LVE load fail: could not insert 'kmodlve': Cannot allocate memory

Issue

• LVE Module cannot be loaded with error

  modprobe: ERROR: could not insert 'kmodlve': Cannot allocate memory

• dmesg contains error

  LVE: [53551] mount_cgroup_root_fs: failed to mount cgroup(memory), rc=-16

• The command below return cgroup2fs

  # stat -fc %T /sys/fs/cgroup/
  cgroup2fs

• No systemd.unified_cgroup_hierarchy=0 systemd.legacy_systemd_cgroup_controller in /proc/cmdline

Environment

• CloudLinux 
• tuned-profiles-cloudlinux >= 0.2-5
• LVE

Solution

Reboot the server.

Cause

Cgroups v2 is not supported by kmodlve.