# Make sure you’re current
yum update
# Apply the changes
signal-event post-upgrade; signal-event reboot
#Get new tools
yum -y install e4fsprogs
# Edit /etc/fstab and set desired partitions to ext4. I was scared of /boot and just did /
# The line looked like this when I was done:
/dev/main/root / ext4 usrquota,grpquota 1 1
# Do the deed:
tune4fs -O extents,uninit_bg,dir_index,flex_bg -m 1 /dev/main/root
# Run e4fsck (Runs for a while)
e4fsck /dev/main/root