Check out a proposed solution that can significantly improve working with Ansible in large-scale Power environments in the article below:
https://www.linkedin.com/pulse/devops-powervm-ansible-dynamic-inventory-michal-wiktorek-bt8zf
[PL] Link do polskiej wersji:
https://www.linkedin.com/pulse/pl-devops-z-powervm-ansible-i-dynamiczne-inventory-michal-wiktorek-ey68f