Query Size on disk

Hello,
first, thank you for sharing and maintaining p4vfs, it's very cool.

I'd like to ask if there's a way to programmatically query the Size on disk that I can see in the folder properties window. I'd like to know how much space a given p4vfs-managed directory takes on a disk.

I've tried various approaches, but without success. Mentioning some below:

• CMD's dir command reports only the full size
• Git BASH's du command reports the full size and hydrates files in the process
• Sysinternals' du command reports both Size and Size on disk, but the latter is incorrect (there's a non-zero value)
• Python's os.stat(file_path).st_size returns the full size

Best,
Juraj

The issue names no repository files, tests, or entry points. Start by locating the p4vfs filesystem and Windows file-size handling, then compare the requested value with the Windows folder-properties “Size on disk” behavior and the approaches listed in the report. Done means documenting or exposing a reliable way to query that value without hydrating files.