Hi, With this as kernel boot options:
systemd.unified_cgroup_hierarchy=false systemd.legacy_systemd_cgroup_controller=false I have the old "cgcreate -g blkio:cinder-copy" that works perfectly, as the old cgroups v1 get mounted in the sysfs: # mount | grep -i cgroup cgroup2 on /sys/fs/cgroup/unified type cgroup2 cgroup on /sys/fs/cgroup/systemd type cgroup cgroup on /sys/fs/cgroup/net_cls,net_prio type cgroup cgroup on /sys/fs/cgroup/cpuset type cgroup cgroup on /sys/fs/cgroup/hugetlb type cgroup cgroup on /sys/fs/cgroup/cpu,cpuacct type cgroup cgroup on /sys/fs/cgroup/devices type cgroup cgroup on /sys/fs/cgroup/blkio type cgroup cgroup on /sys/fs/cgroup/freezer type cgroup cgroup on /sys/fs/cgroup/perf_event type cgroup cgroup on /sys/fs/cgroup/pids type cgroup cgroup on /sys/fs/cgroup/memory type cgroup cgroup on /sys/fs/cgroup/rdma type cgroup So I see no reason to remove cgroup-tools, which would otherwise break Cinder QoS for I/O. Cheers, Thomas Goirand (zigo)
