So I got a new motherboard/ram/cpu and I am still getting this issue periodically. It has nothing to do with drives going to sleep, I see it when say I might have a couple GB of data queued to download in Sabnzbd and it will be actively downloading and then it pauses itself because the incoming share is no longer available. I can notice this within seconds of it happening and I unpause it and it starts working again. These are just split second glitches that cause a share to suddenly not be there. I see it with Sonarr if I am importing a large group of files there may be 1 or 2 that didn't import and it is because the destination folder disappeared for a moment, it skips that file and goes on to the next and it starts working again because this only lasts for a split second.

Have you still been seeing this with your new build?

On 7/19/2025 at 12:16 PM, sfef said:

So I got a new motherboard/ram/cpu and I am still getting this issue periodically. It has nothing to do with drives going to sleep, I see it when say I might have a couple GB of data queued to download in Sabnzbd and it will be actively downloading and then it pauses itself because the incoming share is no longer available. I can notice this within seconds of it happening and I unpause it and it starts working again. These are just split second glitches that cause a share to suddenly not be there. I see it with Sonarr if I am importing a large group of files there may be 1 or 2 that didn't import and it is because the destination folder disappeared for a moment, it skips that file and goes on to the next and it starts working again because this only lasts for a split second.

Have you still been seeing this with your new build?

Yeah so it's been a few weeks of running a brand new build. I started from scratch with the media as well and I am STILL seeing this issue. I just scanned my Plex library and it removed 100 shows because they are "missing" when they are STILL present on disk. This is baffling.

The craziest part is I have all new disks. None of the same disks as the old build. I cannot understand what is going on. Let me know if you're able to find a solution.

You're going to have to provide a LOT more information if you want help.

How are the disks connected to the system?

Screenshots of the docker run output.

Screenshots of the Shares Tab.

Diagnostics.zip

It's not something I've personally experienced.

Can you browse the shares from within the docker container and physically see the files?

Ensure the path exists and the user running Sonarr has the correct permissions to access this file/folder <--- Right here is a clue that permissions are not being applied correctly or something is changing them.

Edited August 13, 2025Aug 13 by MowMdown

On 8/13/2025 at 5:43 PM, MowMdown said:

You're going to have to provide a LOT more information if you want help.

How are the disks connected to the system?

I'm all for giving more information as it's requested. The disks are connected via SATA directly to the controller on the motherboard - all brand new parts. I also would like to take this time to point out that due to this error I built a brand new server (to rule out any faulty hardware) and am running Unraid with new disks directly from WD (not the same as previous server).

On 8/13/2025 at 5:43 PM, MowMdown said:

Screenshots of the docker run output.

Docker run for Plex and Sonarr:

On 8/13/2025 at 5:43 PM, MowMdown said:

Screenshots of the Shares Tab.

Screenshot of the Shares Tab:

On 8/13/2025 at 5:43 PM, MowMdown said:

Diagnostics.zip

hydra-diagnostics-20250819-1619.zip

On 8/13/2025 at 5:43 PM, MowMdown said:

It's not something I've personally experienced.

Can you browse the shares from within the docker container and physically see the files?

Yes the docker container is able to see the files. Intermittently they will go "missing" to Plex/Arrs. I am unable to catch the exact moment it does since it's seemingly random. A scan inside Plex quickly reveals what went missing. And then subsequent scans will bring those items back. When they are "missing" I can still see the files from the Shares.

On 8/13/2025 at 5:43 PM, MowMdown said:

Ensure the path exists and the user running Sonarr has the correct permissions to access this file/folder <--- Right here is a clue that permissions are not being applied correctly or something is changing them.

The permissions error is a red herring. That's a generic error from Sonarr. All it really is saying is Sonarr can't see the file at that point in time. However, if I force re-scan a couple times it'll show right back up.

@ksp Your logs are spammed with all kinds of abnormalities which look like they occur right after plex container is started up, possibly related to the GPU, have you been having any other issues with your system?

There's also Aug 9 04:40:07 Hydra root: Fix Common Problems: Error: Invalid folder disk2 contained within /mnt which looks like something is possibly creating a folder and the disk isn't being mounted properly? <--- This might be your issue with missing media when plex scans an empty folder it's thinking the data on disk2 is missing before it somehow finds it?

@JorgeB can you take a look and advise?

Suggest removing the GPU (or the Nvidia drivers) first and rebooting to see if we can get a cleaner log; with all the current spam, it's very difficult to look for issues.

12 minutes ago, MowMdown said:

@ksp Your logs are spammed with all kinds of abnormalities which look like they occur right after plex container is started up, possibly related to the GPU, have you been having any other issues with your system?

