Hi,
perhaps I can drop in my couple of line, how I setup a VM with qemu-kvm:
( most things I try to do in userland, need a couple of sudo's, though)
Following is called before qemu-kvm is started ( called via pre_if.sh):
IF=<argv[0]>
sudo /sbin/ip tuntap add dev ${IF} mode tap user fcms
then, the same script is called from qemu itself, and does the following
( add_if_sh):
BRIDGE=<bridge-name>
VTAG=<vlantag>
sudo /sbin/ifconfig ${IF} 0.0.0.0 promisc up
sudo /usr/local/bin/ovs-vsctl add-port ${BRIDGE} ${IF} ${VTAG}
other_config:stp-enable=false
and same script called via "downscript.sh" to deconfigure port:
sudo /sbin/ip tuntap del dev ${IF} mode tap
sudo /sbin/ifconfig ${IF} down
sudo /usr/local/bin/ovs-vsctl del-port ${IF}
qemu is called for network-setup similar to the following:
qemu-system-x86_64 -enable-kvm <...a couple of thousands of
parameters...> -device rtl8139,mac=00:F1:70:00:37:00,netdev=vlan0d0
-netdev
type=tap,id=vlan0d0,ifname=tap101i0d0,script=/etc/fcms/add_if.sh,downscript=/etc/fcms/downscript.sh
<...even more parameters...>
Hope it helps ;)
Oliver.
On 06/12/2012 08:05 AM, Justin Pettit wrote:
On Jun 11, 2012, at 4:30 PM, Abhishek Chanda wrote:
I am trying to setup a topology similar to the one explained here:
http://openvswitch.org/support/config-cookbooks/vlan-configuration-cookbook/
The only difference being, for me, all VMs are in one VLAN. Once I have booted
the VMs, I do not see the TAP devices. So, do I have to create a TAP device on
the host manually and connect all VMs on that host to the device (instead of
the network card)?
How you get devices into the VM is really specific to your hypervisor and not
specific to Open vSwitch. I don't run VirtualBox, but that approach sounds
reasonable to me. In fact, here's a blog describing how to configure OVS with
VirtualBox
http://golanzakai.blogspot.com/2012/01/openvswitch-with-virtualbox.html
--Justin
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