[Devel] Re: lxc-start fails on clone(child_stack=0, flags=CLONE_NEWNS|0x6c000000|SIGCHLD) = -1 EINVAL (Invalid argument)

[Daniel Lezcano]

Miguel F Mascarenhas Sousa Filipe wrote:
> On Fri, Jun 5, 2009 at 2:59 PM, Serge E. Hallyn<serue at us.ibm.com> wrote:
>   
>> Quoting Miguel F Mascarenhas Sousa Filipe (miguel.filipe at gmail.com):
>>     
>>> Hello,
>>>
>>> I'm trying to play with lxc, but I'm unable to start a container
>>> created with lxc-debian in two diferent linux systems I have.
>>>
>>> linux-2.6.29-gentoo-r5 x86_64.
>>> linux-2.6.28-11-generic ubuntu x86_64.
>>>       
>> I suspect the problem is that your kernel (especially the ubuntu
>> one) is compiled without CONFIG_NET_NS=y.
>>
>>     
>>> clone(child_stack=0, flags=CLONE_NEWNS|0x6c000000|SIGCHLD) = -1 EINVAL
>>>       
>> You are sending clone the flags LCON_NEWNS, CLONE_NEWNET, CLONE_NEWPID,
>> CLONE_NEWUTS and CLONE_NEWIPC.  Of those, CLONE_NEWNET is the newest
>> one.
>>
>> Are you free to recompile your kernel?
>>     
>
> On my devel/test boxes yes, but I would like to use containers on
> servers where I'm not going to have that "freedom".
>
> I probably have to enable this:
>
> User namespace: disabled
>   
You don't need this option.

> Network namespace: disabled
> Multiple /dev/pts instances: disabled
>
> Right?
>   
Correct :)

Maybe you can ask the gentoo kernel mailing list if they can enable 
these options ?

For ubuntu, we have to wait for the 2.6.29 kernel version for the 
network namespace.

BTW, I tried a fedora 11 beta and all the options are turned on.

  -- Daniel



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