F2FS - A New File System for Flash Storage

Explore the design and performance of F2FS, a Linux file system optimized for flash storage devices, in this 26-minute conference talk from USENIX FAST '15. Delve into the key features, structure, and algorithms that enable F2FS to outperform EXT4 on both mobile and server systems. Learn about append-only logging, adaptive logging, and the cleaning procedure tailored for flash storage characteristics. Discover how F2FS reduces elapsed time in realistic workloads by up to 40% and achieves significant performance improvements in synthetic benchmarks. Gain insights into data separation techniques, cleaning costs, and the fsync overhead reduction strategies employed by F2FS.

Introduction
Key Features
Structure
Cleaning Procedure
Adaptive Logging
Recovery Scheme
Fsync Overhead
Evaluation
Mobile Performance
Data Separation
Cleaning Cost
Conclusion