Check Linux HDD using smartmontools

I’m using CentOS, and I would like to check any READ / WRITE RAW error in my hard disk or not. I like to check it often to prevent any data lost.
to Install,

[[email protected] src]# yum install smartmontools


If run, using smartctl

[[email protected] src]# smartctl –all /dev/sdb1
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: WDC WD5000AADS-00S9B0
Serial Number: WD-WCAV99805322
Firmware Version: 01.00A01
User Capacity: 500,107,862,016 bytes
Device is: Not in smartctl database [for details use: -P showall]
ATA Version is: 8
ATA Standard is: Exact ATA specification draft version not indicated
Local Time is: Thu May 5 12:26:11 2011 MYT
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: (11580) 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: ( 136) minutes.
Conveyance self-test routine
recommended polling time: ( 5) minutes.
SCT capabilities: (0x3037) 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 189 189 021 Pre-fail Always – 3541
4 Start_Stop_Count 0x0032 100 100 000 Old_age Always – 22
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 – 5507
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 – 20
192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always – 19
193 Load_Cycle_Count 0x0032 200 200 000 Old_age Always – 1749
194 Temperature_Celsius 0x0022 119 109 000 Old_age Always – 24
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
No self-tests have been logged. [To run self-tests, use: smartctl -t]

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.

[[email protected] src]# smartctl –all /dev/sda1
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: WDC WD1002FAEX-00Y9A0
Serial Number: WD-WCAW30635874
Firmware Version: 05.01D05
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: Exact ATA specification draft version not indicated
Local Time is: Thu May 5 12:26:27 2011 MYT
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: (16500) 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: ( 170) minutes.
Conveyance self-test routine
recommended polling time: ( 5) minutes.
SCT capabilities: (0x3035) 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 172 172 021 Pre-fail Always – 4358
4 Start_Stop_Count 0x0032 100 100 000 Old_age Always – 12
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 100 100 000 Old_age Always – 359
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 – 10
192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always – 9
193 Load_Cycle_Count 0x0032 200 200 000 Old_age Always – 4
194 Temperature_Celsius 0x0022 121 111 000 Old_age Always – 26
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 100 253 000 Old_age Offline – 0
199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age Always – 0
200 Multi_Zone_Error_Rate 0x0008 100 253 000 Old_age Offline – 0

SMART Error Log Version: 1
No Errors Logged

SMART Self-test log structure revision number 1
No self-tests have been logged. [To run self-tests, use: smartctl -t]

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.

Make sure that this line
1 Raw_Read_Error_Rate 0x002f 200 200 051 Pre-fail Always – 0
The report should be 0 ( Zero ), if not you can backup your data, and bring this HDD to claim. Make sure do it immediately to prevent data lost.


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