[CRIU] Restarting Process in an LXC Container

[Thouraya TH]

Hello :) thanks a lot for help.

*How do you enter into CT? Do you use screen or ssh?*

Before the Dumping Process:

root at g-2:~# lxc-ls -f
NAME     STATE    IPV4  IPV6  GROUPS  AUTOSTART
-----------------------------------------------
worker   STOPPED  -     -     -       NO
root at g-2:~# lxc-start -n worker
root at g-2:~# lxc-attach -n worker
root at worker:/home# cat > test.sh <<-EOF
> #!/bin/sh
> while :; do
>     sleep 1
>     date
> done
> EOF
root at worker:/home# chmod +x test.sh
root at worker:/home# ./test.sh
Mon Jan 19 17:58:57 CET 2015
Mon Jan 19 17:58:58 CET 2015
..........................
After Restart, i have used ssh.


dump.log:
Warn  (fsnotify.c:183): fsnotify:       Handle 800003:9db17 cannot be opened
Warn  (fsnotify.c:183): fsnotify:       Handle 800003:9db1d cannot be opened
tar: ./udev/control: socket ignored

restore.log"
Warn  (cr-restore.c:996): Set CLONE_PARENT | CLONE_NEWPID but it might
cause restore problem,because not all kernels support such clone flags
combinations!
RTNETLINK answers: File exists
RTNETLINK answers: File exists
RTNETLINK answers: File exists

Thank you so much for help.
Best Regards.

2015-01-16 12:29 GMT+01:00 Andrew Vagin <avagin at parallels.com>:

> On Thu, Jan 15, 2015 at 02:02:56PM +0100, Thouraya TH wrote:
> > Hello,
>
> Hello,
>
> Add Tycho into CC.
>
> >
> > Please,i have a question about the restarting process of a LXC container.
> > i run this script http://criu.org/Simple_loop in a container:
> >
> > 1)
> > ubuntu at worker:/home$ ./test.sh
> > Wed Jan 14 22:30:23 CET 2015
> > Wed Jan 14 22:30:24 CET 2015
> > Wed Jan 14 22:30:25 CET 2015
> > Wed Jan 14 22:30:26 CET 2015
> > Wed Jan 14 22:30:35 CET 2015
> > .......................
>
> How do you enter into CT? Do you use screen or ssh?
>
>
> > 2) i have done the dumping process:
> >       root at g-3:/home# lxc-checkpoint -s -D /home/ImGLXC1Worker -n worker
> > 3) i have restart the container:
> >     root at g-3:/home/ImGLXC1Worker# lxc-checkpoint -r -D
> /home/ImGLXC1Worker -n
> > worker
> >      # lxc-ls -f
> > NAME     STATE    IPV4        IPV6  GROUPS  AUTOSTART
> > -----------------------------------------------------
> > worker   RUNNING  10.0.3.109  -     -       NO
>
> Thouraya, Could you increase verbose level for criu and show us dump and
> restore
> logs? Tycho, could you explain how to do this with lxc-checkpoint?
>
> Thanks,
> Andrew
>
> >
> > 4) ssh ubuntu@$(sudo lxc-info -n worker -H -i)
> > 5) ubuntu at worker:/home$ ps
> >   PID TTY          TIME CMD
> >   304 pts/0    00:00:00 bash
> >   318 pts/0    00:00:00 ps
> >
> > The process "test" didn't restart!
> >
> > i have done another test : ubuntu at worker:/home$ ./test.sh > Results.txt
> /
> > Dumping the container / Restarting the container/ The process "test"
> didn't
> > restart! and the file Results.txt didn't change !
> >
> > Have you an idea please ?
> >
> > Thanks a lot.
> > Best Regards.
>
> > _______________________________________________
> > CRIU mailing list
> > CRIU at openvz.org
> > https://lists.openvz.org/mailman/listinfo/criu
>
>
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