Re: help requested for mdadm grow error

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https://raid.wiki.kernel.org/index.php/Linux_Raid#When_Things_Go_Wrogn

Especially

https://raid.wiki.kernel.org/index.php/Asking_for_help

More will follow but we need this info.

You´re totally right. Sorry for not quoting.

All drives are new.

root@nas:~# smartctl --xall /dev/sda
smartctl 6.6 2016-05-31 r4324 [x86_64-linux-4.9.0-12-amd64] (local build)
Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Device Model:     WDC WD120EFAX-68UNTN0
Serial Number:    8CHM61BE
LU WWN Device Id: 5 000cca 26fd6d13e
Firmware Version: 81.00A81
User Capacity:    12.000.138.625.024 bytes [12,0 TB]
Sector Sizes:     512 bytes logical, 4096 bytes physical
Rotation Rate:    5400 rpm
Form Factor:      3.5 inches
Device is:        Not in smartctl database [for details use: -P showall]
ATA Version is:   ACS-2, ATA8-ACS T13/1699-D revision 4
SATA Version is:  SATA 3.2, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is:    Mon May 25 20:12:40 2020 CEST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
AAM feature is:   Unavailable
APM level is:     254 (maximum performance)
Rd look-ahead is: Enabled
Write cache is:   Enabled
ATA Security is:  Disabled, NOT FROZEN [SEC1]
Wt Cache Reorder: 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:                (   87) 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:        (   2) minutes.
Extended self-test routine
recommended polling time:        (1197) minutes.
SCT capabilities:              (0x003d) 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          FLAGS    VALUE WORST THRESH FAIL RAW_VALUE
  1 Raw_Read_Error_Rate     PO-R--   100   100   016    -    0
  2 Throughput_Performance  --S---   129   129   054    -    104
  3 Spin_Up_Time            POS---   100   100   024    -    0
  4 Start_Stop_Count        -O--C-   100   100   000    -    2
  5 Reallocated_Sector_Ct   PO--CK   100   100   005    -    0
  7 Seek_Error_Rate         -O-R--   100   100   067    -    0
  8 Seek_Time_Performance   --S---   140   140   020    -    15
  9 Power_On_Hours          -O--C-   100   100   000    -    212
 10 Spin_Retry_Count        -O--C-   100   100   060    -    0
 12 Power_Cycle_Count       -O--CK   100   100   000    -    2
 22 Unknown_Attribute       PO---K   100   100   025    -    100
192 Power-Off_Retract_Count -O--CK   100   100   000    -    8
193 Load_Cycle_Count        -O--C-   100   100   000    -    8
194 Temperature_Celsius     -O----   196   196   000    -    33 (Min/Max 22/37)
196 Reallocated_Event_Count -O--CK   100   100   000    -    0
197 Current_Pending_Sector  -O---K   100   100   000    -    0
198 Offline_Uncorrectable   ---R--   100   100   000    -    0
199 UDMA_CRC_Error_Count    -O-R--   200   200   000    -    0
                            ||||||_ K auto-keep
                            |||||__ C event count
                            ||||___ R error rate
                            |||____ S speed/performance
                            ||_____ O updated online
                            |______ P prefailure warning

General Purpose Log Directory Version 1
SMART           Log Directory Version 1 [multi-sector log support]
Address    Access  R/W   Size  Description
0x00       GPL,SL  R/O      1  Log Directory
0x01           SL  R/O      1  Summary SMART error log
0x02           SL  R/O      1  Comprehensive SMART error log
0x03       GPL     R/O      1  Ext. Comprehensive SMART error log
0x04       GPL     R/O    256  Device Statistics log
0x04       SL      R/O    255  Device Statistics log
0x06           SL  R/O      1  SMART self-test log
0x07       GPL     R/O      1  Extended self-test log
0x08       GPL     R/O      2  Power Conditions log
0x09           SL  R/W      1  Selective self-test log
0x0c       GPL     R/O   5501  Pending Defects log
0x10       GPL     R/O      1  SATA NCQ Queued Error log
0x11       GPL     R/O      1  SATA Phy Event Counters log
0x12       GPL     R/O      1  SATA NCQ NON-DATA log
0x13       GPL     R/O      1  SATA NCQ Send and Receive log
0x15       GPL     R/W      1  SATA Rebuild Assist log
0x21       GPL     R/O      1  Write stream error log
0x22       GPL     R/O      1  Read stream error log
0x24       GPL     R/O    256  Current Device Internal Status Data log
0x25       GPL     R/O    256  Saved Device Internal Status Data log
0x30       GPL,SL  R/O      9  IDENTIFY DEVICE data log
0x80-0x9f  GPL,SL  R/W     16  Host vendor specific log
0xe0       GPL,SL  R/W      1  SCT Command/Status
0xe1       GPL,SL  R/W      1  SCT Data Transfer

SMART Extended Comprehensive Error Log Version: 1 (1 sectors)
No Errors Logged

SMART Extended Self-test Log Version: 1 (1 sectors)
No self-tests have been logged.  [To run self-tests, use: smartctl -t]

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.

