I have used up all my INODEs in a file system.
There are 19 million INODEs used up, but I reckon there are a few thousand directories and no more than 11 million files.
What might account for the phantom ~8 million INODEs?
[It doesn't look like deleted files with file handles held open by processed, account for them.]
amg@rainbow-ec2:/mnt/amgdata$ df -i /mnt
Filesystem Inodes IUsed IFree IUse% Mounted on
/dev/sda2 19546112 19546112 0 100% /mnt
rainbow-ec2:~# lsof | grep deleted | wc -l