S.M.A.R.T生存时间小时重置为零

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问题:

我使用S.M.A.R.T .selftest测试所有硬盘和SSD,我每天做一个简短的测试,每月做一个长的测试。

我的其中一个SSD表现出奇怪的行为,因为使用寿命似乎恢复为零。

用于启动测试的命令(通过crontab启动的脚本)是:


smartctl --test=short $DISK



以下是显示奇怪行为的错误日志的副本:


 smart self-test log structure revision number 1


 num test_description status remaining lifetime(hours) lba_of_first_error


 # 1 short offline completed without error 00% 110 -


 # 2 short offline completed without error 00% 86 -


 # 3 short offline completed without error 00% 62 -


 # 4 short offline completed without error 00% 38 -


 # 5 short offline completed without error 00% 14 -


 # 6 short offline completed without error 00% 1166 -


 # 7 short offline completed without error 00% 1142 -


 # 8 short offline completed without error 00% 1117 -


 # 9 short offline completed without error 00% 1093 -


 #10 short offline completed without error 00% 1069 -


 #11 short offline completed without error 00% 1045 -


 #12 short offline completed without error 00% 1021 -


 #13 short offline completed without error 00% 997 -


 #14 short offline completed without error 00% 973 -


 #15 short offline completed without error 00% 949 -


 #16 short offline completed without error 00% 925 -


 #17 short offline completed without error 00% 901 -


 #18 extended offline completed without error 00% 897 -


 #19 short offline completed without error 00% 877 -


 #20 short offline completed without error 00% 853 -


 #21 short offline completed without error 00% 829 -



以下是设备上的具体信息:

smartctl -a $DISK


/dev/disk0


smartctl 7.1 2019-12-30 r5022 [Darwin 18.7.0 x86_64] (local build)


Copyright (C) 2002-19, Bruce Allen, Christian Franke, www.smartmontools.org



=== START OF INFORMATION SECTION ===


Model Family: Apple SD/SM/TS...E/F/G SSDs


Device Model: APPLE SSD SM1024F


Firmware Version: UXM8JA1Q


User Capacity: 1,000,555,581,440 bytes [1.00 TB]


Sector Sizes: 512 bytes logical, 4096 bytes physical


Rotation Rate: Solid State Device


Device is: In smartctl database [for details use: -P show]


ATA Version is: ATA8-ACS T13/1699-D revision 4c


SATA Version is: SATA 3.0, 6.0 Gb/s (current: 6.0 Gb/s)


Local Time is: Sat Nov 7 15:18:13 2020 EST


SMART support is: Available - device has SMART capability.


SMART support is: Enabled



=== START OF READ SMART DATA SECTION ===


SMART overall-health self-assessment test result: PASSED



General SMART Values:


Offline data collection status: (0x00) Offline data collection activity


 was never started.


 Auto Offline Data Collection: Disabled.


Self-test execution status: ( 0) The previous self-test routine completed


 without error or no self-test has ever


 been run.


Total time to complete Offline


data collection: ( 0) seconds.


Offline data collection


capabilities: (0x5f) SMART execute Offline immediate.


 Auto Offline data collection on/off support.


 Abort Offline collection upon new


 command.


 Offline surface scan supported.


 Self-test supported.


 No Conveyance Self-test supported.


 Selective Self-test supported.


SMART capabilities: (0x0003) Saves SMART data before entering


 power-saving mode.


 Supports SMART auto save timer.


Error logging capability: (0x01) Error logging supported.


 General Purpose Logging supported.


Short self-test routine


recommended polling time: ( 2) minutes.


Extended self-test routine


recommended polling time: ( 10) minutes.



