我正在查看服务器的 SMART 日志，并注意到了这一点（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 -
注意 LifeTime（小时），其中日志行 1 似乎无序。
这个理由足以让人担忧吗，或者是否存在可能发生这种情况的良性情况？
以下是完整的 SMART 日志，除此之外，我认为没有什么问题，所以我并不太担心：
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！
答案1
在一些旧磁盘中，使用寿命（或通电时间）可能会不稳定地增加。但是，根据您的完整smartctl报告，情况似乎并非如此。
总体而言，您的磁盘看起来是健康的，但有一个问题：其属性#200 Multi_Zone_Error_Rate不为零，报告 1 个坏的/不成功的扇区写入。请留意此值，如果它增加，请更换磁盘。
答案2
以下内容不适用于 OP 的情况，但症状与主题相符（“SMART 自检日志中的无序生命周期”）：
今天，我注意到我的一个硬盘在自检日志中的“使用寿命”似乎只有 16 位：磁盘的开机时间 (Power_On_Hours) 为 70300 加上变化，但昨晚的自检记录的使用寿命略低于 4800 小时，两个数字之间的差恰好是 65536（=2^16）。