I’ve just spent a bit of time exploring Syncthing, and finding it really useful. There were a few files that gave me a bit of trouble - a line or two in the FAQ would have been a big help…
Filename case handling differences: Windows cannot tell the difference between a file named “Foo” and one named “foo”, but Linux can have two different filenames. This will show on the Windows side as a “Failed item”, but Linux will only show it as Out of sync. Maybe a good feature would be a test on the sending side, at the time of enabling the share.
Other filename problems: Some characters are possible in some operating systems, but not in others. A simple script could find and signal problem filenames. Unfortunately I fixed this problem without noting the details, so I cannot give the exact characters.
Antivirus problems: Windows Defender and other antivirus programs may delete files immediately after Syncthing has transferred them, but before they are saved (I think). Of course, this may be a good thing if there is really a virus, but I found that .eml files were not syncing, giving Syncthing log messages about not “making sync progress”. (See also this report). I think maybe the “making sync progress” message is hiding an error like: “I saved the file but it failed/wasn’t there/disappeared”. Setting an exception in the antivirus program seems to resolve this. I suspect there may be other filenames which get special attention from antivirus programs: for example, I haven’t yet tried a .sys file; there can be problems with zip files containing ‘forbidden’ filenames.
Anyway, I think it would be useful to have a note in the FAQ for all 3 of these. Maybe some of them could suggest new features, but I don’t think they are really bugs.
Now, the real question: Does anyone else have any stories of finding and fixing problems with syncing ? Problems I might get syncing between windows and linux ?
I have a very nice feeling that Syncthing is really going to make my life a lot easier !