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      Troubleshooting a Hung DRBD Proxy

      Instructions in this article can help you troubleshoot when DRBD Proxy is not responding to drbd-proxy-ctl commands, or is not stopping gracefully, or similar symptoms.

      It might not be something that you or the support team can resolve right away, but some helpful actions that you can take and information that you can gather while DRBD Proxy is in this state might be:

      • Run an strace on the running processes, using process ID (PID) values, on both nodes
      • Run ss -tuna and use grep to filter the results for the DRBD® ports. It’s the send and receive buffer information which is useful to gather here.
      • Run cat /proc/<pid>/stack
      • Run stree | grep drbd-proxy. This should show how many DRBD Proxy threads are running.

      Reviewed 2020/12/01 – DGT