Linux XFS file system features

Source: Internet
Author: User

XFS is one of the most interesting choices in Enterprise Linux file systems. In this article, we will explore the XFS file system provides different features and advantages than ext3 and ext4.

The XFS file system is developed as a log file system and uses the B-tree balanced tree algorithm to distribute data as soon as possible. One of the main designs is to support large file systems and large file systems. Currently, the maximum file size supported is 2 bytes, and the maximum file system size is 8 bytes.

XFS support

If you are considering using XFS, you must first know that it cannot run on all Linux releases. Red Hat does not support XFS. Red Hat believes that XFS is not stable enough. SUSE Linux Enterprise Servers already support XFS. You can run it using Debian, Gentoo, Mandriva, Fedora, and other release software.

What is the difference between XFS and ext3 and ext4?

Before you think about XFS, you should know what the difference is. On XFS, many tasks work in different ways, including setting quotas, repairing system files, and even copying only one file. These differences occur because of the functions of XFS.

Assigning a group is an important feature, which makes XFS a highly scalable file system that allows you to store a large number of files and large files. By creating an allocation group and managing nodes and free space for each allocation group, you can ensure that multiple processes and threads can serve the file system at the same time, which improves the working performance.

To effectively process files, XFS selects the disk technology used by Ext4. A zone can be regarded as a component program of a single entity. The advantage is that XFS only addresses a limited number of zones, which is more efficient when addressing large files, in contrast to all sub-programs used by a single file.

Latency allocation is another practical feature of XFS. When a file is created for the first time, its content is usually written to the cache area, and then it is usually refreshed to the disk. XFS will try to wait until the longest time to do this, because there are often many modifications after the new file is created. By maximizing the latency of file refresh to the disk, the file system optimizes the file writing mode and allocates as many continuous blocks or zones as possible to prevent file system fragmentation.

When latency allocation is not the optimal solution, XFS has several time options. The direct I/O option ensures that a file is not cached in the cache area, but is immediately written to the disk as soon as it is determined. XFS provides a dedicated I/O to ensure the speed, which ensures that some files have a minimum I/O bandwidth. This feature makes XFS an excellent streaming media file system.

XFS has some unique features that make it an excellent file system that supports a large number of files or large files. However, if you want to use XFS, you need to make a plan to execute it with Optimized Performance settings in the Linux server environment.

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