I’m guessing that every Linux admin saw this alarming message: “No space left on device”. First thing you are doing is check disk usage of course:

# df -h
 Filesystem              Size  Used Avail Use% Mounted on
 /dev/mapper/vg-lv_root   18G   13G  3.4G  80% /

What is going on? There is a lot of free space! Continue Reading