vmbr0 is not up

[Adam Cheung]

Hi,

I've change my setup from linux bridge to openvswitch, everything works flawlessly.
But I found that vmbr0 is not up in cli nor web interface. Why?
Thanks in advance!

Spoiler: Output of ovs-vsctl show

root@pve5:~# ovs-vsctl show
e55e4552-ce67-4b02-b5ae-f4efc1a8c0f2
Bridge "vmbr0"
Port "tap150i0"
Interface "tap150i0"
Port "bond0"
Interface "eth0"
Interface "eth1"
Interface "eth3"
Interface "eth2"
Port "vlan1"
Interface "vlan1"
type: internal
Port "tap150i1"
Interface "tap150i1"
Port "veth151i0"
tag: 3
Interface "veth151i0"
Port "veth111i0"
Interface "veth111i0"
Port "fwln114o0"
Interface "fwln114o0"
type: internal
Port "tap113i1"
Interface "tap113i1"
Port "vmbr0"
Interface "vmbr0"
type: internal
Port "fwln998o0"
tag: 3
Interface "fwln998o0"
type: internal
Port "veth183i0"
tag: 2
Interface "veth183i0"
Port "veth182i0"
tag: 2
Interface "veth182i0"
Port "tap190i0"
tag: 2
Interface "tap190i0"
Port "veth112i0"
tag: 2
Interface "veth112i0"
Port "veth105i0"
Interface "veth105i0"
Port "tap115i0"
tag: 2
Interface "tap115i0"
Port "tap208i0"
tag: 2
Interface "tap208i0"
ovs_version: "2.6.0"

Spoiler: Output of pveversion --verbose

root@pve5:~# pveversion --verbose
proxmox-ve: 4.4-79 (running kernel: 4.4.35-2-pve)
pve-manager: 4.4-12 (running version: 4.4-12/e71b7a74)
pve-kernel-4.4.6-1-pve: 4.4.6-48
pve-kernel-4.2.6-1-pve: 4.2.6-36
pve-kernel-4.4.35-2-pve: 4.4.35-79
pve-kernel-4.2.8-1-pve: 4.2.8-41
lvm2: 2.02.116-pve3
corosync-pve: 2.4.0-1
libqb0: 1.0-1
pve-cluster: 4.0-48
qemu-server: 4.0-108
pve-firmware: 1.1-10
libpve-common-perl: 4.0-91
libpve-access-control: 4.0-23
libpve-storage-perl: 4.0-73
pve-libspice-server1: 0.12.8-1
vncterm: 1.2-1
pve-docs: 4.4-3
pve-qemu-kvm: 2.7.1-1
pve-container: 1.0-93
pve-firewall: 2.0-33
pve-ha-manager: 1.0-40
ksm-control-daemon: 1.2-1
glusterfs-client: 3.5.2-2+deb8u3
lxc-pve: 2.0.7-1
lxcfs: 2.0.6-pve1
criu: 1.6.0-1
novnc-pve: 0.5-8
smartmontools: 6.5+svn4324-1~pve80
zfsutils: 0.6.5.8-pve14~bpo80
openvswitch-switch: 2.6.0-2

Spoiler: /etc/network/interfaces

# network interface settings; autogenerated
# Please do NOT modify this file directly, unless you know what
# you're doing.
#
# If you want to manage part of the network configuration manually,
# please utilize the 'source' or 'source-directory' directives to do
# so.
# PVE will preserve these directives, but will NOT its network
# configuration from sourced files, so do not attempt to move any of
# the PVE managed interfaces into external files!

auto lo
iface lo inet loopback

iface eth0 inet manual

iface eth1 inet manual

iface eth2 inet manual

iface eth3 inet manual

allow-vmbr0 bond0
iface bond0 inet manual
ovs_bonds eth0 eth1 eth2 eth3
ovs_type OVSBond
ovs_bridge vmbr0
ovs_options lacp=active bond_mode=balance-tcp vlan_mode=native-untagged

auto vmbr0
iface vmbr0 inet manual
ovs_type OVSBridge
ovs_ports bond0 vlan1

allow-vmbr0 vlan1
iface vlan1 inet static
address 192.168.x.x
netmask 255.255.255.0
gateway 192.168.x.x
ovs_type OVSIntPort
ovs_bridge vmbr0

Spoiler: Output of ifconfig vmbr0

root@pve5:/etc/network# ifconfig vmbr0
vmbr0 Link encap:Ethernet HWaddr b8:ca:3a:f5:xx:xx
BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:879994 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)

Picture of Web Interface
https://drive.google.com/open?id=0B2vXTGt0Cnmdbl9GeWdkUkJ6LUE

 

[Richard]

By default an ovs bridge is shown as down when no IP address is assigned to it - but works. You can consider this as (minor) ovs bug, but it does not affect the proper functionality.