[lxc-devel] lxc-checkpoint error

[Ruslan Kuprieiev]

Hi Axel,

On 03/24/2015 01:17 AM, Axel Schöner wrote:
> 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.

Thanks for a hint.

But shouldn't lxc-checkpoint just work? I mean, it should dump/restore lxc
container, so it probably should handle perf_event too.

>
>
>
>> 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
Thanks,
Ruslan