[lxc-devel] LXC live migrate

[Marian Marinov]

On 11/26/2013 04:58 AM, Stéphane Graber wrote:
> On Tue, Nov 26, 2013 at 04:04:36AM +0200, Marian Marinov wrote:
>> Hey guys,
>> I just read on LWN about the checkpoint/restore tool:
>>     http://lwn.net/Articles/574917/
>>
>> With this, it seams possible to freeze and restore a whole container from one node to another.
>>
>> I'll give it a try this week to give more details on how it actually works.
>>
>> Marian
>
> I think I last tried it with CRIU 0.8 without much success but I took an
> action item during Ubuntu's planning even last week to try with a newer
> release and get in touch with Pavel if I'm still having issues.
>
>  From what we discussed at Linux Plumbers, CRIU should indeed let you
> dump a full container and restore it on the same machine or on another
> so long as the filesystem and any other external dependency of the
> container matches.
>
> If I can get this working and they've resolved a few of the known issues
> (specifically the fact that it'd only build on x86_64), then the plan is
> to add API calls to LXC's API that'll implement the checkpoint/restore
> feature using CRIU.
>
I'm going to test this today on CentOS 6 with kernel 3.12. So if you want, you can wait for my results :)

Marian