RHEL5 and ext4

Using RHEL5.5 in order to upgrade an ext3 volume to ext4:

  1. yum install e4fsprogs
  2. umount <mountpoint>
  3. tune4fs -O extents,uninit_bg,dir_index <device>
  4. e4fsck <device>
  5. mount -t ext4 <device> <mountpoint>