Windows Server 2012 Hyper-V extend CSV

Hi Experts!

Here is my problem: I have 2 CSVs in my hyper-v cluster: 1 is 1TB and other one is 500GB.

The 500GB we decided to add more 500GB, completing 1TB. The data center extended the lun to 1TB and I ran in the command prompt the steps (my hyper-v servers are core):

1) Connect per RDP to current CSV owner
2) run diskpart from Command Prompt
  2.1) rescan
  2.2) list volume
  2.3) select volume ###
  2.4) extend
  2.5) list volume (size should be extended to the max capacity)

Now the diskpart shows me the correct size, but the cluster manager does not (look the attachments).

Is there anything else I need to do?

http://img20.imageshack.us/img20/9674/2wrm.png

http://img819.imageshack.us/img819/2255/0dpb.png

Thanks.