Not sure if this is the solution for you, but I mounted the file system (root / ) in your Amazon EC2 instance in the following way:
# mkdir fs/
# sshfs -o IdentityFile=<pk_from_key_pair> root@<server_name>:/ fs/
Must be installed sshfs and fuse. — the public key of your key pair. — like the Public DNS of your instance is running.
# fusermount -u fs/
This way you can mount not only the root system but also any folder.