| # Copyright (c) 2010 The Chromium OS Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| |
| import logging, random, os |
| from autotest_lib.client.bin import test, utils |
| from autotest_lib.client.common_lib import error |
| |
| SUSPEND_START = '/tmp/power_state_cycle_begin' |
| SUSPEND_END = '/tmp/power_state_cycle_end' |
| CRYPTOHOMESTRESS_START = '/tmp/cryptohomestress_begin' |
| CRYPTOHOMESTRESS_END = '/tmp/cryptohomestress_end' |
| |
| class platform_CryptohomeStress(test.test): |
| """This is a stress test of the file system in Chromium OS. |
| While performing the test, we will cycle through power |
| states, and interrupt disk activity. |
| """ |
| version = 1 |
| def initialize(self): |
| for signal_file in [SUSPEND_END]: |
| if os.path.exists(signal_file): |
| logging.warning('removing existing stop file %s', signal_file) |
| os.unlink(signal_file) |
| random.seed() # System time is fine. |
| |
| |
| def run_once(self, runtime=300): |
| # check that fio has started, waiting for up to TIMEOUT |
| utils.poll_for_condition( |
| lambda: os.path.exists(CRYPTOHOMESTRESS_START), |
| error.TestFail('fiostress not triggered.'), |
| timeout=30, sleep_interval=1) |
| open(SUSPEND_START, 'w').close() |
| # Pad disk stress runtime by 60s for safety. |
| runtime = runtime + 60 |
| utils.poll_for_condition( |
| lambda: os.path.exists(CRYPTOHOMESTRESS_END), |
| error.TestFail('fiostress runtime exceeded.'), |
| timeout=runtime, sleep_interval=10) |
| |
| def cleanup(self): |
| open(SUSPEND_END, 'w').close() |