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List: openvswitch-discuss
Subject: [ovs-discuss] Installing VM on KVM hypervisor in Ubuntu 14.04 with OVS bridge
From: gtvrreddy () gmail ! com (Ramana Reddy)
Date: 2015-10-31 7:59:20
Message-ID: CAL2CrsNm_6cJNprms_oWsfwbqZ0q6Bhx_voKc0oXQ3XCMi3oNw () mail ! gmail ! com
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Hi Scott,
After using --network=network:br0 , its working.
Here is the actual command:
$sudo virt-install --connect qemu:///system --force --name VM2 --ram=1024
--vcpus=1 --disk path=/var/lib/libvirt/images/VM2.img,size=8,format=qcow2
--cdrom=/home/ramanar/Downloads/ubuntu-14.04.3-server-amd64.iso --vnc
--os-variant=ubuntutrusty --network=network:br0,model=virtio
Thanks & Regards,
Ramana
On Tue, Oct 6, 2015 at 1:09 AM, Ramana Reddy <gtvrreddy at gmail.com> wrote:
> After modifications also, I got the same error:
> ERROR Error in network device parameters: Unknown network type br0
>
> I am using Ubuntu 14.04 (64-bit) and libvirt 1.2.2 and OVS 2.4.0
>
> May be I will try from scratch and let you know.
>
>
> On Tue, Oct 6, 2015 at 12:56 AM, Scott Lowe <scott.lowe at scottlowe.org>
> wrote:
>
>> Please see my responses inline, prefixed by [SL].
>>
>>
>> Ramana Reddy <gtvrreddy at gmail.com> wrote:
>>
>> > I got the following error after trying this command:
>> >
>> > $sudo virt-install --connect qemu:///system --force --name VM2
>> --ram=1024 --vcpus=1 --disk
>> path=/var/lib/libvirt/images/VM2.img,size=8,format=qcow2
>> --cdrom=/home/ramanar/Downloads/ubuntu-14.04.3-server-amd64.iso --vnc
>> --os-variant=ubuntutrusty --network=br0,model=virtio
>> > ERROR Error in network device parameters: Unknown network type br0
>> >
>> > br0.xml file:
>> > <network>
>> > <name>br0</name>
>> > <forward mode='bridge'/>
>> > <bridge name='br0'/>
>> > <virtualport type='openvswitch'/>
>> > </network>
>> >
>> > Did I miss something.
>>
>>
>> [SL] Try adding a portgroup, like this:
>>
>>
>> <network>
>> <name>br0</name>
>> <forward mode='bridge'/>
>> <bridge name='br0'/>
>> <virtualport type='openvswitch'/>
>> <portgroup name='default' default='yes'>
>> </portgroup>
>> </network>
>>
>> Let me know how that works. I'm using this configuration actively right
>> now on Ubuntu 14.04, KVM, libvirt 1.2.2, and OVS 2.3.2.
>>
>>
>> > On Tue, Oct 6, 2015 at 12:34 AM, Scott Lowe <scott.lowe at scottlowe.org>
>> wrote:
>> > Please see my responses inline, prefixed by [SL].
>> >
>> > Ramana Reddy <gtvrreddy at gmail.com> wrote:
>> >
>> > > Hi Scott,
>> > >
>> > > I followed your blog mentioned in the url. I tried the following
>> steps:
>> > >
>> > > Create a br0.xml file:
>> > > <network>
>> > > <name>br0</name>
>> > > <forward mode='bridge'/>
>> > > <bridge name='br0'/>
>> > > <virtualport type='openvswitch'/>
>> > > </network>
>> > >
>> > > $sudo virsh net-define br0.xml
>> > > Network br0 defined from br0.xml
>> > >
>> > > $sudo virsh net-start br0
>> > > Network br0 started
>> > >
>> > > $sudo virsh net-list --all
>> > > Name State Autostart Persistent
>> > > ----------------------------------------------------------
>> > > br0 active no yes
>> > >
>> > > $sudo qemu-img create -f qcow2 /var/lib/libvirt/images/VM2.img 8G
>> > > Formatting '/var/lib/libvirt/images/VM2.img', fmt=qcow2
>> size=8589934592 encryption=off cluster_size=65536 lazy_refcounts=off
>> > >
>> > > $sudo virt-install --connect qemu:///system --force --name VM2
>> --ram=1024 --vcpus=1 --disk
>> path=/var/lib/libvirt/images/VM2.img,size=8,format=qcow2
>> --cdrom=/home/ramanar/Downloads/ubuntu-14.04.3-server-amd64.iso --vnc
>> --os-variant=ubuntutrusty --network=bridge:br0,model=virtio
>> > >
>> > > Starting install...
