[CRIU] problem restoring process with alternate rootfs

[Andrew Vagin]

On Thu, Jul 10, 2014 at 08:34:30AM -0500, Tycho Andersen wrote:
> > What's the command you use for restore? In case tasks live in mount namespace
> > _and_ chroot (well, pivot_root) the --root option should be used to tell criu
> > where it is.
> 
> My restore command is:
> 
> ./criu restore \
>     -D dump/ \
>     -vvvvvv \
>     --file-locks \
>     --action-script "/home/ubuntu/criu/test/app-emu/lxc/network-script.sh"   \
>     -n net -n mnt -n ipc -n pid \
>     --tcp-established \
>     --root /var/lib/lxc/u1/rootfs \
> 
> and now with --root I get:
> 
> (00.266014)      1: Path `/var/lib/lxc/u1/rootfs' resolved to `./' mountpoint
> (00.266017)      1: Error (mount.c:1953): New root and old root are the same
> 
> which I also don't understand :(

Looks like /var/lib/lxc/u1/rootfs isn't a mount point.

Could you try to bind-mount root in another place and set the new place
to the --root option?

> 
> Thanks,
> 
> Tycho
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