DRBD network connection congestion handling design and implementation method and system

The invention relates to the technical field of data synchronization, in particular to a DRBD network connection congestion handling design and implementation method and system. Event collection: monitoring and collecting events, and transferring the monitored events to a disconnection decision maker; concerned resources are filtered, and the filtered resources are transferred to a disconnection decision maker; filtering a blockage event; congestions are decided and processed; carrying out reconnection decision and processing; the DRBD network connection congestion handling design and implementation method and system have the advantages that under the condition that a DRBD copy link is congested, congestion events can be automatically and rapidly detected, DRBD connection is triggered to be disconnected through event driving and a necessary decision algorithm, and service availability is guaranteed preferentially. And after the copied link is recovered, automatically establishing the DRBD connection, and sync