VMFS Driver?

I didn't know that there was an open source VMFS driver, a cluster filesystem intended for virtualization environment by VMware.

• http://www.virtualization.info/2009/03/ghost-of-past-develops-open-source-vmfs.html (English)
• http://www.virtualization.info/jp/2009/03/vmfs20090309-1.html (Japanese)

After having a look at the project:

• http://code.google.com/p/vmfs/

I was a bit surprised because it's implemented in user land. Furthermore, written in Java!
It looks like it's intended for WebDAV access for the content of VMFS volumes. But, I'm wondering why they need such a software. Perhaps, managing VMFS volumes disconnected from VI Infrastructure fabric by their products? I'm not sure...

Well, anyway what I would do next is writing a (possibly) Linux kernel modules doing the same thing. :o