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Tracker for cgroups v2 #1002

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vbatts opened this issue Mar 5, 2019 · 3 comments

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commented Mar 5, 2019

Cgroups unified hierarchy has been on the horizon for a while, and is now reaching critical mass to begin switching over. Most all the controllers or equivalent are there, but there are mappings needed.

This issue should serve as the tracker for remaining issues to close this gap.

  • ensure ebpf for devices maps to existing configs (device cgroup had a minor incompatibility (blacklisting isn't really possible))
  • freezer controller (expected in linux 5.2)
  • cgroupfs and/or systemd API
  • There's no longer separate limits for kmem and kmem.tcp
  • There's no longer a file to set "swappiness" for a single cgroup hierarchy
  • There's no longer a way to disable OOMs through the memcg

Related #948

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commented Mar 5, 2019

cc @filbranden for several of these are his findings

@AkihiroSuda

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commented Jun 6, 2019

@giuseppe are you willing to propose the crun conversion spec to OCI Runtime Spec?
https://github.com/giuseppe/crun/blob/master/crun.1.md#cgroup-v2

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commented Jun 6, 2019

@giuseppe are you willing to propose the crun conversion spec to OCI Runtime Spec?
https://github.com/giuseppe/crun/blob/master/crun.1.md#cgroup-v2

I can. I was already discussing them with @filbranden, @vbatts and @mrunalp.

I wonder if someone else beside me played with it though :-)

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