[CRIU] problem restoring a socket: Address already in use

[Pavel Emelyanov]

On 10/28/2014 02:05 AM, Tycho Andersen wrote:
> Hi all,
> 
> I'm trying to restore a container running a server (in particular, a
> VNC server), but the restore fails with:
> 
> (00.168868)    492: Error (sk-inet.c:541): Can't listen on a socket: Address already in use
> 
> full log is here: http://paste.ubuntu.com/8709744/
> 
> I guess what's happening is that the process listen()ed and then
> fork()ed, and then cant re-listen() from both when criu restarts?

We've tried to address that. If a socket (or any other file) is shared between
two or more tasks, then only one of them will create a socket on restore, all
the others will receive one via specially created temporary unix socket.

Maybe that's because of the original socket still hanging around?

Thanks,
Pavel