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Could not find valid secondary superblock on array disk?


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Hi all,

 

I found a few threads on similar problems, but none exactly matching my case.

 

I think I had a power cut which resulted in my server being shut down. I can't be sure, I've had some electrical work done and it might be the electrician cut the power to do some work without me realising while I was at work. Anyway, I don't know when it happened, but then I noticed one of the 8TB disks in the array gave the "Unmountable: Wrong or no file system" error.

 

I used Check Filesystem Status to run xfs_repair and it gave:

Phase 1 - find and verify superblock... bad primary superblock - bad magic number !!!

attempting to find secondary superblock... followed by an unlimited number of periods.

 

After running for half a day or so, it finally gave:

Sorry, could not find valid secondary superblock Exiting now.

 

I ran an extended SMART test, and there didn't seem to be major errors, but likely I just don't understand what I'm looking at:

=== START OF INFORMATION SECTION ===
Model Family:     Toshiba N300/MN NAS HDD
Device Model:     TOSHIBA HDWG480
Serial Number:   

LU WWN Device Id: 5 000039 b18c8a0ab
Firmware Version: 0601
User Capacity:    8,001,563,222,016 bytes [8.00 TB]
Sector Sizes:     512 bytes logical, 4096 bytes physical
Rotation Rate:    7200 rpm
Form Factor:      3.5 inches
Device is:        In smartctl database 7.3/5417
ATA Version is:   ACS-3 T13/2161-D revision 5
SATA Version is:  SATA 3.3, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is:    Sun Jun 18 19:33:38 2023 CEST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
AAM feature is:   Unavailable
APM level is:     128 (minimum power consumption without standby)
Rd look-ahead is: Enabled
Write cache is:   Enabled
DSN feature is:   Unavailable
ATA Security is:  Disabled, NOT FROZEN [SEC1]
Wt Cache Reorder: Unknown

=== START OF READ SMART DATA SECTION ===
SMART Status not supported: Incomplete response, ATA output registers missing
SMART overall-health self-assessment test result: PASSED
Warning: This result is based on an Attribute check.

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:         (  120) 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:      ( 698) 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   050    -    0
  2 Throughput_Performance  P-S---   100   100   050    -    0
  3 Spin_Up_Time            POS--K   100   100   001    -    11808
  4 Start_Stop_Count        -O--CK   100   100   000    -    1415
  5 Reallocated_Sector_Ct   PO--CK   100   100   050    -    0
  7 Seek_Error_Rate         PO-R--   100   100   050    -    0
  8 Seek_Time_Performance   P-S---   100   100   050    -    0
  9 Power_On_Hours          -O--CK   078   078   000    -    9037
 10 Spin_Retry_Count        PO--CK   100   100   030    -    0
 12 Power_Cycle_Count       -O--CK   100   100   000    -    40
191 G-Sense_Error_Rate      -O--CK   100   100   000    -    0
192 Power-Off_Retract_Count -O--CK   100   100   000    -    12
193 Load_Cycle_Count        -O--CK   100   100   000    -    2099
194 Temperature_Celsius     -O---K   100   100   000    -    34 (Min/Max 17/45)
196 Reallocated_Event_Count -O--CK   100   100   000    -    0
197 Current_Pending_Sector  -O--CK   100   100   000    -    0
198 Offline_Uncorrectable   ----CK   100   100   000    -    0
199 UDMA_CRC_Error_Count    -O--CK   200   200   000    -    0
220 Disk_Shift              -O----   100   100   000    -    34734081
222 Loaded_Hours            -O--CK   096   096   000    -    1775
223 Load_Retry_Count        -O--CK   100   100   000    -    0
224 Load_Friction           -O---K   100   100   000    -    0
226 Load-in_Time            -OS--K   100   100   000    -    517
240 Head_Flying_Hours       P-----   100   100   001    -    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     51  Comprehensive SMART error log
0x03       GPL     R/O      5  Ext. Comprehensive SMART error log
0x04       GPL,SL  R/O      8  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    513  Pending Defects log
0x10       GPL     R/O      1  NCQ Command Error log
0x11       GPL     R/O      1  SATA Phy Event Counters log
0x24       GPL     R/O  53248  Current Device Internal Status Data log
0x25       GPL     R/O  53248  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
0xae       GPL     VS      25  Device 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 (5 sectors)
No Errors Logged

SMART Extended Self-test Log Version: 1 (1 sectors)
Num  Test_Description    Status                  Remaining  LifeTime(hours)  LBA_of_first_error
# 1  Extended offline    Completed without error       00%      9022         -

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):       1 (0x0001)
Device State:                        SMART Off-line Data Collection executing in background (4)
Current Temperature:                    34 Celsius
Power Cycle Min/Max Temperature:     22/38 Celsius
Lifetime    Min/Max Temperature:     17/45 Celsius
Specified Max Operating Temperature:    55 Celsius
Under/Over Temperature Limit Count:   0/0
Vendor specific:
00 00 02 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

