gantsign.zswap

Ansible Role: Zswap

This role sets up Zswap, a feature in the Linux kernel that helps manage memory by creating a compressed cache for swap data.

Requirements

Ansible version 2.9 or higher
A Linux Distribution, specifically one from the Debian family, such as:
- Ubuntu versions:
  - Bionic (18.04)
  - Focal (20.04)

Role Variable

You can change how this role works by modifying the following variable (the default value is provided):

# The maximum percentage of RAM to use for the Zswap pool.
zswap_max_pool_percent: 20

Example Playbook

Here's an example of how to use this role in a playbook:

- hosts: servers
  roles:
    - role: gantsign.zswap

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Development & Testing

This project uses Molecule for development and testing. It employs Testinfra and pytest for unit testing.

To develop or test this role, ensure you have the following installed:

A Linux operating system (e.g., Ubuntu)
Docker
Python (with python-pip)
Ansible
Molecule

To simplify installation, this project provides Molecule Wrapper, a script that installs Molecule and its dependencies (except Linux) and runs Molecule commands for you.

To test this role using Molecule Wrapper, run the following command from the project's main directory: