Unable to write buffer. How do I debug?

[Sibiu]

I am trying to run NextPVR as an addon to home assistant, which means that home assistant essentially manages the docker environment, ensuring that the folders and ports are mapped etc. but otherwise it is a docker container. My NPVR docker image has two mount points, one /config that is mapped to a local folder on my ha server and /share which is where the buffer is held. /share is actually mapped to a cifs mounted folder on the ha instance.

Anyway enough background, when I try to play a channel in NPVR I get the following in the log

Code:

[color=#6a9955][font=Consolas, 'Courier New', monospace]2022-08-14[/font][/color][color=#d4d4d4][font=Consolas, 'Courier New', monospace] [/font][/color][color=#6a9955][font=Consolas, 'Courier New', monospace]16:45:46.945[/font][/color][color=#d4d4d4][font=Consolas, 'Courier New', monospace] [/font][/color][color=#ce9178][font=Consolas, 'Courier New', monospace][b][ERROR][/b][/font][/color][color=#d4d4d4][color=#d4d4d4][font=Consolas, 'Courier New', monospace][[/font][/color][/color][color=#569cd6][font=Consolas, 'Courier New', monospace]6[/font][/color][color=#d4d4d4][color=#d4d4d4][font=Consolas, 'Courier New', monospace]]  Unexpected error writing to OutputSink: [/font][/color][/color][color=#ce9178][font=Consolas, 'Courier New', monospace][i]System.UnauthorizedAccessException[/i][/font][/color][color=#d4d4d4][color=#d4d4d4][font=Consolas, 'Courier New', monospace]: Access to the path [/font][/color][/color][color=#ce9178][font=Consolas, 'Courier New', monospace]'/share/fs/multimedia/Buffer/live-ITV2-1-1.ts'[/font][/color][color=#d4d4d4][color=#d4d4d4][font=Consolas, 'Courier New', monospace] is denied.[/font][/color][/color]
[color=#d4d4d4][font=Consolas, 'Courier New', monospace][color=#d4d4d4] ---> [/color][color=#ce9178][i]System.IO.IOException[/i][/color][color=#d4d4d4]: Permission denied[/color]
[color=#d4d4d4]   --- End of inner exception stack trace ---[/color]
[color=#ce9178][i]   at System.IO.FileStream.WriteNative(ReadOnlySpan`1 source)[/i][/color]
[color=#ce9178][i]   at System.IO.FileStream.FlushWriteBuffer()[/i][/color]
[color=#ce9178][i]   at System.IO.FileStream.WriteSpan(ReadOnlySpan`1 source)[/i][/color]
[color=#ce9178][i]   at System.IO.FileStream.Write(Byte[] array, Int32 offset, Int32 count)[/i][/color]
[color=#ce9178][i]   at NShared.Writer.OutputSink.Write(Byte[] data, Int32 offset, Int32 length)[/i][/color]
[color=#6a9955]2022-08-14[/color] [color=#6a9955]16:45:46.945[/color] [color=#569cd6][DEBUG][/color][color=#d4d4d4][[/color][color=#569cd6]21[/color][color=#d4d4d4]] StopStream([/color][color=#569cd6]1572865[/color][color=#d4d4d4])...[/color]
[color=#6a9955]2022-08-14[/color] [color=#6a9955]16:45:46.945[/color] [color=#569cd6][DEBUG][/color][color=#d4d4d4][[/color][color=#569cd6]21[/color][color=#d4d4d4]] clientHandle[[/color][color=#569cd6]0fdfb396-392b-45a5-8bea-40c8eff81ba2[/color][color=#d4d4d4]] = [/color][color=#569cd6]1572865[/color]
[color=#6a9955]2022-08-14[/color] [color=#6a9955]16:45:46.945[/color] [color=#569cd6][DEBUG][/color][color=#d4d4d4][[/color][color=#569cd6]21[/color][color=#d4d4d4]] Calling StopStream()[/color]
[color=#6a9955]2022-08-14[/color] [color=#6a9955]16:45:46.951[/color] [color=#569cd6][DEBUG][/color][color=#d4d4d4][[/color][color=#569cd6]21[/color][color=#d4d4d4]] StopStream([/color][color=#569cd6]1[/color][color=#d4d4d4])[/color]
[color=#6a9955]2022-08-14[/color] [color=#6a9955]16:45:46.952[/color] [color=#569cd6][DEBUG][/color][color=#d4d4d4][[/color][color=#569cd6]21[/color][color=#d4d4d4]] StopStream handle: [/color][color=#569cd6]1[/color]
[color=#6a9955]2022-08-14[/color] [color=#6a9955]16:45:46.953[/color] [color=#569cd6][DEBUG][/color][color=#d4d4d4][[/color][color=#569cd6]21[/color][color=#d4d4d4]] Closing TSWriter....: LIVE&/share/fs/multimedia/Buffer/live-[/color][color=#569cd6]ITV2-1-1.ts[/color]
[color=#6a9955]2022-08-14[/color] [color=#6a9955]16:45:46.956[/color] [color=#569cd6][DEBUG][/color][color=#d4d4d4][[/color][color=#569cd6]16[/color][color=#d4d4d4]] [/color][color=#569cd6]writer.Close[/color][color=#d4d4d4]() failed: [/color][color=#ce9178][i]System.UnauthorizedAccessException[/i][/color][color=#d4d4d4]: Access to the path [/color][color=#ce9178]'/share/fs/multimedia/Buffer/live-ITV2-1-1.ts'[/color][color=#d4d4d4] is denied.[/color]
[color=#d4d4d4] ---> [/color][color=#ce9178][i]System.IO.IOException[/i][/color][color=#d4d4d4]: Permission denied[/color]
[color=#d4d4d4]   --- End of inner exception stack trace ---[/color]
[color=#ce9178][i]   at System.IO.FileStream.WriteNative(ReadOnlySpan`1 source)[/i][/color]
[color=#ce9178][i]   at System.IO.FileStream.FlushWriteBuffer()[/i][/color]
[color=#ce9178][i]   at System.IO.FileStream.Dispose(Boolean disposing)[/i][/color]
[color=#ce9178][i]   at System.IO.Stream.Close()[/i][/color]
[color=#ce9178][i]   at NShared.Writer.OutputSink.<Close>b__23_0()[/i][/color]
[color=#6a9955]2022-08-14[/color] [color=#6a9955]16:45:46.956[/color] [color=#ce9178][b][ERROR][/b][/color][color=#d4d4d4][[/color][color=#569cd6]21[/color][color=#d4d4d4]] [/color][color=#569cd6]writer.Close[/color][color=#d4d4d4]() did not complete in a timely fashion[/color]
[color=#6a9955]2022-08-14[/color] [color=#6a9955]16:45:46.956[/color] [color=#569cd6][DEBUG][/color][color=#d4d4d4][[/color][color=#569cd6]21[/color][color=#d4d4d4]] Close@[/color][color=#569cd6]2[/color]
[color=#6a9955]2022-08-14[/color] [color=#6a9955]16:45:46.956[/color] [color=#569cd6][DEBUG][/color][color=#d4d4d4][[/color][color=#569cd6]21[/color][color=#d4d4d4]] deleting /share/fs/multimedia/Buffer/live-[/color][color=#569cd6]ITV2-1-1.ts.map[/color]
[color=#6a9955]2022-08-14[/color] [color=#6a9955]16:45:46.962[/color] [color=#569cd6][DEBUG][/color][color=#d4d4d4][[/color][color=#569cd6]21[/color][color=#d4d4d4]] Close@exit[/color]
[color=#6a9955]2022-08-14[/color] [color=#6a9955]16:45:46.962[/color] [color=#569cd6][DEBUG][/color][color=#d4d4d4][[/color][color=#569cd6]21[/color][color=#d4d4d4]] StopStream@exit[/color]
[color=#6a9955]2022-08-14[/color] [color=#6a9955]16:45:46.987[/color] [color=#569cd6][DEBUG][/color][color=#d4d4d4][[/color][color=#569cd6]21[/color][color=#d4d4d4]] stopping graph[/color]
[color=#6a9955]2022-08-14[/color] [color=#6a9955]16:45:46.987[/color] [color=#569cd6][DEBUG][/color][color=#d4d4d4][[/color][color=#569cd6]21[/color][color=#d4d4d4]] destroying graph[/color]
[color=#6a9955]2022-08-14[/color] [color=#6a9955]16:45:46.987[/color] [color=#b5cea8][INFO][/color][color=#d4d4d4][[/color][color=#569cd6]21[/color][color=#d4d4d4]]  Stopped[/color][/font][/color]

