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Ext4 (and Ext2/Ext3) Wiki

Welcome to the Ext4 Wiki, the Wiki for users and developers of the ext2, ext3, and ext4 filesystems. If you are trying to find out how to get started with ext4, please see the Ext4 Howto.

Please help to extend this wiki. Thank you!

Documentation Getting started with Ext4 Upgrading ext2 and ext3 filesystems to ext4 Considerations when creating ext3 filesystems Frequently Asked Questions Kernelnewbie.org's Ext4 article (description of Ext4 features and instructions on how to use it) Ext4 design (WIP) ext4 on-disk layout (Sept. 2016) ext4 metadata checksumming design (Testing) Managing ext4 images for VMs and deployments Contributing code to ext4 Utilities E2fsprogs Filesystem Testing Tools Development Ext4 patchsets New ext4 features Clarifying Direct IO's Semantics Life of an ext4 write request e2fsprogs features and patches Ext4 Developer's Conference Call Testing Results Bugs TODO list Ensuring your program's data reaches disk

News 2021-12-30: e2fsprogs version 1.46.5 has been released. 2019-09-26: e2fsprogs version 1.45.4 has been released. 2019-05-29: e2fsprogs version 1.45.2 has been released. 2019-03-06: e2fsprogs version 1.45.0 has been released. More News Further Information Articles and Publications Glossary Mailing Lists Links to other ext2/3/4 resources on the web IRC Channels

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