hdparm apm support is run for all the block device even when only single device is set in profile file.

[tanurag]

tuned runs hdparm apm support check for all the devices even when we want to skip other block devices by using rule:
device=!sdb*
This takes a long time around 1m if no. of devices are alot or there are bunch of loop devices, even If we want to run the command just for one disk.

tuned/tuned/plugins/plugin_disk.py

Line 107 in 467782f

if self._use_hdparm and self._is_hdparm_apm_supported(device.sys_name):

[mwallnoefer]

Unfortunately, the tool does not provide any support for nvme devices. There the power saving mode is enabled as follows:

echo 'auto' > /sys/block/sda/device/power/control

[yarda]

Thanks for the info, we will try to add support.