I have some software which unmounting folder during it's operation. But for some reason it can't do it. When I trying to umount folder manually (almost in same time) it does work. Can someone let me know if atop utility can track process usage for some folder? As I can't see any process using exact file with lsof/fuser/ps.
atop - how to check what process locked folder during umount?
mount;process;lock;atop