>> > > ERROR Unable to add bridge br0 port vnet0: Operation not supported
>> > > Domain installation does not appear to have been successful.
>> > > If it was, you can restart your domain by running:
>> > > virsh --connect qemu:///system start VM2
>> > >
>> > > $sudo ovs-vsctl show
>> > > 92d0c0b6-bbbb-4f86-aebd-ec4cc33653a3
>> > > Bridge "br0"
>> > > Port "br0"
>> > > Interface "br0"
>> > > type: internal
>> > > Port "eth0"
>> > > Interface "eth0"
>> > >
>> > >
>> > >
>> > > Any idea why this approach is not working.
>> >
>> >
>> > [SL] If you create a libvirt network to "front end" the OVS bridge,
>> then you would no longer use "--network=bridge:br0,model=virtio" but
>> "--network=br0,model=virtio" (specifying the name of the libvirt network
>> that you created).
>> >
>> > Hope this makes sense.
>> >
>> >
>> > > Some how the second method is working fine. I created a VM using NAT,
>> and then modified VM XML file as per instructions mentioned below:
>> > > <interface type='bridge'>
>> > > <mac address='52:54:00:71:b1:b6'/>
>> > > <source bridge='br0'/>
>> > > <virtualport type='openvswitch'/>
>> > > <address type='pci' domain='0x0000' bus='0x00' slot='0x03'
>> function='0x0'/>
>> > > </interface>
>> > >
>> > > This is working now. I tried this one previously, and not working.
>> May be it messed up with some thing!!
>> > >
>> > > Thanks for all your inputs. I thought that I can go with my old setup
>> (ubuntu 12.04 with brcompat module with ovs 1.9.3: it was working well).
>> > >
>> > >
>> > >
>> > >
>> > >
>> > >
>> > > On Mon, Oct 5, 2015 at 9:51 PM, Scott Lowe <scott.lowe at scottlowe.org>
>> wrote:
>> > > Please see my response below.
>> > >
>> > > Ramana Reddy <gtvrreddy at gmail.com> wrote:
>> > >
>> > > > Hi all,
>> > > >
>> > > > I installed a VM in NAT mode using virt-manager and edited the xml
>> file as per the
>> > > > instructions given in this link:
>> > > >
>> > > >
>> http://git.openvswitch.org/cgi-bin/gitweb.cgi?p=openvswitch;a=blob_plain;f=INSTALL.Libvirt;hb=HEAD
>> > > >
>> > > > Basically It tells the following modofications:
>> > > > And change it to something like this:
>> > > >
>> > > > ...
>> > > > <interface type='bridge'>
>> > > > <mac address='52:54:00:71:b1:b6'/>
>> > > > <source bridge='ovsbr'/>
>> > > > <virtualport type='openvswitch'/>
>> > > > <address type='pci' domain='0x0000' bus='0x00' slot='0x03'
>> function='0x0'/>
>> > > > </interface>
>> > > > ...
>> > > >
>> > > > After modifications, I started VM. But its throwing the errors:
>> Unable to complete install: 'Unable to add bridge br0 port vnet0: Operation
>> not supported'
>> > > >
>> > > > I started VM with both virsh start VM and virt-manager, but both
>> are giving the same error.
>> > > >
>> > > > Does any one face the same problem. Please help me in this regards.
>> > >
>> > >
>> > >
>> > > Can you share the actual XML you're using (just the network interface
>> portion is needed), along with the output of "ovs-vsctl show"?
>> > >
>> > > Also, I (personally) find the easiest way to work with
>> libvirt+KVM+OVS is to use a libvirt network wrapped around OVS, as
>> described here:
>> > >
>> > > <
>> http://blog.scottlowe.org/2012/11/07/using-vlans-with-ovs-and-libvirt/>
>> > >
>> > > --
>> > > Scott
>>
>>
>>
>
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