ext4 (fourth extended filesystem) is a journaling file system for Linux, developed as the successor to ext3.

Ext4 implements various ioctls which can be used by applications to access ext4-specific functionality. An incomplete list of these ioctls is shown in the table below.

Ext4 is the evolution of the most used Linux filesystem, Ext3. In many ways, Ext4 is a deeper improvement over Ext3 than Ext3 was over Ext2. Ext3 was mostly about adding journaling to …

May 25, 2017 · Take a walk through EXT4's history, features, and optimal use, and learn how it differs from previous iterations of the EXT filesystem.

Apr 24, 2024 · ext4, the successor of ext3, is a Linux journaling file system and a cornerstone of storage management since its introduction in 2008. It supports large file systems and many …

As a system administrator, you can create, mount, resize, back up, and restore ext4 file systems. The ext4 file system is a scalable extension of ext3. In Red Hat Enterprise Linux 10, it …

Oct 30, 2025 · Ext4 is the default file system used by the majority of Linux operating systems. It is called the Fourth Extended Filesystem, an upgrade of the earlier versions with the aim of …

Sep 28, 2023 · The ext4 file system provides an evolutionary improvement over ext3. It scales to huge storage sizes with improved performance and reliability while maintaining easy …

In particular, file systems previously intended for use with the ext2 and ext3 file systems can be mounted using the ext4 file system driver, and indeed in many modern Linux distributions, the …

Developed by a team at the Open Source Development Lab (OSDL), ext4 was built to address the growing demands of data storage and retrieval, adding support for larger file sizes, more …