[CRIU] failure dumping nginx in docker container

[Ross Boucher]

Here's the output same procedure without the restore-sibling option:
https://gist.githubusercontent.com/boucher/b18593b9da2782d17e95/raw/strace.txt

It's rather long. I'm not really sure how to read the strace output.

On Tue, Jun 23, 2015 at 11:39 PM, Pavel Emelyanov <xemul at parallels.com>
wrote:

> On 06/24/2015 01:42 AM, Ross Boucher wrote:
> > If I run strace on the docker daemon, criu fails to restore with a
> different error:
> >
> > https://gist.github.com/boucher/bef6e944ae700526a979
> > (I included both the restore log and the strace)
> >
> > Without strace, I get the same fd already in use error.
>
> Hm... The new error is because criu tries to PTRACE_SEIZE the init to do
> the
> --restore-sibling restore and can't do it since strace is already there.
>
> Can you (for experiment only) patch out the --restore-sibling option from
> the
> code that calls criu? Or (!) call criu restore manually on the existing
> images
> with all the options being "correct" by yet again w/o the
> --restore-sibling?
>
> -- Pavel
>
>
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