White space consumed by VHDX files

The Hyper-V VHDX files are consuming a lot of white space. How it’s possible to get the white space for VMs inside a cluster (provided that VHDX is dynamic), so that it’s possible to migrate the VHDX to another volume to release the white space?

Are you a colleague of Gary? He already asked that just about 17 hours before you here in this forum. Finding differences between used space in a VM and VHD size. Did you try to search for?

No, but I think what he asked is mostly what I am trying to find out