[Devel] [PATCH rh7 v2] ve: Add interface for @start_timespec and @real_start_timespec adjustmen

[Igor Sukhih]

On 02/09/2016 04:56 PM, Cyrill Gorcunov wrote:
> On Tue, Feb 09, 2016 at 04:43:53PM +0300, Cyrill Gorcunov wrote:
>> This two members represent monotonic and bootbased clocks for
>> container's uptime. When container is in suspended state (or
>> moving to another node) we trest monotonic and bootbased
>> clocks as being stopped so we need to account delta time
>> on restore and adjust the members in subject.
>>
>> Moreover this timestamps are involved into posix-timers
>> setup so once application tries to setup monotonic clocks
>> after the restore (with absolute time specification) we
>> adjust the values as well.
>>
>> The application which migrate a container must fetch
>> the current settings from /sys/fs/cgroup/ve/$VE/ve.real_start_timespec
>> and /sys/fs/cgroup/ve/$VE/ve.start_timespec, then write them
>> back on the restore.
>>
>> https://jira.sw.ru/browse/PSBM-41311
>> https://jira.sw.ru/browse/PSBM-41406
>>
>> v2:
>>   - use clock_[monotonic|bootbased] for cgroup entry names instead
> Guys if we agree on this, I'll send updated variant for libvzctl.
it not needed to update libvzctl.
it should be custom vz specific patch to criu to handle time specific 
cgroups natively