1558745981 J * fstd_ ~fstd@xdsl-78-35-184-126.nc.de
1558746448 Q * fstd Ping timeout: 480 seconds
1558763513 Q * any0n Ping timeout: 480 seconds
1558769626 N * Bertl_zZ Bertl
1558769629 M * Bertl  morning folks!
1558780905 Q * dustinm` 
1558781266 J * dustinm` ~dustinm`@68.ip-149-56-14.net
1558788962 M * Bertl  off for now ... bbl
1558788963 N * Bertl Bertl_oO
1558818302 M * Guy- I moved all tasks to the root cgroup and removed all sub-cgroups, then umounted /dev/cgroup; but I still can't mount invididual cgroup controllers separately:
1558818305 M * Guy- [pid 10885] mount("cgroup", "/sys/fs/cgroup/debug", "cgroup", MS_MGC_VAL, "debug") = -1 EBUSY (Device or resource busy)
1558818310 M * Guy- why could that be?
1558818319 M * Guy- I also umounted /dev/cgroup inside all mount namespaces
1558819060 M * Guy- I used 'for v in $(grep -h . /etc/vservers/*/context); do for i in 0 1; do vspace --mount --fs -e $v -i $i -- grep cg /proc/mounts && echo $v $i; done; done' to check whether I succeeded, and since it prints no lines I think I did
1558819071 M * Guy- so why the EBUSY?
1558819530 M * Guy- my problem is likely that in /proc/*/cgroup, I see:
1558819531 M * Guy- 2:cpuset,cpu,cpuacct,blkio,memory,devices,freezer,net_cls,perf_event,net_prio,hugetlb,pids,debug:/
1558820391 M * Guy- so even though I moved all processes to the root cgroup, it still remembers what combination of controllers that means
1558820915 M * Guy- do I have to reboot the host to get rid of this?