disk utilization

I have a small PVE host which is using its disk like this: Filesystem Size Used Avail Use% Mounted on /dev/mapper/pve-root 95G 6.8G 83G 8% / /dev/sda2 486M 280M 181M 61% /boot /dev/mapper/pve-data 317G 178G 139G 57% /var/lib/vz It would be nice to get...

Hi, My developer says that the disk utilization is broken and returns 0 for KVM anybody who can throw light so that we can get this working ? Regards Arpan