[Lxc-users] Bonding inside LXC container

[Jäkel, Guido]

Dear Yao,

I have no experience with the macvlan device because I even can't find a clear documentation and I wonder if there is one her to give an abstract and howto for it. In my diagram I meant to use lxc.network.type = phys to directly reach through the NIC device.

Reading https://www.kernel.org/doc/Documentation/networking/bonding.txt i got the notion that the bonding driver is strongly related to the physical network drivers. I don't think that it will work with virtual devices like macvlan or even veth as basic devices, but I may be wrong with this.

>I'm not sure but I doubt it may be Network namespace or something similar that brings about this problem.
I was able to google out a thread "Bonding simplifications and netns support" on the kernel.org mailing list. It's from end of 2009 but I think it's irrelevant nowadays.




>-----Original Message-----
>From: wang yao [mailto:yaowang2014 at gmail.com]
>Sent: Monday, November 18, 2013 5:09 AM
>To: Jäkel, Guido
>Cc: lxc-users at lists.sourceforge.net
>Subject: Re: [Lxc-users] Bonding inside LXC container
>
>Hi Jake,
>
>First of all, thank you for your reply and I am very sorry for such a late response.
>
>Just as you said, I had ever tried the bonding style like this:
>
>        eth0--+--bond0--[veth]--eth0
>        eth1--/
>
>But when I used mode=6(alb) of bonding following this way, there is 80% packet loss in the container, I must patch the kernel to the
>problem.
>
>On the other hand, my current approach:
>
>        eth0--[phys]--eth0--+--bond0
>        eth1--[phys]--eth1--/
>
>My lxc configuration like this (Networking part) :
>
># Networking
>lxc.network.type = macvlan
>lxc.network.flags = up
>lxc.network.link = eth0
>lxc.network.name = eth0
>lxc.network.ipv4 = 172.19.8.168/16
>lxc.network.mtu = 1500
>lxc.network.hwaddr = fe:67:f5:42:40:14
>
>lxc.network.type = macvlan
>lxc.network.flags = up
>lxc.network.link = eth1
>lxc.network.name = eth1
>lxc.network.ipv4 = 172.19.8.169/16
>lxc.network.mtu = 1500
>lxc.network.hwaddr = fe:67:f5:42:40:15
>...
>
>I did the bonding in the container, the bonding configuration is the same as what I did before on the host.  When I started bonding device
>in the container, this message came out:
>"Bringing up interface bond0: bonding device bond0 does not seem to be present, delaying initialization."
>
>I'm not sure but I doubt it may be Network namespace or something similar that brings about this problem.
>
>What's your idea?
>
>Regards,
>Yao
>
>
>2013/11/15 Jäkel, Guido <G.Jaekel at dnb.de>
>
>
>	Dear Yao,
>
>	as I understand, you want to bound two physical interfaces of the host hardware to and use the bond inside a container.
>
>	        eth0--[phys]--eth0--+--bond0
>	        eth1--[phys]--eth1--/
>
>	Because no other -- neither host nor another container -- may use one of NICs in addition, I would suggest to put the virtual
>bonding interface on the host and reach through the bound into the container via a veth. To me it's seems to be a better separation of
>concerns.
>
>	        eth0--+--bond0--[veth]--eth0
>	        eth1--/
>
>	Following this way, you may also share the bound to more than one container by putting a virtual bridge between the virtual
>bonding interface and the virtual Ethernet adapters of the Containers.
>
>
>	By the way, I don't see a clear reason why your current approach may fail. May you please present you configuration here?
>
>
>	Greetings
>
>	Guido
>
>
>
>	>-----Original Message-----
>	>From: wang yao [mailto:yaowang2014 at gmail.com]
>	>Sent: Friday, November 15, 2013 4:33 AM
>	>To: lxc-users at lists.sourceforge.net
>	>Subject: [Lxc-users] Bonding inside LXC container
>	>
>	>Hi all,
>	>I tried to bond two NICs (eth0 and eth1) in the container, but when I finished the bonding configuration (I think my configuraion
>is correct)
>	>and started bonding device inside container, this message came out:
>	>"Bringing up interface bond0:  bonding device bond0 does not seem to be present, delaying initialization."
>	>So I want to know if LXC can't support the way of bonding configuration as I did, or I can do something to make this achieved.
>	>I am glad to talk about "Bonding and LXC" with someone who has interest in it.
>	>Regards,
>	>Yao
>
>