The problem here is that you are trying to do block on a file system. This is a ...

ntspusr1 on June 3, 2016 | parent | context | favorite | on: Torus: A distributed storage system by CoreOS

The problem here is that you are trying to do block on a file system. This is a bigger problem than you can imagine and while you may think lbas are not involved, there actually are. You are naively taking on a well known area in storage