[lxc-devel] lxc-checkpoint error

[Axel Schöner]

Am Montag, 23. März 2015, 15:42:47 schrieb Ruslan Kuprieiev:
> Hi!
> 
> I'm trying to use lxc-checkpoint to dump/restore simple lxc container.
> 
> I added:
> |# hax for criu
> 
> lxc.console = none
> lxc.tty = 0
> lxc.cgroup.devices.deny = c 5:1 rwm|
> 
> to container config, but when I'm trying to run
> 
> |lxc-checkpoint -n $name -D $checkpoint_dir -s -v|
> 
> I get:
> Error (mount.c:624): 113: ./sys/fs/cgroup/perf_event doesn't have a
> proper root mount

The problem is, that "/sys/fs/cgroup/perf_event" is in your case a bindmount 
from outside (host).
CRIU can dump extern ressources which are bind mounted, you can find details 
on: http://www.criu.org/External_bind_mounts.
lxc-checkpoint does not care about /sys/fs/cgroup/perf_event.



> 
> Could you give me a hint on what is going on?
> I also saw that other people do experience the same problem:
> http://tycho.ws/blog/2014/09/container-migration.html
> 
> Thanks,
> Ruslan

-- 
Ba.Sc Axel Schöner
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