I have recently switched to syncthing from resilio-sync. I have managed to get it working fine easily enough across my Android phone, Windows PC, Linux PC, and ancient work PC. However, I am experiencing issues with it on my Raspberry Pi 3.
I have installed syncthing on a clean installation of Raspbian Lite and the syncthing package I installed is from the Raspbian repositories. The folders it syncs are webdav mounts shared from a NAS. I made the mistake three years ago of buying a cheap entry-level NAS that can’t handle running any additional software on it despite the claims of the manufacturer. Hence, I use a raspberry pi to gain functionality such as file syncing.
I managed to get it installed, make GUI accessible remotely, add devices, and setup folders fine. However, 4-8 seconds after it makes a connection it disconnects to then reconnect 40-90 seconds later and repeat ad infinitum. The memory and CPU load when syncthing is running isn’t more than the pi can handle. Around 40% CPU whilst starting up, and ranging up to 70% when first connected before crashing. RAM tends range from 80mb - 110mb.
Running syncthing as a command, it looks like when it disconnects is from syncthing crashing and then restarting. I had to turn on unlimited scrollback in konsole to capture the full output when it crashes. The main part is:
[Y6SNQ] 14:50:20 INFO: Established secure connection to [redacted] at 192.168.0.28:22000-192.168.0.250:44338 (tcp-server) (TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384) [Y6SNQ] 14:50:20 INFO: Device [redacted] client is "syncthing v0.14.46" named "Insomnia" [Y6SNQ] 14:50:21 INFO: Failed to exchange Hello messages with [redacted] ([fe80::77f3:a46c:2217:93a0%eth0]:35790): EOF runtime/cgo: pthread_create failed: Resource temporarily unavailable SIGABRT: abort PC=0x76d8645c m=2
There is then a 5,203 lines of further output of highly repetitive messages that I have uploaded to a pastebin.