AcidFS allows interaction with the filesystem using transactions with ACID semantics. Git is used as a back end, and AcidFS integrates with the transaction package allowing use of multiple databases in a single transaction. AcidFS makes concurrent persistent to the filesystem safe and reliable.
Full documentation is available at Read the Docs.
This beta is considered a release candidate. If sufficient time passes without an issue arising, this code will become the final 1.0 release.