Argon EON allow hard drive spin down with hd-idle – EON spin down idle disks

argon-eon.md

Argon EON's OLED display does not allow for tools like hd-idle to detect when drives are inactive due to constant temperature, RAID and usage checks, thus preventing spin down of the drives.

The responsible Python script is slowed down to a more senseful value using the decorator / extra bit of code below.

Simply insert the code from the Gist below in your /etc/argon/argonsysinfo.py and add @no_spinup above the following functions that already exist within the file:

• argonsysinfo_gethddtemp
• argonsysinfo_listhddusage
• argonsysinfo_listraid

It should look like this then:

@no_spinup
def argonsysinfo_gethddtemp():
    ...

Optionally, you can set SPINUP_ACTIVE_CHECK_MINUTES to another value. This is how often checks occurr and has to be about 25% bigger of the timeout you set in hd-idle's monitoring service. Note that OVM should use the default power options on the disks, as mentioned everywhere when installing hd-idle.

Enjoy quiet evenings with idle disks~

argonsysinfo.py

#!/usr/bin/python3

# Set the amount of minutes an active check is allowed to be performed when disks are active;
# this ensures hd-idle can identify the disks as idle and spin them down after a certain time
SPINUP_ACTIVE_CHECK_MINUTES = 30
_spinup_cache = {}

def no_spinup(f):
	""" Prevents disks from spinning back up for Argon's checks by acting as a ghetto-cache """
	from datetime import datetime, timedelta
	global _spinup_cache
	def _hdds_up() -> bool:
		command = 'hdparm -C /dev/sd*'
		try: 
			status = os.popen(command).read()
			status = status.split('\n')
		except IOError: return False
		except Exception: return True
		hdds_status = [s for s in status if s and 'drive state is' in s]
		return not any(hdd_status for hdd_status in hdds_status if 'standby' in hdd_status)

	def func(*args, **kwargs):
		fname = f.__name__
		if not _hdds_up():  # at least one HDD is currently idle
			if 'gethddtemp' in fname:  # ensure fan does not spin up when idle
				return {'/dev/sda': 0.00}
			return _spinup_cache.get(fname, {})
		if _spinup_cache.get('last_result') and \
			datetime.now() - timedelta(minutes=SPINUP_ACTIVE_CHECK_MINUTES) > _spinup_cache['last_result']:
			return _spinup_cache.get(fname, {})
		result = f(*args, **kwargs)
		_spinup_cache[fname] = result
		_spinup_cache['last_result'] = datetime.now()
		return result
	return func

Should line 29 be _spinup_cache as well? Rather than _signup_cache?

@microbrewer whoops – yes, corrected it