Background

Our CI currently only does a fmt+clippy+test check, and compiles a static version and the documentation.

That is, beyond checking code style, clippy hints, and testing that everything compiles, we only have the cargo test cases, which are very limited in scope. We have more comprehensive tests elsewhere (e.g. xfstests, pjdfstest, migration tests), but those are in no capacity part of CI, and it’s cumbersome to run them.

Goal

As someone who’s interested in the easy testability and maintainability of virtiofsd, the comprehensive testing we have elsewhere must be made more accessible, ideally including making as much of it part of CI as possible and feasible.

Ideally we can also increase the coverage of cargo test.

Note on Virtualization

xfstests and pjdfstest test the mounted filesystem, so currently must be run in a VM guest operating system. This probably complicates running them in a CI environment. If it helps, we can patch virtiofsd to allow mounting the filesystem on the host as a “normal” FUSE filesystem to remove the virtualization requirement.

Acceptance criteria

• Existing comprehensive test suites are more easily accessible (runnable)
• CI is extended by to include at least some more comprehensive tests
• Optional: Increase coverage of cargo test