to reproduce,
sudo rabbitmqctl list_queues
restart neutron-openvswitch-agent
sudo rabbitmqctl list_queues
q-agent-notifier-dvr-update 0
q-agent-notifier-dvr-update.ubuntu64 0
q-agent-notifier-dvr-update_fanout_714f4e99b33a4a41863406fcc26b9162 0
q-agent-notifier-dvr-update_fanout_a2771eb21e914195b9a6cc3f930b5afb 0
q-agent-notifier-l2population-update 0
q-agent-notifier-l2population-update.ubuntu64 0
q-agent-notifier-l2population-update_fanout_6b2637e57995416ab772259a974315e0 3
q-agent-notifier-l2population-update_fanout_fe9c07aaa8894f55bfb49717f955aa55 0
q-agent-notifier-network-update 0
q-agent-notifier-network-update.ubuntu64 0
q-agent-notifier-network-update_fanout_1ae903109fe844a39c925e49d5f06498 0
q-agent-notifier-network-update_fanout_8c15bef355c645e58226a9b98efe3f28 0
q-agent-notifier-port-delete 0
q-agent-notifier-port-delete.ubuntu64 0
q-agent-notifier-port-delete_fanout_cd794c4456cc4bedb7993f5d32f0b1b9 0
q-agent-notifier-port-delete_fanout_f09ffae3b0fa48c882eddd59baae2169 0
q-agent-notifier-port-update 0
q-agent-notifier-port-update.ubuntu64 0
q-agent-notifier-port-update_fanout_776b9b5b1d0244fc8ddc0a1e309d9ab2 0
q-agent-notifier-port-update_fanout_f3345013434545fd9b72b7f54a5c9818 0
q-agent-notifier-security_group-update 0
q-agent-notifier-security_group-update.ubuntu64 0
q-agent-notifier-security_group-update_fanout_b5421c8ae5e94c318502ee8fbc62852d 0
q-agent-notifier-security_group-update_fanout_f4d73a80c9a9444c8a9899cbda3e71ed 0
q-agent-notifier-tunnel-delete 0
q-agent-notifier-tunnel-delete.ubuntu64 0
q-agent-notifier-tunnel-delete_fanout_743b58241f6243c0a776a0dbf58da652 0
q-agent-notifier-tunnel-delete_fanout_ddb8fad952b348a8bf12bc5c741d0a25 0
q-agent-notifier-tunnel-update 0
q-agent-notifier-tunnel-update.ubuntu64 0
q-agent-notifier-tunnel-update_fanout_1e0b0f7ca63f404ba5f41def9d12f00d 0
q-agent-notifier-tunnel-update_fanout_e86e9b073ec74766b9e755439827badc 1
As far as I undertand, the unused queues will go away, as soon as the consumer is processed as disconnected by rabbitmq, it's an AMQP feature.
If that's not working, it's not neutron fault, but rabbitmq as far as I understand.