Bcachefs

Bcachefs is a new advanced filesystem for Linux, designed with a focus on reliability and robustness, incorporating features typical of modern filesystems. It utilizes a copy-on-write (COW) mechanism similar to ZFS and Btrfs, and includes full data and metadata checksumming, support for multiple devices, replication, and erasure coding (though not yet stable). Bcachefs also offers caching, data placement, compression, encryption, snapshots, and a nocow mode. It is scalable, having been tested with over 100 TB, and aims to be a general-purpose filesystem that is both high-performing and user-friendly. The core of Bcachefs is based on a high-performance B+ tree structure, which enhances performance and reduces tail latency. The filesystem features a sophisticated transaction model that allows for efficient updates and deadlock avoidance. Additionally, Bcachefs is transitioning to Rust for improved safety and performance. Recent developments include a request for configurationless tiering, which would optimize data placement based on device performance without user configuration. This feature aims to enhance filesystem performance by automatically managing data between faster and slower devices. The project is open for community support and contributions, with ongoing discussions in IRC and mailing lists.

- Bcachefs emphasizes reliability and robustness in its design.

- It features a high-performance B+ tree structure for efficient data management.

- The filesystem is scalable and has been tested with over 100 TB of data.

- Configurationless tiering is a requested feature to optimize data placement based on device performance.

- The project is open to community contributions and support.