Got it. My mis-understanding, i thought "all datapaths" refer to all existing datapaths which are created by ./ovs-dpctl add-dp dpx command. No, it doesn't cause any problem for me.
Thanks 2011/2/4 Ben Pfaff <b...@nicira.com> > On Fri, Feb 04, 2011 at 03:52:43PM -0800, Yongqiang Liu wrote: > > Now there is an interesting problem with ./ovs-dpctl show command. > > It will silently create many dpx devices in /dev/net. > > This is true. > > > 4. but if there in argument dp0, it has a problem: it creates extra 254 > > devices in /dev/net/ > > # ./ovs-dpctl show > > Do you mean, if there is *no* argument dp0? That is what your example > shows. > > This is because the "show" command without any argument scans for every > possible datapath. There are 256 possible datapaths numbered 0 through > 255, so it has to create a device for each one in order to try to open > it. > > It's not normally a problem. Does it cause a problem for you? > > At any rate, the current "master" branch in OVS does not create any > devices at all. It uses Netlink instead. >
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