"Out of Sync" on GOS; Revert button doesn't work

Support Android
1

Hi all, first thanks so much to the creators of Syncthing and the community that helps everyone too.

I’ve used Syncthing to send music files from my Ubuntu desktop (Syncthing, “send only”) to my GrapheneOS Android phone (Synthing-fork, “receive only”). It’s worked fine until, while doing a sync, the announcement of Syncthing-fork V2 broke the sync, leaving a bunch of files “Out of Sync”.

I performed the V2 upgrade, but that did not solve the problem. Upon looking through the internet, the main suggestion was to do Revert Local Changes on the “receive only” device (the phone). However, the Revert button did nothing.

Any tips would be much appreciated. I don’t know if this issue is caused by stricter file system control by GrapheneOS than the stock Android OS, if some other issue. Thanks in advance for your attention.

2

What happens if you try doing the same via the web GUI? It can be accessed from the left slide-out menu.

3

Good question; but unfortunately, I tried that too and no difference.

4

In that case, please provide a log from right after pressing that button. You can access it from the Web GUI under Actions → Logs.

5

Here you go. Most of the text seems to be just my failed sync attempting, but using Ctrl-F for “revert” I see the two spots where my two revert attempts this time were.

Syncthing revert attempt.txt (200.7 KB)

6

The relevant part is the following.

2025-10-21 08:01:24 INF Reverting folder (folder.label=UMus folder.id=dddvf-wmuf5 folder.type=receiveonly log.pkg=model)
2025-10-21 08:01:27 WRN Failed to revert directories (error="directory has been deleted on a remote device but contains changed files, scheduling scan" folder.label=UMus folder.id=dddvf-wmuf5 folder.type=receiveonly log.pkg=model)
2025-10-21 08:01:27 INF Created or updated directory (folder.label=UMus folder.id=dddvf-wmuf5 folder.type=receiveonly dir.name="Royce da 5'9" dir.permissions=0755 log.pkg=model)
2025-10-21 08:01:27 INF Created or updated directory (folder.label=UMus folder.id=dddvf-wmuf5 folder.type=receiveonly dir.name="Royce da 5'9" dir.permissions=0755 log.pkg=model)
2025-10-21 08:01:27 INF Created or updated directory (folder.label=UMus folder.id=dddvf-wmuf5 folder.type=receiveonly dir.name="Royce da 5'9" dir.permissions=0755 log.pkg=model)
2025-10-21 08:01:27 WRN Failed to sync (path="Royce da 5'9/Build & Destroy Lost Sessions Part 1 [x]/17 - War.mp3" error="syncing: checking parent dirs: remote \"Royce da 5'9\" uses different upper or lowercase characters than local \"Royce Da 5'9\"; change the casing on either side to match the other" folder.label=UMus folder.id=dddvf-wmuf5 folder.type=receiveonly log.pkg=model)

It then goes on with more Failed to sync errors. Have you tried to follow the message and rename the folder to match on both sides in terms of casing (Royce Da vs Royced da)? I’ve got a feeling doing that will fix the underlying issue.

7

I’ll try that Tomasz–I’m away from my desktop for a week, but when I’m back I’ll try it and report how it goes. Thanks for the suggestion.

8

Thanks Tomasz! It did work out as it turned out! No need to delete and start 120+ GB sync from scratch!