btashton commented on issue #2092:
URL: 
https://github.com/apache/incubator-nuttx/issues/2092#issuecomment-727361681


   I think there are very bad things happening here.  I cleaned up some 
configuration settings so the initial file writing works, but I am seeing what 
looks like inodes being overwritten.
   
   We can see `EVwni0b4` verified, but after the next round of files are 
written it seems to have been overwritten.
   
   ```
   Directory:
    1. Type[8]: File  Name: EVwni0b4
    2. Type[8]: File  Name: iDrgzlIPo4OF
    3. Type[8]: File  Name: Jr7euPt7BEA5R
    4. Type[8]: File  Name: txgGQpEb
    5. Type[8]: File  Name: 5lCi
    6. Type[8]: File  Name: PVd33
    7. Type[8]: File  Name: 8An2DVQZMEHq75SV9uzh
    8. Type[8]: File  Name: g0x7Sj4a8Vw1D0g6qmq
    9. Type[8]: File  Name: olO4Qw5g8KLnuD2DR3jZ
   10. Type[8]: File  Name: QctLaNi7rqQi
   11. Type[8]: File  Name: GXPLOKsvH0VAw
   12. Type[8]: File  Name: aqPFCVxkRabuT
   13. Type[8]: File  Name: m
   14. Type[8]: File  Name: SUR5KNn9hLHhMEq2Bav
   15. Type[8]: File  Name: c3s50WlUBrMjfvm7I6
   16. Type[8]: File  Name: 8a
   17. Type[8]: File  Name: pFM1IwB6GmecRJATcrbT
   18. Type[8]: File  Name: WyD7w
   19. Type[8]: File  Name: fD29PA0Z793z1eBJ
   20. Type[8]: File  Name: l0TBNGiFmhLeSa
   21. Type[8]: File  Name: K9UG0W0pUiI
   22. Type[8]: File  Name: mDP5chi
   23. Type[8]: File  Name: ufAsEPLpg
   24. Type[8]: File  Name: FF9ZJ
   25. Type[8]: File  Name: SY0qvj4Do8jsL3upQHIM
   26. Type[8]: File  Name: pMZ5Ren
     Verifed file /mnt/nxffs/EVwni0b4
   Deleted file 1 OK
   Deleted file 2 OK
   Deleted file 3 OK
   Deleted file 4 OK
   Deleted file 5 OK
   Deleted file 6 OK
     Verifed file /mnt/nxffs/iDrgzlIPo4OF
   Deleted file 8 OK
   Deleted file 9 OK
   Deleted file 10 OK
   Deleted file 11 OK
   Deleted file 12 OK
   Deleted file 13 OK
   Deleted file 14 OK
   Deleted file 15 OK
   Deleted file 16 OK
   Deleted file 17 OK
   Deleted file 18 OK
   Deleted file 19 OK
   Deleted file 20 OK
   Deleted file 21 OK
   Deleted file 22 OK
   Deleted file 23 OK
   Deleted file 24 OK
   Deleted file 25 OK
   Deleted file 26 OK
   Deleted file 27 OK
   Deleted file 28 OK
   Deleted file 29 OK
   Deleted file 30 OK
   Deleted file 31 OK
   Deleted file 32 OK
   Deleted file 33 OK
   Deleted file 34 OK
   Deleted file 35 OK
   Deleted file 36 OK
   Deleted file 37 OK
   Deleted file 38 OK
   Deleted file 39 OK
   Deleted file 40 OK
   Deleted file 41 OK
   Deleted file 42 OK
   Deleted file 43 OK
   Deleted file 44 OK
   Deleted file 45 OK
   Deleted file 46 OK
   Deleted file 47 OK
   Deleted file 48 OK
   Deleted file 49 OK
   Deleted file 50 OK
   Deleted file 51 OK
   Deleted file 52 OK
   Deleted file 53 OK
   Deleted file 54 OK
   Deleted file 55 OK
   Deleted file 56 OK
   Deleted file 57 OK
   Deleted file 58 OK
   Deleted file 59 OK
   Deleted file 60 OK
   Deleted file 61 OK
   Deleted file 62 OK
   Deleted file 63 OK
   Deleted file 64 OK
   Deleted file 65 OK
   Deleted file 66 OK
   Deleted file 67 OK
     Verifed file /mnt/nxffs/Jr7euPt7BEA5R
     Verifed file /mnt/nxffs/ufAsEPLpg
   Deleted file 70 OK
   Deleted file 71 OK
     Verifed file /mnt/nxffs/txgGQpEb
   Deleted file 73 OK
     Verifed file /mnt/nxffs/5lCi
     Verifed file /mnt/nxffs/PVd33
   Deleted file 76 OK
   Deleted file 77 OK
   Deleted file 78 OK
   Deleted file 79 OK
