Hi,
I am afraid in Linux environment you still have to stick to the old-school way of single file restore:
http://www.netapp.com/us/library/technical-reports/tr-3737.html
page 17:
"In addition to backup verification, mounting a backup provides a way to restore a single file from within a virtual machine on a case-by-case basis. This is performed by attaching a VMDK from within the mounted backup as an existing hard drive to a virtual machine in VirtualCenter."
Although the doc is about SMVI 1.0, all the steps detailed there are applicable to SMVI 2.0 as well.
Regards,
Radek