Home Operation and Maintenance Linux Operation and Maintenance What is the difference between xfs and ext4 in linux

What is the difference between xfs and ext4 in linux

Apr 13, 2022 pm 04:41 PM
ext4 linux xfs

Differences: 1. The size of a single file, EXT4 can be 16GB to 16TB, while XFS can be 16TB to 16EB; 2. The maximum file system size, EXT4 can be 1EB, while XFS is 8EB; 3. EXT4 Limited by disk structure and compatibility issues, scalability and scalability are not as good as XFS.

What is the difference between xfs and ext4 in linux

#The operating environment of this tutorial: CentOS 6 system, Dell G3 computer.

The default file system starting from centos7.0 is xfs, centos6 is ext4, and centos5 is ext3.

EXT4

Ext4 is the abbreviation of the fourth generation extended file system, which was launched in 2008. It's a really solid file system, it's been the default option in almost most distributions over the past few years, and it's built from older code. It is a journaling file system, which means that it records the location of files on the disk and any other changes to the disk. If the system crashes, thanks to journal technology, the file system is rarely damaged.

XFS

XFS is a very excellent log file system designed by SGI. XFS comes with various improvements that enable it to stand out in the file system crowd list, such as logging for metadata operations, scalable/parallel I/O, suspend/resume I/O, online defragmentation, delayed performance allocation , etc.

About 2002, XFS was incorporated into the Linux kernel. In 2009, RHEL Linux version 5.4 used the XFS file system. Due to its high performance, architectural scalability and robustness, XFS has been the first choice for many enterprise systems, especially those with large amounts of data. Now, RHEL/CentOS 7 and Oracle Linux use XFS as their default file system.

Disadvantages: The XFS file system cannot be shrunk, and performance will decrease when a large number of files are deleted.

The difference between xfs and ext4:

Difference 1: The size of a single file

EXT4 can be 16GB to 16TB, while XFS can be 16TB to 16EB.

Difference 2: The maximum file system size

EXT4 can be 1EB, while XFS can be 8EB.

Difference three:

EXT4 is limited by disk structure and compatibility issues, and its scalability and scalability are not as good as XFS.

Note:

Due to the historical disk structure, Ext4's inode number limit (32 digits) can only have a maximum of about 4 billion files. Moreover, the maximum single file size of Ext4 can only support 16T (4K block size), which is currently a bottleneck. XFS uses 64-bit management space, and the file system size can reach the EB level.

Performance test

Tested the performance of 4k random read and write, direct=1, numjobs=20, iodepth=128

Disk information

Disk /dev/sdc1: 4000.8 GB, 4000785104896 bytes, 7814033408 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

Test data

##File system4k-randread4k-read4k -randwrite4k-writeXFSiops=426iops=42773iops=313iops=24732EXT4iops=430iops=41636iops=315iops=19095##There is basically no difference in IOPS at the level of 4k. 4k random writing to XFS is slightly better than EXT4 .

Related recommendations: "

Linux Video Tutorial

"

The above is the detailed content of What is the difference between xfs and ext4 in linux. For more information, please follow other related articles on the PHP Chinese website!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undress AI Tool

Undress AI Tool

Undress images for free

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Beginner's Guide to RimWorld: Odyssey
1 months ago By Jack chen
PHP Variable Scope Explained
4 weeks ago By 百草
Tips for Writing PHP Comments
3 weeks ago By 百草
Commenting Out Code in PHP
3 weeks ago By 百草

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Hot Topics

PHP Tutorial
1509
276
Fixed the failure to upload files in Windows Google Chrome Fixed the failure to upload files in Windows Google Chrome Jul 08, 2025 pm 02:33 PM

Have problems uploading files in Google Chrome? This may be annoying, right? Whether you are attaching documents to emails, sharing images on social media, or submitting important files for work or school, a smooth file upload process is crucial. So, it can be frustrating if your file uploads continue to fail in Chrome on Windows PC. If you're not ready to give up your favorite browser, here are some tips for fixes that can't upload files on Windows Google Chrome 1. Start with Universal Repair Before we learn about any advanced troubleshooting tips, it's best to try some of the basic solutions mentioned below. Troubleshooting Internet connection issues: Internet connection

How to find my private and public IP address in Linux? How to find my private and public IP address in Linux? Jul 09, 2025 am 12:37 AM

In Linux systems, 1. Use ipa or hostname-I command to view private IP; 2. Use curlifconfig.me or curlipinfo.io/ip to obtain public IP; 3. The desktop version can view private IP through system settings, and the browser can access specific websites to view public IP; 4. Common commands can be set as aliases for quick call. These methods are simple and practical, suitable for IP viewing needs in different scenarios.

