Linux taking too long exiting and cleaning up about pairmesh HOT 3 OPEN

C2022-04-06T13:54:24.323+0800  INFO    Got signal and prepare to terminate     {"signal": "interrupt"}
2022-04-06T13:54:24.323+0800    WARN    Client connection transporter terminated        {"addr": "139.198.29.15:2328"}
2022-04-06T13:54:24.323+0800    INFO    Monitoring goroutine finished   {"error": "context canceled"}
2022-04-06T13:54:24.323+0800    INFO    Relay server information updater stopped
2022-04-06T13:54:24.323+0800    INFO    Serve virtual device write goroutine stopped
2022-04-06T13:54:24.323+0800    INFO    Local events monitor stopped
2022-04-06T13:54:24.323+0800    ERROR   Read relay server message failed        {"error": "read tcp 10.28.221.221:47928->139.198.29.15:2328: use of closed network connection"}
2022-04-06T13:54:24.323+0800    ERROR   Close relay server connection failed    {"relay_server_id": 1490510868985679872}
2022-04-06T13:54:24.323+0800    INFO    The relay manager is stopped
2022-04-06T13:54:24.323+0800    WARN    Client connection transporter terminated        {"addr": "139.198.171.210:2328"}
2022-04-06T13:54:24.323+0800    ERROR   Read relay server message failed        {"error": "read tcp 10.28.221.221:42822->139.198.171.210:2328: use of closed network connection"}

^C

2022-04-06T13:58:10.071+0800    INFO    Serve virtual device read goroutine stopped
2022-04-06T13:58:10.071+0800    INFO    The Driver is powered off, see you again
2022-04-06T13:58:10.071+0800    INFO    Driver is terminated successfully