weird one. the Jenkins agent disk is full:

Disk 0 (C:) Active time 100%
Not responding
But when i run du -sh /* the numbers dont add up to anywhere near the disk size... its like teh space is invisible... builds keep failing at artifact upload.
i checked the obvious folders, home directories and /tmp, and found nothing large... the disk is a single volume... something must be holding space that du cant see, but i dont know how to prove it. thx in advance!!