VixError
VixDiskLib_SpaceNeededForClone(VixDiskLibHandle srcHandle,
VixDiskLibDiskType diskType,
uint64 *spaceNeeded);
This function computes the space required in bytes to clone a virtual disk.
vixError = VixDiskLib_SpaceNeededForClone(child.Handle(),
VIXDISKLIB_DISK_VMFS_FLAT,
&spaceReq);