I've been having a hang with 2.6.16.22 and the megasas driver. I'm pretty sure it has to do with a smartctl -a <logical drive>. The SCSI layer gets all sorts of in a twist. megasas: waiting for 2 commands to complete - repeats a bunch of times then - sd 0:2:0:0: rejecting I/O to offline device Given a bit of wisdom in a driver distributed by dell which mentioned the controller not responding to a cache inqury... isn't the correct thing to do respond with some sort of unsupported response? not just ignore the query? I've hunted around for patches around this problem but haven't found any, of course "don't use smart against a logical drive" works, but I'm not the only one using these boxes and it does cause the system to go down. -- Keith Baker MetaCarta, Inc 350 Massachusetts Ave, 4th Floor Cambridge, MA 02139 USA www.metacarta.com <http://www.metacarta.com> - : send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html