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utils: use podman-pause-$RANDOM.scope name

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we try hard to re-use the existing podman-pause.scope name when it
already exists, causing any sort of race errors when the already
existing scope is terminating.

There is no such a requirement though, so just try with a random
name.

Closes: https://github.com/containers/podman/issues/12065

[NO NEW TESTS NEEDED] it fixes a race in the CI

Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
This commit is contained in:
Giuseppe Scrivano
2021-11-17 10:06:26 +01:00
parent c661664878
commit ee62711136
2 changed files with 11 additions and 10 deletions
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12
utils/utils.go
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@ -5,6 +5,7 @@ import (
"fmt"
"io"
"io/ioutil"
"math/rand"
"os"
"os/exec"
"strconv"
@ -203,7 +204,16 @@ func moveProcessToScope(pidPath, slice, scope string) error {
// MovePauseProcessToScope moves the pause process used for rootless mode to keep the namespaces alive to
// a separate scope.
func MovePauseProcessToScope(pausePidPath string) {
err := moveProcessToScope(pausePidPath, "user.slice", "podman-pause.scope")
var err error
for i := 0; i < 3; i++ {
r := rand.Int()
err = moveProcessToScope(pausePidPath, "user.slice", fmt.Sprintf("podman-pause-%d.scope", r))
if err == nil {
return
}
}
if err != nil {
unified, err2 := cgroups.IsCgroup2UnifiedMode()
if err2 != nil {