Mike Accetta wrote: > The distinguishing factor appears to be the queue depth (4 works, 5 > and various values up to and including 31 fail) not the kernel version. > I am going to try running with the queue depth clamped at 4 to see if > this consistently masks the problem. I may also try some more experiments > if I have the time, like instrumenting what command was issued right > before the group that all time out or increasing the SCSI timeout, > in order to get some more insight into what is going on at the time of > the failure. Please report the result of 'hdparm -I /dev/sdX' where sdX is the problematic disk. Quite a few drives have problem with NCQ and we have to blacklist them. 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