     Verifed file /mnt/nxffs/8An2DVQZMEHq75SV9uzh
     Verifed file /mnt/nxffs/FF9ZJ
     Verifed file /mnt/nxffs/g0x7Sj4a8Vw1D0g6qmq
     Verifed file /mnt/nxffs/SY0qvj4Do8jsL3upQHIM
   Deleted file 84 OK
     Verifed file /mnt/nxffs/olO4Qw5g8KLnuD2DR3jZ
     Verifed file /mnt/nxffs/QctLaNi7rqQi
     Verifed file /mnt/nxffs/GXPLOKsvH0VAw
     Verifed file /mnt/nxffs/aqPFCVxkRabuT
     Verifed file /mnt/nxffs/m
     Verifed file /mnt/nxffs/SUR5KNn9hLHhMEq2Bav
     Verifed file /mnt/nxffs/c3s50WlUBrMjfvm7I6
     Verifed file /mnt/nxffs/8a
     Verifed file /mnt/nxffs/pFM1IwB6GmecRJATcrbT
     Verifed file /mnt/nxffs/WyD7w
     Verifed file /mnt/nxffs/fD29PA0Z793z1eBJ
     Verifed file /mnt/nxffs/l0TBNGiFmhLeSa
     Verifed file /mnt/nxffs/pMZ5Ren
     Verifed file /mnt/nxffs/K9UG0W0pUiI
     Verifed file /mnt/nxffs/mDP5chi
   Verified!  Number of files: 26
     Number deleted:  0
   End of loop memory usage:
   VARIABLE  BEFORE   AFTER
   ======== ======== ========
   arena     4000000  4000000
   ordblks         7        9
   mxordblk  3efb9b0  3efb9b0
   uordblks   104530   103970
   fordblks  3efbad0  3efc690
   === FILLING 3 =============================
     Created file /mnt/nxffs/rv1d23qQowAyOOybigf
     Created file /mnt/nxffs/IGm9i8Eeuk3xI5DO9j
     Created file /mnt/nxffs/k1UxeovUm
     Created file /mnt/nxffs/2dayoJq
     Created file /mnt/nxffs/u
     Created file /mnt/nxffs/N0TfRWdi8eP
     Created file /mnt/nxffs/vaELE4Vu9ujaN3mnceZ
     Created file /mnt/nxffs/svTtWKR6u32hPEKWJ
     Created file /mnt/nxffs/IXR
     Created file /mnt/nxffs/hDAqEP71e
     Created file /mnt/nxffs/MUMRVI0fvkxFYWwW0
     Created file /mnt/nxffs/F
     Created file /mnt/nxffs/EYa
     Created file /mnt/nxffs/rFSHIEYHDG1qCwlm3ft0
     Created file /mnt/nxffs/7WB0NPulsgooMAZ
     Created file /mnt/nxffs/XT0JXlcbHfqw0ctQbW7X
     Created file /mnt/nxffs/DIv21rB838p
     Created file /mnt/nxffs/C9aEwUyMf
     Created file /mnt/nxffs/S
     Created file /mnt/nxffs/tJYf0p
     Created file /mnt/nxffs/0NkL9XmJI
     Created file /mnt/nxffs/NCyEt6CsqiU
     Created file /mnt/nxffs/gtcKesg5H5mN0ddQ0Nl7
     Created file /mnt/nxffs/KZNZI
     Created file /mnt/nxffs/fBJQtXCFpvwkWCL1qbG10
     Created file /mnt/nxffs/LqtoYZOYVUoAJfg
     Created file /mnt/nxffs/i
     Created file /mnt/nxffs/eaAhsx0to7pMAE
     Created file /mnt/nxffs/9HXq5XP9MME43O
     Created file /mnt/nxffs/ubRz8G1I
     Created file /mnt/nxffs/x0X8ZxSe1
     Created file /mnt/nxffs/Q2rXBByVCiP7qOy
     Created file /mnt/nxffs/gqxCahyLpCg
     Created file /mnt/nxffs/ICNIvjBWk
     Created file /mnt/nxffs/g
     Created file /mnt/nxffs/vB1A
     Created file /mnt/nxffs/vbROd4I3x
     Created file /mnt/nxffs/c2XKKTVn0gDwuc
     Created file /mnt/nxffs/YD9HYOHRI
     Created file /mnt/nxffs/z2vy
     Created file /mnt/nxffs/q3v6J
     Created file /mnt/nxffs/9QFeGiONb8YOx
     Created file /mnt/nxffs/mhuEB
     Created file /mnt/nxffs/tMSfsPfCjANpL5z0Ybg
     Created file /mnt/nxffs/66P46Fl
     Created file /mnt/nxffs/RQRZthIu
     Created file /mnt/nxffs/4egmeJXMXKM
     Created file /mnt/nxffs/xgVKU5
     Created file /mnt/nxffs/PGGrd5Mp2VjX0Vg9Z
     Created file /mnt/nxffs/nuyctksR2i3NYCRW
     Created file /mnt/nxffs/AToBcySZDyj481
     Created file /mnt/nxffs/CnPmw
     Created file /mnt/nxffs/Gd2M
     Created file /mnt/nxffs/kfGMhZI9y5QvSmEvA4m0a
     Created file /mnt/nxffs/EMBHCBBN0sn41