SCT Status Version:                  3
SCT Version (vendor specific):       256 (0x0100)
SCT Support Level:                   0
Device State:                        Active (0)
Current Temperature:                    33 Celsius
Power Cycle Min/Max Temperature:     26/37 Celsius
Lifetime    Min/Max Temperature:     22/37 Celsius
Under/Over Temperature Limit Count:   0/0

SCT Temperature History Version:     2
Temperature Sampling Period:         1 minute
Temperature Logging Interval:        1 minute
Min/Max recommended Temperature:      0/65 Celsius
Min/Max Temperature Limit:           -40/70 Celsius
Temperature History Size (Index):    128 (70)

Index    Estimated Time   Temperature Celsius
  71    2020-05-25 18:05    35  ****************
 ...    ..(  9 skipped).    ..  ****************
  81    2020-05-25 18:15    35  ****************
  82    2020-05-25 18:16    34  ***************
  83    2020-05-25 18:17    34  ***************
  84    2020-05-25 18:18    34  ***************
  85    2020-05-25 18:19    35  ****************
 ...    ..(  9 skipped).    ..  ****************
  95    2020-05-25 18:29    35  ****************
  96    2020-05-25 18:30    34  ***************
 ...    ..( 80 skipped).    ..  ***************
  49    2020-05-25 19:51    34  ***************
  50    2020-05-25 19:52    33  **************
 ...    ..( 18 skipped).    ..  **************
  69    2020-05-25 20:11    33  **************
  70    2020-05-25 20:12    35  ****************

SCT Error Recovery Control:
           Read:     70 (7,0 seconds)
          Write:     70 (7,0 seconds)

Device Statistics (GP/SMART Log 0x04) not supported

SATA Phy Event Counters (GP Log 0x11)
ID      Size     Value  Description
0x0001  2            0  Command failed due to ICRC error
0x0002  2            0  R_ERR response for data FIS
0x0003  2            0  R_ERR response for device-to-host data FIS
0x0004  2            0  R_ERR response for host-to-device data FIS
0x0005  2            0  R_ERR response for non-data FIS
0x0006  2            0  R_ERR response for device-to-host non-data FIS
0x0007  2            0  R_ERR response for host-to-device non-data FIS
0x0008  2            0  Device-to-host non-data FIS retries
0x0009  2           53  Transition from drive PhyRdy to drive PhyNRdy
0x000a  2           48  Device-to-host register FISes sent due to a COMRESET
0x000b  2            0  CRC errors within host-to-device FIS
0x000d  2            0  Non-CRC errors within host-to-device FIS

========================================================

root@nas:~# smartctl --xall /dev/sdb
smartctl 6.6 2016-05-31 r4324 [x86_64-linux-4.9.0-12-amd64] (local build)
Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Device Model:     WDC WD120EFAX-68UNTN0
Serial Number:    8CHUDDLE
LU WWN Device Id: 5 000cca 26fd9a35a
Firmware Version: 81.00A81
User Capacity:    12.000.138.625.024 bytes [12,0 TB]
Sector Sizes:     512 bytes logical, 4096 bytes physical
Rotation Rate:    5400 rpm
Form Factor:      3.5 inches
Device is:        Not in smartctl database [for details use: -P showall]
ATA Version is:   ACS-2, ATA8-ACS T13/1699-D revision 4
SATA Version is:  SATA 3.2, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is:    Mon May 25 20:13:47 2020 CEST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
AAM feature is:   Unavailable
APM level is:     254 (maximum performance)
Rd look-ahead is: Enabled
Write cache is:   Enabled
ATA Security is:  Disabled, NOT FROZEN [SEC1]
Wt Cache Reorder: 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:                (   87) 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:        (   2) minutes.
Extended self-test routine
recommended polling time:        (1322) minutes.
SCT capabilities:              (0x003d) 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          FLAGS    VALUE WORST THRESH FAIL RAW_VALUE
  1 Raw_Read_Error_Rate     PO-R--   100   100   016    -    0
  2 Throughput_Performance  --S---   129   129   054    -    104
  3 Spin_Up_Time            POS---   100   100   024    -    0
  4 Start_Stop_Count        -O--C-   100   100   000    -    2
  5 Reallocated_Sector_Ct   PO--CK   100   100   005    -    0
  7 Seek_Error_Rate         -O-R--   100   100   067    -    0
  8 Seek_Time_Performance   --S---   128   128   020    -    18
  9 Power_On_Hours          -O--C-   100   100   000    -    212
 10 Spin_Retry_Count        -O--C-   100   100   060    -    0
 12 Power_Cycle_Count       -O--CK   100   100   000    -    2
 22 Unknown_Attribute       PO---K   100   100   025    -    100
192 Power-Off_Retract_Count -O--CK   100   100   000    -    4
193 Load_Cycle_Count        -O--C-   100   100   000    -    4
194 Temperature_Celsius     -O----   196   196   000    -    33 (Min/Max 22/37)
196 Reallocated_Event_Count -O--CK   100   100   000    -    0
197 Current_Pending_Sector  -O---K   100   100   000    -    0
198 Offline_Uncorrectable   ---R--   100   100   000    -    0
199 UDMA_CRC_Error_Count    -O-R--   200   200   000    -    0
                            ||||||_ K auto-keep
                            |||||__ C event count
                            ||||___ R error rate
                            |||____ S speed/performance
                            ||_____ O updated online
                            |______ P prefailure warning

