Package: smartmontools Version: 6.5+svn4324-1~bpo8+1 Severity: important Starting some weeks (or months) ago – sorry I can't be more precise, the command 'smartctl -a [device]' displays wrong values for the attributes 'Power_On_Hours' and 'LifeTime'. As far as I can see in on case this seems to happen with Samsung SSD 850 PRO drives
Here an example: ----------------------------------------------------------------------------------------------- smartctl 6.6 2016-05-31 r4324 [x86_64-linux-4.9.0-0.bpo.3-amd64] (local build) Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org === START OF INFORMATION SECTION === Model Family: Samsung based SSDs Device Model: Samsung SSD 850 PRO 128GB Serial Number: XXXXXXXXXXXXXXX LU WWN Device Id: 5 002538 8701420da Firmware Version: EXM02B6Q User Capacity: 128.035.676.160 bytes [128 GB] Sector Size: 512 bytes logical/physical Rotation Rate: Solid State Device Device is: In smartctl database [for details use: -P show] ATA Version is: ACS-2, ATA8-ACS T13/1699-D revision 4c SATA Version is: SATA 3.1, 6.0 Gb/s (current: 6.0 Gb/s) Local Time is: Sun May 28 21:33:16 2017 CEST 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: (0x53) SMART execute Offline immediate. Auto Offline data collection on/off support. Suspend Offline collection upon new command. No 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: ( 68) minutes. SCT capabilities: (0x003d) SCT Status supported. SCT Error Recovery Control supported. SCT Feature Control supported. SCT Data Table supported. SMART Attributes Data Structure revision number: 1 Vendor Specific SMART Attributes with Thresholds: ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE 5 Reallocated_Sector_Ct 0x0033 100 100 010 Pre-fail Always - 0 9 Power_On_Hours 0x0032 096 096 000 Old_age Always - 15950 12 Power_Cycle_Count 0x0032 099 099 000 Old_age Always - 76 177 Wear_Leveling_Count 0x0013 099 099 000 Pre-fail Always - 2 179 Used_Rsvd_Blk_Cnt_Tot 0x0013 100 100 010 Pre-fail Always - 0 181 Program_Fail_Cnt_Total 0x0032 100 100 010 Old_age Always - 0 182 Erase_Fail_Count_Total 0x0032 100 100 010 Old_age Always - 0 183 Runtime_Bad_Block 0x0013 100 100 010 Pre-fail Always - 0 187 Uncorrectable_Error_Cnt 0x0032 100 100 000 Old_age Always - 0 190 Airflow_Temperature_Cel 0x0032 061 044 000 Old_age Always - 39 195 ECC_Error_Rate 0x001a 200 200 000 Old_age Always - 0 199 CRC_Error_Count 0x003e 100 100 000 Old_age Always - 0 235 POR_Recovery_Count 0x0012 099 099 000 Old_age Always - 15 241 Total_LBAs_Written 0x0032 099 099 000 Old_age Always - 147957410 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 Extended offline Completed without error 00% 15935 - # 2 Extended offline Completed without error 00% 15911 - # 3 Extended offline Completed without error 00% 15887 - # 4 Extended offline Completed without error 00% 15863 - # 5 Extended offline Completed without error 00% 15839 - # 6 Extended offline Completed without error 00% 15815 - # 7 Extended offline Completed without error 00% 15791 - # 8 Extended offline Completed without error 00% 15767 - # 9 Extended offline Completed without error 00% 15743 - #10 Extended offline Completed without error 00% 15720 - #11 Extended offline Completed without error 00% 15696 - #12 Extended offline Completed without error 00% 15672 - #13 Extended offline Completed without error 00% 15648 - #14 Extended offline Completed without error 00% 15625 - #15 Extended offline Completed without error 00% 15601 - #16 Extended offline Completed without error 00% 15585 - #17 Extended offline Completed without error 00% 15529 - #18 Extended offline Completed without error 00% 15505 - #19 Extended offline Completed without error 00% 15481 - #20 Extended offline Completed without error 00% 15457 - #21 Extended offline Completed without error 00% 15433 - 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. ----------------------------------------------------------------------------------------------- Based on the displayed Values the first startup time of the drive should be 'date -d "Sun May 28 21:33:16 2017 CEST - 15950 hours"' = Mon Aug 3 07:33:16 CEST 2015 but in truth the drive was purchased (Date of delivery note) Mon Apr 4 2016 and the drive was new. So the maximal possible value for Power_On_Hours could be only 10070 hours. Because the drive was not up 24/7 during this time, the real value should be less than 10000 hours. Another irritating thing is the the output of the following drives: ----------------------------------------------------------------------------------------------- smartctl 