[smartmontools-support] Offline_Uncorrectable 1, but no pending or reallocated blocks
Bruce Allen
bruce.allen at aei.mpg.de
Mon May 7 10:48:30 CEST 2018
Since your disk now passes an extended offline test and shows no pending
sectors it is probably OK. Unfortunately the way that
"Ofline_Uncorrectable" is used by manufacturers seems to be
unpredictable. You may be able to configure the smartd so that it
ignores this attribute (or only sends an email if it changes value).
On 02.05.18 20:12, Teemu Suikki wrote:
> Hello!
>
> I'm sure you are flooded with "is my drive failing?" emails, but I
> couldn't find clear explanation on my situation.
>
> This is a 4 year old WD Red 2TB. Few days ago, smartd reported that
> Extended offline test had failed, and Current_Pending_Sector was 1. I
> checked with "smartctl -a" and also Offline_Uncorrectable was 1.
>
> I read the "BadBlock HOWTO" and wrote the offending block with dd.
> This did change things, now Current_Pending_Sector is 0. However,
> number of reallocated blocks is still zero, and Offline_Uncorrectable
> is still 1... Extended offline test passes now.
>
> The problem is, smartd keeps mailing me every night about the
> uncorrectable sector. Drive appears to be working fine otherwise.
>
> Current output of "smartctl -a" below.
>
>
>
> ---------------
> smartctl 6.5 2016-01-24 r4214 [x86_64-linux-4.4.0-101-generic] (local build)
> Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org
>
> === START OF INFORMATION SECTION ===
> Model Family: Western Digital Red
> Device Model: WDC WD20EFRX-68EUZN0
> Serial Number: WD-WMC4M1009469
> LU WWN Device Id: 5 0014ee 0ae51caf7
> Firmware Version: 80.00A80
> User Capacity: 2 000 398 934 016 bytes [2,00 TB]
> Sector Sizes: 512 bytes logical, 4096 bytes physical
> Rotation Rate: 5400 rpm
> Device is: In smartctl database [for details use: -P show]
> ATA Version is: ACS-2 (minor revision not indicated)
> SATA Version is: SATA 3.0, 6.0 Gb/s (current: 6.0 Gb/s)
> Local Time is: Wed May 2 21:08:44 2018 EEST
> 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: (27060) 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: ( 273) minutes.
> Conveyance self-test routine
> recommended polling time: ( 5) minutes.
> SCT capabilities: (0x703d) 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 - 3
> 3 Spin_Up_Time 0x0027 183 172 021 Pre-fail
> Always - 3833
> 4 Start_Stop_Count 0x0032 100 100 000 Old_age
> Always - 133
> 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 047 047 000 Old_age
> Always - 39121
> 10 Spin_Retry_Count 0x0032 100 100 000 Old_age
> Always - 0
> 11 Calibration_Retry_Count 0x0032 100 100 000 Old_age
> Always - 0
> 12 Power_Cycle_Count 0x0032 100 100 000 Old_age
> Always - 133
> 192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age
> Always - 111
> 193 Load_Cycle_Count 0x0032 200 200 000 Old_age
> Always - 21
> 194 Temperature_Celsius 0x0022 108 102 000 Old_age
> Always - 39
> 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 - 1
> 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
> Num Test_Description Status Remaining
> LifeTime(hours) LBA_of_first_error
> # 1 Extended offline Completed without error 00% 39117 -
> # 2 Short offline Completed without error 00% 39102 -
> # 3 Short offline Completed without error 00% 39088 -
> # 4 Extended offline Completed without error 00% 39088 -
> # 5 Extended offline Completed: read failure 10% 39079
> 3846355664
> # 6 Short offline Completed without error 00% 39054 -
> # 7 Extended offline Completed: read failure 90% 39038
> 3846355664
> # 8 Short offline Completed without error 00% 39030 -
> # 9 Extended offline Completed: read failure 10% 39012
> 3846355664
> #10 Short offline Completed without error 00% 39006 -
> #11 Short offline Completed without error 00% 38982 -
> #12 Short offline Completed without error 00% 38958 -
> #13 Short offline Completed without error 00% 38934 -
> #14 Short offline Completed without error 00% 38910 -
> #15 Short offline Completed without error 00% 38886 -
> #16 Short offline Completed without error 00% 38862 -
> #17 Extended offline Completed without error 00% 38845 -
> #18 Short offline Completed without error 00% 38838 -
> #19 Short offline Completed without error 00% 38814 -
> #20 Short offline Completed without error 00% 38790 -
> #21 Short offline Completed without error 00% 38766 -
> 3 of 3 failed self-tests are outdated by newer successful extended
> offline self-test # 1
>
> 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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