[Lxc-users] [PATCH 2/2] cgroups: support cgroups mounted in multiple places

[Daniel Lezcano]

On 06/24/2011 07:54 PM, Serge Hallyn wrote:
> I.e. with systemd or libcgroup.
>
> To do this, instead of looking for one cgroup called 'lxc' or
> otherwise taking the first cgroup we find, we actually create a
> container in every mounted cgroup fs.  Right now it's done under the
> root of each fs.  We may want to put that under lxc, or, better yet,
> make that configurable.
>
> Note the use of clone_children seems not quite right, but that's
> not for this patch to fix.  In particular, if clone_children is
> not in the mntopts, we reject it.  Yet later we try to set it
> ourselves.  I believe we should simply, if ns cgroup is not
> composed, always try to set clone_children to 1.  As it stands,
> with libcgroup installed, I had to do
>
>    cd /sys/fs/cgroup
>    for d in `/bin/ls`; do
>       echo 1 > $d/cgroup.clone_children
>    done
>
> But after that, 'lxc-start -n l1' worked like a charm.  It also
> continues to work with a single mount of cgroups under /cgroup.
>
> Signed-off-by: Serge Hallyn <serge.hallyn at ubuntu.com>
> ---

Ok, I installed f15 on a kvm machine. But WTF are all these daemons !!

1 root      20   0 48232  15m 1772 R 66.1  1.5   4:53.82
systemd              
19247 dlezcano  20   0  790m  40m  11m R 62.2  4.0   0:46.93
gnome-settings-      
19255 root      20   0  104m  27m 3252 R 35.9  2.8   0:44.83
packagekitd          
1173 root      20   0  196m  65m 2416 R 30.6  6.5   2:43.70
udisks-daemon        

... eating all the cpu and making impossible to use the fedora ?

systemd is looking all the time at /proc/1/mountinfo and reading the
content, nice for an init process ! And tomorrow the init process will
be firefox ...