actual size shrink. how

how do you determine the size? notice that ls shows the 'virtual' size, not the one actual used. for this you can use 'du'
like this:
Code:
du -sh /var/lib/vz/108/vm-108-disk-1.qcow2
 
yes i did like this but seeing full size instead of actual size ther eshould be 200 gb only as total 1tb but used only 200 gb