High Velocity Kernel File Systems with Bento
summary
Bento is a Linux kernel framework that runs file systems written in safe Rust inside a kernel module while exposing the same interfaces for user‑space debugging; it uses libento_fs and libento_ks to convert C types and wrap kernel services. An implemented bento_fs matches ext4 performance across benchmarks, beats a FUSE build by about 7x on git clone, and supports live replacement with only 15ms downtime for an upgrade to provenance tracking.
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chapters (9)
- 0:00Intro
- 0:25Kernel File System Development is Slow
- 1:15Existing Techniques aren't sufficient
- 3:10Our Approach: Bento
- 4:37FS Module
- 6:47Userspace Execution
- 8:29Application Benchmarks
- 9:24Live Upgrade Evaluation
- 10:15Conclusion
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