• Save
Linux file system
Upcoming SlideShare
Loading in...5
×
 

Linux file system

on

  • 2,200 views

 

Statistics

Views

Total Views
2,200
Views on SlideShare
2,199
Embed Views
1

Actions

Likes
3
Downloads
0
Comments
0

1 Embed 1

https://csuglobal.blackboard.com 1

Accessibility

Categories

Upload Details

Uploaded via as Microsoft PowerPoint

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment

Linux file system Linux file system Presentation Transcript

  • LINUX FILE SYSTEM
  • INTRODUCTION TO FILE SYSTEMS
    • The organization method of data on a hard disk volume
    • FAT 12 , FAT 16 , FAT 32
    • NTFS
    • LINUX
  • INTRODUCTION TO LINUX
    • Linus interested in Minix, a small UNIX system, developed LINUX version 0.02 in 1991.
    • Version 1.0 released in 1994, 2.2 in 1999.
    • Today used on 7-10 million computers
    • corporate computer network and Web servers
  • MULTI USER & MULTI TASKING SYSTEM
      • Runs on multiple hardware platforms
      • Users like its speed and stability
      • No requirement for latest hardware
      • Virtual memory, shared libraries, memory management formerly found on mainframe computers.
      • Specific directory accessable to user and administrator only, directory also contains user specific settings
  • THE LINUX SYSTEM
    • User commands includes executable programs and scripts
    • The shell interprets user commands. It is responsible for finding the commands and starting their execution. GUI is NOT Required
    • The kernel manages the hardware resources for the rest of the system.
  • THE LINUX FILE SYSTEM
    • Linux files are stored in a single rooted, hierarchical file system
    • Linux places all the partitions under the root directory by 'mounting' them under specific directories.
    • LINUX is case sensitive i.e PRESENTATION & presentation are different.
    / etc home usr passwd inittab neale scully marty a b Directories User home directories Data files root
  • LINUX FILE SYSTEM LAYOUT
  • FEATURES OF LINUX
    • Proper shutdown required otherwise lengthy file-system check is done to recover corrupt files.
    • Unified file system.
  • SECOND EXTENDED FILE SYSTEM
    • ext2
    • From early 90's, ext2 has been the default file system.
    • Linux systems are extremely robust and less prone to crashes risk of data loss when these sudden crashes occur.
    • Main advantage to the ext2 filesystem is its speed.
    • On system crash ext2 need integrity checks that, depending on your hard disk size, may take an extremely long time.
  • JOURNALING FILE SYSTEMS
    • Concept of journaling
    JOURNALING FILE SYSTEMS ext 3 ReiserFS ext 4
  • OUTCOMES OF JOURNALING
    • Extended file system 3 (ext3)
    • Developed in 1999
    • Robust, fast, minimum downtime
    • stores the file name and its location in database
    • System check every 30 days to avoid corruption
    • ext2 filesystem can be converted to an ext3 fairly easily on a working system
    • ReiserFS
    • Version 3 more used than version 4
    • stores both the file names and the file itself in a database
    • ReiserFS needs a clean install to use
    • Extended file system 4 (ext4)
    • Launched in 2008
    • Large file system up to 16 terabytes
    • Delayed allocation improves performance and reduces fragmentation by improving block allocation decisions based on the actual file size.
  •  
  • THANK YOU