[CRIU] Live migration of LXC containers using Criu?

[Divjyot sethi]

Hey Pavel,
After a bit of a hiatus, I finally got around to istalling everything on my
machines and am now trying to live migrate OpenVZ containers running CentOS
with p.haul. I however get an error at CRIU dump stage -- log file says
"Error (sk-unix.c:222): Unix socket 0x6893 without peer 0xc5b". Any
thoughts on this issue?

Thanks,
Divjyot

On Tue, Apr 28, 2015 at 1:15 AM, Pavel Emelyanov <xemul at parallels.com>
wrote:

> On 04/27/2015 10:43 PM, Divjyot sethi wrote:
> > Hey Pavel,
> > I have been trying to setup OpenVZ on fedora 20 as you had advised for
> the past few days. I
> > was able to create a container and start it. However, I am unable to
> enter the container
> > (gives error: /Directory /proc/vz not found, assuming non-OpenVZ kernel
> > enter into CT 1002 failed
> > Unable to open pty: No such file or directory/).
>
> Yes, entering for Fedora kernel doesn't work. You can ssh into container
> instead,
> the [1] article describes how to setup networking for container to make it
> migrate-able.
>
> [1]
> https://github.com/xemul/p.haul/wiki/Configuring-network-for-OpenVZ-container
>
> > I tried the instructions on /
> http://wiki.openvz.org/Container_enter_failed/, and,
> > /https://openvz.org/Vzctl_for_upstream_kernel/ but no luck. Since this
> is an upstream kernel
> > - not sure if there are any patches available for this? (I have been
> booting regular kernel).
> >
> > Can you please help me with setting this up? Also, did you patch your
> kernel? Were you able
> > to enter the container or you just ssh to it instead?
>
> Entering openvz container only works for patched kernel. But for patched
> kernel
> there's still no criu support :( But openvz kernel guys are working on it.
>
> > Finally, not sure if this question is apt for this mailing list?
> > If not, is there an alternate mailing list to which I can email?
>
> Well, for openvz-related questions the devel at openvz.org is good place to
> start, but
> for C/R and live migration questions it's better to at least Cc: criu@
> mailing list.
>
> > Thanks for your help!
> > Divjyot
>
> -- Pavel
>
>
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