6.6 2016-05-31 r4324 [x86_64-linux-4.9.0-0.bpo.3-amd64] (local build) Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org === START OF INFORMATION SECTION === Model Family: Western Digital Green Device Model: WDC WD20EZRX-00DC0B0 Serial Number: WD-XXXXXXXXXXXX LU WWN Device Id: 5 0014ee 602ca4260 Firmware Version: 80.00A80 User Capacity: 2.000.398.934.016 bytes [2,00 TB] Sector Sizes: 512 bytes logical, 4096 bytes physical Device is: In smartctl database [for details use: -P show] ATA Version is: ACS-2 (minor revision not indicated) SATA Version is: SATA 3.0, 6.0 Gb/s (current: 6.0 Gb/s) Local Time is: Sun May 28 21:33:17 2017 CEST 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: (0x82) Offline data collection activity was completed without error. Auto Offline Data Collection: Enabled. 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: (26580) seconds. Offline data collection capabilities: (0x7b) SMART execute Offline immediate. Auto Offline data collection on/off support. Suspend Offline collection upon new command. Offline surface scan supported. Self-test supported. 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: ( 268) minutes. Conveyance self-test routine recommended polling time: ( 5) minutes. SCT capabilities: (0x70b5) SCT Status supported. SCT Feature Control supported. SCT Data Table supported. SMART Attributes Data Structure revision number: 16 Vendor Specific SMART Attributes with Thresholds: ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE 1 Raw_Read_Error_Rate 0x002f 200 200 051 Pre-fail Always - 0 3 Spin_Up_Time 0x0027 176 174 021 Pre-fail Always - 4200 4 Start_Stop_Count 0x0032 094 094 000 Old_age Always - 6620 5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail Always - 0 7 Seek_Error_Rate 0x002e 200 200 000 Old_age Always - 0 9 Power_On_Hours 0x0032 064 063 000 Old_age Always - 26675 10 Spin_Retry_Count 0x0032 100 100 000 Old_age Always - 0 11 Calibration_Retry_Count 0x0032 100 100 000 Old_age Always - 0 12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 154 192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 97 193 Load_Cycle_Count 0x0032 185 185 000 Old_age Always - 46444 194 Temperature_Celsius 0x0022 105 084 000 Old_age Always - 42 196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0 197 Current_Pending_Sector 0x0032 200 200 000 Old_age Always - 0 198 Offline_Uncorrectable 0x0030 200 200 000 Old_age Offline - 0 199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age Always - 33 200 Multi_Zone_Error_Rate 0x0008 200 200 000 Old_age Offline - 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 Extended offline Completed without error 00% 26663 - # 2 Extended offline Completed without error 00% 26639 - # 3 Extended offline Completed without error 00% 26615 - # 4 Extended offline Completed without error 00% 26591 - # 5 Extended offline Completed without error 00% 26567 - # 6 Extended offline Completed without error 00% 26543 - # 7 Extended offline Completed without error 00% 26519 - # 8 Extended offline Completed without error 00% 26495 - # 9 Extended offline Completed without error 00% 26471 - #10 Extended offline Completed without error 00% 26449 - #11 Extended offline Completed without error 00% 26425 - #12 Extended offline Completed without error 00% 26401 - #13 Extended offline Completed without error 00% 26377 - #14 Extended offline Completed without error 00% 26331 - #15 Extended offline Completed without error 00% 26317 - #16 Extended offline Completed without error 00% 27438 - #17 Extended offline Completed without error 00% 27414 - #18 Extended offline Completed without error 00% 27390 - #19 Extended offline Completed without error 00% 27366 - #20 Extended offline Completed without error 00% 27342 - #21 Extended offline Completed without error 00% 27318 - 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. ----------------------------------------------------------------------------------------------- smartctl 6.6 2016-05-31 r4324 [x86_64-linux-4.9.0-0.bpo.3-amd64] (local build) Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org === START OF INFORMATION SECTION === Model Family: Western Digital Red Device Model: WDC WD60EFRX-68MYMN1 Serial Number: WD-XXXXXXXXXXXX LU WWN Device Id: 5 0014ee 26002c7d3 Firmware Version: 82.00A82 User Capacity: 6.001.175.126.016 bytes [6,00 TB] Sector Sizes: 512 bytes logical, 4096 bytes physical Rotation Rate: 5700 rpm Device is: In smartctl database [for details use: -P show] ATA Version is: ACS-2, ACS-3 T13/2161-D revision 3b SATA Version is: SATA 3.1, 6.0 Gb/s (current: 6.0 Gb/s) Local Time is: Sun May 28 21:33:17 2017 CEST 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: (0x82) Offline data collection activity was completed without error. Auto Offline Data Collection: Enabled. 