On 08/04/2012 11:32 PM, Dhaval Giani wrote:
> On Sat, Aug 4, 2012 at 1:38 PM, Ivana Varekova <varek...@redhat.com> wrote:
>>
>>
>> ----- Original Message -----
>>> From: "Dhaval Giani" <dhaval.gi...@gmail.com>
>>> To: "Ivana Varekova" <varek...@redhat.com>
>>> Cc: "Balbir Singh" <bsinghar...@gmail.com>, "Jan Safranek" 
>>> <jsafr...@redhat.com>, "Libcg Development list"
>>> <libcg-devel@lists.sourceforge.net>
>>> Sent: Friday, August 3, 2012 3:47:47 PM
>>> Subject: Re: [Libcg-devel] new feature idea (v2)
>>>
>>>> 2/ after short discussion with jan, we found the default behaviour
>>>> of "template" group, which will be defined by some template in
>>>> cgrules.conf should be consistent with the cgconfig.conf default
>>>> behavior - cgconfig conf creates parent group of the defined group
>>>> by plane mkdir - no copy-from-parent.
>>>> Thus template cgroup shoud be create by mkdir if there is no
>>>> specification in cgconfig.conf as well.
>>>
>>> This bit doesn't work. What do you do for cpusets?
>>>
>>> Dhaval
>>>
>> Then it is the same situation if you define a cgroup in cpuset in 
>> cgconfig.conf. I plan to do examples and document the configuration nicely.
>> From my point this is the best solution. Is it ok for you?
> 
> I would prefer a sane default, such as copy_from_parent, which means,
> we will almost always have a sane default, which works.

There is no sane default without extensive logic in libcgroup, copy from
parent won't work on cpuset with cpu_exclusive.

Current cgconfigparser does simple mkdir for groups, which are not
configured. It is up to the administrator to pre-configure parent groups
if simple mkdir is not enough.

I think that cgrulesengd should do exactly the same.

Jan


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