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  5. Troubleshooting Ping Acknowledgment Did Not Arrive in Time or Initial Packet Crossed Messages

Troubleshooting Ping Acknowledgment Did Not Arrive in Time or Initial Packet Crossed Messages

This article will help you tune DRBD® when you’re seeing continual disconnections across busy or low throughput links.

If you see these messages in the logs:

May 26 13:54:07 node-0 kernel: drbd r0: initial packet S crossed

or

May 26 13:54:07 node-0 kernel: drbd r0: PingAck did not arrive in time.

…or if DRBD continuously disconnects after successfully connecting for a short time, you can try adding the following to the net section of the affected resource:

net {
  timeout 90;
  ping-timeout 20;
  ping-int 15;
  connect-int 10;
}

If the problem persists, consult the drbd.conf man page for more details about each section and tune them accordingly, or ask your network administrator to verify that the network is healthy and is performing as well as should be expected.

Reviewed 2020/12/07 – DGT