On 01/15/15 at 01:41pm, Joe Stringer wrote: > I'm running OVS master (afc3987) with the net-next kernel module > (4e7a84b), and if I run ovs-dpctl I sometimes get the following error: > > dpif|WARN|failed to enumerate system datapaths: Protocol error > > I made some local changes to OVS lib/netlink* to get a little more > useful information; it seems to be coming from the netlink > deserialization for getting the vport genetlink family from the > kernel. The error is that OVS userspace expects to see another > 20 bytes beyond what it is given. I haven't had a chance to really > dig into this yet. > > Problem is intermittent, but seems to happen more reliably when the > kmod was recently loaded. > > I thought it may be related to the recent vxlan changes, but it goes > back at least as far as the PACKET_ATTR_PROBE changes (1ba3980), and > likely further back than that. Sending out this message in case it > sounds familiar to anyone.
Couldn't trigger it myself so far. A neat way to trace Netlink messages and pretty print them to stderr is to run ovs-switchd with nltrace: https://github.com/socketpair/nltrace _______________________________________________ dev mailing list dev@openvswitch.org http://openvswitch.org/mailman/listinfo/dev
