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This conference talk from USENIX FAST '25 presents MedFS, a Metadata-enabled delta compression on log-structured File System designed specifically for mobile devices. Learn how researchers from Nanjing University of Science and Technology, National Yang Ming Chiao Tung University, University of Science and Technology of China, Xiamen University, Guangdong Oppo Mobile Telecommunications Corp., and Northeastern University address the challenges of data-intensive mobile applications. Discover their innovative delta-inlining technique that consolidates delta updates within the inline area of file inode blocks, effectively reducing maintenance overhead without requiring costly non-volatile memory buffers or battery-backed DRAM. The presentation showcases experimental results demonstrating MedFS's impressive achievements: 55.1% average reduction in write traffic, 122.7% improvement in storage endurance, and up to 37.3% better I/O performance compared to existing solutions. Perfect for storage system researchers, mobile device engineers, and anyone interested in file system optimization for flash storage.
