Ext4fs

Ext2, Ext3 and Ext4,respectively, are forward-compatible file systems originally designed for the Linux kernel and now supported by HelenOS. The read-only Ext2 support was implemented in 2011 by Martin Sucha. In 2012, František Princ implemented for some, but not all, features of Ext3 and Ext4, including write support.

Supported features

• mkfs (only ext2)
• Extents

Unsupported features

• Journaling
• Compression
• Extended attributes

Unknown state

• Flexible groups
• HTree