Troubleshoot multipath configuration issues by checking daemon status, "queue_if_no_path" feature problems, and the multipathd interactive console for diagnostics.

The following issues may result in a slow or non-functioning multipath configuration:

The multipath daemon is not running

If you find you have trouble implementing a multipath configuration, ensure that the multipathd daemon is running.

Issues with queue_if_no_path feature

If a multipath device is configured with the "1 queue_if_no_path" option, any process issuing I/O will hang. It remains hung until one or more paths are restored.