[Lxc-users] problem with networking phys

[Eric Brower]

You don't mention what kernel you are using, but this is probably due
to the maturity of your kernel; for example, the RHEL6 2.6.32 kernel
does not allow movement of physical devices into a network namespace.
As a test, try creating a VLAN device on your eth3, and configure your
container to use that device.

As a workaround, you could leave eth3 in the default namespace, attach
it to a bridge in the default namespace, create a veth pair, attach
one of the veths to your bridge, and push the other into your
container.  A bit of work and overhead, but otherwise you may be
looking at a kernel upgrade.

E

On Sat, Feb 5, 2011 at 6:32 AM, pmenier <patrick at pmenier.dynalias.net> wrote:
> Hello all
>
> Using lxc since many months, i decided to add a network card on my host. I
> thought it could be assigned to the lxc-guests i will create later.
>
> But ... it doesn't work.
>
> when i try to start the container i get this error:
>
> root at p733:/opt/lxc/vm1733# lxc-start -n vm1733 -d -o /tmp/outvm1733
>
> root at p733:/opt/lxc/vm1733# cat /tmp/outvm1733
>       lxc-start 1296908902.660 ERROR    lxc_conf - failed to move 'eth3' to the
> container : Invalid argument
>       lxc-start 1296908902.660 ERROR    lxc_start - failed to create the
> configured network
>       lxc-start 1296908902.660 ERROR    lxc_start - failed to spawn 'vm1733'
>
> eth3 exists on the hosts (3 because i tried with another card before)
>
> Here the guest config:
>
> root at p733:/opt/lxc/vm1733# cat config
> # Container with network virtualized using a physical network device with name
> lxc.utsname = vm1733
> lxc.network.type = phys
> lxc.network.flags = up
> lxc.network.link = eth3
> lxc.network.name = eth0
> #lxc.network.hwaddr = 01:50:fc:45:6e:35
> lxc.network.ipv4 = 192.168.0.69/24
>
> This guest works fine with config veth (lxc.network.link= br0)  but i should
> like to understand...
>
> Thanks
> Patrick
>
>
> ------------------------------------------------------------------------------
> The modern datacenter depends on network connectivity to access resources
> and provide services. The best practices for maximizing a physical server's
> connectivity to a physical network are well understood - see how these
> rules translate into the virtual world?
> http://p.sf.net/sfu/oracle-sfdevnlfb
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>



-- 
E