[CRIU] Trying to Checkpoint LXC

[Andrew Vagin]

On Sun, Nov 24, 2013 at 12:16:31AM +0400, Pavel Emelyanov wrote:
> On 11/23/2013 01:35 AM, Nipun Arora wrote:
> > (02.773070) tty: Dumping tty 68 with id 0x158
> > (02.773214) Error (tty.c:221): tty: Unexpected format on path /dev/lxc/tty4
> > (02.773278) ----------------------------------------
> 
> 
> That's the reason of failure. If I'm not mistaken, this is an external console
> of the container. We haven't looked at supporting such containers yet (we don't
> create such when we start OpenVZ containers).
> 
> If you can configure your container not to create this thing, dump should
> proceed.

http://criu.org/LXC

You can add "lxc.console=none" in a container config.

> Another option could be to tune the tty.c file to detect LXC consoles
> and dump them as such (most of the code should be there, we just need the
> proper detection and a mark in the image file, that this thing is an LXC
> console).
> 
> Thanks,
> Pavel
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