Generally, no not really. Nothing else that I've really noticed. That's kind of it. I have the Nvidia GPU (in addition to the iGPU which is used for Plex) for Ollama but I can temporarily remove if that helps narrow this down.

12 minutes ago, MowMdown said:

There's also Aug 9 04:40:07 Hydra root: Fix Common Problems: Error: Invalid folder disk2 contained within /mnt which looks like something is possibly creating a folder and the disk isn't being mounted properly? <--- This might be your issue with missing media when plex scans an empty folder it's thinking the data on disk2 is missing before it somehow finds it?

That was an error on my part. I had a disk referenced in Notifiarr that isn't present. I've removed it from the container.

7 minutes ago, JorgeB said:

Suggest removing the GPU (or the Nvidia drivers) first and rebooting to see if we can get a cleaner log; with all the current spam, it's very difficult to look for issues.

Okay, I'll remove the drivers this evening, reboot and provide a new log after some time.

@MowMdown @JorgeB

Here's the Diagnostics with the GPU drivers removed and rebooted.

hydra-diagnostics-20250822-1012.zip

Syslog is clean for now, btrfs is detecting some corruption on the pool, not much but it's not normal. Scrub the pool and post the results from the GUI.

2 hours ago, JorgeB said:

Syslog is clean for now, btrfs is detecting some corruption on the pool, not much but it's not normal. Scrub the pool and post the results from the GUI.

Okay. I ran it with correct any errors and it said no errors found.

Click to reset the stats, and keep monitoring them. You can also install a script to get a notification if new errors are found. https://forums.unraid.net/topic/46802-faq-for-unraid-v6/page/2/#findComment-700582

Other than that, keep using the server normally, ideally without the GPU if possible for now, and post new diags after you notice the problem, but I suspect that there may not be anything relevant logged.

When the files go missing from Plex can you still access them locally or over SMB?

On 8/22/2025 at 1:18 PM, JorgeB said:

Click to reset the stats, and keep monitoring them. You can also install a script to get a notification if new errors are found. https://forums.unraid.net/topic/46802-faq-for-unraid-v6/page/2/#findComment-700582

Other than that, keep using the server normally, ideally without the GPU if possible for now, and post new diags after you notice the problem, but I suspect that there may not be anything relevant logged.

When the files go missing from Plex can you still access them locally or over SMB?

So I just had to re-scan a bunch of shows back in. And yep, I could access them locally and over SMB. Posting new diags here anyways just for posterity. I haven't looked at them yet. This is perplexing. Unsure what could be causing this AGAIN.

hydra-diagnostics-20250901-1907.zip

@sfef were you able to solve this? I still see this from time and time and it's crazy because I still can't root it out. I have all brand new hardware, same issue.

I still have the issue as well with new hardware and still can't figure it out. I just deal with it. I have made some adjustments to force library scans with plex to re-add items. I also have sabnzbd restart a couple times a day just in case it was paused it will resume. Things like that and it works for now. I honestly have been so busy, I haven't done much of anything computer/home lab related for months.

On 11/3/2025 at 12:35 PM, sfef said:

I still have the issue as well with new hardware and still can't figure it out. I just deal with it. I have made some adjustments to force library scans with plex to re-add items. I also have sabnzbd restart a couple times a day just in case it was paused it will resume. Things like that and it works for now. I honestly have been so busy, I haven't done much of anything computer/home lab related for months.

Okay so we're in the same boat. Same I just got around to this, but have been dealing with it since the summer. Even if I re-scan, it's become a manual process. One re-scan usually isn't enough, and if I re-scan too many times, everything goes missing immediately. I can't nail down why this is happening. I'm now on the latest Unraid version 7.2.0 and still having issues.

It's ridiculous that this is still happening and I STILL don't have anything that I can conclusively point to as the issue. I tried a workaround to make Plex use a network share (since I thought this wasn't happening over SMB) but I learned that it was happening over the network share as well.

Weird that this only happens in the TV Shows library for Plex.

@JorgeB what else can we provide that can help us diagnose this very specific issue. For me it's went from minor inconvenience to getting pretty unusable at it's worst.

This is a rather large thread, and I don't remember what the problem was, please make a quick recap of the issue.

55 minutes ago, JorgeB said:

This is a rather large thread, and I don't remember what the problem was, please make a quick recap of the issue.

