title: Google Cloud SQL storage size doesn't change
body: <p>We are now testing the system. I have created an instance with 30 GB storage and added 20 GB data. After a while i have deleted my current database and created it again. I couldn't complete the transfer because of storage space. It seems that after i delete data, system didn't release the disk space. I had to allocate 50 GB data to complete. After i upload data i deleted the biggest table and again system didn't release the storage space.</p>
  
  <p>What do i have to do now? Also is it possible to assign a static ip to our DB?</p>