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From Jie Yu <yujie....@gmail.com>
Subject Re: Review Request 42618: Modified the `cgroups/net_cls` isolator to use the `NetClsHandleMgr`.
Date Mon, 01 Feb 2016 20:14:26 GMT

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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/42618/#review117243
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src/slave/containerizer/mesos/isolators/cgroups/net_cls.hpp (lines 38 - 39)
<https://reviews.apache.org/r/42618/#comment178408>

    What do we need this? Should we expose that using agent flags.



src/slave/containerizer/mesos/isolators/cgroups/net_cls.cpp (lines 282 - 294)
<https://reviews.apache.org/r/42618/#comment178368>

    I would pull this into a helper function in src/linux/cgroup.hpp|cpp
    
    ```
    Try<uint32_t> cgroups::net_cls::classid(hierachy, cgroup);
    ```
    
    This can be in a separate patch.



src/slave/containerizer/mesos/isolators/cgroups/net_cls.cpp (lines 285 - 286)
<https://reviews.apache.org/r/42618/#comment178372>

    Please align the error message accordingly.
    ```
    return Failure(
        "Unable to ..." +
        stringify(...));
    ```



src/slave/containerizer/mesos/isolators/cgroups/net_cls.cpp (lines 292 - 293)
<https://reviews.apache.org/r/42618/#comment178373>

    Ditto here.



src/slave/containerizer/mesos/isolators/cgroups/net_cls.cpp (lines 300 - 301)
<https://reviews.apache.org/r/42618/#comment178376>

    Ditto on alignment.
    
    Do you also need to clear 'infos' to be consistent?



src/slave/containerizer/mesos/isolators/cgroups/net_cls.cpp (lines 329 - 334)
<https://reviews.apache.org/r/42618/#comment178377>

    For known orphans, you want to recovery the classid as well. Otherwise, those handles
will be allocated to others while the known orphan containers are still using it.



src/slave/containerizer/mesos/isolators/cgroups/net_cls.cpp (line 413)
<https://reviews.apache.org/r/42618/#comment178378>

    s/netHandle/handle/



src/slave/containerizer/mesos/isolators/cgroups/net_cls.cpp (line 418)
<https://reviews.apache.org/r/42618/#comment178379>

    We typically put '+' at the end of the previous line.



src/slave/containerizer/mesos/isolators/cgroups/net_cls.cpp (lines 440 - 443)
<https://reviews.apache.org/r/42618/#comment178403>

    Can you try to see if writing a decimal number if fine as well? If not, we should move
the helper function into cpp as a file local helper.



src/slave/containerizer/mesos/isolators/cgroups/net_cls.cpp (line 454)
<https://reviews.apache.org/r/42618/#comment178404>

    s/allocate/write/



src/slave/containerizer/mesos/isolators/cgroups/net_cls.cpp (lines 457 - 458)
<https://reviews.apache.org/r/42618/#comment178405>

    Ditto on error message alignment.



src/slave/containerizer/mesos/isolators/cgroups/net_cls.cpp (lines 491 - 497)
<https://reviews.apache.org/r/42618/#comment178406>

    I don't think this is necessary.



src/slave/containerizer/mesos/isolators/cgroups/net_cls.cpp (lines 499 - 503)
<https://reviews.apache.org/r/42618/#comment178407>

    You should do this after the cgroup has been destroyed.


- Jie Yu


On Jan. 31, 2016, 8:06 p.m., Avinash sridharan wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/42618/
> -----------------------------------------------------------
> 
> (Updated Jan. 31, 2016, 8:06 p.m.)
> 
> 
> Review request for mesos and Jie Yu.
> 
> 
> Bugs: MESOS-4345
>     https://issues.apache.org/jira/browse/MESOS-4345
> 
> 
> Repository: mesos
> 
> 
> Description
> -------
> 
> The `NetClsHandleMgr` will be responsible for keeping track of the net_cls
> handles that will be used by the net_cls cgroup subsystem.
> 
> 
> Diffs
> -----
> 
>   src/slave/containerizer/mesos/isolators/cgroups/net_cls.hpp b4bc52114389d1c1efce2830f4292bd89bb0de7c

>   src/slave/containerizer/mesos/isolators/cgroups/net_cls.cpp ddc1bf0939e5e8995e6f34fe7b8509b51704f63e

> 
> Diff: https://reviews.apache.org/r/42618/diff/
> 
> 
> Testing
> -------
> 
> make and make check
> 
> 
> Thanks,
> 
> Avinash sridharan
> 
>


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