What should I do about this? Warning on boot

[TomasHermansson]

Hello,

I'm getting the following message on boot of my Proxmox server, and I'm wondering what I can do about it.

Message:Legacy cgroup v1 configured. This will stop being supported soon. Will proceed with cgroup v2 after 30 s.

My server boots up correctly after these messages are displayed, and everything seems to be working as it should. I'm currently running Proxmox 9.0.6.

What does this message mean? Do I need to take any action now, or is it something I can address later?

I'd be grateful for any help and guidance.

 

[UdoB]

You may read the release notes before executing an upgrade ;-) --> https://pve.proxmox.com/wiki/Upgrade_from_8_to_9#cgroup_V1_Removal

 

[TomasHermansson]

I updated GRUB to include

systemd.unified_cgroup_hierarchy=1

, and the warning is now gone. Thanks for the support!