SCT Temperature History Version:     2
Temperature Sampling Period:         1 minute
Temperature Logging Interval:        1 minute
Min/Max recommended Temperature:      5/55 Celsius
Min/Max Temperature Limit:           -40/70 Celsius
Temperature History Size (Index):    478 (463)

Index    Estimated Time   Temperature Celsius
 464    2023-06-18 11:36    35  ****************
 ...    ..(233 skipped).    ..  ****************
 220    2023-06-18 15:30    35  ****************
 221    2023-06-18 15:31    34  ***************
 ...    ..(159 skipped).    ..  ***************
 381    2023-06-18 18:11    34  ***************
 382    2023-06-18 18:12    35  ****************
 383    2023-06-18 18:13    34  ***************
 384    2023-06-18 18:14    35  ****************
 385    2023-06-18 18:15    34  ***************
 ...    ..(  2 skipped).    ..  ***************
 388    2023-06-18 18:18    34  ***************
 389    2023-06-18 18:19    35  ****************
 390    2023-06-18 18:20    34  ***************
 391    2023-06-18 18:21    34  ***************
 392    2023-06-18 18:22    34  ***************
 393    2023-06-18 18:23    35  ****************
 394    2023-06-18 18:24    34  ***************
 395    2023-06-18 18:25    35  ****************
 396    2023-06-18 18:26    35  ****************
 397    2023-06-18 18:27    35  ****************
 398    2023-06-18 18:28    34  ***************
 399    2023-06-18 18:29    35  ****************
 400    2023-06-18 18:30    34  ***************
 401    2023-06-18 18:31    35  ****************
 402    2023-06-18 18:32    35  ****************
 403    2023-06-18 18:33    35  ****************
 404    2023-06-18 18:34    34  ***************
 405    2023-06-18 18:35    35  ****************
 ...    ..( 11 skipped).    ..  ****************
 417    2023-06-18 18:47    35  ****************
 418    2023-06-18 18:48    34  ***************
 419    2023-06-18 18:49    35  ****************
 ...    ..(  8 skipped).    ..  ****************
 428    2023-06-18 18:58    35  ****************
 429    2023-06-18 18:59    34  ***************
 430    2023-06-18 19:00    35  ****************
 ...    ..( 27 skipped).    ..  ****************
 458    2023-06-18 19:28    35  ****************
 459    2023-06-18 19:29    34  ***************
 ...    ..(  3 skipped).    ..  ***************
 463    2023-06-18 19:33    34  ***************

SMART WRITE LOG does not return COUNT and LBA_LOW register
SCT (Get) Error Recovery Control command failed

Device Statistics (GP Log 0x04)
Page  Offset Size        Value Flags Description
0x01  =====  =               =  ===  == General Statistics (rev 3) ==
0x01  0x008  4              40  ---  Lifetime Power-On Resets
0x01  0x010  4            9037  ---  Power-on Hours
0x01  0x018  6     39736601792  ---  Logical Sectors Written
0x01  0x020  6        46976063  ---  Number of Write Commands
0x01  0x028  6    286789546719  ---  Logical Sectors Read
0x01  0x030  6       164434116  ---  Number of Read Commands
0x01  0x038  6     32533200000  ---  Date and Time TimeStamp
0x02  =====  =               =  ===  == Free-Fall Statistics (rev 1) ==
0x02  0x010  4               0  ---  Overlimit Shock Events
0x03  =====  =               =  ===  == Rotating Media Statistics (rev 1) ==
0x03  0x008  4             114  ---  Spindle Motor Power-on Hours
0x03  0x010  4             582  ---  Head Flying Hours
0x03  0x018  4            2099  ---  Head Load Events
0x03  0x020  4               0  ---  Number of Reallocated Logical Sectors
0x03  0x028  4               0  ---  Read Recovery Attempts
0x03  0x030  4               0  ---  Number of Mechanical Start Failures
0x03  0x038  4               0  ---  Number of Realloc. Candidate Logical Sectors
0x03  0x040  4              12  ---  Number of High Priority Unload Events
0x04  =====  =               =  ===  == General Errors Statistics (rev 1) ==
0x04  0x008  4               0  ---  Number of Reported Uncorrectable Errors
0x04  0x010  4               0  ---  Resets Between Cmd Acceptance and Completion
0x05  =====  =               =  ===  == Temperature Statistics (rev 1) ==
0x05  0x008  1              34  ---  Current Temperature
0x05  0x010  1              33  N--  Average Short Term Temperature
0x05  0x018  1              34  N--  Average Long Term Temperature
0x05  0x020  1              45  ---  Highest Temperature
0x05  0x028  1              17  ---  Lowest Temperature
0x05  0x030  1              40  N--  Highest Average Short Term Temperature
0x05  0x038  1              21  N--  Lowest Average Short Term Temperature
0x05  0x040  1              34  N--  Highest Average Long Term Temperature
0x05  0x048  1              23  N--  Lowest Average Long Term Temperature
0x05  0x050  4               0  ---  Time in Over-Temperature
0x05  0x058  1              55  ---  Specified Maximum Operating Temperature
0x05  0x060  4               0  ---  Time in Under-Temperature
0x05  0x068  1               5  ---  Specified Minimum Operating Temperature
0x06  =====  =               =  ===  == Transport Statistics (rev 1) ==
0x06  0x008  4             243  ---  Number of Hardware Resets
0x06  0x010  4             307  ---  Number of ASR Events
0x06  0x018  4               0  ---  Number of Interface CRC Errors
0x07  =====  =               =  ===  == Solid State Device Statistics (rev 1) ==
                                |||_ C monitored condition met
                                ||__ D supports DSN
                                |___ N normalized value

