Skip to content
View in the app

A better way to browse. Learn more.

Unraid

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.

seemingly damaged files

Featured Replies

i believe there is a serious problem with damaged files on my unraid server. a parity check reveals 0 errors. i have not changed hardware since the day i built the tower over a year ago. been running unraid 4.5.6 since it was released.

 

about 2 weeks ago, i noticed music starting to skip during playback. this occurrence is not random; it would skip at the same exact time in each song.

 

steps taken to troubleshoot this:

  • i have observed this during playback of dozens of different albums that have never had playback problems in the past, so the problem is not limited to one faulty audio rip.
  • played music from multiple different computers on the same network as the server
  • used different music players on multiple computers
  • replaced network cables and changed routers
  • if i copy a perfectly OK song from my local computer to the server, it has skips once it's on the server. if i copy a song with skips from the server to the local machine, the skips are in the same places.
  • if i do the file transfer using Teracopy, i get CRC errors on most (but not all) of the files when i copy from the local machine to the server. when i use Teracopy to copy from the server to the local machine i get no CRC errors
  • ran two parity checks. both clear

 

can anyone recommend ideas or guess at the specific problem i'm having? these files are clearly damaged.

 

 

I was going to suggest CRC checking the files, but you already did that.  So you definitely have some data corruption.  Have you noticed if the problem is isolated to one particular drive in the server?  If so, run SMART on that drive and post it here.  If not, run SMART on all your drives and post it here.

 

Also, are you running parity checks (the unRAID default) or parity verifies (available through unMenu)?  In the future, you may want to run parity verifies, since then they give you a chance to correct corrupted data using good parity data.  unRAID's default parity check always trusts the data on the data drive (even if it is corrupted, since unRAID has no way of knowing that), and always overwrites/corrects the data on the parity drive (even if it is good, since again unRAID has no way of knowing that).  If that happens it should be reported as a parity check error, though.  I'm surprised you didn't see any errors.

  • Author

Ran a parity verify using unmenu with 0 errors. Here are the smart results. no errors shown for any drive

 

Statistics for /dev/sde 00J7B1_WD-WMATV1470852

smartctl -a -d ata /dev/sde
smartctl version 5.38 [i486-slackware-linux-gnu] Copyright (C) 2002-8 Bruce Allen
Home page is http://smartmontools.sourceforge.net/

=== START OF INFORMATION SECTION ===
Device Model:     WDC WD1001FALS-00J7B1
Serial Number:    WD-WMATV1470852
Firmware Version: 05.00K05
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 Oct  7 19:18:46 2010 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:  (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:          (18600) 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:      ( 214) minutes.
Conveyance self-test routine
recommended polling time:      (   5) minutes.
SCT capabilities:            (0x303f)    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   226   225   021    Pre-fail  Always       -       8666
 4 Start_Stop_Count        0x0032   099   099   000    Old_age   Always       -       1093
 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   087   087   000    Old_age   Always       -       9802
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       -       179
192 Power-Off_Retract_Count 0x0032   200   200   000    Old_age   Always       -       12
193 Load_Cycle_Count        0x0032   200   200   000    Old_age   Always       -       1093
194 Temperature_Celsius     0x0022   114   107   000    Old_age   Always       -       36
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
Num  Test_Description    Status                  Remaining  LifeTime(hours)  LBA_of_first_error
# 1  Extended offline    Completed without error       00%      9802         -
# 2  Short offline       Completed without error       00%      9789         -

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.

 

Statistics for /dev/sdc 07D6B0_WD-WCAU45994517

smartctl -a -d ata /dev/sdc
smartctl version 5.38 [i486-slackware-linux-gnu] Copyright (C) 2002-8 Bruce Allen
Home page is http://smartmontools.sourceforge.net/

