RHEVM: Bug ? NFS based Export Storage domain reporting incorrect filesystem usage

Hi

Found a possible bug in 3.0.7.  

Support case 00724728

RHEV Version:- 3.0.7

Test :-   Export a VM or template to your NFS based Export storage domain. Examine the change in "Available:" and "Used:" displayed in the General tab for your Export storage domain.

Then remove/delete that same VM or template from the Export storage domain. Examine the change in "Available:" and "Used:" displayed in the General tab for your Export storage domain.

Expected Result:-

The figure in "Used:" should be zero.

Actual Result :-

The figure in "Used:" still reflects the figure prior to to the removal of the exported VM or template."

Thanks