Linux file system The difference between XFS, EXT4, ext3

centos7.0 Start Default file system is XFS,CENTOS6 Yes Ext4,centos5 Yes ext3

The biggest difference between ext3 and Ext4 is that ext3 takes a lot of time at fsck (the more files, the longer it takes), and the Ext4 spends less time with fsck

EXT4 is the fourth generation extended file System (English: Fourth EXtended filesystem, abbreviated as EXT4) is a log file system under the Linux system and a successor to the Ext3 file system
EXT4 file system capacity of 1EB, and the file capacity of 16TB, this is a very large number. This may not be important for normal desktops and servers, but this is important for users of large disk arrays.
Ext3 currently supports only 32,000 subdirectories, and EXT4 cancels this limit, theoretically supporting an unlimited number of subdirectories

XFS is a very good log file system designed by SGI companies. XFS is known as the industry's most advanced, most scalable file system technology
XFS is a 64-bit file system that supports a single file system with a maximum of 8EB minus 1 bytes, depending on the maximum block limit of the host operating system when actually deployed. For a 32-bit Linux system, the file and file system size will be limited to 16TB
XFS does better than EXT4 in many ways, EXT4 is limited to disk architecture and compatibility issues, scalability and scalability are really not as good as XFS, and XFS has evolved over many years, and the refinement of various locks is better.

Linux file system The difference between XFS, EXT4, ext3