On Mon, July 6, 2009 7:37 am, Jon Nelson wrote: > OK, that's weird. mdadm /dev/md12 --wait doesn't, while mdadm --wait > /dev/md12 does. > That doesn't seem right to me. That's what I get for overloading the single-letter args. Bother --wait and --write-mostly can be given as -W, and mdadm doesn't distinguish between those three internally. So mdadm /dev/md12 -wait chooses MANAGE mode and the --wait is treated like --write-mostly, and as you haven't given any drives to add in write-mostly mode, it doesn't nothing. I probably should fix that one day. NeilBrown -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html