[pve-devel] new bridge code doesn't work with redhat kernel

[Alexandre DERUMIER]

Ok, to get my setup work with /etc/network/interfaces, the only way is to use pre-up,post-up manually.


old config
----------
auto vmbr0
iface vmbr0 inet static
       address 10.3.94.31
       netmask 255.255.255.0
       gateway 10.3.94.1
       bridge_ports bond0.94
       bridge_stp off
       bridge_fd 0


auto vmbr1
iface vmbr1 inet manual
        bridge_ports bond0
        bridge_stp off
        bridge_fd 0



new config
-----------

auto vmbr1v94
iface vmbr1v94 inet static
        address 10.3.94.31
        netmask 255.255.255.0
        gateway 10.3.94.1
        pre-up brctl addbr vmbr1v94
        pre-up ip link add link vmbr1 name vmbr1.94 type vlan id 94
        pre-up ip link set vmbr1.94 up
        post-up brctl addif vmbr1v94 vmbr1.94


auto vmbr1
iface vmbr1 inet manual
        bridge_ports bond0
        bridge_stp off
        bridge_fd 0



not easy for common user ;)

----- Mail original ----- 

De: "Alexandre DERUMIER" <aderumier at odiso.com> 
À: "Stefan Priebe - Profihost AG" <s.priebe at profihost.ag> 
Cc: pve-devel at pve.proxmox.com 
Envoyé: Jeudi 7 Février 2013 16:43:23 
Objet: Re: [pve-devel] new bridge code doesn't work with redhat kernel 

to get my host admin network working I need to put 
--------------------------------------------------- 
auto vmbr1 
iface vmbr1 inet manual 
bridge_ports bond0 
bridge_stp off 
bridge_fd 0 


auto vmbr1v94 
iface vmbr1v94 inet static 
address 10.3.94.31 
netmask 255.255.255.0 
gateway 10.3.94.1 
bridge_ports vmbr1.94 
bridge_stp off 
bridge_fd 0 

(brige_ports not work, but bridge is created) 

then 

ip link add link vmbr1 name vmbr1.94 type vlan id 94 
ip link set vmbr1.94 up 
brctl addif vmbr1v94 vmbr1.94 



So this give me this working setup 
---------------------------------- 
bond0----vmbr1---vmbr1.94---vmbr1v94 
----vmbr1---vmbr1.X----vmbr1vX---tap qemu 


What is not working is 
---------------------- 
bond0---bond0.94---vmbr0 
---vmbr1---vmbr1.X----vmbr1vX---tap qemu 



Any idea if an updated debian network script exist in wheezy ? 




----- Mail original ----- 

De: "Alexandre DERUMIER" <aderumier at odiso.com> 
À: "Stefan Priebe - Profihost AG" <s.priebe at profihost.ag> 
Cc: pve-devel at pve.proxmox.com 
Envoyé: Jeudi 7 Février 2013 16:27:19 
Objet: Re: [pve-devel] new bridge code doesn't work with redhat kernel 

Ok, I have done more test, It seem that the problem in my setup is my tagged interface in other bridge 


don't work 
----------- 
auto vmbr0 
iface vmbr0 inet static 
address 10.3.94.31 
netmask 255.255.255.0 
gateway 10.3.94.1 
bridge_ports bond0.94 
bridge_stp off 
bridge_fd 0 

auto vmbr1 
iface vmbr1 inet manual 
bridge_ports bond0 
bridge_stp off 
bridge_fd 0 


# brctl show 
bridge name bridge id STP enabled interfaces 
vmbr0 8000.001aa03c98c5 no bond0.94 
vmbr1 8000.001aa03c98c5 no bond0 
vmbr1v95 8000.001aa03c98c5 no tap115i0 
vmbr1.95 

works (remove vmbr0) 
----- 
# brctl show 
bridge name bridge id STP enabled interfaces 
vmbr1 8000.001aa03c98c5 no bond0 
vmbr1v95 8000.001aa03c98c5 no tap115i0 
vmbr1.95 


So we can't mix tagged interfaces and tagged bridges. 
(must be a bug in kernel, as it's work fine with new kernels) 



Any idea how to enslave a vmbr1.X with ip address in /etc/network/interfaces ? 

I had tried 

auto vmbr1 
iface vmbr1 inet manual 
bridge_ports bond0 
bridge_stp off 
bridge_fd 0 

auto vmbr1v94 
iface vmbr1v94 inet static 
address 10.3.94.31 
netmask 255.255.255.0 
gateway 10.3.94.1 
bridge_ports vmbr1.94 
bridge_stp off 
bridge_fd 0 

But It give me 

Ignoring unknown interface vmbr1.94=vmbr1.94. 




Also, I think I'm not the only to use this kind of setup, so proxmox users should be warned before doing the update. 



----- Mail original ----- 

De: "Stefan Priebe - Profihost AG" <s.priebe at profihost.ag> 
À: "Alexandre DERUMIER" <aderumier at odiso.com> 
Cc: pve-devel at pve.proxmox.com 
Envoyé: Jeudi 7 Février 2013 15:59:45 
Objet: Re: [pve-devel] new bridge code doesn't work with redhat kernel 

Hi Alexandre, 

> Does it work for you (vlan on bridge) with redhat kernel ? 
Yes i retested my code with latest PVE Kernel and it works absolutely 
FINE. I can ping all VMs. 

Stefan 

> also, I my setup, I have vmbr0 bridge with interface tagged for host administration 

I believe this is the problem. You should have a BOND and on top of that 
bond one single bridge and on top of that bridge you should create the 
VLAN and not on top of the bond. 

Stefan 
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