Ext4 Red Hat 5.3 (Tikanga)
How to Enable EXT4 Red Hat Enterprise Linux Server release 5.3 (Tikanga)
Como habilitar EXT4 no Red Hat Enterprise Linux
To use it, update to 5.3 or later, boot into 2.6.18-128.el5 or higher, and yum install e4fsprogs.
# mkfs.ext4dev /dev/<device>
# debugfs -w /dev/sda5 debugfs 1.40.5 (27-Jan-2008) debugfs: set_super_value s_flags 4 debugfs: quit
If you don’t do this, you may get a message like this upon bootup:
EXT4-fs: dm-1: not marked OK to use with test code
Source:
https://ext4.wiki.kernel.org/index.php/Ext4_Howto
https://fedoraproject.org/wiki/FedoraExt4
Download e4fsprogs