On 18.09.2014, at 13:09, NeilBrown <neilb@xxxxxxx> wrote: > Thanks. There is nothing there which point to the device being spun down. > I tried spinning down disks on a couple of machines and no udev events were > created. So I'm a bit suspicious that there is something I'm missing. > > How exactly do you spin down the devices? > I use "hdparm -Y /dev/sda" or "hdparm -S 1 /dev/sda". I’m using spindown (https://code.google.com/p/spindown) which in turn uses sg3-utils (http://sg.danny.cz/sg/sg3_utils.html), issuing "sg_start —stop DEVICE" I can confirm there’s no change events with hdparm -Y here either. but with sg_start —stop there are. -- 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