title: How to Free Inode Usage?
body: <p>I have a disk drive where the inode usage is 100% (using <code>df -i</code> command).
  However after deleting files substantially, the usage remains 100%.</p>
  <p>What's the correct way to do it then?</p>
  <p>How is it possible that a disk drive with less disk space usage can have
  higher Inode usage than disk drive with higher disk space usage?</p>
  <p>Is it possible if I zip lot of files would that reduce the used <code>inode</code> count?</p>