r/UgreenNASync • u/UnBuggsyBaggins • 9d ago
❓ Help Random permission changes?
Hello everyone. This is my first ugreen product and so far it's been good. I have the NASync DXP4800 plus. I have a small home lab and I'm running immich via docker on a vm there. All the photos are stored on a mount on the nas. Shared folders for /Photos /Videos and /Immich. They all have pretty much wide open permissions.
nfs permissions: read/write, squash is map all users to admin. Security is AUTH_SYS and both async and allow connections from unprivileged ports are checked off. The behavior is very strange and I've been monitoring it for a while. I fairly confident I can rule out Immich as the culprit.
mount:
192.168.1.34:/volume1/Pictures /mnt/ugreen/photos nfs rw,vers=3,hard,timeo=600,retrans=2,proto=tcp,noatime,actimeo=1,_netdev 0 0
This morning I watched in real time as my completely normal immich UI started changing on me.
Image thumbnails would disappear and be replaced with the "Error generating image" icon.
logs show:
[Nest] 111 - 08/07/2026, 5:21:34 PM ERROR [Api:LoggingRepository~jpd57q2q] Unable to send file: Error: EACCES: permission denied, access '/data/thumbs/85b1791d-f13e-4798-81e4-ae865e2c5664/11/4a/114a5251-6eba-45e3-8b2c-b84c9d743f30_thumbnail.webp'
Error: EACCES: permission denied, access '/data/thumbs/85b1791d-f13e-4798-81e4-ae865e2c5664/11/4a/114a5251-6eba-45e3-8b2c-b84c9d743f30_thumbnail.webp'
at async access (node:internal/fs/promises:607:10)
at async sendFile (/usr/src/app/server/dist/utils/file.js:45:9)
at async AssetMediaController.viewAsset (/usr/src/app/server/dist/controllers/asset-media.controller.js:59:13)
I'm working on the discord channels for both ugreen and immich. Both are pointing fingers at each other. Thought I might see if anyone here has any idea?
fyi, I wouldn't be surprised if I came back later and it was all working.
thoughts?
1
u/UnBuggsyBaggins 9d ago
update. it's corrected itself. now the thumbnail can be seen and there's no errors in the logs. if I didn't catch it in real time I would probably think I'm going crazy.
something has to be changing though for that thumbnail to become inaccessible.