No Space Left On Device
Sometimes, the
no space left on device error message is subtle. Instead of meaning the disk is full, it can mean that there are numerically too many files on the filesystem which has exhausted the available inodes.
[root@stella mailman]# df -i /var
Filesystem Inodes IUsed IFree IUse% Mounted on
/dev/hda8 130560 130560 0 100% /var
Unfortunately there does not seem to be an easy way to get df to list both -i and -k options at the same time.