My array went through its monthly parity check and one of the drives is showing 813 errors, I have looked through the syslog (attached and they appear to be read errors.

 

What is the general concensus now should I swap the drive out or is it nothing too much to worry about?

 

Actually looking at the log it appeary the check was run as "check" NOCORRECT presulmably that means that the data has not been corrected?

 

If so should I rerun the parity check with the correct option?

syslog_Jan_31_15.zip

So should I run the parity check with the correct option or will this damage my array?

Parity checks never write to the data drives, and NOCORRECT means it won't write to the parity drive either. In addition to the read errors on disk 4, were there parity errors?

 

Post a smart report of disk 4.

 

Also you are on v5rc12a. You should consider upgrading to the current stable version of unRAID 5.0.6

There are no parity errors showing in the syslog and the menu says that the last parity check was on the 1st Feb 2015 finding 0 errors..

 

However the error column was showing 813 errors, but now I have rebooted the system that is now reading 0.

 

I ran a short smart test on the drive and found this which says it passed but then says completed: read failure

 

smartctl -a -d ata /dev/sde

smartctl 5.40 2010-10-16 r3189 [i486-slackware-linux-gnu] (local build)

Copyright © 2002-10 by Bruce Allen, http://smartmontools.sourceforge.net

 

=== START OF INFORMATION SECTION ===

Model Family:    SAMSUNG SpinPoint F2 EG series

Device Model:    SAMSUNG HD154UI

Serial Number:    S1Y6J9BS807554

Firmware Version: 1AG01118

User Capacity:    1,500,301,910,016 bytes

Device is:        In smartctl database [for details use: -P show]

ATA Version is:  8

ATA Standard is:  ATA-8-ACS revision 3b

Local Time is:    Mon Feb  2 23:53:14 2015 GMT

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:  (0x00) Offline data collection activity

was never started.

Auto Offline Data Collection: Disabled.

Self-test execution status:      ( 114) The previous self-test completed having

the read element of the test failed.

Total time to complete Offline

data collection: (20645) 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: ( 255) minutes.

Conveyance self-test routine

recommended polling time: (  36) minutes.

SCT capabilities:       (0x003f) 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    0x000f  099  099  051    Pre-fail  Always      -      160

  3 Spin_Up_Time            0x0007  071  071  011    Pre-fail  Always      -      9610

  4 Start_Stop_Count        0x0032  096  096  000    Old_age  Always      -      3539

  5 Reallocated_Sector_Ct  0x0033  100  100  010    Pre-fail  Always      -      0

  7 Seek_Error_Rate        0x000f  100  100  051    Pre-fail  Always      -      0

  8 Seek_Time_Performance  0x0025  100  100  015    Pre-fail  Offline      -      14667

  9 Power_On_Hours          0x0032  092  092  000    Old_age  Always      -      42594

10 Spin_Retry_Count        0x0033  100  100  051    Pre-fail  Always      -      0

11 Calibration_Retry_Count 0x0012  100  100  000    Old_age  Always      -      0

12 Power_Cycle_Count      0x0032  100  100  000    Old_age  Always      -      325

13 Read_Soft_Error_Rate    0x000e  099  099  000    Old_age  Always      -      160

183 Runtime_Bad_Block      0x0032  100  100  000    Old_age  Always      -      0

184 End-to-End_Error        0x0033  100  100  000    Pre-fail  Always      -      0

187 Reported_Uncorrect      0x0032  100  100  000    Old_age  Always      -      234

188 Command_Timeout        0x0032  100  100  000    Old_age  Always      -      0

190 Airflow_Temperature_Cel 0x0022  093  067  000    Old_age  Always      -      7 (Min/Max 7/7)

194 Temperature_Celsius    0x0022  087  068  000    Old_age  Always      -      13 (Min/Max 7/13)

195 Hardware_ECC_Recovered  0x001a  100  100  000    Old_age  Always      -      2365

196 Reallocated_Event_Count 0x0032  100  100  000    Old_age  Always      -      0

197 Current_Pending_Sector  0x0012  100  100  000    Old_age  Always      -      2

198 Offline_Uncorrectable  0x0030  100  100  000    Old_age  Offline      -      1

199 UDMA_CRC_Error_Count    0x003e  100  100  000    Old_age  Always      -      0

200 Multi_Zone_Error_Rate  0x000a  100  100  000    Old_age  Always      -      0

201 Soft_Read_Error_Rate    0x000a  253  253  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: read failure      20%    42594        1536964556

# 2  Short offline      Completed: read failure      20%    42594        1536964640

# 3  Short offline      Completed without error      00%    31269        -

# 4  Short offline      Completed without error      00%    31269        -

 

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.

Seeing as how the drive has almost 5 years of power on time and is starting to show signs of having problems, I'd replace it. Have you looked at the smart reports for the rest of your drives? If they are all healthy, I'd replace this drive now.

Ran a Smart test on all the remaining drives and no faults.

 

Just read error of disk 4 as shown above.

 

Replace and rebuild?

Before I replace this drive, presumably my parity is correct as I did a "check NOCORRECT"?

