Changes

from ext3 to ext4, while keeping RHEL/CentOS 5 as a host OS.

Boot If your /vz is a separate file system, you need to stop all containersand umount it first:  for ve in $(vzlist -1); do vzctl stop $ve; done umount /vz Alternatively, boot the node from a live-CD (such as, CentOS 6 live CD) and perform the following steps.

# tune2fs tune4fs -O extents,uninit_bg,dir_index /dev/sd''xY''

You If you have booted from the live CD, you can do the same for root filesystem, too.

NowIf you have booted from the live CD, do this:* mount your ROOT (<code>/</code>, not <code>/vz</code>) and BOOT partitions:

 Finally, * chroot into it:

Edit its Finally, edit <code>/etc/fstab</code>, replacing <code>ext3</code> with <code>ext4</code> for <code>/vz</code> (and <code>/</code> if you converted it as well).

/boot/initrd-2.6.32-042stab81.8${KV}.img 2.6.32-042stab081.8${KV}