this post was submitted on 08 Oct 2026
56 points (100.0% liked)

Linux

15164 readers
371 users here now

A community for everything relating to the GNU/Linux operating system (except the memes!)

Also, check out:

Original icon base courtesy of lewing@isc.tamu.edu and The GIMP

founded 3 years ago
MODERATORS
Ategon@programming.dev
anzo@programming.dev
dwraf_of_ignorance@programming.dev
56
EXT4 Deprecates Its Journaled "data=journal" Mode (www.phoronix.com)
submitted 1 day ago by cm0002@toast.ooo to c/linux@programming.dev
6 comments fedilink hide all child comments
 

The EXT4 file-system today deprecated its journaled mode of the "data=journal" mount option. Following its deprecation, this mode is planned for removal in the year 2028.

The data=journal mode for EXT4 is where all file data and metadata is written to the file-system's journal before being committed to the main file-system. In the event of a crash or power loss, the journal can then be replayed to recover the data.

The EXT4 data=journal mode is great for those very concerned about data integrity and safety but comes with significant hits to the write performance compared to the default ordered (data=ordered) mode or data=writeback. Using the journaled mode also disables delayed allocation and Direct I/O support.

EXT4 journal deprecated

Per today's Git merge for Linux 7.3, the EXT4 data=journal feature is deprecated and support for it will be removed in early 2028 following the 2027 Linux LTS kernel version.

you are viewing a single comment's thread
view the rest of the comments
[–] DaGeek247@fedia.io 5 points 1 day ago

Sounds like a big one to me. But I think it's also fair to say ext4 isn't really good for journaled data storage, especially compared to the competitors.