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config-linux: MAY reject an unfit cgroup #1125

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Dec 14, 2021
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config-linux: MAY reject an unfit cgroup #1125

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10 changes: 10 additions & 0 deletions config-linux.md
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Expand Up @@ -171,6 +171,16 @@ Also known as cgroups, they are used to restrict resource usage for a container
cgroups provide controls (through controllers) to restrict cpu, memory, IO, pids, network and RDMA resources for the container.
For more information, see the [kernel cgroups documentation][cgroup-v1].

A runtime MAY, during a particular [container operation](runtime.md#operation),
such as [create](runtime.md#create), [start](runtime.md#start), or
[exec](runtime.md#exec), check if the container cgroup is fit for purpose,
and MUST [generate an error](runtime.md#errors) if such a check fails.
For example, a frozen cgroup or (for [create](runtime.md#create) operation)
a non-empty cgroup. The reason for this is that accepting such configurations
could cause container operation outcomes that users may not anticipate or
understand, such as operation on one container inadvertently affecting other
containers.

### <a name="configLinuxCgroupsPath" />Cgroups Path

**`cgroupsPath`** (string, OPTIONAL) path to the cgroups.
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