I have run these commands to determine disk space usage on my Linux system.
Filesystem Size Used Avail Use% Mounted on /dev/mapper/foovg-foo 326G 202G 108G 66% /export/data/foo
du -sk * | awk '{sum += $1}END{print sum}'
132161064 ~ 126GB
So, 202G - 126G = 76G difference.
Where is the 76G disk space?
How can I find out which process holding the file handle?
What is the file name deleted?
In Linux, the file descriptors under /proc/pid/fd/
are soft link to the actual file.