[Lxc-users] lxc on Fedora 15

[Ramez Hanna]

On Tue, May 31, 2011 at 2:07 PM, Daniel Lezcano <daniel.lezcano at free.fr>wrote:

> On 05/31/2011 12:33 PM, Ramez Hanna wrote:
>
>> it seems that lxc cannot handle cgroups when capabilities are not all in
>> the
>> same mount
>> it fails now because it cannot write the devices.deny in the cgroup
>> if i comment out all the lxc.cgroup.devices lines in the config of the
>> container then i can actually start it
>>
>> I would think that the way lxc identifies the cgroup mount might be the
>> part
>> that needs patching
>>
>
> Thanks for investigating.
>
> The main problem is lxc is cgroup agnostic, so we should find a solution
> where we don't break that.
>
> Maybe one solution would be to collect all the mount points found for the
> cgroup and try to find the right path when writing or reading from one
> cgroup file.
>
that is what i had in mind, tried looking into the code but my C skills are
next to zero

>
> Does systemd run lxc within a cgroup which is not the root cgroup ?
>
> the lxc-start command would run under $user/master/
(/sys/fs/cgroup/systemd/$user/$master)
and the container itself would run under $container_name
(/sys/fs/cgroup/systemd/$container_name)
so it would run the container in the root cgroup
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