General Purpose Log Directory Version 1
SMART           Log Directory Version 1 [multi-sector log support]
Address    Access  R/W   Size  Description
0x00       GPL,SL  R/O      1  Log Directory
0x01           SL  R/O      1  Summary SMART error log
0x02           SL  R/O      1  Comprehensive SMART error log
0x03       GPL     R/O      1  Ext. Comprehensive SMART error log
0x04       GPL     R/O    256  Device Statistics log
0x04       SL      R/O    255  Device Statistics log
0x06           SL  R/O      1  SMART self-test log
0x07       GPL     R/O      1  Extended self-test log
0x08       GPL     R/O      2  Power Conditions log
0x09           SL  R/W      1  Selective self-test log
0x0c       GPL     R/O   5501  Pending Defects log
0x10       GPL     R/O      1  SATA NCQ Queued Error log
0x11       GPL     R/O      1  SATA Phy Event Counters log
0x12       GPL     R/O      1  SATA NCQ NON-DATA log
0x13       GPL     R/O      1  SATA NCQ Send and Receive log
0x15       GPL     R/W      1  SATA Rebuild Assist log
0x21       GPL     R/O      1  Write stream error log
0x22       GPL     R/O      1  Read stream error log
0x24       GPL     R/O    256  Current Device Internal Status Data log
0x25       GPL     R/O    256  Saved Device Internal Status Data log
0x30       GPL,SL  R/O      9  IDENTIFY DEVICE data log
0x80-0x9f  GPL,SL  R/W     16  Host vendor specific log
0xe0       GPL,SL  R/W      1  SCT Command/Status
0xe1       GPL,SL  R/W      1  SCT Data Transfer

SMART Extended Comprehensive Error Log Version: 1 (1 sectors)
No Errors Logged

SMART Extended Self-test Log Version: 1 (1 sectors)
No self-tests have been logged.  [To run self-tests, use: smartctl -t]

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.

SCT Status Version:                  3
SCT Version (vendor specific):       256 (0x0100)
SCT Support Level:                   0
Device State:                        Active (0)
Current Temperature:                    33 Celsius
Power Cycle Min/Max Temperature:     26/37 Celsius
Lifetime    Min/Max Temperature:     22/37 Celsius
Under/Over Temperature Limit Count:   0/0

SCT Temperature History Version:     2
Temperature Sampling Period:         1 minute
Temperature Logging Interval:        1 minute
Min/Max recommended Temperature:      0/65 Celsius
Min/Max Temperature Limit:           -40/70 Celsius
Temperature History Size (Index):    128 (62)

Index    Estimated Time   Temperature Celsius
  63    2020-05-25 18:06    35  ****************
 ...    ..( 26 skipped).    ..  ****************
  90    2020-05-25 18:33    35  ****************
  91    2020-05-25 18:34    34  ***************
  92    2020-05-25 18:35    34  ***************
  93    2020-05-25 18:36    34  ***************
  94    2020-05-25 18:37    35  ****************
 ...    ..(  9 skipped).    ..  ****************
 104    2020-05-25 18:47    35  ****************
 105    2020-05-25 18:48    34  ***************
 ...    ..( 80 skipped).    ..  ***************
  58    2020-05-25 20:09    34  ***************
  59    2020-05-25 20:10    33  **************
  60    2020-05-25 20:11    33  **************
  61    2020-05-25 20:12    33  **************
  62    2020-05-25 20:13    35  ****************

SCT Error Recovery Control:
           Read:     70 (7,0 seconds)
          Write:     70 (7,0 seconds)

Device Statistics (GP/SMART Log 0x04) not supported

SATA Phy Event Counters (GP Log 0x11)
ID      Size     Value  Description
0x0001  2            0  Command failed due to ICRC error
0x0002  2            0  R_ERR response for data FIS
0x0003  2            0  R_ERR response for device-to-host data FIS
0x0004  2            0  R_ERR response for host-to-device data FIS
0x0005  2            0  R_ERR response for non-data FIS
0x0006  2            0  R_ERR response for device-to-host non-data FIS
0x0007  2            0  R_ERR response for host-to-device non-data FIS
0x0008  2            0  Device-to-host non-data FIS retries
0x0009  2        12004  Transition from drive PhyRdy to drive PhyNRdy
0x000a  2        12005  Device-to-host register FISes sent due to a COMRESET
0x000b  2            0  CRC errors within host-to-device FIS
0x000d  2            0  Non-CRC errors within host-to-device FIS

