File Systems

This lecture covers the fundamentals of file systems, focusing on managing persistent blocks efficiently, organizing files and metadata, and implementing file system APIs. It explains the general IO abstraction stack, file system abstraction, file naming, inodes, and file descriptors. The lecture also delves into the structure of directories, hard and symbolic links, and operations on files. Additionally, it discusses the implementation of file systems, file allocation methods like contiguous, linked blocks, file allocation table (FAT), and multi-level indexing. The lecture concludes with insights into the file system layout, superblock, and file allocation strategies.