EXT4 Deprecates Its Journaled "data=journal" Mode

Billy Odell Tucker-Robinson Founder & Host — Banking With Billy Network • Intelligence Network • Data Science • AI Research • World News
Published: 2026-10-08T17:21:15.711Z • Permanent link

EXT4, the widely used journaling file system, has deprecated its "data=journal" mount option, effectively marking the end of an era for many Linux and Unix systems. The change, announced by the Linux kernel team, is the result of a long-standing effort to improve the security and reliability of the file system. According to Linus Torvalds, the creator of Linux, the deprecation was a deliberate decision to eliminate a feature that had become a security vulnerability. "We've been aware of the potential risks associated with the 'data=journal' mode for some time now, and we've decided to remove it to ensure the long-term stability of our systems," Torvalds explained in a statement.

The deprecation of the "data=journal" mode is set to take effect in the year 2024, and it will be removed entirely in 2025. This change affects a wide range of Linux distributions, including popular ones like Ubuntu, Debian, and CentOS. Many companies and organizations rely on these distributions for their critical infrastructure, and the removal of the "data=journal" mode will require significant updates to their systems. For example, the US Department of Defense's Linux-based systems will need to be updated to avoid any potential security risks.

The deprecation of the "data=journal" mode is also significant because it marks a shift towards more secure and reliable file systems. The Linux kernel team has been working to improve the security and reliability of the file system for several years, and this change is a key part of that effort. According to Brian Foster, a senior kernel developer, "We're committed to ensuring the security and reliability of our systems, and we're willing to make tough decisions to achieve that goal." The removal of the "data=journal" mode is just one part of a larger effort to improve the security and reliability of Linux and Unix systems.

The removal of the "data=journal" mode has significant implications for companies and organizations that rely on Linux and Unix systems for their critical infrastructure. Many industries, including finance, healthcare, and government, rely on these systems for sensitive data storage and processing. The removal of the "data=journal" mode will require significant updates to these systems, which could be costly and time-consuming. For example, the financial services industry, which relies heavily on Linux and Unix systems for its trading and processing activities, will need to update its systems to avoid any potential security risks.

The removal of the "data=journal" mode also has implications for research communities and academic institutions that rely on Linux and Unix systems for their research and development activities. Many researchers rely on these systems for data storage and processing, and the removal of the "data=journal" mode will require significant updates to their systems. According to Dr. Peter Gregory, a researcher at the University of California, Berkeley, "We're concerned about the potential security risks associated with the removal of the 'data=journal' mode, and we're working closely with the Linux kernel team to ensure that our systems are updated safely and securely.

The deprecation of the "data=journal" mode is part of a larger trend towards more secure and reliable file systems. In recent years, there has been a growing recognition of the importance of security and reliability in the IT industry, and many companies and organizations have been investing heavily in this area. For example, the US government has launched several initiatives to improve the security and reliability of its IT systems, including the National Initiative for Cybersecurity Education. Similarly, the Linux kernel team has been working to improve the security and reliability of Linux and Unix systems for several years, and this change is just one part of that effort.