issues with mounted share in Plex LXC - console can see folders but plex app can't

[chenks]

hi, bit of a weird one, but pretty sure i've made a mistake somewhere along the lines.

pve 8.2.2
plex LXC (ubunut unprivileged) created using the current script (https://helper-scripts.com/scripts?id=Plex+Media+Server)

i have my NAS mounted to the PVE at
/mnt/smbshare/media/ which i can fully access with read/write permissions

i then used
mp0: /mnt/smbshare/media/,mp=/mnt/media
within the conf file to mount that inside the LXC

when i connect to the plex lxc console i can browse to /mnt/media and i can see all the folders and read/write no problems.

however when i go into plex and try to add that as a library location plex sees no folders at all

on the console it looks like this

what have i screwed up?
also, have i made an initial mistake making it unprivileged? i just selected auto when the script ran to created the LXC so i don't remember it asking me, i guess it only would if i used the advanced option.

pve is running on 12th gen intel i3-12100 with 32GB DDR5. i play all my content on current gen appletv's so don't anticipate needing transcoding but ideally would want it enabled regardless (i don't have plex pass though).

[Mellowlynx]

Can you click on media?
I think you entered the path in the bar, this will not update the file list on the right.
If you click "media" I think you will see your folders.

Else, click on / scroll to and click on mnt then click media

Hope this works, everything else is as I have it as well.

[Mellowlynx]

I did some digging around, and it looks like a permission's problem indeed.
I read somewhere that the LXC must be privileged to use samba.
This can be the reason why mine is working in unprivileged because I added the share different, but I'm not sure about that.

Sadly, I can't test because everything in my full cluster is in production, and I do not have a spare test machine at the moment.
Maybe this tutorial is worth a try: https://forum.proxmox.com/threads/tutorial-unprivileged-lxcs-mount-cifs-shares.101795/
It tries to mount the share as a different user, Plex in your case.

Else I hope you can find a solution that works for you by looking around online, I found a lot of about the same Plex + NAS problems, so there must be something that can work for you.

[chenks]

I read somewhere that the LXC must be privileged to use samba.

hmm yeah not sure that can be correct though, as all my other LXCs are unprivileged and they can read/write to the mounted smb share just fine.

i suspect the user that the plex app uses is not "root" and that's why the folder appears empty.
however in the deb12 LXCs i get a specific "permission denied" error when there is a permission issues, not sure if ubuntu does it differently and just displays a blank folder instead.

i will dig about some more

also, that link to the tutorial is what i used to originally mount my share.

[chenks]

@Mellowlynx it was indeed a permissions issue.
i added the user plex to the permissions group and, after a reboot, plex can now correctly see everything in /mnt/media

[Mellowlynx]

Great, happy you resolved it 😀

[rucknapucknavitz]

Someone posted this script on the proxmox forums that can largely automate this process - but take note of the edit currently needed in Step one to create the lxc_share group.

https://gist.github.com/NorkzYT/14449b247dae9ac81ba4664564669299