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: ( 4784) seconds. Offline data collection capabilities: (0x7b) SMART execute Offline immediate. Auto Offline data collection on/off support. Suspend Offline collection upon new command. Offline surface scan supported. Self-test supported. 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: ( 702) minutes. Conveyance self-test routine recommended polling time: ( 5) minutes. SCT capabilities: (0x303d) SCT Status supported. SCT Error Recovery Control supported. SCT Feature Control supported. SCT Data Table supported. SMART Attributes Data Structure revision number: 16 Vendor Specific SMART Attributes with Thresholds: ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE 1 Raw_Read_Error_Rate 0x002f 200 200 051 Pre-fail Always - 0 3 Spin_Up_Time 0x0027 190 185 021 Pre-fail Always - 9483 4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 103 5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail Always - 0 7 Seek_Error_Rate 0x002e 200 200 000 Old_age Always - 0 9 Power_On_Hours 0x0032 073 072 000 Old_age Always - 20077 10 Spin_Retry_Count 0x0032 100 100 000 Old_age Always - 0 11 Calibration_Retry_Count 0x0032 100 100 000 Old_age Always - 0 12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 103 192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 36 193 Load_Cycle_Count 0x0032 197 197 000 Old_age Always - 11695 194 Temperature_Celsius 0x0022 113 095 000 Old_age Always - 39 196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0 197 Current_Pending_Sector 0x0032 200 200 000 Old_age Always - 0 198 Offline_Uncorrectable 0x0030 200 200 000 Old_age Offline - 0 199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age Always - 0 200 Multi_Zone_Error_Rate 0x0008 200 200 000 Old_age Offline - 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 Extended offline Completed without error 00% 20069 - # 2 Extended offline Completed without error 00% 20045 - # 3 Extended offline Completed without error 00% 20021 - # 4 Extended offline Completed without error 00% 19997 - # 5 Extended offline Completed without error 00% 19973 - # 6 Extended offline Completed without error 00% 19949 - # 7 Extended offline Completed without error 00% 19925 - # 8 Extended offline Completed without error 00% 19901 - # 9 Extended offline Completed without error 00% 19877 - #10 Extended offline Completed without error 00% 19854 - #11 Extended offline Completed without error 00% 19830 - #12 Extended offline Completed without error 00% 19806 - #13 Extended offline Completed without error 00% 19782 - #14 Extended offline Completed without error 00% 19725 - #15 Extended offline Completed without error 00% 19638 - #16 Extended offline Completed without error 00% 20807 - #17 Extended offline Completed without error 00% 20783 - #18 Extended offline Completed without error 00% 20759 - #19 Extended offline Completed without error 00% 20735 - #20 Extended offline Completed without error 00% 20711 - #21 Extended offline Completed without error 00% 20687 - 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. ----------------------------------------------------------------------------------------------- I've absolutely no idea why the value of the LifeTime attibute varies instead to increase. Remark: The included examples are from disks in another machine but with identical software -- System Information: Debian Release: 8.8 APT prefers stable-updates APT policy: (500, 'stable-updates'), (500, 'stable') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 4.9.0-0.bpo.3-amd64 (SMP w/6 CPU cores) Locale: LANG=de_DE.utf8, LC_CTYPE=de_DE.utf8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) Versions of packages smartmontools depends on: ii debianutils 4.4+b1 ii init-system-helpers 1.22 ii libc6 2.19-18+deb8u9 ii libcap-ng0 0.7.4-2 ii libgcc1 1:4.9.2-10 ii libselinux1 2.3-2 ii libstdc++6 4.9.2-10 ii lsb-base 4.1+Debian13+nmu1 Versions of packages smartmontools recommends: ii bsd-mailx [mailx] 8.1.2-0.20141216cvs-2 Versions of packages smartmontools suggests: pn gsmartcontrol <none> pn smart-notifier <none> -- Configuration Files: /etc/default/smartmontools changed: start_smartd=yes /etc/smartd.conf changed: /dev/sdf -a -d sat -o on -S on -s (L/../.././00) -t -m root /dev/sdg -a -d sat -o on -S on -s (L/../.././01) -t -m root -- no debconf information