Thank you, when I mount all cgroup subsystem to cgroupfs, it mounts also the ns_cgroup which blocks the adding new taskes into given cgroup. If I mount a single subsystem (such as a memory), it can work. >> # mount -t cgroup cgroup /mnt/cgrp > > mount cgroupfs with all cgroup subsystems is not so sane IMO. > >> # cd /mnt/cgrp >> # mkdir test >> # echo $$ > test/tasks >> >> Then, I would like to add bash_B in this task group but >> fail: >> >> # echo #(PID_OF_bash_B) > test/tasks >> -bash: echo: write error: Operation not permitted >> > > That's because ns_cgroup is binded in this cgroup hierarchy, and > it's ns_cgroup that prevents the task attaching, but a patch in > -mm tree relaxes this check, and you won't see this restriction > when using ns_cgroup. > _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/containers
