[CRIU] criu_restore() in Open MPI problems

[Cyrill Gorcunov]

On Tue, Mar 18, 2014 at 07:22:55PM +0100, Adrian Reber wrote:
> On Tue, Mar 18, 2014 at 09:15:04PM +0400, Cyrill Gorcunov wrote:
> > On Tue, Mar 18, 2014 at 06:03:18PM +0100, Adrian Reber wrote:
> > > Now that dumping works from Open MPII am trying to restore.
> > > Right now it fails with:
> > > 
> > > (00.000119) TCP queue memory limits are 2097152:3145728
> > > (00.000303) cpu: fpu:1 fxsr:1 xsave:1
> > > (00.000399) vdso: Parsing at 7fff84c27000 7fff84c29000
> > > (00.000407) vdso: Base address ffffffffff700000
> > > (00.000440) Reading image tree
> > > (00.000468) Migrating process tree (GID 25983->29676 SID 9042->29676)
> > > (00.000475) Will restore in 0 namespaces
> > > (00.000479) NS mask to use 0
> > > (00.000487) Collecting 41/21 (flags 0)
> > > (00.000514)  `- ... done
> > > (00.000520) Error (tty.c:1213): tty: Standard stream is not a terminal, aborting
> > > 
> > > I am not sure what this really means, but I suspect it has to do
> > > something with dumping with criu_set_shell_job(true) and restoring from
> > > inside a program instead of the command line. Running the command line
> > > tool instead of the criu_restore() works much better but fails in the
> > > end with:
> > 
> > Have you been dumping with --shell_job option? If yes, would it do the
> > trick without this option?
> 
> Yes, I dumped with the shell_job option. Without shell_job it does not dump:
> 
> Error (pstree.c:196): The root process 26660 is not a session leader.  Consider using --shell-job option

Heh ;-) Could you please show ls -l /proc/<pid>/fd where <pid> is the pid of a process
you're dumping (and also try dump with -v4 --shell-job and show complete dump log).