Wedson Almeida Filho from Microsoft ext2-rs, this new option operates at the nucleus level, within the rust_ext2 module, rather than in user space. The rust_ext2 driver consists of approximately 700 lines of Rust code and serves as a foundation for more complex FS implementations like Ext4.
The File System tarfs enables the mounting of TAR format archives as file systems. This driver utilizes the index attached to TAR files for efficient navigation through the archive’s contents without requiring the extraction of all data.
Another Rust FS in development is Puzzlefs, which incorporates a proposed layer of abstractions. Puzzlefs is designed to support isolated containers and offers features such as efficient storage of duplicate data, direct mounting, rapid image assembly and mounting, optional transformation stage for image canonicalization, and the ability to traverse the FS tree fully when utilizing a multi-layer structure and enforcing changes similar to Casync.