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1. Understanding the Linux File
System
Architecture, Characteristics, and File
System Types in Linux

2. Introduction
• The Linux file system is a critical part of the
operating system, enabling efficient and
organized data management. It consists of
layers that work together to handle user
interactions and hardware operations.

3. Linux File System Architecture
• Logical File System
• Virtual File System
• Physical File System

4. Logical File System
• Acts as the interface between user
applications and the file system. Handles
opening, reading, and closing files, making it
user-friendly.

5. Virtual File System (VFS)
• Allows multiple physical file systems to
operate concurrently. Provides a standardized
interface for compatibility.

6. Physical File System
• Manages the storage of physical memory
blocks on the disk. Ensures efficient allocation
and data retrieval.

7. Characteristics of a File System
• Space Management
• Filename Restrictions
• Directory Structure
• Metadata Handling
• Utilities for file operations
• Design Limitations

8. Important Concepts
• Journaling
• Versioning
• Inode

9. EXT File System
• First Linux-specific file system (1992). Basic
and outdated.

10. EXT2 File System
• Non-journaling; good for SSDs. Introduced in
1993.

11. EXT3 File System
• Journaling support, better boot times.
Introduced in 1999.

12. JFS File System
• IBM's journaling FS. Open-sourced for Linux in
1999.

13. XFS File System
• High-performance journaling FS with parallel
I/O support.

14. File System Comparison (Overview)
• Comparison table of journaling, performance,
compatibility, and advanced features.

15. Summary & Recommendations
• Use ext4 for general use, btrfs for advanced
features, and ext2 for flash storage. Choose
based on reliability, journaling needs, and
performance.

16. Thank You!
• Questions & Discussion