*ISSUE 1:* In ubuntu20, centos8 and almalinux8:
*root@host:~# grep cgroup /proc/filesystemsnodev cgroupnodev cgroup2* In centos7: *root@centos:~# grep cgroup /proc/filesystemsnodev cgroup* In my centos 7, command '*grep cgroup /proc/filesystems'* does not output "nodev cgroup2". Does this mean cgroups v2 is not supported in it and cannot be enabled in it? *ISSUE 2:* In my ubuntu20, centos8 and alma8 server, I enable cgroups v2 by: 1. adding "systemd.unified_cgroup_hierarchy=1" to GRUB_CMDLINE_LINUX in /etc/default/grub, 2. executing the command "grub2-mkconfig" or "update-grub" as root and then 3. reboot the server. Without reboot, cgroups v2 does not come into effect when i check using the below command: *root@host:~# stat -fc %T /sys/fs/cgroup/tmpfs* Is there a way this can be done without a reboot? I am looking for a way to enable cgroups v2 which should n't need a reboot.
