smartd 데몬을 이용한 HDD Disk 상태 관리

smartd 데몬을 이용한 HDD Disk 상태 관리


작성자 : 서진우


smartd 데몬은 서버에 장착된 하드디스크의 상태를 사전에 감지하여 데이터 손실
위험을 예방하는 도구이다.


사용은 smartctl 이란 명령을 통해 가능하다.


기본적으로 디스크의 전반적인 상태를 확인하는 방법이다.


smartctl -a <device_name>




[root@alang03 ~]# smartctl -a /dev/sdc
smartctl version 5.38 [x86_64-redhat-linux-gnu] Copyright (C) 2002-8 Bruce Allen
Home page is http://smartmontools.sourceforge.net/


=== START OF INFORMATION SECTION ===
Device Model:     ST31000528AS
Serial Number:    9VPA5HSS
Firmware Version: CC46
User Capacity:    1,000,204,886,016 bytes
Device is:        Not in smartctl database [for details use: -P showall]
ATA Version is:   8
ATA Standard is:  ATA-8-ACS revision 4
Local Time is:    Tue May 22 15:08:19 2012 KST
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: FAILED!
Drive failure expected in less than 24 hours. SAVE ALL DATA.
See vendor-specific Attribute list for failed Attributes.


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:      (  73) The previous self-test completed having
          a test element that failed and the test
          element that failed is not known.
Total time to complete Offline
data collection:     ( 609) 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 routinerecommended polling time:    ( 177) minutes.
Conveyance self-test routine
recommended polling time:    (   2) minutes.
SCT capabilities:          (0x103f) 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   115   099   006    Pre-fail  Always       –       86452274
  3 Spin_Up_Time            0x0003   095   095   000    Pre-fail  Always       –       0
  4 Start_Stop_Count        0x0032   100   100   020    Old_age   Always       –       94
  5 Reallocated_Sector_Ct   0x0033   026   026   036    Pre-fail  Always   FAILING_NOW 3064
  7 Seek_Error_Rate         0x000f   068   060   030    Pre-fail  Always       –       7295178
  9 Power_On_Hours          0x0032   086   086   000    Old_age   Always       –       12572
 10 Spin_Retry_Count        0x0013   100   100   097    Pre-fail  Always       –       0
 12 Power_Cycle_Count       0x0032   100   100   020    Old_age   Always       –       46
183 Unknown_Attribute       0x0032   100   100   000    Old_age   Always       –       0
184 Unknown_Attribute       0x0032   100   100   099    Old_age   Always       –       0
187 Reported_Uncorrect      0x0032   100   100   000    Old_age   Always       –       0
188 Unknown_Attribute       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   067   059   045    Old_age   Always       –       33 (Lifetime Min/Max 30/35)
194 Temperature_Celsius     0x0022   033   041   000    Old_age   Always       –       33 (0 7 0 0)
195 Hardware_ECC_Recovered  0x001a   047   009   000    Old_age   Always       –       86452274
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   100   253   000    Old_age   Offline      –       64196876185982
241 Unknown_Attribute       0x0000   100   253   000    Old_age   Offline      –       2277322949
242 Unknown_Attribute       0x0000   100   253   000    Old_age   Offline      –       2355915261


***********************************************************************************************


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: unknown failure    90%     12544         –
# 2  Extended offline    Completed: unknown failure    90%     12544         –
# 3  Extended offline    Completed: unknown failure    90%     12544         –


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.