================================================

root@nas:~# smartctl --xall /dev/sdc
smartctl 6.6 2016-05-31 r4324 [x86_64-linux-4.9.0-12-amd64] (local build)
Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Device Model:     WDC WD120EFAX-68UNTN0
Serial Number:    8CJMXNDE
LU WWN Device Id: 5 000cca 26fe53da3
Firmware Version: 81.00A81
User Capacity:    12.000.138.625.024 bytes [12,0 TB]
Sector Sizes:     512 bytes logical, 4096 bytes physical
Rotation Rate:    5400 rpm
Form Factor:      3.5 inches
Device is:        Not in smartctl database [for details use: -P showall]
ATA Version is:   ACS-2, ATA8-ACS T13/1699-D revision 4
SATA Version is:  SATA 3.2, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is:    Mon May 25 20:15:17 2020 CEST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
AAM feature is:   Unavailable
APM level is:     254 (maximum performance)
Rd look-ahead is: Enabled
Write cache is:   Enabled
ATA Security is:  Disabled, NOT FROZEN [SEC1]
Wt Cache Reorder: 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:                (   87) 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:        (   2) minutes.
Extended self-test routine
recommended polling time:        (1260) minutes.
SCT capabilities:              (0x003d) 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          FLAGS    VALUE WORST THRESH FAIL RAW_VALUE
  1 Raw_Read_Error_Rate     PO-R--   100   100   016    -    0
  2 Throughput_Performance  --S---   127   127   054    -    112
  3 Spin_Up_Time            POS---   100   100   024    -    0
  4 Start_Stop_Count        -O--C-   100   100   000    -    2
  5 Reallocated_Sector_Ct   PO--CK   100   100   005    -    0
  7 Seek_Error_Rate         -O-R--   100   100   067    -    0
  8 Seek_Time_Performance   --S---   140   140   020    -    15
  9 Power_On_Hours          -O--C-   100   100   000    -    212
 10 Spin_Retry_Count        -O--C-   100   100   060    -    0
 12 Power_Cycle_Count       -O--CK   100   100   000    -    2
 22 Unknown_Attribute       PO---K   100   100   025    -    100
192 Power-Off_Retract_Count -O--CK   100   100   000    -    7
193 Load_Cycle_Count        -O--C-   100   100   000    -    7
194 Temperature_Celsius     -O----   196   196   000    -    33 (Min/Max 23/37)
196 Reallocated_Event_Count -O--CK   100   100   000    -    0
197 Current_Pending_Sector  -O---K   100   100   000    -    0
198 Offline_Uncorrectable   ---R--   100   100   000    -    0
199 UDMA_CRC_Error_Count    -O-R--   200   200   000    -    0
                            ||||||_ K auto-keep
                            |||||__ C event count
                            ||||___ R error rate
                            |||____ S speed/performance
                            ||_____ O updated online
                            |______ P prefailure warning

General Purpose Log Directory Version 1
SMART           Log Directory Version 1 [multi-sector log support]
Address    Access  R/W   Size  Description
0x00       GPL,SL  R/O      1  Log Directory
0x01           SL  R/O      1  Summary SMART error log
0x02           SL  R/O      1  Comprehensive SMART error log
0x03       GPL     R/O      1  Ext. Comprehensive SMART error log
0x04       GPL     R/O    256  Device Statistics log
0x04       SL      R/O    255  Device Statistics log
0x06           SL  R/O      1  SMART self-test log
0x07       GPL     R/O      1  Extended self-test log
0x08       GPL     R/O      2  Power Conditions log
0x09           SL  R/W      1  Selective self-test log
0x0c       GPL     R/O   5501  Pending Defects log
0x10       GPL     R/O      1  SATA NCQ Queued Error log
0x11       GPL     R/O      1  SATA Phy Event Counters log
0x12       GPL     R/O      1  SATA NCQ NON-DATA log
0x13       GPL     R/O      1  SATA NCQ Send and Receive log
0x15       GPL     R/W      1  SATA Rebuild Assist log
0x21       GPL     R/O      1  Write stream error log
0x22       GPL     R/O      1  Read stream error log
0x24       GPL     R/O    256  Current Device Internal Status Data log
0x25       GPL     R/O    256  Saved Device Internal Status Data log
0x30       GPL,SL  R/O      9  IDENTIFY DEVICE data log
0x80-0x9f  GPL,SL  R/W     16  Host vendor specific log
0xe0       GPL,SL  R/W      1  SCT Command/Status
0xe1       GPL,SL  R/W      1  SCT Data Transfer

SMART Extended Comprehensive Error Log Version: 1 (1 sectors)
No Errors Logged

SMART Extended Self-test Log Version: 1 (1 sectors)
No self-tests have been logged.  [To run self-tests, use: smartctl -t]

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.