SMART Attributes Data Structure revision number: 40


Vendor Specific SMART Attributes with Thresholds:


ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE


 1 Raw_Read_Error_Rate 0x001a 200 200 000 Old_age Always - 0


 5 Reallocated_Sector_Ct 0x0033 100 100 000 Pre-fail Always - 0


 9 Power_On_Hours 0x0032 093 093 000 Old_age Always - 33168


 12 Power_Cycle_Count 0x0032 099 099 000 Old_age Always - 876


169 Unknown_Apple_Attrib 0x0013 253 253 010 Pre-fail Always - 7105251654656


173 Wear_Leveling_Count 0x0032 190 190 100 Old_age Always - 30084956220


174 Host_Reads_MiB 0x0022 099 099 000 Old_age Always - 77353745


175 Host_Writes_MiB 0x0022 099 099 000 Old_age Always - 58090980


192 Power-Off_Retract_Count 0x0012 099 099 000 Old_age Always - 202


194 Temperature_Celsius 0x0022 053 053 000 Old_age Always - 47 (Min/Max 23/72)


197 Current_Pending_Sector 0x0022 100 100 000 Old_age Always - 0


199 UDMA_CRC_Error_Count 0x001a 200 200 000 Old_age Always - 0


240 Unknown_SSD_Attribute 0x0022 100 100 000 Old_age Always - 0



SMART Error Log Version: 1


No Errors Logged



SMART Self-test log structure revision number 1


Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error


# 1 Short offline Completed without error 00% 110 -


# 2 Short offline Completed without error 00% 86 -


# 3 Short offline Completed without error 00% 62 -


# 4 Short offline Completed without error 00% 38 -


# 5 Short offline Completed without error 00% 14 -


# 6 Short offline Completed without error 00% 1166 -


# 7 Short offline Completed without error 00% 1142 -


# 8 Short offline Completed without error 00% 1117 -


# 9 Short offline Completed without error 00% 1093 -


#10 Short offline Completed without error 00% 1069 -


#11 Short offline Completed without error 00% 1045 -


#12 Short offline Completed without error 00% 1021 -


#13 Short offline Completed without error 00% 997 -


#14 Short offline Completed without error 00% 973 -


#15 Short offline Completed without error 00% 949 -


#16 Short offline Completed without error 00% 925 -


#17 Short offline Completed without error 00% 901 -


#18 Extended offline Completed without error 00% 897 -


#19 Short offline Completed without error 00% 877 -


#20 Short offline Completed without error 00% 853 -


#21 Short offline Completed without error 00% 829 -



SMART Selective self-test log data structure revision number 1


 SPAN MIN_LBA MAX_LBA CURRENT_TEST_STATUS


 1 0 0 Not_testing


 2 0 0 Not_testing


 3 0 0 Not_testing


 4 0 0 Not_testing


 5 0 0 Not_testing


Selective self-test flags (0x0):


 After scanning selected spans, do NOT read-scan remainder of disk.


If Selective self-test is pending on power-up, resume after 0 minute delay.




答案1:

从SMART属性9中看到,完整报告中正确报告了SSD的使用寿命:


 9 Power_On_Hours 0x0032 093 093 000 Old_age Always - 33168



来自smartctl手册页

它以Dd HH:MM:SS.msec的形式显示,其中D是天数,HH是小时,MM是分钟,SS是秒,毫秒是毫秒。[请注意:此时间戳记会在2 ^ 32毫秒或49天17小时2分47.296秒后结束。 ]


答案2:

大多数具有SMART的磁盘将使用16位存储该值,从而可以在重置之前提供65,535小时。


SMART Self-test log structure revision number 1


Num Test_Description Status Remaining LifeTime(hours) LBA_of


# 1 Short offline Completed without error 00% 8823 -


# 2 Short offline Completed without error 00% 65041 -


# 3 Short offline Completed without error 00% 63134 -


# 4 Short offline Completed without error 00% 43108 -


# 5 Short offline Completed without error 00% 42235 -


# 6 Short offline Completed without error 00% 30613 -


# 7 Short offline Completed without error 00% 11535 -


# 8 Short offline Completed without error 00% 5934 -


# 9 Short offline Completed without error 00% 2667 -


#10 Short offline Completed without error 00% 2666 -


#11 Short offline Completed without error 00% 54241 -


#12 Short offline Completed without error 00% 47079 -


#13 Short offline Completed without error 00% 43109 -


#14 Short offline Completed without error 00% 43071 ... etc



是的,该磁盘具有大约16年的活动通电时间。


9 Power_On_Hours 0x0032 001 001 000 Old_age Always 139895



或在非apple系统中检查apple固件磁盘。



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