Hi Adam,

Adam Weremczuk <ad...@matrixscience.com> writes:

> All files copied were under 500 MB in size each, guaranteed.
>
> No dmesg entries from around the copy failure time.
>
> Syslog reveals this:
>
> Jan 13 19:46:06 eagle ntfs-3g[4262]: No free mft record for $MFT: No
> space left on device
> Jan 13 19:46:06 eagle ntfs-3g[4262]: message repeated 40 times: [ No
> free mft record for $MFT: No space left on device]
> Jan 13 19:46:06 eagle smartd[988]: Device: /dev/sdb [SAT], SMART
> Prefailure Attribute: 1 Raw_Read_Error_Rate changed from 81 to 76
> Jan 13 19:46:06 eagle smartd[988]: Device: /dev/sdb [SAT], SMART Usage
> Attribute: 190 Airflow_Temperature_Cel changed from 64 to 65
> Jan 13 19:46:06 eagle smartd[988]: Device: /dev/sdb [SAT], SMART Usage
> Attribute: 194 Temperature_Celsius changed from 36 to 35
> Jan 13 19:46:06 eagle smartd[988]: Device: /dev/sdb [SAT], SMART Usage
> Attribute: 195 Hardware_ECC_Recovered changed from 81 to 76
> Jan 13 19:46:06 eagle ntfs-3g[4262]: No free mft record for $MFT: No
> space left on device
> Jan 13 19:46:15 eagle ntfs-3g[4262]: message repeated 3154 times: [ No
> free mft record for $MFT: No space left on device]
>
> Is it some kind of NVMe temp garbage overhead?

Possibly.  I haven't been following the thread very attentively and have no
particular expertise, but maybe you are running to an issue similar to
the one described in the link below where the garbage collection of the
NVMe's internal index of space usage doesn't happen fast enough:

  https://github.com/FOGProject/fogproject/issues/421#issuecomment-1507351213

Cheers,

Loris

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