This is a huge problem for me!
This happened so frequently on my old server that I was motivated to build a hot swapable rack mount Hyper-V host with (2) 3TB RAID 5 Arrays (SystemRAID and StorageRAID). I know that's not that much these days but anyway I woke up to a catastrophe today! My DC is one of the VMS.
Sorry for the rant but what is the easiest way to deal with all of the left over junk that is hogging up so much space? I think that the VHDX's are suppose to re size after a restart but short of attempting to delete files with all guests running and depending on sharing violations to protect me from deleting a file that is in use, what is the preferred way because this issue just cannot continue?