Wolfgang S. Rupprecht wrote:
Has anyone succeeded in spinning down disks under Fedora?
I've done the following and the "hdparm -C" does show the disk spun down, but the next time I look it is spun up, and it stays up. The disk is unmounted and I've stopped and disabled smartd, so it isn't accessing the disks. I don't think anything else is either. I'm probably missing a trick somewhere, but what???
disk=/dev/sdc hdparm -S 120 $disk hdparm -y $disk hdparm -C $disk-wolfgang
The value after -S is not seconds, for people who don't use that option. The drive will stay up a long time when accessed. As the man page says "The encoding of the timeout value is somewhat peculiar." If it doesn't spin down after an hour something is wrong.
One thing wrong might be jumpers, Other than that, I suspect something is still accessing it. udev?