[lxc-users] lxc move fails

[Tycho Andersen]

On Wed, Jun 01, 2016 at 02:13:55PM -0700, jjs - mainphrame wrote:
> I've been hoping for a return of live migration functionality as well.
> I tried after today's lxc upgrades, but no joy:
> 
> root at olympia:~# lxc move kangal lxd1:
> error: Error transferring container data: checkpoint failed:
> (00.614250) Error (files-reg.c:683): Can't dump ghost file
> /lib/x86_64-linux-gnu/libc-2.19.so of 1840928 size, increase limit
> (00.614252) Error (cr-dump.c:1356): Dump mappings (pid: 3572) failed with -1
> (00.617439) Error (cr-dump.c:1600): Dumping FAILED.
> root at olympia:~#
> 
> Both hosts are ubuntu 16.04, up to date as of this message.
> 
> Shall I file a bug report?

Sure, we should probably expose some way to increase the ghost file
size limit. I'm not sure if we can make it unlimited, though, so there
will always be some problem like this. Of course, 640k should be
enough for anyone and all that :)

But yes, please file a bug and we can at least make it configurable.

Tycho

> Jake
> 
> 
> On Wed, Jun 1, 2016 at 7:24 AM, Stéphane Graber <stgraber at ubuntu.com> wrote:
> > On Wed, Jun 01, 2016 at 11:04:58PM +0900, Tomasz Chmielewski wrote:
> >> Trying to move a running container between two Ubuntu 16.04 servers with the
> >> latest updates installed:
> >>
> >> # lxc move local-container remote:
> >> error: Error transferring container data: checkpoint failed:
> >> (00.316028) Error (pie-util-vdso.c:155): vdso: Not all dynamic entries are
> >> present
> >> (00.316211) Error (cr-dump.c:1600): Dumping FAILED.
> >>
> >>
> >> Expected?
> >
> > I don't believe I've seen that one before. Maybe Tycho has.
> >
> > Live migration is considered an experimental feature of LXD right now,
> > mostly because CRIU still needs quite a bit of work to serialize all
> > useful kernel structures.
> >
> > You may want to follow the "Sending bug reports" section of my post here
> > https://www.stgraber.org/2016/04/25/lxd-2-0-live-migration-912/
> >
> > That way we should have all the needed data to look into this.
> >
> > --
> > Stéphane Graber
> > Ubuntu developer
> > http://www.ubuntu.com
> >
> > _______________________________________________
> > lxc-users mailing list
> > lxc-users at lists.linuxcontainers.org
> > http://lists.linuxcontainers.org/listinfo/lxc-users
> _______________________________________________
> lxc-users mailing list
> lxc-users at lists.linuxcontainers.org
> http://lists.linuxcontainers.org/listinfo/lxc-users