Store current profile into /etc/tuned/active_profile and read it on SIGHUP fromt here

tuned.py

@@ -70,7 +70,7 @@ if __name__ == "__main__":
 
 	controller = tuned.Controller(config_file, debug)
 
-	tuned.utils.handle_signal(signal.SIGHUP, controller.reload)
+	tuned.utils.handle_signal(signal.SIGHUP, controller.switch_to_default_profile)
 	tuned.utils.handle_signal([signal.SIGINT, signal.SIGTERM], controller.terminate)
 
 	if daemon:

tuned/controller.py

@@ -45,6 +45,8 @@ class Controller(exports.interfaces.ExportableInterface):
 		self._terminate = threading.Event()
 		if config_file:
 			self.config_file = config_file
+		else:
+			self.config_file = self.get_default_profile()
 
 	def run(self):
 		"""
@@ -66,6 +68,24 @@ class Controller(exports.interfaces.ExportableInterface):
 	def terminate(self):
 		self._terminate.set()
 
+	def get_default_profile(self):
+		try:
+			with open("/etc/tuned/active_profile", "r") as f:
+				profile = f.read()
+				if not profile.startswith("/"):
+					profile = "/usr/lib/tuned/%s/tuned.conf" % (profile)
+				return profile
+		except (OSError,IOError,EOFError) as e:
+			log.error("Cannot read active profile from /etc/tuned/active_profile: %s" % (e))
+			return ""
+
+	def switch_to_default_profile(self):
+		profile = self.get_default_profile()
+
+		if len(profile) != 0:
+			return switch_profile(profile)
+		return False
+
 	@property
 	def config_file(self):
 		return self._config_file
@@ -100,7 +120,9 @@ class Controller(exports.interfaces.ExportableInterface):
 
 	@exports.export("s", "b")
 	def switch_profile(self, profile):
-		cfg = "/usr/lib/tuned/%s/tuned.conf" % (profile)
+		cfg = profile
+		if not profile.startswith("/"):
+			cfg = "/usr/lib/tuned/%s/tuned.conf" % (profile)
 		try:
 			self.config_file = cfg
 		except ValueError as e:

tuned/daemon.py

@@ -50,6 +50,8 @@ class Daemon(object):
 		self._profile = profile.Profile(manager, self._config_file)
 		self._profile.load()
 
+		self.save_active_profile()
+
 		while not self._terminate.wait(10):
 			log.debug("updating monitors")
 			monitors_repo.update()
@@ -59,6 +61,13 @@ class Daemon(object):
 		manager.delete_all()
 		tuned.utils.storage.Storage.get_instance().cleanup()
 
+	def save_active_profile(self):
+		try:
+			with open("/etc/tuned/active_profile", "w") as f:
+				f.write(self._config_file)
+		except (OSError,IOError) as e:
+			log.error("Cannot write active profile into /etc/tuned/active_profile: %s" % (e))
+
 	@property
 	def config_file(self):
 		return self._config_file