Files perpetually out of sync between Linux and Android despite Ignore Permissions being set to true, error "operation not permitted"

[akirapink (Akira)]

Relevant log output, identifiable info manually removed

18:39:21 [QR2YJ] INFO: Puller (folder "folderdude" (*****-*****), item "example/file.md"): syncing: finishing: opening temp file: open /storage/emulated/0/example/file.md.tmp: operation not permitted
18:39:21 [QR2YJ] INFO: "folderdude" (*****-*****): Failed to sync 2 items
18:39:21 [QR2YJ] INFO: Folder "folderdude" (*****-*****) isn't making sync progress - retrying in 8m0s.

Repeated many, many times. Once for each file.

Not sure what happened here… Started on just one of my shared folders, with just a few files, but now it is happening to more files in other folders

Worth noting: Primary device (Fedora Linux) uses version 1.28.1 of Syncthing, secondary device (Android) uses Version 1.29.2 of Syncthing-Fork. I cannot update Syncthing on my primary device yet, for the latest version does not appear to be available for Fedora 41 yet.

[chaos]

The most common reason for this that I’ve seen has been that the user that owns the Syncthing process doesn’t have the correct file rights.

(EDITED for poor word choice)

[akirapink (Akira)]

I’ve cheked with ls -l, and the folders do belong to my user, and have full read/write/execute access throughout. And I’ve checked with btop, and the Syncthing process does belong to my user. What now?

[chaos]

Ideas:

• Are the files in question open while being synced?
• Is this happening on one Device only?
• Please post the full GUI from both sides.
• Please consider using fsck on the filesystem in question.
• Are there any other log entries in Syncthing that might shed a light on this? If nothing pops out, please turn on the “fs” debug facility and see if that comes up with anything new.