[libvirt] [RFC PATCH 0/4] LXC - Implement save/restore domain state

[Cedric Bosdonnat]

On Wed, 2018-04-11 at 12:34 +0100, Daniel P. Berrangé wrote:
> On Wed, Apr 11, 2018 at 12:29:11PM +0100, Radostin Stoyanov wrote:
> > This patch set contains rebased version of Katerina's work from GSoC 2016 [1].
> > It allows integrates CRIU [2] with the libvirt-lxc to enable save/resore of containers.
> 
> I vaguely recall that when Katerina first did that work, we hit some
> limitations of CRIU at the time, that blocked us merging. Does anyone
> recall what that was, and if & when it was addressed in CRIU ?

What was missing in CRIU was the possibility to write the data into a stream
rather than in files. From what I recall this work has been merged upstream
in the mean time.

--
Cedric

> > 
> > [1] https://wiki.libvirt.org/page/Google_Summer_of_Code_2016/lxc_migration
> > [2] https://criu.org
> > 
> > Radostin Stoyanov (4):
> >   configure: Include support for CRIU
> >   lxc: Add save/restore helper functions
> >   lxc: Add restore mode for libvirt-lxc
> >   lxc: Add save/restore support
> > 
> >  configure.ac             |   1 +
> >  m4/virt-criu.m4          |  27 +++++
> >  po/POTFILES.in           |   1 +
> >  src/lxc/Makefile.inc.am  |   4 +
> >  src/lxc/lxc_container.c  | 162 ++++++++++++++++++++++++++++--
> >  src/lxc/lxc_container.h  |   3 +-
> >  src/lxc/lxc_controller.c | 104 ++++++++++++++++++-
> >  src/lxc/lxc_criu.c       | 253 +++++++++++++++++++++++++++++++++++++++++++++++
> >  src/lxc/lxc_criu.h       |  36 +++++++
> >  src/lxc/lxc_driver.c     | 238 +++++++++++++++++++++++++++++++++++++++++++-
> >  src/lxc/lxc_process.c    |  23 ++++-
> >  src/lxc/lxc_process.h    |   1 +
> >  12 files changed, 836 insertions(+), 17 deletions(-)
> >  create mode 100644 m4/virt-criu.m4
> >  create mode 100644 src/lxc/lxc_criu.c
> >  create mode 100644 src/lxc/lxc_criu.h
> > 
> > -- 
> > 2.14.3
> > 
> > --
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> 
> Regards,
> Daniel