SCT Status Version:                  3
SCT Version (vendor specific):       256 (0x0100)
SCT Support Level:                   0
Device State:                        Active (0)
Current Temperature:                    33 Celsius
Power Cycle Min/Max Temperature:     26/37 Celsius
Lifetime    Min/Max Temperature:     23/37 Celsius
Under/Over Temperature Limit Count:   0/0

SCT Temperature History Version:     2
Temperature Sampling Period:         1 minute
Temperature Logging Interval:        1 minute
Min/Max recommended Temperature:      0/65 Celsius
Min/Max Temperature Limit:           -40/70 Celsius
Temperature History Size (Index):    128 (54)

Index    Estimated Time   Temperature Celsius
  55    2020-05-25 18:08    35  ****************
 ...    ..( 22 skipped).    ..  ****************
  78    2020-05-25 18:31    35  ****************
  79    2020-05-25 18:32    34  ***************
 ...    ..(  5 skipped).    ..  ***************
  85    2020-05-25 18:38    34  ***************
  86    2020-05-25 18:39    35  ****************
 ...    ..(  5 skipped).    ..  ****************
  92    2020-05-25 18:45    35  ****************
  93    2020-05-25 18:46    34  ***************
 ...    ..( 81 skipped).    ..  ***************
  47    2020-05-25 20:08    34  ***************
  48    2020-05-25 20:09    33  **************
 ...    ..(  4 skipped).    ..  **************
  53    2020-05-25 20:14    33  **************
  54    2020-05-25 20:15    35  ****************

SCT Error Recovery Control:
           Read:     70 (7,0 seconds)
          Write:     70 (7,0 seconds)

Device Statistics (GP/SMART Log 0x04) not supported

SATA Phy Event Counters (GP Log 0x11)
ID      Size     Value  Description
0x0001  2            0  Command failed due to ICRC error
0x0002  2            0  R_ERR response for data FIS
0x0003  2            0  R_ERR response for device-to-host data FIS
0x0004  2            0  R_ERR response for host-to-device data FIS
0x0005  2            0  R_ERR response for non-data FIS
0x0006  2            0  R_ERR response for device-to-host non-data FIS
0x0007  2            0  R_ERR response for host-to-device non-data FIS
0x0008  2            0  Device-to-host non-data FIS retries
0x0009  2           25  Transition from drive PhyRdy to drive PhyNRdy
0x000a  2           26  Device-to-host register FISes sent due to a COMRESET
0x000b  2            0  CRC errors within host-to-device FIS
0x000d  2            0  Non-CRC errors within host-to-device FIS

===============================================

root@nas:~# smartctl --xall /dev/sdd
smartctl 6.6 2016-05-31 r4324 [x86_64-linux-4.9.0-12-amd64] (local build)
Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Device Model:     WDC WD120EFAX-68UNTN0
Serial Number:    8CJNZTLE
LU WWN Device Id: 5 000cca 26fe5ba06
Firmware Version: 81.00A81
User Capacity:    12.000.138.625.024 bytes [12,0 TB]
Sector Sizes:     512 bytes logical, 4096 bytes physical
Rotation Rate:    5400 rpm
Form Factor:      3.5 inches
Device is:        Not in smartctl database [for details use: -P showall]
ATA Version is:   ACS-2, ATA8-ACS T13/1699-D revision 4
SATA Version is:  SATA 3.2, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is:    Mon May 25 20:16:28 2020 CEST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
AAM feature is:   Unavailable
APM level is:     254 (maximum performance)
Rd look-ahead is: Enabled
Write cache is:   Enabled
ATA Security is:  Disabled, NOT FROZEN [SEC1]
Wt Cache Reorder: 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:                (   87) 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:        (   2) minutes.
Extended self-test routine
recommended polling time:        (1333) minutes.
SCT capabilities:              (0x003d) 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          FLAGS    VALUE WORST THRESH FAIL RAW_VALUE
  1 Raw_Read_Error_Rate     PO-R--   100   100   016    -    0
  2 Throughput_Performance  --S---   127   127   054    -    112
  3 Spin_Up_Time            POS---   100   100   024    -    0
  4 Start_Stop_Count        -O--C-   100   100   000    -    2
  5 Reallocated_Sector_Ct   PO--CK   100   100   005    -    0
  7 Seek_Error_Rate         -O-R--   100   100   067    -    0
  8 Seek_Time_Performance   --S---   140   140   020    -    15
  9 Power_On_Hours          -O--C-   100   100   000    -    212
 10 Spin_Retry_Count        -O--C-   100   100   060    -    0
 12 Power_Cycle_Count       -O--CK   100   100   000    -    2
 22 Unknown_Attribute       PO---K   100   100   025    -    100
192 Power-Off_Retract_Count -O--CK   100   100   000    -    10
193 Load_Cycle_Count        -O--C-   100   100   000    -    10
194 Temperature_Celsius     -O----   196   196   000    -    33 (Min/Max 22/37)
196 Reallocated_Event_Count -O--CK   100   100   000    -    0
197 Current_Pending_Sector  -O---K   100   100   000    -    0
198 Offline_Uncorrectable   ---R--   100   100   000    -    0
199 UDMA_CRC_Error_Count    -O-R--   200   200   000    -    0
                            ||||||_ K auto-keep
                            |||||__ C event count
                            ||||___ R error rate
                            |||____ S speed/performance
                            ||_____ O updated online
                            |______ P prefailure warning

