Which jobs are failing:

pull-kubernetes-node-crio-cgrpv2-e2e

Which test(s) are failing:

E2eNode Suite: [k8s.io] Summary API [NodeConformance] when querying /stats/summary should report resource usage through the stats api
E2eNode Suite: [k8s.io] ResourceMetricsAPI [NodeFeature:ResourceMetrics] when querying /resource/metrics should report resource usage through the resource metrics api

Since when has it been failing:

From what I have observed these tests have always failed on cgroup v2 host.

Testgrid link:

https://prow.k8s.io/view/gcs/kubernetes-jenkins/pr-logs/pull/99110/pull-kubernetes-node-crio-cgrpv2-e2e/1361561789094957056/

Reason for failure:

cgroup v2 has a different set of files compared to cgroup v1 to report the metrics. A lot of places in cadvisor, where the metrics end up getting read from, still assume cgroup v1 paths and files.

Anything else we need to know:

Some of the following PRs end up addressing the issue partially, but not completely.

google/cadvisor#2801
google/cadvisor#2800