[CRIU] [PATCH 1/2] cgroups: Add ability to reuse existing cgroup yard directory

[Pavel Emelyanov]

On 06/12/2015 09:57 AM, Cyrill Gorcunov wrote:
> On Fri, Jun 12, 2015 at 12:27:03AM -0600, Tycho Andersen wrote:
>>>
>>> Never headr of such thing. Still one can pass --cgroup-yard option
>>> and define the directory to use instead of /sys/fs/cgroup (it should
>>> be premounted by caller then).
>>
>> Right, of course, it's just a change in the default behavior. I
>> thought there was some reason we didn't use /sys/fs/cgroup in the
>> first place, but I can't remember what it is.
> 
> Yes, it's a change in def. behaviour. The first version of patches
> used backward compatible manner -- ie until explicitly choosen via
> --cgroup-yard temp yard has been created and mounted, but Pavel proposed
> to drop it off.

The reason for our own cgyard was in -- if the host system lack some controller
mounted, then we would need to create our own. But AFAIU all modern distros have
full cgroup set mounted.

Do you think that I am over-optimistic and we should create cgyard ourselves?

-- Pavel