General Purpose Log Directory Version 1
SMART           Log Directory Version 1 [multi-sector log support]
Address    Access  R/W   Size  Description
0x00       GPL,SL  R/O      1  Log Directory
0x01           SL  R/O      1  Summary SMART error log
0x02           SL  R/O      1  Comprehensive SMART error log
0x03       GPL     R/O      1  Ext. Comprehensive SMART error log
0x04       GPL     R/O    256  Device Statistics log
0x04       SL      R/O    255  Device Statistics log
0x06           SL  R/O      1  SMART self-test log
0x07       GPL     R/O      1  Extended self-test log
0x08       GPL     R/O      2  Power Conditions log
0x09           SL  R/W      1  Selective self-test log
0x0c       GPL     R/O   5501  Pending Defects log
0x10       GPL     R/O      1  SATA NCQ Queued Error log
0x11       GPL     R/O      1  SATA Phy Event Counters log
0x12       GPL     R/O      1  SATA NCQ NON-DATA log
0x13       GPL     R/O      1  SATA NCQ Send and Receive log
0x15       GPL     R/W      1  SATA Rebuild Assist log
0x21       GPL     R/O      1  Write stream error log
0x22       GPL     R/O      1  Read stream error log
0x24       GPL     R/O    256  Current Device Internal Status Data log
0x25       GPL     R/O    256  Saved Device Internal Status Data log
0x30       GPL,SL  R/O      9  IDENTIFY DEVICE data log
0x80-0x9f  GPL,SL  R/W     16  Host vendor specific log
0xe0       GPL,SL  R/W      1  SCT Command/Status
0xe1       GPL,SL  R/W      1  SCT Data Transfer

SMART Extended Comprehensive Error Log Version: 1 (1 sectors)
No Errors Logged

SMART Extended Self-test Log Version: 1 (1 sectors)
No self-tests have been logged.  [To run self-tests, use: smartctl -t]

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.

SCT Status Version:                  3
SCT Version (vendor specific):       256 (0x0100)
SCT Support Level:                   0
Device State:                        Active (0)
Current Temperature:                    33 Celsius
Power Cycle Min/Max Temperature:     25/37 Celsius
Lifetime    Min/Max Temperature:     22/37 Celsius
Under/Over Temperature Limit Count:   0/0

SCT Temperature History Version:     2
Temperature Sampling Period:         1 minute
Temperature Logging Interval:        1 minute
Min/Max recommended Temperature:      0/65 Celsius
Min/Max Temperature Limit:           -40/70 Celsius
Temperature History Size (Index):    128 (1)

Index    Estimated Time   Temperature Celsius
   2    2020-05-25 18:09    34  ***************
   3    2020-05-25 18:10    34  ***************
   4    2020-05-25 18:11    34  ***************
   5    2020-05-25 18:12    35  ****************
 ...    ..(  2 skipped).    ..  ****************
   8    2020-05-25 18:15    35  ****************
   9    2020-05-25 18:16    34  ***************
 ...    ..( 48 skipped).    ..  ***************
  58    2020-05-25 19:05    34  ***************
  59    2020-05-25 19:06    33  **************
 ...    ..(  4 skipped).    ..  **************
  64    2020-05-25 19:11    33  **************
  65    2020-05-25 19:12    34  ***************
 ...    ..(  7 skipped).    ..  ***************
  73    2020-05-25 19:20    34  ***************
  74    2020-05-25 19:21    33  **************
 ...    ..(  6 skipped).    ..  **************
  81    2020-05-25 19:28    33  **************
  82    2020-05-25 19:29    34  ***************
 ...    ..(  6 skipped).    ..  ***************
  89    2020-05-25 19:36    34  ***************
  90    2020-05-25 19:37    33  **************
 ...    ..(  8 skipped).    ..  **************
  99    2020-05-25 19:46    33  **************
 100    2020-05-25 19:47    34  ***************
 101    2020-05-25 19:48    34  ***************
 102    2020-05-25 19:49    33  **************
 103    2020-05-25 19:50    34  ***************
 104    2020-05-25 19:51    33  **************
 ...    ..( 23 skipped).    ..  **************
   0    2020-05-25 20:15    33  **************
   1    2020-05-25 20:16    34  ***************

SCT Error Recovery Control:
           Read:     70 (7,0 seconds)
          Write:     70 (7,0 seconds)

Device Statistics (GP/SMART Log 0x04) not supported

SATA Phy Event Counters (GP Log 0x11)
ID      Size     Value  Description
0x0001  2            0  Command failed due to ICRC error
0x0002  2            0  R_ERR response for data FIS
0x0003  2            0  R_ERR response for device-to-host data FIS
0x0004  2            0  R_ERR response for host-to-device data FIS
0x0005  2            0  R_ERR response for non-data FIS
0x0006  2            0  R_ERR response for device-to-host non-data FIS
0x0007  2            0  R_ERR response for host-to-device non-data FIS
0x0008  2            0  Device-to-host non-data FIS retries
0x0009  2           13  Transition from drive PhyRdy to drive PhyNRdy
0x000a  2           14  Device-to-host register FISes sent due to a COMRESET
0x000b  2            0  CRC errors within host-to-device FIS
0x000d  2            0  Non-CRC errors within host-to-device FIS

