Hi, I am playing with control groups on 2.6.23-rc8-mm1. I am able to mount cgroup and create subgroups. I was able to move some tasks into them. But, after killing tasks I am not able to remove the subgroups. Any idea on why ? Thanks, Badari elm3b155:/dev/cgroup # ls -l /dev/cgroup total 175 drwxr-xr-x 4 root root 0 Sep 25 15:02 . drwxr-xr-x 35 root root 179272 Sep 25 14:18 .. -rw-r--r-- 1 root root 0 Sep 25 14:22 cpuacct.load -rw-r--r-- 1 root root 0 Sep 25 14:22 cpuacct.usage -rw-r--r-- 1 root root 0 Sep 25 14:22 debug.cgroup_refcount -rw-r--r-- 1 root root 0 Sep 25 14:22 debug.current_css_set -rw-r--r-- 1 root root 0 Sep 25 14:22 debug.current_css_set_refcount -rw-r--r-- 1 root root 0 Sep 25 14:22 debug.taskcount -rw-r--r-- 1 root root 0 Sep 25 14:22 memory.control_type -rw-r--r-- 1 root root 0 Sep 25 14:22 memory.failcnt -rw-r--r-- 1 root root 0 Sep 25 14:22 memory.limit_in_bytes -rw-r--r-- 1 root root 0 Sep 25 14:22 memory.usage_in_bytes -rw-r--r-- 1 root root 0 Sep 25 14:22 notify_on_release -rw-r--r-- 1 root root 0 Sep 25 14:22 releasable -rw-r--r-- 1 root root 0 Sep 25 14:22 release_agent -rw-r--r-- 1 root root 0 Sep 25 14:22 tasks drwxr-xr-x 2 root root 0 Sep 25 16:27 xxx drwxr-xr-x 2 root root 0 Sep 25 14:22 yyy elm3b155:/dev/cgroup # cat xxx/tasks elm3b155:/dev/cgroup # cat yyy/tasks elm3b155:/dev/cgroup # elm3b155:/dev/cgroup # rmdir yyy rmdir: `yyy': Device or resource busy elm3b155:/dev/cgroup # rmdir xxx rmdir: `xxx': Device or resource busy elm3b155:/dev/cgroup # _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/containers