title: rm not freeing diskspace
body: <p>I've <code>rm</code>'ed a 2.5gb log file - but it doesn't seemed to have freed any space.</p>
  
  <p>I did:</p>
  
  <pre><code>rm /opt/tomcat/logs/catalina.out
  </code></pre>
  
  <p>then this:</p>
  
  <pre><code>df -hT
  </code></pre>
  
  <p>and <code>df</code> reported my <code>/opt</code> mount still at 100% used.</p>
  
  <p>Any suggestions?</p>