=== START OF INFORMATION SECTION ===
Device Model:     WDC WD10EACS-07D6B0
Serial Number:    WD-WCAU45994517
Firmware Version: 01.01A01
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:    Fri Oct  8 05:56:41 2010 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:          (22800) 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:      (   5) minutes.
SCT capabilities:            (0x303f)    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   158   157   021    Pre-fail  Always       -       7075
 4 Start_Stop_Count        0x0032   099   099   000    Old_age   Always       -       1455
 5 Reallocated_Sector_Ct   0x0033   200   200   140    Pre-fail  Always       -       0
 7 Seek_Error_Rate         0x002e   100   253   000    Old_age   Always       -       0
 9 Power_On_Hours          0x0032   087   087   000    Old_age   Always       -       9810
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       -       172
192 Power-Off_Retract_Count 0x0032   200   200   000    Old_age   Always       -       2
193 Load_Cycle_Count        0x0032   200   200   000    Old_age   Always       -       1455
194 Temperature_Celsius     0x0022   121   110   000    Old_age   Always       -       29
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
Num  Test_Description    Status                  Remaining  LifeTime(hours)  LBA_of_first_error
# 1  Extended offline    Completed without error       00%      9803         -
# 2  Short offline       Completed without error       00%      9800         -

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.

 

Statistics for /dev/sdf 00D6B0_WD-WCAU45921192

smartctl -a -d ata /dev/sdf
smartctl version 5.38 [i486-slackware-linux-gnu] Copyright (C) 2002-8 Bruce Allen
Home page is http://smartmontools.sourceforge.net/

=== START OF INFORMATION SECTION ===
Device Model:     WDC WD10EACS-00D6B0
Serial Number:    WD-WCAU45921192
Firmware Version: 01.01A01
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:    Fri Oct  8 15:59:00 2010 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:          (24000) 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:      (   5) minutes.
SCT capabilities:            (0x303f)    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       -       18
 3 Spin_Up_Time            0x0027   159   157   021    Pre-fail  Always       -       7050
 4 Start_Stop_Count        0x0032   099   099   000    Old_age   Always       -       1726
 5 Reallocated_Sector_Ct   0x0033   200   200   140    Pre-fail  Always       -       0
 7 Seek_Error_Rate         0x002e   100   253   000    Old_age   Always       -       0
 9 Power_On_Hours          0x0032   087   087   000    Old_age   Always       -       9817
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       -       172
192 Power-Off_Retract_Count 0x0032   200   200   000    Old_age   Always       -       2
193 Load_Cycle_Count        0x0032   200   200   000    Old_age   Always       -       1726
194 Temperature_Celsius     0x0022   120   110   000    Old_age   Always       -       30
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      -       1

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%      9811         -
# 2  Short offline       Completed without error       00%      9807         -

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.

  • Author

results for all drives show no errors

 

Statistics for /dev/sda ST31000340AS_9QJ0Z3J5

smartctl -a -d ata /dev/sda
smartctl version 5.38 [i486-slackware-linux-gnu] Copyright (C) 2002-8 Bruce Allen
Home page is http://smartmontools.sourceforge.net/

=== START OF INFORMATION SECTION ===
Model Family:     Seagate Barracuda 7200.11
Device Model:     ST31000340AS
Serial Number:    9QJ0Z3J5
Firmware Version: SD15
User Capacity:    1,000,204,886,016 bytes
Device is:        In smartctl database [for details use: -P show]
ATA Version is:   8
ATA Standard is:  ATA-8-ACS revision 4
Local Time is:    Sat Oct  9 08:10:08 2010 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
See vendor-specific Attribute list for marginal Attributes.

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:          ( 634) 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:      (   1) minutes.
Extended self-test routine
recommended polling time:      ( 220) minutes.
Conveyance self-test routine
recommended polling time:      (   2) minutes.
SCT capabilities:            (0x103b)    SCT Status supported.
                   SCT Feature Control supported.
                   SCT Data Table supported.

