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solsTiCe
Asked: 2015-03-14 09:25:29 +0800 CST

硬盘每秒发出滴答声

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我刚买了一个SSD来替换笔记本电脑中的HDD（Dell Inspiron 15 3521）。所以我迁移了Windows分区， Ubuntu的根分区，并制作了一个保留在硬盘上的bcache缓存分区。HDD现在位于 DVD 驱动器位置内的 HDD 盒中。/home

所以问题是我的硬盘驱动器 （？）有时会开始发出滴答声（但不是咔哒声），就像手表一样，但声音有点大，每秒或半秒，重复和连续。

这不仅很烦人，而且我担心HDD的健康。

特别奇怪的是，我的新设置对HDD的访问是有限的。HDD 上还有/var分区和交换区，但我有 8G RAM。和支持bcache /home分区。

我想可能是硬盘的磁头反复停车。但是在网上找到的一个简单脚本显示输出的Load_Cycle_Count值没有变化smartctl -a /dev/sdb

不断增加的令人担忧的值是Raw_Read_Error_Rate但据说对希捷硬盘毫无意义（此处为ST500LT012）

即使当我切换到控制台并停止lightdm时，该声音仍在继续。

但是，如果我使用gsmartcontrol运行一个简短的自检，那声音会突然停止。简短的自检顺利通过。我在备份bcache分区上运行badblocks，没有发现错误。/home

我不知道是什么原因引起的声音。它似乎不是一个锤击硬盘的过程。我只运行铬和一个终端

smartctl -a 的输出：

$ smartctl -a /dev/sdb
smartctl 6.2 2013-07-26 r3841 [x86_64-linux-3.16.0-31-generic] (local build)
Copyright (C) 2002-13, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Device Model:     ST500LT012-1DG142
Serial Number:    XXXXXXXX
LU WWN Device Id: 5 000c50 xxxxxxxxxx
Firmware Version: 0001SDM1
User Capacity:    500 107 862 016 bytes [500 GB]
Sector Sizes:     512 bytes logical, 4096 bytes physical
Rotation Rate:    5400 rpm
Device is:        Not in smartctl database [for details use: -P showall]
ATA Version is:   ATA8-ACS T13/1699-D revision 4
SATA Version is:  SATA 3.0, 6.0 Gb/s (current: 3.0 Gb/s)
Local Time is:    Sat Mar 21 01:12:10 2015 CET
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:        (    0) 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:    (   1) minutes.
Extended self-test routine
recommended polling time:    ( 103) minutes.
Conveyance self-test routine
recommended polling time:    (   2) minutes.
SCT capabilities:          (0x1035) SCT Status supported.
                    SCT Feature Control supported.
                    SCT Data Table supported.

SMART Attributes Data Structure revision number: 10
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED RAW_VALUE
  1 Raw_Read_Error_Rate     0x000f   119   099   006    Pre-fail  Always       -       226511072
  3 Spin_Up_Time            0x0003   100   099   000    Pre-fail  Always       -       0
  4 Start_Stop_Count        0x0032   099   099   020    Old_age   Always       -       1883
  5 Reallocated_Sector_Ct   0x0033   100   100   036    Pre-fail  Always       -       0
  7 Seek_Error_Rate         0x000f   076   060   030    Pre-fail  Always       -       47056689
  9 Power_On_Hours          0x0032   098   098   000    Old_age   Always       -       2357 (113 43 0)
 10 Spin_Retry_Count        0x0013   100   100   097    Pre-fail  Always       -       0
 12 Power_Cycle_Count       0x0032   099   099   020    Old_age   Always       -       1582
184 End-to-End_Error        0x0032   100   100   099    Old_age   Always       -       0
187 Reported_Uncorrect      0x0032   100   100   000    Old_age   Always       -       0
188 Command_Timeout         0x0032   100   100   000    Old_age   Always       -       0
189 High_Fly_Writes         0x003a   100   100   000    Old_age   Always       -       0
190 Airflow_Temperature_Cel 0x0022   079   048   045    Old_age   Always       -       21 (Min/Max 19/21)
191 G-Sense_Error_Rate      0x0032   100   100   000    Old_age   Always       -       100
192 Power-Off_Retract_Count 0x0032   100   100   000    Old_age   Always       -       46
193 Load_Cycle_Count        0x0032   099   099   000    Old_age   Always       -       3935
194 Temperature_Celsius     0x0022   021   052   000    Old_age   Always       -       21 (0 11 0 0 0)
197 Current_Pending_Sector  0x0012   100   100   000    Old_age   Always       -       0
198 Offline_Uncorrectable   0x0010   100   100   000    Old_age   Offline      -       0
199 UDMA_CRC_Error_Count    0x003e   200   200   000    Old_age   Always       -       0
240 Head_Flying_Hours       0x0000   098   098   000    Old_age   Offline      -       156817845913887
241 Total_LBAs_Written      0x0000   100   253   000    Old_age   Offline      -       6713158176
242 Total_LBAs_Read         0x0000   100   253   000    Old_age   Offline      -       8448037256
254 Free_Fall_Sensor        0x0032   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%      2354         -
# 2  Short offline       Completed without error       00%      2342         -
# 3  Short offline       Completed without error       00%      2339         -
# 4  Short offline       Completed without error       00%      2334         -
# 5  Short offline       Completed without error       00%      2333         -
# 6  Short offline       Completed without error       00%      2307         -
# 7  Short offline       Completed without error       00%      2306         -
# 8  Short offline       Completed without error       00%      2295         -
# 9  Short offline       Completed without error       00%      2295         -
#10  Short offline       Completed without error       00%      2291         -
#11  Short offline       Completed without error       00%      2283         -
#12  Short offline       Completed without error       00%      1198         -
#13  Extended offline    Completed without error       00%       937         -
#14  Short offline       Completed without error       00%       935         -
#15  Short offline       Completed without error       00%       356         -
#16  Extended offline    Completed without error       00%       122         -
#17  Short offline       Completed without error       00%       120         -
#18  Short offline       Completed without error       00%        14         -
#19  Short offline       Completed without error       00%         0         -

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.
hard-drive

1 个回答

  1. Best Answer

    我有同样的问题。bcache 是否（曾经？）处于回写模式？

    在写回模式下，bcache 在缓存中保留所谓的脏数据缓冲区。默认情况下，这是缓存大小的 10%。它这样做是为了收集顺序数据以写入支持设备，因为 HDD 擅长顺序 IO（请参阅 koverstreet 于 2012 年 5 月 15 日 3:43 UTC 在此链接发布的帖子）。

    对我来说，当我禁用此缓冲区时，咔哒声停止：

    sudo -i
echo 0 > /sys/block/bcache0/bcache/writeback_percent

    我在这里问了一个关于为什么超级用户会发生这种情况的问题。如果没有回应，我将提交错误报告！

    • 1

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