This reads to me that there is a problem writing to the buffer folder, however if I log on to the docker container and try to write a test file as the same user as NPVR it is sucessful

Code:

root@local-nextpvr:/share/fs/multimedia# ps aux
USER         PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
root           1  0.9  1.3 23357400 220012 ?     Ssl  16:42   0:05 dotnet /app/NextPVRServer.dll
root         188  0.0  0.0  19572  3436 pts/1    Ss   16:47   0:00 /bin/bash
root         341  0.0  0.0  34408  2860 pts/1    R+   16:51   0:00 ps aux
root@local-nextpvr:/share/fs/multimedia# ls
@Recently-Snapshot  @Recycle  Audio  Books  Buffer  Pictures  Samples  Video
root@local-nextpvr:/share/fs/multimedia# cd Buffer/
root@local-nextpvr:/share/fs/multimedia/Buffer# echo >live-ITV2-1-1.ts hello
root@local-nextpvr:/share/fs/multimedia/Buffer# ls
live-ITV2-1-1.ts

My question is, if the container user can write to the folder, but NPVR cannot, what is the problem, or what can I do to get more information as I have run out of ideas on how to troubleshoot

Thanks

Paul

[mvallevand]

Upload the zipped logs that NextPVR provides and we can have look for possible issues.

Running a bash shell may not be the same user the container starts with, that that is a startup parameter.

Martin

[Sibiu]

The most recent logs as requested

Regards

Paul

[mvallevand]

Thanks for the logs I don't see any issue either, except NextPVR could trap the error better. We don't see that your folder has read attributes.

Maybe try running the NextPVR docker with another username?

Martin

[mkomko]

@Sibiu: Did you ever find a solution? I have the same problem.

[mvallevand]

@Sibiu: Did you ever find a solution? I have the same problem.

No point in asking others since this is not a NextPVR problem, recording and live TV works.   Start by uploading the zipped logs for us, the problem will be how you name mount the folders.

Martin