[ovs-discuss] ovs-vsctl: Error detected while setting up 'br0'. See ovs-vswitchd log for details.

Thadeu Lima de Souza Cascardo cascardo at redhat.com
Tue Sep 6 14:35:47 UTC 2016


On Tue, Sep 06, 2016 at 04:32:09PM +0200, Ashish Kurian wrote:
> Dear All,
> 
> Some where I also read that I have to install openvswitch-datapath-source
> and openvswitch-brcompat. Also in another forum read that I have to update
> the database schema. Can you advice if these are necessary and if so, how
> to update the database schema?

As you are using a version of Linux of 4.3 or newer, as you mentioned, there is
no need to install the out-of-tree datapath. Unless you really want it, but I
would guess you don't have any particular reason to use it. Linux 4.3 is recent
enough for OVS use. By the way, why did you downgrade from 4.4?

Cascardo.

> 
> Best Regards,
> Ashish Kurian
> 
> On Tue, Sep 6, 2016 at 4:19 PM, Ashish Kurian <ashishbnv at gmail.com> wrote:
> 
> > Dear All,
> >
> > After the last installation command, the following message is what I am
> > getting.
> >
> > 2016-09-06T14:15:55Z|00003|reconnect|INFO|unix:/usr/
> > local/var/run/openvswitch/db.sock: connecting...
> > 2016-09-06T14:15:55Z|00004|reconnect|INFO|unix:/usr/
> > local/var/run/openvswitch/db.sock: connected
> > 2016-09-06T14:15:55Z|00005|dpif_netlink|WARN|Generic Netlink family
> > 'ovs_datapath' does not exist. The Open vSwitch kernel module is probably
> > not loaded.
> > 2016-09-06T14:15:55Z|00006|dpif|WARN|failed to enumerate system
> > datapaths: No such file or directory
> > 2016-09-06T14:15:55Z|00007|dpif|WARN|failed to create datapath
> > ovs-system: No such file or directory
> > 2016-09-06T14:15:55Z|00008|ofproto_dpif|ERR|failed to open datapath of
> > type system: No such file or directory
> > 2016-09-06T14:15:55Z|00009|ofproto|ERR|failed to open datapath br0: No
> > such file or directory
> > 2016-09-06T14:15:55Z|00010|bridge|ERR|failed to create bridge br0: No
> > such file or directory
> >
> >
> > Best Regards,
> > Ashish Kurian
> >
> > On Tue, Sep 6, 2016 at 4:05 PM, Thadeu Lima de Souza Cascardo <
> > cascardo at redhat.com> wrote:
> >
> >> On Tue, Sep 06, 2016 at 03:56:49PM +0200, Ashish Kurian wrote:
> >> > Dear All,
> >> >
> >> > I did try the command as "modprobe openvswitch" and it returned nothing.
> >> > But when i tried lsmod | less, I could see openvswitch in the list. Do I
> >> > need to reboot the system after the install?
> >> >
> >>
> >> No, you just need to make sure openvswitch module is loaded. It should be
> >> loaded
> >> by ovs-ctl start, as far as I know.
> >>
> >> Cascardo.
> >>
> >> > Best Regards,
> >> > Ashish Kurian
> >> >
> >> > On Tue, Sep 6, 2016 at 3:47 PM, Thadeu Lima de Souza Cascardo <
> >> > cascardo at redhat.com> wrote:
> >> >
> >> > > On Tue, Sep 06, 2016 at 03:36:50PM +0200, Ashish Kurian wrote:
> >> > > > Dear All,
> >> > > >
> >> > > > modprobe openvswitch gives me nothing
> >> > > >
> >> > >
> >> > > That's not helpful. It either gives you an error, or it succeeds and
> >> you
> >> > > see
> >> > > something with lsmod. dmesg output (the last lines right after running
> >> > > modprobe)
> >> > > might be also helpful. Looking at the appointed file would also help.
> >> > >
> >> > > Please, when asking for help, try to do your part.
> >> > >
> >> > > Thanks.
> >> > > Cascardo.
> >> > >
> >> > > > Best Regards,
> >> > > > Ashish Kurian
> >> > > >
> >> > > > On Tue, Sep 6, 2016 at 3:31 PM, Thadeu Lima de Souza Cascardo <
> >> > > > cascardo at redhat.com> wrote:
> >> > > >
> >> > > > > On Tue, Sep 06, 2016 at 02:52:23PM +0200, Ashish Kurian wrote:
> >> > > > > > Dear Team,
> >> > > > > >
> >> > > > > > I just reinstalled the ovs on my new ubuntu 16 and all the
> >> > > installation
> >> > > > > was
> >> > > > > > successful. I followed the install.md instructions.
> >> > > > > >
> >> > > > > > When I run command /sbin/lsmod I am not able to see openvswitch
> >> in
> >> > > the
> >> > > > > > list. And when I try the command to add a bridge, I get the
> >> error
> >> > > given
> >> > > > > in
> >> > > > > > the subject.
> >> > > > > >
> >> > > > > > When I tried to debug the error, I am not able to locate the
> >> file
> >> > > > > > ovs-vswitchd log.
> >> > > > > >
> >> > > > > > Is it due to some dependency errors or something else?
> >> > > > > >
> >> > > > > > Best Regards,
> >> > > > > > Ashish Kurian
> >> > > > >
> >> > > > > Maybe you didn't change the default paths, and the logs ended up
> >> at
> >> > > > > /usr/local/var/log/openvswitch/ovs-vswitchd.log.
> >> > > > >
> >> > > > > And what about loading the openvswitch module? What modprobe
> >> > > openvswitch
> >> > > > > gives
> >> > > > > you?
> >> > > > >
> >> > > > > Cascardo.
> >> > > > >
> >> > >
> >>
> >
> >



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