1 # Copyright (c) 2014 The Chromium OS Authors. All rights reserved. 2 # Use of this source code is governed by a BSD-style license that can be 3 # found in the LICENSE file. 4 5 import logging, os, re 6 from autotest_lib.client.bin import test, utils 7 from autotest_lib.client.common_lib import error 8 9 10 class hardware_StorageWearoutDetect(test.test): 11 """ 12 Check wear out status for storage device available in SMART for SSD and 13 in ext_csd for eMMC version 5.0 or later. For previous version of eMMC, 14 it will be treat as data not available. 15 16 The test will be failed if: 17 - At least one SMART variable has value under its threshold 18 or 19 - eMMC wear out status variable is in 90-100% band or higher. 20 """ 21 22 version = 1 23 STORAGE_INFO_PATH = '/var/log/storage_info.txt' 24 STORAGE_INFO_UPDATE_PATH = '/usr/share/userfeedback/scripts/storage_info' 25 26 # Example " Model Number: LITEONIT LSS-32L6G-HP" 27 SSD_DETECT = r"\s*Model Number:\s*(?P<model>.*)\s*$" 28 29 # Example " Extended CSD rev 1.7 (MMC 5.0)" 30 MMC_DETECT = r"\s*Extended CSD rev.*MMC (?P<version>\d+.\d+)" 31 32 # Field meaning and example line that have failing attribute 33 # ID# ATTRIBUTE_NAME FLAGS VALUE WORST THRESH FAIL RAW_VALUE 34 # 184 End-to-End_Error PO--CK 001 001 097 NOW 135 35 SSD_FAIL = r"""\s*(?P<param>\S+\s\S+) # ID and attribute name 36 \s+[P-][O-][S-][R-][C-][K-] # flags 37 (\s+\d{3}){3} # three 3-digits numbers 38 \s+NOW # fail indicator""" 39 40 # Ex "Device life time estimation type A [DEVICE_LIFE_TIME_EST_TYP_A: 0x01]" 41 # 0x0a means 90-100% band, 0x0b means over 100% band -> find not digit 42 MMC_FAIL = r".*(?P<param>DEVICE_LIFE_TIME_EST_TYP_.): 0x0\D" 43 44 45 def run_once(self, use_cached_result=True): 46 """ 47 Run the test 48 49 @param use_cached_result: Use the result that generated when machine 50 booted or generate new one. 51 """ 52 53 if not use_cached_result: 54 if not os.path.exists(self.STORAGE_INFO_UPDATE_PATH): 55 msg = str('Test failed with error: %s not exist' 56 % self.STORAGE_INFO_UPDATE_PATH) 57 raise error.TestFail(msg) 58 utils.system(self.STORAGE_INFO_UPDATE_PATH) 59 60 # Check that storage_info file exist. 61 if not os.path.exists(self.STORAGE_INFO_PATH): 62 msg = str('Test failed with error: %s not exist' 63 % self.STORAGE_INFO_PATH) 64 raise error.TestFail(msg) 65 66 mmc_detect = False 67 ssd_detect = False 68 legacy_mmc = False 69 fail_msg = '' 70 71 with open(self.STORAGE_INFO_PATH) as f: 72 for line in f: 73 m = re.match(self.SSD_DETECT, line) 74 if m: 75 model = m.group('model') 76 ssd_detect = True 77 logging.info('Found SSD model %s', model) 78 79 m = re.match(self.MMC_DETECT, line) 80 if m: 81 version = m.group('version') 82 if float(version) < 5.0: 83 legacy_mmc = True 84 mmc_detect = True 85 logging.info('Found eMMC version %s', version) 86 87 m = re.match(self.SSD_FAIL, line, re.X) 88 if m: 89 param = m.group('param') 90 fail_msg += 'SSD failure ' + param 91 92 m = re.match(self.MMC_FAIL, line) 93 if m: 94 param = m.group('param') 95 fail_msg += 'MMC failure ' + param 96 97 if not ssd_detect and not mmc_detect: 98 raise error.TestFail('Can not detect storage device.') 99 100 if fail_msg: 101 msg = 'Detected wearout parameter:%s' % fail_msg 102 raise error.TestFail(msg) 103 104 if legacy_mmc: 105 msg = 'eMMC version %s detected. ' % version 106 msg += 'Wearout attributes are supported in eMMC 5.0 and later.' 107 logging.info(msg) 108
