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cgroup: skip unified if we are using v1

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There exists a chance for a node to be booted in v1, but have reminents of v2. An example is this CRI-O ci run: https://deck-ci.apps.ci.l2s4.p1.openshiftapps.com/view/gcs/origin-federated-results/pr-logs/pull/cri-o_cri-o/3565/test_pull_request_crio_critest_fedora/11243/

We fail because we are incorrectly writing to the unified path, because we are v1. We should not write to the unified path if we are v1

Signed-off-by: Peter Hunt <pehunt@redhat.com>
This commit is contained in:
Peter Hunt
2020-05-12 14:32:00 -04:00
parent 5b4e91db73
commit f4b59c74a7
1 changed files with 4 additions and 0 deletions
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4
pkg/cgroups/cgroups.go
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@ -517,6 +517,10 @@ func (c *CgroupControl) AddPid(pid int) error {
}
for _, n := range names {
// If we aren't using cgroup2, we won't write correctly to unified hierarchy
if !c.cgroup2 && n == "unified" {
continue
}
p := filepath.Join(c.getCgroupv1Path(n), "tasks")
if err := ioutil.WriteFile(p, pidString, 0644); err != nil {
return errors.Wrapf(err, "write %s", p)