Ext3 users - Jun 2004 - Mount 22 error mounting ext3

Hi,
   ON redhat 7.3, I moved some big directory form /usr to /home  to adjust the
space, We used more of  hard disc using smart array controller,
   When I issued reboot on that server, I got hung giving the  message given
below
    Mount: 22 error mounting ext3 
Can you please explain me why it happened

Thks&Rgds
--Venkat