I see that hdparm can be used to configure the length of time that a harddrive will wait idle before it goes into a power saving mode (i.e. standby). Also, I see that hdparm can be used to immediately send the harddrive to power saving mode.
Anyone know a way to query a harddrive for the length of time since it has been in the "active/idle" state? What about querying the time left until the next standby (provided no one access it)? Or querying the drive for how long it has been in the power saving mode?