Pending Defects log (GP Log 0x0c)
No Defects Logged

SATA Phy Event Counters (GP Log 0x11)
ID      Size     Value  Description
0x0001  4            0  Command failed due to ICRC error
0x0002  4            0  R_ERR response for data FIS
0x0003  4            0  R_ERR response for device-to-host data FIS
0x0004  4            0  R_ERR response for host-to-device data FIS
0x0005  4            0  R_ERR response for non-data FIS
0x0006  4            0  R_ERR response for device-to-host non-data FIS
0x0007  4            0  R_ERR response for host-to-device non-data FIS
0x0008  4            0  Device-to-host non-data FIS retries
0x0009  4            4  Transition from drive PhyRdy to drive PhyNRdy
0x000a  4            3  Device-to-host register FISes sent due to a COMRESET
0x000b  4            0  CRC errors within host-to-device FIS
0x000d  4            0  Non-CRC errors within host-to-device FIS
0x000f  4            0  R_ERR response for host-to-device data FIS, CRC
0x0010  4            0  R_ERR response for host-to-device data FIS, non-CRC
0x0012  4            0  R_ERR response for host-to-device non-data FIS, CRC
0x0013  4            0  R_ERR response for host-to-device non-data FIS, non-CRC

 

What can I do to recover my data? I tried removing the drive from the array, unmounting it, reformatting it and then remounting it, hoping that the Data-Rebuild would fix it, but once it did, it was still showing as Unmountable: Wrong or no file system. So I'm guessing the parity drive backed it up in a corrupted state?

 

My worry is, if that's the case, then even if I get a replacement drive, then Data-Rebuild will just fill it with corrupted data? Or am I completely wrong? Does it look like the drive is bad and I should get rid of it? Any help is much appreciated.

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How did you run the XFS repair - from the GUI or the command line?    If the command line exactly what command did you use as getting it wrong can produce the symptoms you described.

 

If you get an Unmountable drive showing before you start a rebuild then then this is what you will get after a rebuild.  Running XFS repair was the right thing to do to fix an 'unmountable' status , but when it failed you should have stopped and asked for advice as to the best way forward.

 

It is a shame you formatted the drive outside the array as that has reduced the chance of getting any data off it by mounting it outside the array using Unassigned Devices, although you may find recovery software such as XFS Explorer on Windows may still be able to get data off it.

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Thanks for the fast reply! I ran XFS repair from the GUI.

So would you suggest removing the drive and trying the Windows tool then as the best option?

 

Just to confirm then, the Parity backup is bad then, so I need to completely start from scratch with the whole array?

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Was the drive marked as disabled (red ‘x’) when you tried the repair?  Trying to determine if you were running the repair against the phydical dtive or the emulated one.
 

If so, then it is worth stopping the array; unassigning the drive;  restart the array so the drive is now emulated.   If it still shows unmountable then you can try running the repair on the emulated drive to see if that repairs better;    If the drive DOES now mount when starting in normal mode (or the repair succeeded) you can examine its contents to see if it looks OK as that would be what you end up with if you now rebuild.

 

You can optionally also try running XFS Explorer against the current physical drive.    Note that XFS Explorer is not free if you want to use the repair/recovery features,  but you can see what it would find using the free option.

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1 hour ago, tnboman said:

Parity backup is bad

Not sure what you mean there. Parity IS NOT a backup. Parity contains none of your data. It just allows the data from a disk to be calculated from the data on all the other disks.

 

https://docs.unraid.net/unraid-os/manual/what-is-unraid#parity-protected-array

 

1 hour ago, tnboman said:

need to completely start from scratch with the whole array

Unlikely, since each data disk in the array is an independent filesystem that can be read all by itself on any Linux.

 

But we don't have enough information to understand your complete situation.

 

Attach diagnostics to your NEXT post in this thread.

 

Could have saved some of this back and forth questions if you had already done it in your first post.

 

 

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