SMART Attributes Data Structure revision number: 10
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   119   099   006    Pre-fail  Always       -       230438347
 3 Spin_Up_Time            0x0003   091   086   000    Pre-fail  Always       -       0
 4 Start_Stop_Count        0x0032   099   099   020    Old_age   Always       -       1114
 5 Reallocated_Sector_Ct   0x0033   100   100   036    Pre-fail  Always       -       7
 7 Seek_Error_Rate         0x000f   072   060   030    Pre-fail  Always       -       8628240434
 9 Power_On_Hours          0x0032   083   083   000    Old_age   Always       -       15555
10 Spin_Retry_Count        0x0013   100   100   097    Pre-fail  Always       -       4
12 Power_Cycle_Count       0x0032   100   100   020    Old_age   Always       -       240
184 Unknown_Attribute       0x0032   100   100   099    Old_age   Always       -       0
187 Reported_Uncorrect      0x0032   100   100   000    Old_age   Always       -       0
188 Unknown_Attribute       0x0032   100   100   000    Old_age   Always       -       4295032833
189 High_Fly_Writes         0x003a   100   100   000    Old_age   Always       -       0
190 Airflow_Temperature_Cel 0x0022   065   040   045    Old_age   Always   In_the_past 35 (0 43 39 19)
194 Temperature_Celsius     0x0022   035   060   000    Old_age   Always       -       35 (0 16 0 0)
195 Hardware_ECC_Recovered  0x001a   041   024   000    Old_age   Always       -       230438347
197 Current_Pending_Sector  0x0012   100   100   000    Old_age   Always       -       0
198 Offline_Uncorrectable   0x0010   100   100   000    Old_age   Offline      -       0
199 UDMA_CRC_Error_Count    0x003e   200   200   000    Old_age   Always       -       1

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%     15543         -
# 2  Short offline       Completed without error       00%     15539         -
# 3  Short offline       Completed without error       00%      6344         -

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.

 

Statistics for /dev/sdd ST31000340AS_9QJ0QK98

smartctl -a -d ata /dev/sdd
smartctl version 5.38 [i486-slackware-linux-gnu] Copyright (C) 2002-8 Bruce Allen
Home page is http://smartmontools.sourceforge.net/

=== START OF INFORMATION SECTION ===
Model Family:     Seagate Barracuda 7200.11
Device Model:     ST31000340AS
Serial Number:    9QJ0QK98
Firmware Version: SD15
User Capacity:    1,000,204,886,016 bytes
Device is:        In smartctl database [for details use: -P show]
ATA Version is:   8
ATA Standard is:  ATA-8-ACS revision 4
Local Time is:    Sat Oct  9 08:11:10 2010 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
See vendor-specific Attribute list for marginal Attributes.

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:          ( 634) 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:      (   1) minutes.
Extended self-test routine
recommended polling time:      ( 228) minutes.
Conveyance self-test routine
recommended polling time:      (   2) minutes.
SCT capabilities:            (0x103b)    SCT Status supported.
                   SCT Feature Control supported.
                   SCT Data Table supported.

SMART Attributes Data Structure revision number: 10
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   117   099   006    Pre-fail  Always       -       124845540
 3 Spin_Up_Time            0x0003   091   083   000    Pre-fail  Always       -       0
 4 Start_Stop_Count        0x0032   099   099   020    Old_age   Always       -       1328
 5 Reallocated_Sector_Ct   0x0033   100   100   036    Pre-fail  Always       -       0
 7 Seek_Error_Rate         0x000f   064   060   030    Pre-fail  Always       -       51580693893
 9 Power_On_Hours          0x0032   083   083   000    Old_age   Always       -       15512
10 Spin_Retry_Count        0x0013   100   100   097    Pre-fail  Always       -       5
12 Power_Cycle_Count       0x0032   100   037   020    Old_age   Always       -       226
184 Unknown_Attribute       0x0032   100   100   099    Old_age   Always       -       0
187 Reported_Uncorrect      0x0032   100   100   000    Old_age   Always       -       0
188 Unknown_Attribute       0x0032   100   100   000    Old_age   Always       -       4295032833
189 High_Fly_Writes         0x003a   100   100   000    Old_age   Always       -       0
190 Airflow_Temperature_Cel 0x0022   062   036   045    Old_age   Always   In_the_past 38 (0 64 42 19)
194 Temperature_Celsius     0x0022   038   064   000    Old_age   Always       -       38 (0 16 0 0)
195 Hardware_ECC_Recovered  0x001a   035   014   000    Old_age   Always       -       124845540
197 Current_Pending_Sector  0x0012   100   100   000    Old_age   Always       -       0
198 Offline_Uncorrectable   0x0010   100   100   000    Old_age   Offline      -       0
199 UDMA_CRC_Error_Count    0x003e   200   200   000    Old_age   Always       -       1

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%     15506         -
# 2  Short offline       Completed without error       00%     15503         -
# 3  Short offline       Completed without error       00%      6296         -

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.

