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Elfan
Tux's lil' helper
Joined: 15 Aug 2006
Posts: 109
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 Posted: Fri Jul 13, 2007 6:16 pm Post subject: Interpreting smartd logs |
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A cron job runs logwatch nightly and part of the summary is from smartd. Over the past few days entries like the following have appeared:
/dev/hdb :
Prefailure: Seek_Error_Rate (7) changed to
100,
/dev/hdb :
Prefailure: Seek_Error_Rate (7) changed to
200, 100, 200, 100,
/dev/hdb :
Prefailure: Seek_Error_Rate (7) changed to
200, 100, 200,
Those are for Jul 09, 10, 12. No Seek_Error_Rate change is reported on the 11th. I know that just because something is labeled "prefailure" doesn't mean it is bad that it changes. Searching I could not find any instance of only this problem being reported. I have never seen it before. No error has been logged nor has any self test (run nightly) failed. Complete info below.
Is the Seek_Error_Rate attribute changing a sign of a problem?
| Code: |
# smartctl --all /dev/hdb
smartctl version 5.36 [i686-pc-linux-gnu] Copyright (C) 2002-6 Bruce Allen
Home page is http://smartmontools.sourceforge.net/
=== START OF INFORMATION SECTION ===
Model Family: Western Digital Caviar SE family
Device Model: WDC WD1200JB-00FUA0
Serial Number: WD-WMAES1461204
Firmware Version: 15.05R15
User Capacity: 120,034,123,776 bytes
Device is: In smartctl database [for details use: -P show]
ATA Version is: 6
ATA Standard is: Exact ATA specification draft version not indicated
Local Time is: Thu Jul 12 20:56:45 2007 EDT
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: (4005) seconds.
Offline data collection
capabilities: (0x79) SMART execute Offline immediate.
No Auto Offline data collection 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.
No General Purpose Logging support.
Short self-test routine
recommended polling time: ( 2) minutes.
Extended self-test routine
recommended polling time: ( 55) minutes.
Conveyance self-test routine
recommended polling time: ( 5) minutes.
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 0x000b 200 200 051 Pre-fail Always - 0
3 Spin_Up_Time 0x0007 144 136 021 Pre-fail Always - 3325
4 Start_Stop_Count 0x0032 100 100 040 Old_age Always - 104
5 Reallocated_Sector_Ct 0x0033 199 199 140 Pre-fail Always - 1
7 Seek_Error_Rate 0x000b 200 200 051 Pre-fail Always - 0
9 Power_On_Hours 0x0032 066 066 000 Old_age Always - 25273
10 Spin_Retry_Count 0x0013 100 100 051 Pre-fail Always - 0
11 Calibration_Retry_Count 0x0013 100 253 051 Pre-fail Always - 0
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 90
194 Temperature_Celsius 0x0022 112 253 000 Old_age Always - 38
196 Reallocated_Event_Count 0x0032 199 199 000 Old_age Always - 1
197 Current_Pending_Sector 0x0012 200 200 000 Old_age Always - 0
198 Offline_Uncorrectable 0x0012 200 200 000 Old_age Always - 0
199 UDMA_CRC_Error_Count 0x000a 200 253 000 Old_age Always - 0
200 Multi_Zone_Error_Rate 0x0009 200 155 051 Pre-fail Offline - 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% 150 -
# 2 Extended offline Aborted by host 90% 150 -
# 3 Short offline Completed without error 00% 136 -
# 4 Short offline Completed without error 00% 112 -
# 5 Short offline Completed without error 00% 89 -
# 6 Short offline Completed without error 00% 65 -
# 7 Short offline Completed without error 00% 42 -
# 8 Extended offline Completed without error 00% 19 -
# 9 Conveyance offline Completed without error 00% 1086 -
#10 Short offline Completed without error 00% 1062 -
#11 Short offline Completed without error 00% 1038 -
#12 Short offline Completed without error 00% 1014 -
#13 Short offline Completed without error 00% 990 -
#14 Short offline Completed without error 00% 966 -
#15 Extended offline Completed without error 00% 943 -
#16 Conveyance offline Completed without error 00% 918 -
#17 Short offline Completed without error 00% 894 -
#18 Short offline Completed without error 00% 872 -
#19 Short offline Completed without error 00% 848 -
#20 Short offline Completed without error 00% 824 -
#21 Short offline Completed without error 00% 800 -
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. |
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Veldrin
Veteran
Joined: 27 Jul 2004
Posts: 1945
Location: Zurich, Switzerland
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| Posted: Fri Jul 13, 2007 7:00 pm Post subject: |
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| Quote: | | Is the Seek_Error_Rate attribute changing a sign of a problem? |
Is a sign that your hardware is getting older. I would start to worry, if those values drop below their thresholds. And remember, smartd is only a tool, i might be that your hdd fails without warning.
Counter-Question: How old is your hdd, and how often has it been used?
I have had several cases, where the hdd failed after 3 years, and judging from the printout you gave, yours is about 2-3 years old.
cheers
V. |
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Elfan
Tux's lil' helper
Joined: 15 Aug 2006
Posts: 109
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| Posted: Fri Jul 13, 2007 9:33 pm Post subject: |
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Thank you for the reply. It's about 3-4 years old. It's been on for most of that time but not heavily accessed (ie the OS is on another disk). All of the data is backed up too (had my main disk die before, learned lesson).
I think one of Google's studies said smartd predicted about 50% of failure cases, which is better than the disk dieing on you. |
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Elfan
Tux's lil' helper
Joined: 15 Aug 2006
Posts: 109
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| Posted: Tue Jul 17, 2007 10:36 pm Post subject: |
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Reply from the smart mailing list:
| Quote: | I think this looks OK -- no obvious signs of trouble. You have one
reallocated sector but no current or offline pending sectors. |
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