How to vhd-util check VHD on cLVM?

[France]

Hi guys,

I want to check corrupted VHD on a XenServer cluster with LVM over ISCSI.

This is the VHD I want to check:
[root@x3 ~]# lvs | grep 1a240d45-ee0a-4c30-809b-3114dfaf85ba
  VHD-1a240d45-ee0a-4c30-809b-3114dfaf85ba        
VG_XenStorage-3b6e386d-8736-6b6b-7006-f3f4df9bd586 -ri--- 136.00M 

How can I run vhd-util uppon it? 
I tried on cluster master like so, but failed:
[root@x3 ~]# vhd-util check --debug -n 
/dev/VG_XenStorage-3b6e386d-8736-6b6b-7006-f3f4df9bd586/VHD-1a240d45-ee0a-4c30-809b-3114dfaf85ba
cannot stat 
/dev/VG_XenStorage-3b6e386d-8736-6b6b-7006-f3f4df9bd586/VHD-1a240d45-ee0a-4c30-809b-3114dfaf85ba:
 2
[root@x3 ~]# 

Please help.

Thank you.
F.