Suppose I have a SyncThing folder synced between Server A, Backup Server B, and my Desktop C.
Suppose Backup Server B runs out of disk space. I never log into Server B, and it’s on a different hosting provider to everything else, and I basically would have no way in the normal course of things of noticing that it had stopped syncing.
I would be really nice if, in the “Remote Devices” list on my Desktop, Backup Server B showed up with an Error status, instead of just Up to date / Syncing / Disconnected. Then I’d know that it needed attention, and I either need to provision a larger HDD or delete some backups.
Of course, there are server monitoring tools out there that will do this for me, but that’s quite a lot of overhead and effort and learning curve to go through… and I’d have though that having a server being able to report its state as “Error” to its peers would be useful in other contexts too.