[CRIU] LXC checkpoint/restore HOWTO using upstream tools

[Pavel Emelyanov]

On 09/19/2014 05:36 PM, Tycho Andersen wrote:

>> * You can't checkpoint containers that have been restored. This is the
>>   tty bug that Cyrill and I talked about a while ago.
>> * Possibly related, when you try and lxc-stop a restored container, it
>>   hangs once the container is stopped and leaves a getty that is
>>   taking 100% CPU.
>> * There is some small bug with how the cgroups are reattached when
>>   they are co-mounted. I am going to look into this today.
> 
> I guess one other thing to point out is that I have migrated
> containers across hosts just by rsyncing the checkpoint directory and
> the rootfs. When I restore them, they come back up and you can inspect
> them with the new machine's LXC tools.

That's also good news :) Hopefully you will find the p.haul
project to be worth using for all these steps :) plus some
great memory migration optimization that uses criu's pre-dump.

Thanks,
Pavel