[ltp] HD does not spin down

[Laurent Gilson]

Hello,

> my harddrive does not spin down when in laptop-mode anymore. This is
> quite strange since I do not know what has changed and it has worked
> like a charm for the last months.

Well, just to be sure: did you update the kernel ?

> Problem: The disk does not spin down anymore although there is no disk
> activity. Invoking "hdparm -y /dev/sda" makes the disk spin down and
> leave it in standby-mode for quite some time. "hdparm -S
> <whatever_value> /dev/sda" does not make the disk spin down
> automatically anymore. That is why laptop-mode has no effect.
> "laptop_mode status" shows that the disk is in standby-mode although it
> is not. Playing around with "hdparm -B" does not help either.

Does "hdparm -B 0 /dev/sda; hdparm -S 10" work ?

> I do not know where I can find any debugging information to see why the
> disk does not spin down anymore.

The output of "hdparm /dev/sda" and "smartctl -all /dev/sda" may be  
helpful.

cu