Linux Server Recording to Synology NAS Permission Issue

[Jator 11]

I have an Ubuntu Linux 24.20 Server (CLI only) that I have installed Emby on. I have a Synology NAS that I store all of my recordings on.

Both local users have the same username and password.

I've mounted the Synology storage path (/volume1/media/[various folders]) as /mnt/media_nas and able to access with my local Ubuntu account.  I used CIFS to setup the share and have it permanently mounted using an entry in /etc/fstab.

I can access the media_nas folders through various applications, including Channels DVR to record directly to.  However, when I try and connect with my Emby Linux server to record directly there, it gives me an error saying it can't record there.  I can access the folders on the media_nas as I have my movies showing up in Emby, so it seems to be a write permission issue.

Any suggestions on how to address?  I did a search on ChatGPT and it suggested this: 

sudo usermod -a -G jator emby

However I'm still getting the same error.

Thanks for any assistance, if it's not obvious, I'm not as familiar with Linux as I am windows but like to learn (or try to at least) new things.

Jay

[Luke 42114]

Hi, what folder path are you entering into emby server?

[Jator 11]

I use /mnt/media_nas.

Below is how I selected the TV folder to record to.

 

And here's the permissions as seen through Linux Server (logged in as local jator account):

And here's the permissions as seen through the NAS (logged in as local jator account):

Edited February 20 by Jator

[Luke 42114]

Hi there, please attach the Emby server log from when the problem occurred:

How to Report a Problem

Thanks!

 

[Jator 11]

Here you go.  Above my head but seems to be a permission issue of some sort.

Command line: /opt/emby-server/system/EmbyServer.dll -programdata /var/lib/emby -ffdetect /opt/emby-server/bin/ffdetect -ffmpeg /opt/emby-server/bin/ffmpeg -ffprobe /opt/emby-server/bin/ffprobe -restartexitcode 3 -updatepackage emby-server-deb_{version}_amd64.deb
Operating system: Linux version 6.8.0-100-generic (buildd@lcy02-amd64-061) (x86_64-linux-gnu-gcc-13 (Ubuntu 13.3.0-6ubuntu2~24.04) 13.3.0, GNU ld (GNU Binutils for Ubun
OS/Process: x64/x64
Framework: .NET 8.0.22
Runtime: opt/emby-server/system/System.Private.CoreLib.dll
Processor count: 8
Data path: /var/lib/emby
Application path: /opt/emby-server/system
System.UnauthorizedAccessException: System.UnauthorizedAccessException: Access to the path '/mnt/media_nas/emby/tv/News 8 Today at 6' is denied.
---> System.IO.IOException: Permission denied
--- End of inner exception stack trace ---
at Emby.Server.Implementations.IO.ManagedFileSystem.CreateDirectory(String path)
at Emby.LiveTV.DirectRecorder.RecordUsingCopyTo(ILiveStream liveStream, Nullable`1 wallClockStartTime, String targetFile, Action onStarted, CancellationToken cancellationToken)
at Emby.LiveTV.EmbyTV.RecordStream(TimerInfo timer, DateTimeOffset recordingEndDate, InternalActiveRecordingInfo activeRecordingInfo)
Source: Emby.Server.Implementations
TargetSite: Void CreateDirectory(System.String)
InnerException: System.IO.IOException: Permission denied
Source:
TargetSite:
2026-02-24 11:58:57.468 Info MediaSourceManager: Live stream 66e3de44239124241e1900b31f586607 consumer count is now 0
2026-02-24 11:58:57.469 Info MediaSourceManager: Closing live stream 06044cf0e6f93cdae5f285c9ecfaaeb4_01413a525b3a9622ce6fdf19f7dde354_66e3de44239124241e1900b31f586607
2026-02-24 11:58:57.469 Info SharedHttpPipelineSource: Closing SharedHttpPipelineSource
2026-02-24 11:58:57.470 Info SharedHttpPipelineSource: SharedHttpPipelineSource is done streaming.
2026-02-24 11:58:57.470 Info SharedHttpPipelineSource: Deleting temp files /var/lib/emby/transcoding-temp/cd82be01c194421aba0986a3778ea41a/0000000.ts
2026-02-24 11:58:57.471 Info MediaSourceManager: Live stream 06044cf0e6f93cdae5f285c9ecfaaeb4_01413a525b3a9622ce6fdf19f7dde354_66e3de44239124241e1900b31f586607 closed successfully
2026-02-24 11:58:57.471 Info LiveTV: Retrying recording in 60 seconds.
2026-02-24 11:58:57.471 Info LiveTV: Creating recording timer for e1d673695705437ba97b6c9e95a41f27, News 8 Today at 6 - . Timer will fire in 0.99998876 minutes
2026-02-24 11:58:57.472 Info LiveTV: Triggering refresh on /mnt/media_nas/emby/tv/News 8 Today at 6/News 8 Today at 6 2026_02_24_11_00_00.ts
2026-02-24 11:58:57.473 Info LiveTV: Refreshing recording parent /mnt/media_nas/emby
2026-02-24 11:59:07.873 Info ActivityRepository: Opening sqlite connection to /var/lib/emby/data/activitylog.db. isReadOnly: True
2026-02-24 11:59:07.873 Info ActivityRepository: Opening sqlite connection to /var/lib/emby/data/activitylog.db. isReadOnly: True

 

[Luke 42114]

@Jatordid you figure this out? The server is trying to create the recording file but is being denied access to do that by your file system.