Hi cgroups folks, I have very simple question which I was not able to google: is there such subsystem as systemd? It is not shown in `lssubsys -am` and `cat /proc/cgroups` but shown in `cat /proc/self/mountinfo`. Also in some cases I can see how «systemd» subsystem, If we can call it so, breaks Rule 2 described in the Red Hat doc: «Any single subsystem (such as cpu) cannot be attached to more than one hierarchy if one of those hierarchies has a different subsystem attached to it already.» Attached two times, if I understand it correctly: # cat /proc/self/mountinfo | grep systemd | grep cgroup 26 25 0:23 / /sys/fs/cgroup/systemd rw,nosuid,nodev,noexec,relatime shared:6 - cgroup cgroup rw,xattr,release_agent=/usr/lib/systemd/systemd-cgroups-agent,name=systemd 2826 26 0:23 /kubepods/burstable/pod7ffde41a-fa85-4b01-8023-69a4e4b50c55/8842def241fac72cb34fdce90297b632f098289270fa92ec04643837f5748c15 /sys/fs/cgroup/systemd/kubepods/burstable/pod7ffde41a-fa85-4b01-8023-69a4e4b50c55/8842def241fac72cb34fdce90297b632f098289270fa92ec04643837f5748c15 rw,nosuid,nodev,noexec,relatime shared:6 - cgroup cgroup rw,xattr,release_agent=/usr/lib/systemd/systemd-cgroups-agent,name=systemd So, to cocnlude Q1. Is there such subsystem as systemd? Q2. Why it’s not shown in one way but shown in another? Q3. Why I can see it is mounted twice breaking Rule 2? -- Best Regards, Andrei Enshin
