[ovs-discuss] [question] ovs-vsctl command

Soyoung Jeong jeong.soyoung at gmail.com
Tue Dec 24 04:56:41 UTC 2013


Hello,
I'm testing ovs command in citrix xenserver 6.0.2, and I found the
following command executed when creating vlan object (with vlan tag 1000 on
the eth2) in xenserver:

[root at nclcst301 debug]# ovsdb-tool show-log /etc/openvswitch/conf.db
.....
record 714: 2013-12-20 17:09:02 "ovs-vsctl: /usr/bin/ovs-vsctl --timeout=20
-- --with-iface --if-exists del-port eth2 -- --may-exist add-br xenbr2 --
--may-exist add-port xenbr2 eth2 -- set Bridge xenbr2
"other-config:hwaddr=\"98:4b:e1:67:3d:ec\"" -- set Bridge xenbr2
fail_mode=standalone -- remove Bridge xenbr2 other_config disable-in-band
-- br-set-external-id xenbr2 xs-network-uuids
af7a9da8-ad61-52f5-3755-0fc755964e80;14c2e3a6-d154-0d23-d91d-3fcc6f100f8e;4b93be58-72f8-7867-fbe2-6d3e7fc1cf8d;4580b69a-7e78-19ae-ad5a-bad3419c3543
-- --if-exists del-br xapi10 -- --may-exist add-br xapi10 xenbr2 1000 --
br-set-external-id xapi10 xs-network-uuids
af7a9da8-ad61-52f5-3755-0fc755964e80;14c2e3a6-d154-0d23-d91d-3fcc6f100f8e;4b93be58-72f8-7867-fbe2-6d3e7fc1cf8d;4580b69a-7e78-19ae-ad5a-bad3419c3543
-- set Interface xapi10 "MAC=\"98:4b:e1:67:3d:ec\"""
.....

As far as I know, the above command disconnects eth2 at first (--if-exists
del-port eth2) .. If it's true, can packet loss happen if other VMs are
connected to the eth2 for a while?

Thank you
-- 
Jeong,Soyoung
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