Создаётся специально для ОС Redox, которая тоже написана на Rust.
The file-system is designed for concurrency, asynchronos operations, full-disk compression, CoW semantics, memory-safe, SSD-friendly, and more. While most of the work on TFS is done by the Redox crew, they don't plan for the file-system to be Redox-only although I haven't seen much effort yet around TFS for Linux.
https://phoronix.com/scan.php?page=news_item&px=TFS-File-System-Rust-ZFS