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New View the Bug / Feature Tracker

[6.12.2] Can no longer set memory limits

By TheEyeTGuy

· 4124 views
  • Urgent

Hello,

It seems with the changes made when moving to cgroups-v2, docker is no longer able to set memory limits for containers, or control swap.

 

Whenever I edit, update, or add a container with memory limits applied, the following warnings appear:

  

WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
WARNING: Your kernel does not support memory swappiness capabilities or the cgroup is not mounted. Memory swappiness discarded.

 

I understand swap has never been 'officially' supported, but it appears that its now completely broken for docker in 6.12.x (working prior in 6.11.5) as well as the memory control.

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