SMART自测日志中的无序生命周期

我正在偷看服务器的SMART日志，并注意到这一点（重点是我的）：

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% ***4433*** - # 2 Extended offline Completed without error 00% ***4804*** - # 3 Short offline Completed without error 00% ***3908*** - # 4 Extended offline Completed without error 00% 3126 - # 5 Extended offline Completed without error 00% 2847 - # 6 Short offline Completed without error 00% 2833 - # 7 Extended offline Completed without error 00% 2811 - # 8 Short offline Completed without error 00% 2803 - # 9 Extended offline Interrupted (host reset) 90% 2792 - #10 Extended offline Completed without error 00% 1796 - #11 Extended offline Completed without error 00% 1778 - #12 Extended offline Completed without error 00% 24 - #13 Extended offline Completed without error 00% 5 - 

请注意生命周期（小时），其中日志行1似乎无序。

这个理由是否足以令人担忧，还是有这种可能发生的良性情况？

以下是完整的SMART日志，否则对我来说看起来不错，所以我并不担心：

• 麻烦获取Western Digital 4TB HHD的smartd属性
• SMARTinput程序
• 我如何从服务器本地分析SMART日志？
• Hddtemp和驱动程序
• 有缺陷的服务器硬盘上的“核心费用”

 root@server ~ # smartctl -a /dev/sdb smartctl 6.5 2016-01-24 r4214 [x86_64-linux-4.4.0-66-generic] (local build) Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org === START OF INFORMATION SECTION === Model Family: Western Digital RE4 (SATA 6Gb/s) Device Model: WDC WD3000FYYZ-01UL1B2 Serial Number: WD-WCC136FFNX77 LU WWN Device Id: 5 0014ee 20bde640d Firmware Version: 01.01K03 User Capacity: 3,000,592,982,016 bytes [3.00 TB] Sector Size: 512 bytes logical/physical Rotation Rate: 7200 rpm Device is: In smartctl database [for details use: -P show] ATA Version is: ATA8-ACS (minor revision not indicated) SATA Version is: SATA 3.0, 6.0 Gb/s (current: 6.0 Gb/s) Local Time is: Fri Apr 7 17:31:43 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: (0x84) Offline data collection activity was suspended by an interrupting command from host. 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: (35220) 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: ( 382) minutes. Conveyance self-test routine recommended polling time: ( 5) minutes. SCT capabilities: (0x70bd) 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 - 1 3 Spin_Up_Time 0x0027 150 149 021 Pre-fail Always - 11466 4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 32 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 093 093 000 Old_age Always - 5476 10 Spin_Retry_Count 0x0032 100 253 000 Old_age Always - 0 11 Calibration_Retry_Count 0x0032 100 253 000 Old_age Always - 0 12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 32 183 Runtime_Bad_Block 0x0032 100 100 000 Old_age Always - 0 192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 3 193 Load_Cycle_Count 0x0032 200 200 000 Old_age Always - 28 194 Temperature_Celsius 0x0022 111 103 000 Old_age Always - 41 196 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 - 1 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% 4433 - # 2 Extended offline Completed without error 00% 4804 - # 3 Short offline Completed without error 00% 3908 - # 4 Extended offline Completed without error 00% 3126 - # 5 Extended offline Completed without error 00% 2847 - # 6 Short offline Completed without error 00% 2833 - # 7 Extended offline Completed without error 00% 2811 - # 8 Short offline Completed without error 00% 2803 - # 9 Extended offline Interrupted (host reset) 90% 2792 - #10 Extended offline Completed without error 00% 1796 - #11 Extended offline Completed without error 00% 1778 - #12 Extended offline Completed without error 00% 24 - #13 Extended offline Completed without error 00% 5 - 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. 

谢谢！