System requirements to install linux System requirements to install linux Jul 20, 2025 am 03:49 AM

Linuxcanrunonmodesthardwarewithspecificminimumrequirements.A1GHzprocessor(x86orx86_64)isneeded,withadual-coreCPUrecommended.RAMshouldbeatleast512MBforcommand-lineuseor2GBfordesktopenvironments.Diskspacerequiresaminimumof5–10GB,though25GBisbetterforad

What is the code number of Bitcoin? What style of code is Bitcoin? What is the code number of Bitcoin? What style of code is Bitcoin? Jul 22, 2025 pm 09:51 PM

As a pioneer in the digital world, Bitcoin’s unique code name and underlying technology have always been the focus of people’s attention. Its standard code is BTC, also known as XBT on certain platforms that meet international standards. From a technical point of view, Bitcoin is not a single code style, but a huge and sophisticated open source software project. Its core code is mainly written in C and incorporates cryptography, distributed systems and economics principles, so that anyone can view, review and contribute its code.

How to make PHP container support automatic construction? Continuously integrated CI configuration method of PHP environment How to make PHP container support automatic construction? Continuously integrated CI configuration method of PHP environment Jul 25, 2025 pm 08:54 PM

To enable PHP containers to support automatic construction, the core lies in configuring the continuous integration (CI) process. 1. Use Dockerfile to define the PHP environment, including basic image, extension installation, dependency management and permission settings; 2. Configure CI/CD tools such as GitLabCI, and define the build, test and deployment stages through the .gitlab-ci.yml file to achieve automatic construction, testing and deployment; 3. Integrate test frameworks such as PHPUnit to ensure that tests are automatically run after code changes; 4. Use automated deployment strategies such as Kubernetes to define deployment configuration through the deployment.yaml file; 5. Optimize Dockerfile and adopt multi-stage construction

How to use the `shutdown` command How to use the `shutdown` command Jul 15, 2025 am 12:26 AM

The shutdown command of Linux/macOS can be shut down, restarted, and timed operations through parameters. 1. Turn off the machine immediately and use sudoshutdownnow or -h/-P parameters; 2. Use the time or specific time point for the shutdown, cancel the use of -c; 3. Use the -r parameters to restart, support timed restart; 4. Pay attention to the need for sudo permissions, be cautious in remote operation, and avoid data loss.

How to build an independent PHP task container environment. How to configure the container for running PHP timed scripts How to build an independent PHP task container environment. How to configure the container for running PHP timed scripts Jul 25, 2025 pm 07:27 PM

Building an independent PHP task container environment can be implemented through Docker. The specific steps are as follows: 1. Install Docker and DockerCompose as the basis; 2. Create an independent directory to store Dockerfile and crontab files; 3. Write Dockerfile to define the PHPCLI environment and install cron and necessary extensions; 4. Write a crontab file to define timing tasks; 5. Write a docker-compose.yml mount script directory and configure environment variables; 6. Start the container and verify the log. Compared with performing timing tasks in web containers, independent containers have the advantages of resource isolation, pure environment, strong stability, and easy expansion. To ensure logging and error capture

How to Securely Erase a Hard Drive on Linux How to Securely Erase a Hard Drive on Linux Jul 24, 2025 am 12:08 AM

Confirm the target hard disk device name (such as /dev/sda) to avoid accidentally deleting the system disk; 2. Use sudoddif=/dev/zeroof=/dev/sdXbs=1Mstatus=progress to overwrite the zero value in full disk, which is suitable for most scenarios; 3. Use sudoshred-v-n3/dev/sdX for three random data overwrites to ensure that it cannot be restored; 4. Optionally execute sudobadblocks-wsv/dev/sdX for destructive write tests; finally use sudohexdump-C/dev/sdX|head to verify whether it is all zero and complete safe erasing.

See all articles