=============================================

root@nas:~# smartctl --xall /dev/sde
smartctl 6.6 2016-05-31 r4324 [x86_64-linux-4.9.0-12-amd64] (local build)
Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Device Model:     WDC WD120EFAX-68UNTN0
Serial Number:    8CHU2XRE
LU WWN Device Id: 5 000cca 26fd97fc4
Firmware Version: 81.00A81
User Capacity:    12.000.138.625.024 bytes [12,0 TB]
Sector Sizes:     512 bytes logical, 4096 bytes physical
Rotation Rate:    5400 rpm
Form Factor:      3.5 inches
Device is:        Not in smartctl database [for details use: -P showall]
ATA Version is:   ACS-2, ATA8-ACS T13/1699-D revision 4
SATA Version is:  SATA 3.2, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is:    Mon May 25 20:17:07 2020 CEST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
AAM feature is:   Unavailable
APM level is:     254 (maximum performance)
Rd look-ahead is: Enabled
Write cache is:   Enabled
ATA Security is:  Disabled, NOT FROZEN [SEC1]
Wt Cache Reorder: 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:                (   87) 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:        (   2) minutes.
Extended self-test routine
recommended polling time:        (1265) minutes.
SCT capabilities:              (0x003d) 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          FLAGS    VALUE WORST THRESH FAIL RAW_VALUE
  1 Raw_Read_Error_Rate     PO-R--   100   100   016    -    0
  2 Throughput_Performance  --S---   127   127   054    -    111
  3 Spin_Up_Time            POS---   100   100   024    -    0
  4 Start_Stop_Count        -O--C-   100   100   000    -    2
  5 Reallocated_Sector_Ct   PO--CK   100   100   005    -    0
  7 Seek_Error_Rate         -O-R--   100   100   067    -    0
  8 Seek_Time_Performance   --S---   140   140   020    -    15
  9 Power_On_Hours          -O--C-   100   100   000    -    265
 10 Spin_Retry_Count        -O--C-   100   100   060    -    0
 12 Power_Cycle_Count       -O--CK   100   100   000    -    2
 22 Unknown_Attribute       PO---K   100   100   025    -    100
192 Power-Off_Retract_Count -O--CK   100   100   000    -    12
193 Load_Cycle_Count        -O--C-   100   100   000    -    12
194 Temperature_Celsius     -O----   196   196   000    -    33 (Min/Max 24/37)
196 Reallocated_Event_Count -O--CK   100   100   000    -    0
197 Current_Pending_Sector  -O---K   100   100   000    -    0
198 Offline_Uncorrectable   ---R--   100   100   000    -    0
199 UDMA_CRC_Error_Count    -O-R--   200   200   000    -    0
                            ||||||_ K auto-keep
                            |||||__ C event count
                            ||||___ R error rate
                            |||____ S speed/performance
                            ||_____ O updated online
                            |______ P prefailure warning

General Purpose Log Directory Version 1
SMART           Log Directory Version 1 [multi-sector log support]
Address    Access  R/W   Size  Description
0x00       GPL,SL  R/O      1  Log Directory
0x01           SL  R/O      1  Summary SMART error log
0x02           SL  R/O      1  Comprehensive SMART error log
0x03       GPL     R/O      1  Ext. Comprehensive SMART error log
0x04       GPL     R/O    256  Device Statistics log
0x04       SL      R/O    255  Device Statistics log
0x06           SL  R/O      1  SMART self-test log
0x07       GPL     R/O      1  Extended self-test log
0x08       GPL     R/O      2  Power Conditions log
0x09           SL  R/W      1  Selective self-test log
0x0c       GPL     R/O   5501  Pending Defects log
0x10       GPL     R/O      1  SATA NCQ Queued Error log
0x11       GPL     R/O      1  SATA Phy Event Counters log
0x12       GPL     R/O      1  SATA NCQ NON-DATA log
0x13       GPL     R/O      1  SATA NCQ Send and Receive log
0x15       GPL     R/W      1  SATA Rebuild Assist log
0x21       GPL     R/O      1  Write stream error log
0x22       GPL     R/O      1  Read stream error log
0x24       GPL     R/O    256  Current Device Internal Status Data log
0x25       GPL     R/O    256  Saved Device Internal Status Data log
0x30       GPL,SL  R/O      9  IDENTIFY DEVICE data log
0x80-0x9f  GPL,SL  R/W     16  Host vendor specific log
0xe0       GPL,SL  R/W      1  SCT Command/Status
0xe1       GPL,SL  R/W      1  SCT Data Transfer

SMART Extended Comprehensive Error Log Version: 1 (1 sectors)
No Errors Logged

SMART Extended Self-test Log Version: 1 (1 sectors)
No self-tests have been logged.  [To run self-tests, use: smartctl -t]

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.

