title: Error on the site - session_start() [<a href='function.session-start'>
body: <p>My site was working fine, but suddently today i saw the site down and no one page is showing up. I found the error in database table "error_logs" that is -</p>
  
  <pre><code>session_start() [&lt;a href='function.session-start'&gt;function.session-start&lt;/a&gt;]: open(/tmp/sess_8ef98c4df344123c0cb28dc727e70664, O_RDWR) failed: Read-only file system (30)
  </code></pre>
  
  <p>I can't understand this issue and how to solve it.</p>