 

Statistics for /dev/sdb ST3750640AS_5QD00EH1

smartctl -a -d ata /dev/sdb
smartctl version 5.38 [i486-slackware-linux-gnu] Copyright (C) 2002-8 Bruce Allen
Home page is http://smartmontools.sourceforge.net/

=== START OF INFORMATION SECTION ===
Model Family:     Seagate Barracuda 7200.10 family
Device Model:     ST3750640AS
Serial Number:    5QD00EH1
Firmware Version: 3.AAE
User Capacity:    750,156,374,016 bytes
Device is:        In smartctl database [for details use: -P show]
ATA Version is:   7
ATA Standard is:  Exact ATA specification draft version not indicated
Local Time is:    Sat Oct  9 13:28:35 2010 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:          ( 430) seconds.
Offline data collection
capabilities:              (0x5b) SMART execute Offline immediate.
                    Auto Offline data collection on/off support.
                    Suspend Offline collection upon new
                    command.
                    Offline surface scan supported.
                    Self-test supported.
                    No 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:      (   1) minutes.
Extended self-test routine
recommended polling time:      ( 202) minutes.

SMART Attributes Data Structure revision number: 10
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   109   087   006    Pre-fail  Always       -       0
  3 Spin_Up_Time            0x0003   094   092   000    Pre-fail  Always       -       0
  4 Start_Stop_Count        0x0032   099   099   020    Old_age   Always       -       1148
  5 Reallocated_Sector_Ct   0x0033   100   100   036    Pre-fail  Always       -       0
  7 Seek_Error_Rate         0x000f   087   060   030    Pre-fail  Always       -       551464326
  9 Power_On_Hours          0x0032   085   085   000    Old_age   Always       -       13287
10 Spin_Retry_Count        0x0013   100   100   097    Pre-fail  Always       -       0
12 Power_Cycle_Count       0x0032   100   100   020    Old_age   Always       -       349
187 Reported_Uncorrect      0x0032   100   100   000    Old_age   Always       -       0
189 High_Fly_Writes         0x003a   100   100   000    Old_age   Always       -       0
190 Airflow_Temperature_Cel 0x0022   055   051   045    Old_age   Always       -       45 (Lifetime Min/Max 42/48)
194 Temperature_Celsius     0x0022   045   049   000    Old_age   Always       -       45 (0 17 0 0)
195 Hardware_ECC_Recovered  0x001a   067   054   000    Old_age   Always       -       86392206
197 Current_Pending_Sector  0x0012   100   100   000    Old_age   Always       -       0
198 Offline_Uncorrectable   0x0010   100   100   000    Old_age   Offline      -       0
199 UDMA_CRC_Error_Count    0x003e   200   200   000    Old_age   Always       -       0
200 Multi_Zone_Error_Rate   0x0000   100   253   000    Old_age   Offline      -       0
202 TA_Increase_Count       0x0032   100   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%     13285         -
# 2  Short offline       Completed without error       00%     13282         -

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.

  • Author

Does this mean that I don't have corrupted data?

Does this mean that I don't have corrupted data?

No, it means you might have bad memory, or a bad network chipset, or something on the LAN.

 

The "long" tests would not show any evidence of flipped bits in your media files.  It would tell you of un-readable sectors that have been re-allocated.

 

The bad CRC when using Teracopy is an indication of either a single disk that reports differing data when repeatedly addressed, or, a bad network interface, or, perhaps even bad memory. (or bad memory settings of clock speed, timing or voltage)

 

Step 1 if you have not already done it is a memory-test, preferably overnight. (at least have it go through multiple cycles)

Step 2. a test of individual disks using a checksum on a specific known file from the linux command line.

 

You can use

md5sum  /mnt/disk1/path/to/large_file.iso

 

run it multiple times, it should always return the same checksum.  Use a version of md5 checksum on Windows to compare it to the same file there.  Make sure the file is a very large one.  (multi-gigabytes if possible)

 

Joe L.

 

  • 2 weeks later...
  • Author

Thanks Joe. Memtest revealed a million errors. Replaced the RAM today and problem is fixed.

Archived

This topic is now archived and is closed to further replies.

Account

Navigation

Search

Search

Configure browser push notifications

Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.