[CRIU] dump error

[Pavel Emelyanov]

On 01/04/2014 10:46 PM, Ashish Bijlani wrote:
> PPID   PID  PGID   SID TTY      TPGID STAT   UID   TIME COMMAND
>   105  4322  4322    65 pts/0     4365 S        0   0:00 lxc-start -n container -f l
>  4322  4324  4322    65 pts/0     4365 S        0   0:00 /sbin/init
>  4324  4326  4326    65 pts/0     4365 S        0   0:00 /sbin/ueventd
> 
> # criu dump --evasive-devices -n mnt -n ipc -n pid -vvvv -D data -o dump.log -t 4324
> 
> (00.468286) sid=0 pgid=0 pid=1
> (00.468453) Error (cr-dump.c:1472): A session leader of 4324(1) is outside of its pid namespace

The container init's session ID is 65, while it should be 4322, iow -- init should
be the session leader. What is the process with PID 64?

That's rather strange, IIRC LXC starts init as session leaders. You can try launch the
container with setsid command or to use the --shell-job option to workaround this situation.

Thanks,
Pavel