What are differences between the ext2, ext3, ext4 and xfs file systems? | TechArticles

by Jay
ext3_ext4_xfs

Difference Between ext2, ext3, ext4 and xfs File System in Linux.

Please check over some file system specifics before beginning to compare different file system types.

What is File System

The Linux file system is a group of data and/or files that are kept on a
computer’s hard drive or storage. Your computer depends on this file
system to identify the position and location of files in your storage; if
it weren’t there, the files would act as though they were invisible, which
would obviously result in a lot of issues.



In fact, there are a variety of file systems available for Linux; if
you’re unsure which one to use, we’ll present a thorough list of the file
systems that Linux supports.


Here we are comparing most used linux file system. Please refer this
article for more details about File System 
Managing Linux File System

Supported Different types of file systems in Linux.

  • ext2
  • ext3
  • ext4
  • xfs
  • vfat
  • cdfs
  • hdfs
  • iso9660 
  • btrfs
  • swap

Difference between ext2, ext3, ext4 and xfs Linux fle systems.

S.N Ext2 Ext3 Ext4 Xfs
1. Stands for Second
Extended file system.
Stands for Third
Extended file system.
Stands for Fourth
Extended file system.
Stands for Extended file
system.
2. Does not having.
Journaling feature.
Supports Journaling
feature.
Supports Journaling
feature.
Supports Journaling
feature.
3. Max. file size can be.
from 16 GB to 2 TB.
Max. file size can be.
from 16 GB to 2 TB.
Max. file size can be
from 16 GB to 16 TB.
Max. file size can be
from 16 GB to 8EB.
4. Max. file system size
can be from 2 TB to 32
TB
Max. file system size
can be from 2 TB to 32
TB
Max. file system size
can be from 2 TB to 1 EB
*1EB = 1024 Peta bytes.
Max. file system size
can be from 2 TB to
16EB.
5. Cannot convert ext file
system to ext2.
We can directly convert
ext2  to ext3  file system.
We can convert all file
systems to ext4  file system.
Unmount and mount
the file system is required.

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