 

So just unassign the drive, shyt down the array, replace, assign the drive and rebuild?

I don't think you have to do anything in the array assignments until after you put in the new drive. Unraid will figure out the old drive is missing, and when you select the new drive it will say something like "wrong disk", and offer the option to rebuild and expand onto the new disk after you check the box.

I replaced the drive for a new 3Tb one and all is well.

 

However the drived that was showing problems I put back into a spare slot in the array and have run PreClear on it for three cycles without error.

 

Is it safe to add back to the array?

I replaced the drive for a new 3Tb one and all is well.

 

However the drived that was showing problems I put back into a spare slot in the array and have run PreClear on it for three cycles without error.

 

Is it safe to add back to the array?

 

Run a smart long test on it and see if it completes now.

OK I ran a short and a long Smart test and both returned OK.

 

Does this mean it is OK to put back into the array? Or is it still a bit iffy?

 

If so what is likely to have caused the error?

 

Ridley

Bump

Post the long smart test

=== START OF READ SMART DATA SECTION ===

SMART overall-health self-assessment test result: PASSED

 

General SMART Values:

Offline data collection status:  (0x00) Offline data collection activity

was never started.

Auto Offline Data Collection: Disabled.

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: (20645) 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: ( 255) minutes.

Conveyance self-test routine

recommended polling time: (  36) minutes.

SCT capabilities:       (0x003f) 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    0x000f  100  093  051    Pre-fail  Always      -      5

  3 Spin_Up_Time            0x0007  050  050  011    Pre-fail  Always      -      15570

  4 Start_Stop_Count        0x0032  096  096  000    Old_age  Always      -      3546

  5 Reallocated_Sector_Ct  0x0033  100  100  010    Pre-fail  Always      -      0

  7 Seek_Error_Rate        0x000f  100  100  051    Pre-fail  Always      -      0

  8 Seek_Time_Performance  0x0025  100  100  015    Pre-fail  Offline      -      14275

  9 Power_On_Hours          0x0032  092  092  000    Old_age  Always      -      42673

10 Spin_Retry_Count        0x0033  100  100  051    Pre-fail  Always      -      0

11 Calibration_Retry_Count 0x0012  100  100  000    Old_age  Always      -      0

12 Power_Cycle_Count      0x0032  100  100  000    Old_age  Always      -      329

13 Read_Soft_Error_Rate    0x000e  100  093  000    Old_age  Always      -      5

183 Runtime_Bad_Block      0x0032  100  100  000    Old_age  Always      -      0

184 End-to-End_Error        0x0033  100  100  000    Pre-fail  Always      -      0

187 Reported_Uncorrect      0x0032  100  100  000    Old_age  Always      -      235

188 Command_Timeout        0x0032  100  100  000    Old_age  Always      -      0

190 Airflow_Temperature_Cel 0x0022  089  067  000    Old_age  Always      -      11 (Min/Max 6/11)

194 Temperature_Celsius    0x0022  087  068  000    Old_age  Always      -      13 (Min/Max 6/13)

195 Hardware_ECC_Recovered  0x001a  100  100  000    Old_age  Always      -      1431

196 Reallocated_Event_Count 0x0032  100  100  000    Old_age  Always      -      0

197 Current_Pending_Sector  0x0012  100  100  000    Old_age  Always      -      0

198 Offline_Uncorrectable  0x0030  100  100  000    Old_age  Offline      -      0

199 UDMA_CRC_Error_Count    0x003e  100  100  000    Old_age  Always      -      0

200 Multi_Zone_Error_Rate  0x000a  100  100  000    Old_age  Always      -      0

201 Soft_Read_Error_Rate    0x000a  253  253  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  Extended offline    Completed without error      00%    42667        -

# 2  Short offline      Completed without error      00%    42661        -

# 3  Short offline      Completed: read failure      20%    42594        1536964556

# 4  Short offline      Completed: read failure      20%    42594        1536964640

# 5  Short offline      Completed without error      00%    31269        -

# 6  Short offline      Completed without error      00%    31269        -

 

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.

 

The only thing that would cause me concern is the "Completed: read failure" at the bottom. Other than that the drive looks fine. I am guessing that the issue before was a loose or bad cable? Someone smarter than me would need to confirm that, I am just guessing. If it was a cabling issue then it is probably fine to use it but keep an eye on it.

 

On a side note, how are you keeping your drives at 13 degree C Maximum? Does your server live in a refrigerator?

 

EDIT: I lied - see post below...

Pending sector caused the read failure. The drive looks fine.

Oh I lied above!

 

Reported_Uncorrect      0x0032  100  100  000    Old_age  Always      -      235

 

That indicates that 235 sectors are uncorrectable. I would retire the drive...

Now those last two replies put me in a quandary...

Now those last two replies put me in a quandary...

Exactly as it should. The drive is currently fine to use, but that could change very quickly to not fine.

 

All drives will fail, the important bit is predicting when.

That drive is at or quickly approaching 5 years old (42673 power on hours). I wouldn't trust it with my data, but then again it isn't my data and isn't my array, so it's all your call. I just finished replacing all my 2TB ~5 year old drives with newer 4TB drives.