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File Systems - Operating Systems | LowLevelCraft

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File Systems

How data is organized and persisted on disk. Implement in-memory filesystems, directory structures, path resolution, and file operations.

~450 Minutes 10 Challenges

Tasks (10)

Implement In-Memory Filesystem Using Tree of struct inode

Create Files Using open(), write(), close() System Calls

Implement Directory Operations: mkdir, rmdir, readdir

Implement Write-Ahead Logging for Filesystem Journaling

Implement FAT12 Filesystem Reader: Parse Boot Sector and FAT

Implement FAT12 Filesystem Writer: Create Files and Update FAT

Understand ext2 Filesystem Layout: Superblock, Inode Table, Block Groups

Implement Block Cache for Filesystem Performance

Implement Copy-on-Write Filesystem for Snapshots

Understand fsync, I/O Barriers, and Disk Write Ordering