On Fri, July 17, 2009 2:12 pm, Tejun Heo wrote: > Tomasz Chmielewski wrote: >> And one of the disks is kicked out of RAID. >> >> Is it expected behaviour (although probably the error happens somewhere >> in the ata layer)? > > Yes, it's expected. Wakeup requires reset via EH and md requests have > FAILFAST flag set, so they never get retried. The behavior can be > changed tho. Hmmm... not entirely sure what to do at this point. Nope, 'md' requests do not get FAILFAST set. I tried that and easily found cases where it fails way too fast. FAILFAST seems to mean different things on different devices, making it useless in general (it is still useful in some specific cases such as multipath on devices which are expected to be used under multipath and so treat FAILFAST appropriately). NeilBrown -- 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
