libct/cg/sd/v2: Destroy: remove cgroups recursively
Currently, we can create subcgroup in a rootless container with systemd cgroupv2 on centos8.
But after the container exited, the container cgroup and its subcgroup will not be removed.
Fix this by removing all directories recursively.
Fixes:
@@ -3,7 +3,6 @@ package systemd
import (
"fmt"
"math"
- "os"
"path/filepath"
"strconv"
"strings"
@@ -301,9 +300,10 @@ func (m *unifiedManager) Destroy() error {
return err
}
- // XXX this is probably not needed, systemd should handle it
- err := os.Remove(m.path)
- if err != nil && !os.IsNotExist(err) {
+ // systemd 239 do not remove sub-cgroups.
+ err := m.fsMgr.Destroy()
+ // fsMgr.Destroy has handled ErrNotExist
+ if err != nil {
return err
}
