[lxc-devel] About PID in cgroup.procs

Christian Brauner christian.brauner at mailbox.org
Wed Dec 13 10:09:39 UTC 2017


On Wed, Nov 29, 2017 at 09:31:08AM +0000, Tian, Xianting (NSB - CN/Hangzhou) wrote:
> Hi,
> Sorry to trouble you, lxc experts. I met one confusion as below, could
> you spare one minute to help me?
> I created a container by "lxc-create" on CentOS host(lxc tool version
> is
> lxc-1.0.1.tar.gz<https://linuxcontainers.org/downloads/lxc/lxc-1.0.1.tar.gz>
> ), its name is "cn-centos", I login the container by "lxc-console",
> then run a task: "while true; do echo "xxx">/dev/null &". I checked
> and found the task is not in
> /sys/fs/cgroup/cpu/lxc/cn-centos/cgroup.procs(only /sbin/init 's PID
> in this file), but it is in /sys/fs/cgroup/cpu/cgroup.procs.
> After I upgrade lxc to version
> 2.0.9(lxc-2.0.9.tar.gz<https://linuxcontainers.org/downloads/lxc/lxc-2.0.9.tar.gz>),
> the task I create in container "cn-centos" is automatically added to
> "/sys/fs/cgroup/cpu/lxc/cn-centos/cgroup.procs", which is our
> expectation.
> 
> I really want to know how you fix the issue, could you show the fix
> code or the commit id?  Thanks in advance

Hm, can you reproduce this with our latest 1.0.* release?

https://linuxcontainers.org/downloads/lxc/lxc-1.0.11.tar.gz

Christian


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