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help with parity check errors,

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I installed a new 2TB harddrive and rebuilt using the basic Unraid 4.7 menu. It spotted 116 errors when it was done, with all green balls. I checked the parity again but still get 116 errors. My syslog showed errors in UnMenu, and the following is a sample of the red lines:

Aug 20 17:16:49 Tower kernel: res 51/40:8f:f8:5e:0b/00:03:22:00:00/e0 Emask 0x9 (media error)

Aug 20 17:16:49 Tower kernel: ata1.00: error: { UNC }

Aug 20 17:16:49 Tower kernel: end_request: I/O error, dev sda, sector 571170552

Aug 20 17:16:49 Tower kernel: md: disk0 read error
Aug 20 17:16:49 Tower kernel: handle_stripe read error: 571170488/0, count: 1
Aug 20 17:16:49 Tower kernel: md: parity incorrect: 571170488
Aug 20 17:16:49 Tower kernel: md: disk0 read error
Aug 20 17:16:49 Tower kernel: handle_stripe read error: 571170496/0, count: 1
Aug 20 17:16:49 Tower kernel: md: parity incorrect: 571170496
Aug 20 17:16:49 Tower kernel: md: disk0 read error
...
Aug 20 17:16:49 Tower kernel: handle_stripe read error: 571170632/0, count: 1
Aug 20 17:16:49 Tower kernel: md: parity incorrect: 571170632
Aug 20 17:16:49 Tower kernel: md: disk0 read error
Aug 20 17:16:49 Tower kernel: handle_stripe read error: 571170640/0, count: 1
Aug 20 17:16:49 Tower kernel: md: parity incorrect: 571170640
Aug 20 17:16:49 Tower kernel: md: disk0 read error

Aug 20 17:16:49 Tower kernel: handle_stripe read error: 571170648/0, count: 1
Aug 20 17:16:49 Tower kernel: md: disk0 read error
Aug 20 17:16:49 Tower kernel: handle_stripe read error: 571170656/0, count: 1
Aug 20 17:16:49 Tower kernel: md: disk0 read error
...
Aug 20 17:16:49 Tower kernel: md: disk0 read error
Aug 20 17:16:49 Tower kernel: handle_stripe read error: 571171400/0, count: 1
Aug 20 17:16:49 Tower kernel: md: disk0 read error
Aug 20 17:16:49 Tower kernel: handle_stripe read error: 571171408/0, count: 1



Aug 21 11:30:29 Tower kernel: ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0

Aug 21 11:30:29 Tower kernel: res 51/40:87:f8:5e:0b/00:00:22:00:00/e0 Emask 0x9 (media error)

Aug 21 11:30:29 Tower kernel: ata1.00: error: { UNC }

Aug 21 11:30:31 Tower kernel: ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0

Aug 21 11:30:31 Tower kernel: res 51/40:87:f8:5e:0b/00:00:22:00:00/e0 Emask 0x9 (media error)
Aug 21 11:30:31 Tower kernel: ata1.00: error: { UNC }


Aug 21 11:30:31 Tower kernel: md: parity incorrect: 571170488
Aug 21 11:30:31 Tower kernel: md: parity incorrect: 571170496
..
Aug 21 11:30:31 Tower kernel: md: parity incorrect: 571170632
Aug 21 11:30:31 Tower kernel: md: parity incorrect: 571170640

 

 

Below is a smartctl short result on the parity drive:

root@Tower:/boot/smarthistory# smartctl -a -A /dev/sda
smartctl 5.39.1 2010-01-28 r3054 [i486-slackware-linux-gnu] (local build)
Copyright (C) 2002-10 by Bruce Allen, http://smartmontools.sourceforge.net

=== START OF INFORMATION SECTION ===
Device Model:     WDC WD2001FASS-00W2B0
Serial Number:    WD-WMAY00086118
Firmware Version: 01.00101
User Capacity:    2,000,398,934,016 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 Aug 22 04:10:02 2013 Local time zone must be set--see zic
m
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:                 (30180) seconds.
Offline data collection
capabilities:                    (0x7b) SMART execute Offline immediate.
                                        Auto Offline data collection on/off supp
ort.
                                        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:        (   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   064   047   021    Pre-fail  Always       -
       13825
  4 Start_Stop_Count        0x0032   097   097   000    Old_age   Always       -
       3654
  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   065   065   000    Old_age   Always       -
       25918
10 Spin_Retry_Count        0x0032   100   100   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       -
       53
192 Power-Off_Retract_Count 0x0032   200   200   000    Old_age   Always       -
       17
193 Load_Cycle_Count        0x0032   179   179   000    Old_age   Always       -
       65821
194 Temperature_Celsius     0x0022   110   095   000    Old_age   Always       -
       42
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      -
       2
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      -
       3

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%     25918         -
# 2  Short offline       Completed without error       00%     24001         -

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.

 

Below is a smartctl short result on the new drive:

root@Tower:/boot/smarthistory# smartctl -a -A /dev/sdf
smartctl 5.39.1 2010-01-28 r3054 [i486-slackware-linux-gnu] (local build)
Copyright (C) 2002-10 by Bruce Allen, http://smartmontools.sourceforge.net

=== START OF INFORMATION SECTION ===
Device Model:     WDC WD20EFRX-68AX9N0
Serial Number:    WD-WCC300359112
Firmware Version: 80.00A80
User Capacity:    2,000,398,934,016 bytes
Device is:        Not in smartctl database [for details use: -P showall]
ATA Version is:   9
ATA Standard is:  Exact ATA specification draft version not indicated
Local Time is:    Thu Aug 22 04:01:24 2013 Local time zone must be set--see zic
m
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:      (   0) The previous self-test routine completed
                                        without error or no self-test has ever
                                        been run.
Total time to complete Offline
data collection:                 (25980) seconds.
Offline data collection
capabilities:                    (0x7b) SMART execute Offline immediate.
                                        Auto Offline data collection on/off supp
ort.
                                        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:        (   5) minutes.
SCT capabilities:              (0x70bd) 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   100   253   021    Pre-fail  Always       -
       0
  4 Start_Stop_Count        0x0032   100   100   000    Old_age   Always       -
       2
  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       -
       37
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       -
       1
192 Power-Off_Retract_Count 0x0032   200   200   000    Old_age   Always       -
       0
193 Load_Cycle_Count        0x0032   200   200   000    Old_age   Always       -
       1
194 Temperature_Celsius     0x0022   121   118   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
Num  Test_Description    Status                  Remaining  LifeTime(hours)  LBA
_of_first_error
# 1  Short offline       Completed without error       00%        37         -

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.

 

I've attached a full syslog. What looks to be wrong?

 

 

Update:

 

I swapped out the SATA cable for the parity drive, and re-checked parity. It reported 0 error this time, with no error reported in syslog. I haven't determined whether this is a coincidence, but for now I'll assume it was a bad cable unless the errors come back.

syslog-2013-08-22.zip

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