Hello, On Sun, Jan 16, 2011 at 08:39:50AM -0800, Marc MERLIN wrote: > Anyway, the problem happens with both drives that I manually spin down and > drives that spin down on their own. I think it's not actually a 'real', > error but more an issue where drives cannot answer some SMART error when > they are spun down. It could be that the drives need to spin up to answer the smart command and the timeout on the smart commands is a bit too short for that to happen. Forcing a disk access before issuing the smart command could work around the problem. > That said, is it normal/expected for the PMP code to do a full bus reset > because of a SMART command that couldn't go through? Yeah, after a timeout, the driver doesn't know what state the controller / PMP / devices are in, so it's kind of forced to do full reset. Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html