Comments (1)
We use a TOML cgroups config format that is defined here: https://github.com/sylabs/singularity/blob/master/internal/pkg/cgroups/config_linux.go
This is closely related to the opencontainers/runtime-spec/specs-go constructs: https://github.com/opencontainers/runtime-spec/blob/master/specs-go/config.go
At present, the v1 cgroups config is applied via containerd/cgroups routines that directly accept LinuxResources
(s below):
For cgroups v2 a v2.LoadManager
followed by a v2.NewManager
call will setup resource limits. The resources type is now v2.Resources
(https://github.com/imilchev/cgroups/blob/dd572fc860afa53ef84ec0a8cd040b3e86f78bb4/v2/manager.go#L59) - we cannot simply pass the specs-go
LinuxResources
type, even though it has had a 'Unified' attribute added to support representing v2.
We need to investigate a way of moving forward... how the existing toml structure maps into the v2.Resources etc.
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