> From: Jens Axboe [mailto:axboe@xxxxxxxxx] > Sent: Thursday, June 27, 2013 2:01 AM > See percentage_random in the man page (or --cmdhelp=percentage_random) In the tests I'm running, the sequence has to continue essentially uninterrupted with the occasional drop/transposition, but it can't contain LBAs that are wildly off. So '1 2 3 (4) 5 6' or '1 2 3 (5 4) 6' are good, '1 2 3 9999 4 5 6' is not. They trigger different specific behaviors in some hard drives. Is there a good place in the code to insert this sort or thing? z! -- To unsubscribe from this list: send the line "unsubscribe fio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html