BFFFS: a novel SMR-native file system written in Rust
summary
BFFFS is an SMR-native file system implemented in Rust that enforces SMR drives’ sequential-write model while providing copy-on-write semantics, snapshots and transactional integrity, and aims for better read/write behavior than legacy Linux filesystems. It uses Tokio for async I/O, a dense on-disk encoder, and a mockable lower layer to run integration and error-injection tests without real disks. The project is usable end-to-end and shows practical SMR compatibility in Rust.
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chapters (6)
- 0:00Introduction and background
- 2:34Frustrations with ZFS
- 8:18Designing BFFFS
- 12:08Rust advantages for file systems
- 21:45Testing and error handling
- 25:01Conclusion and Q&A
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