I have now gotten all three of the machines that I want to be synced talking to each other and MOSTLY doing the right thing, or so it appears…
However I’m still having Out of Sync item problems… The third machine “Bill-box” is a fairly new machine (for me, I got it as cruft, but had to put a brand new HD in it, so effectively blank), with a Debian Buster install, KDE, Firefox and a few other packages, but I hadn’t done any major data transfers or other work on it.
As I’m entering this, T540 says it is up to date with both Bill-Box and Coolbox. Coolbox says it is up to date with T540, but has 254 items that are NOT in sync w/ Bill-Box… Unfortunately I am not in the same location as Bill-Box at this time, so I can’t see what it says for state.
All of the OOS items are in either ~/Downloads, or ~/Music, and it appears that all are files. They are in different subdirectories of those two, sometimes multiple levels, and the OOS items in any given subdir are a subset of the files that are in that subdir… I.e ~/Music/[artist]/[album]/ might have 15 songs, but only 3 or 4 are shown as OOS.
I have the machines set up as a mesh, where each machine has the other two as remote devices… I based this in part on the forum thread https://forum.syncthing.net/t/best-multi-devices-sync-config/13449/4
It seems that there is a logic problem if A = B, and A = C, but B =/= C 
One of the remaining things I need to figure out is that all of the machines go to sleep when I’m not using them, and it appears they have trouble syncing when they are asleep… It seems nice and “green” to have unused machines using less power, but I need to figure out how to keep them synced when what I am doing is unlikely to have more than one awake at any given time… Possibly setting up a cron job?
I also need to figure out how to keep all the software programs matched, and share some of the data files on things like my calendars and firefox, but that is a separate issue, I’m probably going to have to set up some individual sharing for those items.
ex-Gooserider