SCT Status Version:                  3
SCT Version (vendor specific):       256 (0x0100)
SCT Support Level:                   0
Device State:                        Active (0)
Current Temperature:                    33 Celsius
Power Cycle Min/Max Temperature:     25/37 Celsius
Lifetime    Min/Max Temperature:     24/37 Celsius
Under/Over Temperature Limit Count:   0/0

SCT Temperature History Version:     2
Temperature Sampling Period:         1 minute
Temperature Logging Interval:        1 minute
Min/Max recommended Temperature:      0/65 Celsius
Min/Max Temperature Limit:           -40/70 Celsius
Temperature History Size (Index):    128 (76)

Index    Estimated Time   Temperature Celsius
  77    2020-05-25 18:10    35  ****************
  78    2020-05-25 18:11    34  ***************
 ...    ..(  2 skipped).    ..  ***************
  81    2020-05-25 18:14    34  ***************
  82    2020-05-25 18:15    35  ****************
 ...    ..(  8 skipped).    ..  ****************
  91    2020-05-25 18:24    35  ****************
  92    2020-05-25 18:25    34  ***************
 ...    ..( 63 skipped).    ..  ***************
  28    2020-05-25 19:29    34  ***************
  29    2020-05-25 19:30    33  **************
 ...    ..(  2 skipped).    ..  **************
  32    2020-05-25 19:33    33  **************
  33    2020-05-25 19:34    34  ***************
 ...    ..(  9 skipped).    ..  ***************
  43    2020-05-25 19:44    34  ***************
  44    2020-05-25 19:45    33  **************
 ...    ..(  7 skipped).    ..  **************
  52    2020-05-25 19:53    33  **************
  53    2020-05-25 19:54    34  ***************
 ...    ..(  4 skipped).    ..  ***************
  58    2020-05-25 19:59    34  ***************
  59    2020-05-25 20:00    33  **************
 ...    ..( 15 skipped).    ..  **************
  75    2020-05-25 20:16    33  **************
  76    2020-05-25 20:17    35  ****************

SCT Error Recovery Control:
           Read:     70 (7,0 seconds)
          Write:     70 (7,0 seconds)

Device Statistics (GP/SMART Log 0x04) not supported

SATA Phy Event Counters (GP Log 0x11)
ID      Size     Value  Description
0x0001  2            0  Command failed due to ICRC error
0x0002  2            0  R_ERR response for data FIS
0x0003  2            0  R_ERR response for device-to-host data FIS
0x0004  2            0  R_ERR response for host-to-device data FIS
0x0005  2            0  R_ERR response for non-data FIS
0x0006  2            0  R_ERR response for device-to-host non-data FIS
0x0007  2            0  R_ERR response for host-to-device non-data FIS
0x0008  2            0  Device-to-host non-data FIS retries
0x0009  2           13  Transition from drive PhyRdy to drive PhyNRdy
0x000a  2           14  Device-to-host register FISes sent due to a COMRESET
0x000b  2            0  CRC errors within host-to-device FIS
0x000d  2            0  Non-CRC errors within host-to-device FIS

==========================================


Last one, I tried is:


root@nas:~# mdadm -Av --invalid-backup --backup-file=/tmp/bu.bak --update=resync /dev/md0 /dev/sda1 /dev/sdb1 /dev/sdc1 /dev/sdd1 /dev/sde1
mdadm: looking for devices for /dev/md0
mdadm: /dev/sda1 is identified as a member of /dev/md0, slot 0.
mdadm: /dev/sdb1 is identified as a member of /dev/md0, slot 1.
mdadm: /dev/sdc1 is identified as a member of /dev/md0, slot 2.
mdadm: /dev/sdd1 is identified as a member of /dev/md0, slot 3.
mdadm: /dev/sde1 is identified as a member of /dev/md0, slot 4.
mdadm: /dev/md0 has an active reshape - checking if critical section needs to be restored
mdadm: Cannot read from /tmp/bu.bak
mdadm: No backup metadata on device-4
mdadm: Failed to find backup of critical section
mdadm: continuing without restoring backup
mdadm: added /dev/sdb1 to /dev/md0 as 1
mdadm: added /dev/sdc1 to /dev/md0 as 2
mdadm: added /dev/sdd1 to /dev/md0 as 3
mdadm: added /dev/sde1 to /dev/md0 as 4
mdadm: added /dev/sda1 to /dev/md0 as 0
mdadm: failed to RUN_ARRAY /dev/md0: Invalid argument
root@nas:~# mdadm -D /dev/md0
/dev/md0:
        Version : 1.2
     Raid Level : raid0
  Total Devices : 5
    Persistence : Superblock is persistent

          State : inactive

  Delta Devices : 1, (-1->0)
      New Level : raid5
     New Layout : left-symmetric
  New Chunksize : 512K

           Name : nas:0  (local to host nas)
           UUID : d7d800b3:d203ff93:9cc2149a:804a1b97
         Events : 38602

    Number   Major   Minor   RaidDevice

       -       8       65        -        /dev/sde1
       -       8       49        -        /dev/sdd1
       -       8       33        -        /dev/sdc1
       -       8       17        -        /dev/sdb1
       -       8        1        -        /dev/sda1


Thanks for your help

Greetings

Thomas





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