[ovs-discuss] c

[Charlie Li]

ovs-vsctl: cannot create a bridge named br0 because a bridge named br0
already exists


On Fri, Jul 1, 2016 at 5:22 PM, Ben Pfaff <blp at ovn.org> wrote:

> If you hit control+C and run the ovs-vsctl command again, what happens?
>
> On Fri, Jul 01, 2016 at 05:06:27PM -0500, Charlie Li wrote:
> > I don't think so - "ps -ef" shows the following processes
> >
> > root      1458     1  0 16:17 ?        00:00:00 ./ovsdb-server
> > --remote=punix:/usr/local/var/run/openvswitch/db.sock
> --remote=db:Open_vSw
> > root      1464     1  0 16:18 ?        00:00:09 ./ovs-vswitchd --dpdk -c
> > 0x1 -n 4 -- unix:/usr/local/var/run/openvswitch/db.sock --pidfil
> > root      1468  1332  0 16:19 pts/0    00:00:00 sudo ./ovs-vsctl add-br
> br0
> > -- set bridge br0 datapath_type=netdev
> > root      1469  1468  0 16:19 pts/0    00:00:00 ./ovs-vsctl add-br br0 --
> > set bridge br0 datapath_type=netdev
> >
> >
> > On Fri, Jul 1, 2016 at 4:38 PM, Ben Pfaff <blp at ovn.org> wrote:
> >
> > > Does ovs-vswitchd die when you run that?
> > >
> > > On Fri, Jul 01, 2016 at 04:24:15PM -0500, Charlie Li wrote:
> > > > If I don't re-build DPDK and OVS, the following command will hang
> > > >
> > > > sudo ./ovs-vsctl add-br br0 -- set bridge br0 datapath_type=netdev
> > > >
> > > > Looks like Bala reported the same issue (not sure if it is caused by
> the
> > > > same reason - not re-building OVS/DPDK)
> > > >
> > > > On Fri, Jul 1, 2016 at 3:21 PM, Ben Pfaff <blp at ovn.org> wrote:
> > > >
> > > > > On Fri, Jul 01, 2016 at 01:57:38PM -0500, Charlie Li wrote:
> > > > > > By now I am successful in running openvswitch-2.5.0 with
> DPDK-2.2.0
> > > by
> > > > > > following "INSTALL.DPDK.md <http://install.dpdk.md/>".
> > > > > >
> > > > > > I understand that I have to build DPDK and OVS for the very first
> > > time.
> > > > > >
> > > > > > # Build DPDK
> > > > > > cd $DPDK_DIR
> > > > > > make install T=x86_64-native-linuxapp-gcc
> > > > > >
> > > > > > # Configure & build OVS
> > > > > > cd $OVS_DIR
> > > > > > ./boot.sh
> > > > > > ./configure --with-dpdk=$DPDK_BUILD/
> > > > > > make CFLAGS='-O3 -march=native'
> > > > > >
> > > > > > But why do I have to build DPDK and OVS every time to run
> OVS-DPDK?
> > > > >
> > > > > You don't.  This doesn't make any sense.
> > > > >
> > > > > If you don't re-build OVS after you reboot, what happens?
> > > > >
> > >
>
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