PBS Sync timeout - connection reset

[flames]

Hello,
PBS 3.4.3 on both sides. WAN connection is super stable 1Gbps.
Source PBS reports: "Timestamp: TASK ERROR: connection error: connection reset: connection reset"
Destination PBS (the one with the sync job) reports after a while: "Timestamp: sync group vm/405 failed - timed out" for every sync-group"
Both sides were perfectly syncing wit PBS 3.3.3
this errors happen on every sync-group now.
already tried to set timeouts higher. source just drops connection w/o reason. destination gets timeout after a few minutes after that and continues with next sync-group, until same error.
Any ideas?
Thanks in advance

 

[Chris]

HI,

already tried to set timeouts higher.

which timeouts are you referring to here?

destination gets timeout after a few minutes after that and continues with next sync-group, until same error.
Any ideas?

Is your source datastore otherwise operational? do you get any errors in the systemd journal of the source PBS host?