[CRIU] [PATCHv0 0/3] Support C/R of frozen cgroup

Pavel Emelyanov xemul at parallels.com
Tue Dec 8 04:38:27 PST 2015


On 11/26/2015 12:31 AM, Andrey Wagin wrote:
> 2015-11-24 16:34 GMT+03:00 Eugene Batalov <eabatalov89 at gmail.com>:
>> Hello. This patchset implements c/r of ps tree
>> that was frozen using freezer controller before start of
>> ps tree dumping.
>> Such ps tree will be frozen after restore.
> 
> Hi,
> 
> Thank you for the patches. They look good at first glance. I will
> review them more carefully tomorrow.

So? :)

> I want to suggest to add the --leave-frozen options to freeze
> processes after restoring even if  they were not frozen before.
> 
>> This means that we can c/r paused Docker containers.
>> See details in issue #20 on github:
>> https://github.com/xemul/criu/issues/20
>>
>> We'll send patch with autotest for this feature later.
>>
>> From user point of view we extend functionality of --freeze-cgroup
>> option so CRIU documentation and help message for --freeze-cgroup
>> option may need some improvement/clarification.
>>
>> Evgeniy Akimov (3):
>>   cgroups: save freezer state during dump
>>   restore: split finalize_restore into two stages
>>   restore: restore freezer cgroup state
>>
>>  cgroup.c              | 63 +++++++++++++++++++++++++++++++++++++++++++++++++++
>>  cr-restore.c          | 37 +++++++++++++++++++-----------
>>  include/cgroup.h      |  1 +
>>  include/seize.h       |  1 +
>>  protobuf/cgroup.proto |  1 +
>>  seize.c               |  5 ++++
>>  6 files changed, 95 insertions(+), 13 deletions(-)
>>
>> --
>> 1.9.1
>>
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