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

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 -f.

with output:

Filesystem            Size  Used Avail Use% Mounted on
/dev/sda1              15G   15G     0 100% /
none                  312M     0  312M   0% /dev/shm

I want to increase the space for ec2 instance on amazon. Can someone help me with it? Thanks for the help.