Sure. Let me recap:

Files go "missing" to the Plex and the arr apps. I can't consistently monitor but I see that in my Discord Notifiarr notifications that Sonarr is showing that episode files were deleted due to it being "MissingFromDisk." I can verify that this is not the case by checking the filesystem through the terminal. After verifying that it's still there, if I refresh & scan in Sonarr and scan libraries in Plex (sometimes it takes multiple scans) the show comes right back up in both apps and plays fine.

This is unexpected behavior and super annoying as the show when it is re-added to Plex, it will be added again in the Recently Added. And sometimes, I'll only know this is happening because someone trying to watch will tell me they can't play an episode or the entire show is missing from Plex.

I'm running a server with identical setup that has never seen these issues.

Additional information:

File structure:

mnt/

..└── user/

....└── data/

......├── media/

......│ ├── movies

......│ └── tvshows

......└── .downloads/

........├── tmp

........└── completed

I can't verify that the files are not missing over smb but I can verify that they are still there when I ssh in and ls. They are there. Trying to access over SMB hasn't solved this issue (hacky solution anyways but wanted to see if that would help cuz I've been pulling my hair out).

This ONLY happens to the TV Shows library. I've never seen it happen to the Movies library.

Example of the message I'll see in Discord:

Then I'll go to Plex and see it show a red deleted icon. I'll re-scan 1-2 times and hopefully it'll show up again. It was never deleted, but Plex and the arrs think it was. Not sure why or how to even diagnose.

16 minutes ago, ksp said:

I can verify that this is not the case by checking the filesystem through the terminal.

If the files are actually there, and only the containers don't see them, looks more like a container issue to me, did you try asking in the support thread for the arr apps in case it's a known config issue or something?

It's very difficult that I will be able to help, since I'm not familiar with thoses apps, and if the files show on Unraid and they are not actually missing, also don't expect to see any issues logged.

Just now, JorgeB said:

If the files are actually there, and only the containers don't see them, looks more like a container issue to me, did you try asking in the support thread for the arr apps in case it's a known config issue or something?

I didn't but I can. Only reason I didn't was because I have the exact same config running on another server for years now and it never had this issue crop up. I set up both servers from scratch and the 2nd server was setup using the other as reference throughout the entire process. Down to the directory structure they are the exact same.

Plex and Sonarr are affected but not Radarr. If it's container related, it'd be weird that it's not affecting the movies because if you look at the directory structure, I'm passing in /data so everything else underneath it should be affected too, not just tvshows. I find that a bit odd.

Just now, JorgeB said:

It's very difficult that I will be able to help, since I'm not familiar with thoses apps, and if the files show on Unraid and they are not actually missing, also don't expect to see any issues logged.

I understand, I wanted to ask here because all the reasons above led me to believe that it's not isolated to containers and could be an issue at the lower level. Appreciate you taking the time.

Just to add:

I see this in the debug logs for Sonarr earlier this morning:

2025-11-05 08:08:02.9|Debug|DiskScanService|Series folder doesn't exist: /data/media/tvshows/13 Reasons Why (2017) {tvdb-323168}

@JorgeB

Edited November 5, 2025Nov 5 by ksp

The only think I can think of is your docker mod doing something.

run sonarr without the docker mod

Get rid of all of this and run it plain vanilla:

Edit: Also, do not give plex read/write access to your data share, make it read-only.

Edited November 5, 2025Nov 5 by MowMdown

On 11/5/2025 at 3:10 PM, MowMdown said:

The only think I can think of is your docker mod doing something.

run sonarr without the docker mod

Get rid of all of this and run it plain vanilla:

Edit: Also, do not give plex read/write access to your data share, make it read-only.

Did both of these, will report back if I see any improvements. Thank you for the suggestions.

Although I will say, I run the same docker mod on Radarr, no issues and it's confirmed to work in both without issues. Doesn't hurt to try and rule anything out.

I'm interested on if this helps, I don't run those mods.

1 hour ago, sfef said:

I'm interested on if this helps, I don't run those mods.

I'm hopeful.

You might be interested in this script I made and dockerized since I had a bit of time yesterday: https://github.com/kpatdev/missingmediascanner

Very niche, and likely overkill but I was really over having to go re-scan myself every time so I went down the rabbit hole. Very early and probably buggy but if this issue persists I'll maintain it. PM me ur Discord if you wanna chat further.

This is STILL happening by the way - even without the mods. Usually not as frequently but the amount of shows that go "missing" increases exponentially over time reaching over 10k episodes "missing" even though re-scans cause them to show back up.

Any changes on your end @sfef?

Wondering if anyone's been able to root out the issue because even after diagnostics, this problem still stands.

9 minutes ago, ksp said:

over 10k episodes "missing"

Does everyone experiencing these problems have extremely large media libraries? Maybe something is running out of memory.