[CRIU] CRIU in Docker for Mac

[Andrei Vagin]

On Tue, Jan 24, 2017 at 07:37:50PM -0800, Andrei Vagin wrote:
> On Tue, Jan 24, 2017 at 11:17:28PM +0000, Ross Boucher wrote:
> > It seems that this function probably isn't implemented in musl:
> > https://git.musl-libc.org/cgit/musl/tree/src/sched/sched_getscheduler.c
> 
> Uhuuuu. musl is so lightweight and fast!!!!!
> https://git.musl-libc.org/cgit/musl/tree/src/sched/sched_getparam.c
> 
> Ross, could you try out this patch:
> https://github.com/avagin/criu/commit/265e9fc138f98b742a68b6991225f28d3c99f9b5

And you need one more patch:
https://github.com/avagin/criu/commit/ff8777b3628eae6b7cc98c7b925cf88508dd3aa8

With these two patches static/env00 passes on Alpine:

https://travis-ci.org/avagin/criu/builds/195081973

> 
> Thanks,
> Andrei
> 
> > 
> > Is there any hope for a workaround?
> > 
> > On Tue, Jan 24, 2017 at 6:09 PM Ross Boucher <rboucher at gmail.com> wrote:
> > 
> >     Installing ip6tables got a bit further, but now it seems to fail possibly
> >     on sched_getscheduler:
> > 
> >     (00.032508) Error (criu/cr-dump.c:134): Can't get sched policy for 2337:
> >     Function not implemented
> > 
> >     Full log: https://gist.github.com/boucher/5c8edcbf0c7f9d9e39ed1d74c09440e5
> > 
> > 
> >     On Tue, Jan 24, 2017 at 5:53 PM Ross Boucher <rboucher at gmail.com> wrote:
> > 
> >         Hey everyone,
> > 
> >         Since checkpoint/restore has shipped in experimental mode for Docker, I
> >         thought I'd try to get it working with Docker for Mac. I think this
> >         should be possible, since it seems building for Alpine linux has
> >         already been taken care of, but I haven't gotten it working just yet. 
> > 
> >         What I have done is install CRIU 2.9, from the apk testing repository
> >         for alpine linux, in the d4m vm[1], then run a simple checkpoint on a
> >         busybox container. Here's the dump log:
> > 
> >         https://gist.github.com/boucher/2ac2de1d80ab59bce518d108ec8d0371
> > 
> >         Seems that some network script isn't working, but I'm not sure if the
> >         log is telling me that its an RPC script.
> > 
> >         Thanis,
> >         Ross
> > 
> > 
> >         [1]: You can access the vm with screen:
> > 
> >         screen ~/Library/Containers/com.docker.docker/Data/
> >         com.docker.driver.amd64-linux/tty
> > 
> > 
> 
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> 
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