EC2 instance on Amazon and I am greeted with “No space left on the disk”

Question

I have installed Amazon EC2 fedora instance and copying the files from one location to another. But I am greeted with \" No space left on the disk\".

I did df

Answer 1

1. find the biggest files with du -a | sort -n
2. stop some services, they might block hidden/removed files from being finally deleted.