On 5/13/2013 10:03 AM, Hannes Reinecke wrote: > The other LUNs haven't reported an error. But how do you know whether they > are still okay? The other LUNs might simply be idle, and no commands have > been send to them. Well, how about generating std inquiry against them if they are idle and the given HBA has a device in error state? Then you can make a rough approximation of what has failed, and escalate the error handling if all the devices at a particular level have failed. The midlayer may not even need to send the inquiries. If the individual device drivers (sd/st/etc) are responsible for monitoring and error recovery then they can be tasked with determining device availability as well. I think this solves other problems too. For example, the use of TUR in the midlayer, is a problem because it doesn't have enough knowledge about the possible check conditions being returned to act on them appropriately. -- To unsubscribe from this list: 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
