Cong Wang wrote: > The problem is that there are some existing applications which use > fixed port number, we don't have chances to change this for them, > thus making them working is desired, so they want to reserve these > port for those applications. > > For example, if I have an appliction which uses port 40000, but > before this application starts, another application gets this port > number by bind() with port 0 (i.e. chosen by kernel), in this case, > that application will fail to start. Again, we don't have any chance > to change the source code of that application. > And there is a utility called "portreserved" (port reserve daemon). http://fedoraproject.org/wiki/Features/Portreserve
But that utility cannot close the race window between "portreserved stops reserving local port numbers" and "applications starts using local port numbers which portreserved was reserving". Thus, I think people want to have port reservation mechanism inside kernel (if it has little impact). -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
