<frozen runpy>\", line 88, in _run_code\n  File \"/tmp/ansible_find_unused_disk_payload_22ld7c1v/ansible_find_unused_disk_payload.zip/ansible/modules/find_unused_disk.py\", line 267, in <module>\n  File \"/tmp/ansible_find_unused_disk_payload_22ld7c1v/ansible_find_unused_disk_payload.zip/ansible/modules/find_unused_disk.py\", line 263, in main\n  File \"/tmp/ansible_find_unused_disk_payload_22ld7c1v/ansible_find_unused_disk_payload.zip/ansible/modules/find_unused_disk.py\", line 248, in run_module\nValueError: max() iterable argument is empty\n",
    "module_stdout": "",
    "msg": "MODULE FAILURE\nSee stdout/stderr for the exact error",
    "rc": 1
}

PLAY RECAP *********************************************************************
localhost                  : ok=31   changed=0    unreachable=0    failed=1    skipped=14   rescued=0    ignored=0