     Created file /mnt/nxffs/6z642daOwdc6
     Created file /mnt/nxffs/EiCJh
     Created file /mnt/nxffs/kaiOFKV4XgC1F0sMF
     Created file /mnt/nxffs/xBKe5r7FNI
     Created file /mnt/nxffs/FA0frl9XCfVer
     Created file /mnt/nxffs/e2c547
     Created file /mnt/nxffs/LOX
     Created file /mnt/nxffs/orkByhdTUvnGLoO
     Created file /mnt/nxffs/A9eABe39d52Rj
     Created file /mnt/nxffs/41BD3vzzNn1AiVfA
     Created file /mnt/nxffs/DhZ5bn
     Created file /mnt/nxffs/JWlCZ5WnW2yN0FJqo
     Created file /mnt/nxffs/j1PojXROB
     Created file /mnt/nxffs/MK1bz
     Created file /mnt/nxffs/1C1V2pv
     Created file /mnt/nxffs/Tf0flG00CHZHf
     Created file /mnt/nxffs/Mq0tjUw0SI0
     Created file /mnt/nxffs/9y2ohs1rSvNbT55k3b0I
     Created file /mnt/nxffs/N62fy
   Filled file system
     Number of files: 100
     Number deleted:  0
   Directory:
    1. Type[8]: File  Name: tJYf0p
    2. Type[8]: File  Name: 0NkL9XmJI
    3. Type[8]: File  Name: NCyEt6CsqiU
    4. Type[8]: File  Name: gtcKesg5H5mN0ddQ0Nl7
    5. Type[8]: File  Name: KZNZI
    6. Type[8]: File  Name: fBJQtXCFpvwkWCL1qbG10
    7. Type[8]: File  Name: LqtoYZOYVUoAJfg
    8. Type[8]: File  Name: i
    9. Type[8]: File  Name: eaAhsx0to7pMAE
   10. Type[8]: File  Name: 9HXq5XP9MME43O
   11. Type[8]: File  Name: ubRz8G1I
   12. Type[8]: File  Name: x0X8ZxSe1
   13. Type[8]: File  Name: Q2rXBByVCiP7qOy
   14. Type[8]: File  Name: gqxCahyLpCg
   15. Type[8]: File  Name: ICNIvjBWk
   16. Type[8]: File  Name: g
   17. Type[8]: File  Name: vB1A
   18. Type[8]: File  Name: vbROd4I3x
   19. Type[8]: File  Name: c2XKKTVn0gDwuc
   20. Type[8]: File  Name: YD9HYOHRI
   21. Type[8]: File  Name: z2vy
   22. Type[8]: File  Name: q3v6J
   23. Type[8]: File  Name: 9QFeGiONb8YOx
   24. Type[8]: File  Name: mhuEB
   25. Type[8]: File  Name: tMSfsPfCjANpL5z0Ybg
   26. Type[8]: File  Name: 66P46Fl
   27. Type[8]: File  Name: RQRZthIu
   28. Type[8]: File  Name: 4egmeJXMXKM
   29. Type[8]: File  Name: xgVKU5
   30. Type[8]: File  Name: PGGrd5Mp2VjX0Vg9Z
   31. Type[8]: File  Name: nuyctksR2i3NYCRW
   32. Type[8]: File  Name: AToBcySZDyj481
   33. Type[8]: File  Name: CnPmw
   34. Type[8]: File  Name: Gd2M
   35. Type[8]: File  Name: kfGMhZI9y5QvSmEvA4m0a
   36. Type[8]: File  Name: EMBHCBBN0sn41
   37. Type[8]: File  Name: 6z642daOwdc6
   38. Type[8]: File  Name: EiCJh
   39. Type[8]: File  Name: kaiOFKV4XgC1F0sMF
   40. Type[8]: File  Name: xBKe5r7FNI
   41. Type[8]: File  Name: FA0frl9XCfVer
   42. Type[8]: File  Name: e2c547
   43. Type[8]: File  Name: LOX
   44. Type[8]: File  Name: orkByhdTUvnGLoO
   45. Type[8]: File  Name: A9eABe39d52Rj
   46. Type[8]: File  Name: 41BD3vzzNn1AiVfA
   47. Type[8]: File  Name: DhZ5bn
   48. Type[8]: File  Name: JWlCZ5WnW2yN0FJqo
   49. Type[8]: File  Name: j1PojXROB
   50. Type[8]: File  Name: MK1bz
   51. Type[8]: File  Name: 1C1V2pv
   52. Type[8]: File  Name: Tf0flG00CHZHf
   53. Type[8]: File  Name: Mq0tjUw0SI0
   54. Type[8]: File  Name: 9y2ohs1rSvNbT55k3b0I
   55. Type[8]: File  Name: N62fy
   ERROR: Failed to open file for reading: 2
     File name: /mnt/nxffs/EVwni0b4
     File size: 6394
   ERROR: Failed to read a file: 0
     File name: /mnt/nxffs/EVwni0b4
     File size: 6394
   ERROR: Failed to verify files
     Number of files: 100
     Number deleted:  0
   ```


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