I'm using OVS v3.1 + OVN v22.12. Both Geneve and VXLAN have similar behavior.
Ilya Maximets <i.maxim...@ovn.org> 于2023年2月22日周三 03:53写道： > On 2/16/23 02:28, 张祖建 via discuss wrote: > > Hi all, > > I'm investigating packet drop during ovs restart/upgrade and found that > the > > Gevene interface genev_sys_6082 was deleted and recreated during > ovs-vswitchd > > starts up: > > > > > > root@node1:/root# ip -c a show genev_sys_6081 > > 17: genev_sys_6081: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 65000 qdisc > noqueue master ovs-system state UNKNOWN group default qlen 1000 > > link/ether fa:1e:c7:a8:da:49 brd ff:ff:ff:ff:ff:ff > > root@node1:/root# ip monitor dev genev_sys_6081 > > 17: genev_sys_6081: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 65000 qdisc > noqueue state UNKNOWN group default > > link/ether fa:1e:c7:a8:da:49 brd ff:ff:ff:ff:ff:ff > > 17: genev_sys_6081: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 65000 qdisc > noqueue state UNKNOWN group default > > link/ether fa:1e:c7:a8:da:49 brd ff:ff:ff:ff:ff:ff > > 17: genev_sys_6081: <BROADCAST,MULTICAST> mtu 65000 qdisc noqueue state > DOWN group default > > link/ether fa:1e:c7:a8:da:49 brd ff:ff:ff:ff:ff:ff > > Deleted 17: genev_sys_6081: <BROADCAST,MULTICAST> mtu 65000 qdisc noop > state DOWN group default > > link/ether fa:1e:c7:a8:da:49 brd ff:ff:ff:ff:ff:ff > > ^C > > root@node1:/root# ip -c a show genev_sys_6081 > > 18: genev_sys_6081: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 65000 qdisc > noqueue master ovs-system state UNKNOWN group default qlen 1000 > > link/ether 7a:b4:13:b8:c0:4f brd ff:ff:ff:ff:ff:ff > > > > > > Is this behavior by design? How can I avoid tunnel interface recreation? > > Hi. > > No, that should not happen in general. Ports should not be deleted > and re-created on restart. > > What version of OVS you have? There was a bug in v2.15.0 that could > cause this kind of behavior. > > Best regards, Ilya Maximets. >
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