golden hour

/lib/python2.7/site-packages/tuned/plugins

File/Folder	Size	Actions
__init__.py	49 B
__init__.pyc	232 B
__init__.pyo	232 B
base.py	21.7 KB
base.pyc	24.43 KB
base.pyo	24.43 KB
decorators.py	983 B
decorators.pyc	1.52 KB
decorators.pyo	1.52 KB
exceptions.py	99 B
exceptions.pyc	460 B
exceptions.pyo	460 B
hotplug.py	2.97 KB
hotplug.pyc	4.09 KB
hotplug.pyo	4.09 KB
instance	-
plugin_audio.py	2.46 KB
plugin_audio.pyc	4.36 KB
plugin_audio.pyo	4.36 KB
plugin_bootloader.py	12.6 KB
plugin_bootloader.pyc	15.47 KB
plugin_bootloader.pyo	15.47 KB
plugin_cpu.py	12.95 KB
plugin_cpu.pyc	15.46 KB
plugin_cpu.pyo	15.42 KB
plugin_disk.py	13.77 KB
plugin_disk.pyc	16.92 KB
plugin_disk.pyo	16.92 KB
plugin_eeepc_she.py	2.04 KB
plugin_eeepc_she.pyc	3.3 KB
plugin_eeepc_she.pyo	3.3 KB
plugin_modules.py	3.8 KB
plugin_modules.pyc	5.64 KB
plugin_modules.pyo	5.64 KB
plugin_mounts.py	5.17 KB
plugin_mounts.pyc	6.36 KB
plugin_mounts.pyo	6.36 KB
plugin_net.py	14.02 KB
plugin_net.pyc	16.5 KB
plugin_net.pyo	16.5 KB
plugin_scheduler.py	23.2 KB
plugin_scheduler.pyc	25.28 KB
plugin_scheduler.pyo	25.28 KB
plugin_script.py	2.47 KB
plugin_script.pyc	3.77 KB
plugin_script.pyo	3.71 KB
plugin_scsi_host.py	2.59 KB
plugin_scsi_host.pyc	5.01 KB
plugin_scsi_host.pyo	5.01 KB
plugin_selinux.py	1.56 KB
plugin_selinux.pyc	2.96 KB
plugin_selinux.pyo	2.96 KB
plugin_sysctl.py	5.45 KB
plugin_sysctl.pyc	7.33 KB
plugin_sysctl.pyo	7.33 KB
plugin_sysfs.py	2.05 KB
plugin_sysfs.pyc	3.77 KB
plugin_sysfs.pyo	3.77 KB
plugin_systemd.py	4.82 KB
plugin_systemd.pyc	6.87 KB
plugin_systemd.pyo	6.87 KB
plugin_usb.py	1.49 KB
plugin_usb.pyc	3.06 KB
plugin_usb.pyo	3.06 KB
plugin_video.py	2.81 KB
plugin_video.pyc	4.2 KB
plugin_video.pyo	4.2 KB
plugin_vm.py	2.74 KB
plugin_vm.pyc	4.31 KB
plugin_vm.pyo	4.31 KB
repository.py	1.49 KB
repository.pyc	2.46 KB
repository.pyo	2.4 KB

Edit: plugin_scsi_host.py

import errno
from . import hotplug
from .decorators import *
import tuned.logs
import tuned.consts as consts
from tuned.utils.commands import commands
import os
import re

log = tuned.logs.get()

class SCSIHostPlugin(hotplug.Plugin):
	"""
	Plugin for tuning options of SCSI hosts.
	"""

def __init__(self, *args, **kwargs):
		super(SCSIHostPlugin, self).__init__(*args, **kwargs)

self._cmd = commands()

def _init_devices(self):
		super(SCSIHostPlugin, self)._init_devices()
		self._devices_supported = True
		self._free_devices = set()
		for device in self._hardware_inventory.get_devices("scsi"):
			if self._device_is_supported(device):
				self._free_devices.add(device.sys_name)

self._assigned_devices = set()

def _get_device_objects(self, devices):
		return [self._hardware_inventory.get_device("scsi", x) for x in devices]

@classmethod
	def _device_is_supported(cls, device):
		return  device.device_type == "scsi_host"

def _hardware_events_init(self):
		self._hardware_inventory.subscribe(self, "scsi", self._hardware_events_callback)

def _hardware_events_cleanup(self):
		self._hardware_inventory.unsubscribe(self)

def _hardware_events_callback(self, event, device):
		if self._device_is_supported(device):
			super(SCSIHostPlugin, self)._hardware_events_callback(event, device)

def _added_device_apply_tuning(self, instance, device_name):
		super(SCSIHostPlugin, self)._added_device_apply_tuning(instance, device_name)

def _removed_device_unapply_tuning(self, instance, device_name):
		super(SCSIHostPlugin, self)._removed_device_unapply_tuning(instance, device_name)

@classmethod
	def _get_config_options(cls):
		return {
			"alpm"               : None,
		}

def _instance_init(self, instance):
		instance._has_static_tuning = True
		instance._has_dynamic_tuning = False

def _instance_cleanup(self, instance):
		pass

def _get_alpm_policy_file(self, device):
		return os.path.join("/sys/class/scsi_host/", str(device), "link_power_management_policy")

@command_set("alpm", per_device = True)
	def _set_alpm(self, policy, device, sim):
		if policy is None:
			return None
		policy_file = self._get_alpm_policy_file(device)
		if not sim:
			if os.path.exists(policy_file):
				self._cmd.write_to_file(policy_file, policy)
			else:
				log.info("ALPM control file ('%s') not found, skipping ALPM setting for '%s'" % (policy_file, str(device)))
				return None
		return policy

@command_get("alpm")
	def _get_alpm(self, device, ignore_missing=False):
		policy_file = self._get_alpm_policy_file(device)
		policy = self._cmd.read_file(policy_file, no_error = True).strip()
		return policy if policy != "" else None