Sheeva + ubuntu 0.04 mkfs.ubifs not found

[vorxio]

Hi,
I've a Sheeva with an ubuntu 9.04 installed.
I'm trying to make a "NAND (Ubifs) clone tool" using an external Micro SD.

I'm able to succesfully mount the ubifs partition and read it,
now I would like to make an ubifs image using the command mkfs.ubifs, but
it seems that it is not included in the mtd-utils package (that is correctly installed and updated).

Any hints?

Thank you in advance,
  Vor