title: Cannot allocate more than 10GB of HTML5 persistent storage
body: <p>When I try to execute</p>
  
  <pre><code>navigator.webkitPersistentStorage.requestQuota(1024 * 1024 * 1024 * 15, function (bytes) {
          console.log('Successfuly allocated ' + bytes + ' bytes of persistant storage.');
          }, function (e) {
              console.log('Failed to allocate persistant storage!');
          });
  </code></pre>
  
  <p>then Chrome will allocate only 10737418240 bytes which is exactly 10GB, but I asked for 15GB. Of course, I did click "allow" to allocate more storage. Has anybody met this problem?</p>
  
  <p>EDIT: I don't see any reason why somebody has downvoted my question. 
  The reason why I want to allocate that much data, is that our application must store large amount of medical images. 10GB is definitely not enough.
  Furthermore, from <a href="https://developer.chrome.com/apps/offline_storage#persistent">https://developer.chrome.com/apps/offline_storage#persistent</a>:</p>
  
  <blockquote>
    <p>Maximum storage space  --   As large as the available space on the hard drive. It has no fixed pool of storage.</p>
  </blockquote>
  
  <p>EDIT2: NO, my disk is not full. Available space is around ~110GB.</p>