I agree that LB agent should not do the nova's work, which is all that is relevant to tap + qbr plumbing. If the agent loop will be fired right in the middle of nova plugging plugging tap into qbr, it may introduce the race condition you describe.
I agree that LB agent should not do the nova's work, which is all that is relevant to tap + qbr plumbing. If the agent loop will be fired right in the middle of nova plugging plugging tap into qbr, it may introduce the race condition you describe.