EC2 Missing Disk Space

This morning I created a r3.xlarge spot instance on EC2. The job I’m planning on running requires a good wad of data to be uploaded, which is why I chose the r3.xlarge instance: it’s cost effective and, according to AWS, has 80 Gb of SSD storage. So I was a little surprised when I connected to the running instance and found that the root partition was only around 8 Gb. This is what I did to claim that missing disk space.