[CRIU] Unable to checkpoint LXC containers using criu

[Swapnil Haria]

Hi,

I am trying to checkpoint an LXC container using the instructions posted
here - http://tycho.ws/blog/2014/09/container-migration.html.

I am running Ubuntu 14.10 and the spawned container has Ubuntu 14.04. The
LXC version is 1.1, and the criu version is 1.5.1. The root filesystem type
is ext4.

I have added the following to the container config file:

|# hax for criu
lxc.console = none
lxc.tty = 0
lxc.cgroup.devices.deny = c 5:1 rwm|

but when I'm trying to run

lxc-checkpoint -n $name -D $checkpoint_dir -s -v

I see this error message -
Error (mount.c:595): FS mnt ./sys/fs/selinux type unsupported dev 0xf root
/ unsupported id 35
Error (cr-dump.c:1979): Dumping FAILED.

Can someone let me know what the problem could be? Is there any particular
configuration for the host and guest machine that is needed for
checkpointing lxc containers?

Thanks,
Swapnil Haria
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