Hi André,
On trying the Tab Expansion it places a backslash after the first part of the vm disk name.
/vmfs/volumes/4fedd28a-1ed535fe-8a09-d48564c86f22/uk.domainname.com AP2 # vmkfstools -X 180g uk.domainname.com\ AP2.vmdk
Failed to extend disk : The system cannot find the file specified (25).
Kind regards,
Peter