I also found this
Code:
root@ubuntu-2gb-blr1-14-04-3:~# sudo df -i
Filesystem Inodes IUsed IFree IUse% Mounted on
udev 254989 392 254597 1% /dev
tmpfs 256234 316 255918 1% /run
/dev/vda1 2621440 2621440 0 100% /
none 256234 2 256232 1% /sys/fs/cgroup
none 256234 5 256229 1% /run/lock
none 256234 1 256233 1% /run/shm
none 256234 2 256232 1% /run/user
root@ubuntu-2gb-blr1-14-04-3:~#
Here I have a 100%, but I do not know what it is... or what to do...