intStr := intstr.FromInt32(int32(maxUnavailable))
	ds.Spec.UpdateStrategy.RollingUpdate = &apps.RollingUpdateDaemonSet{MaxUnavailable: &intStr}
	err = manager.dsStore.Update(ds)
	if err != nil {
		t.Fatal(err)
	}

	// new pods are not ready numUnavailable == maxUnavailable
	clearExpectations(t, manager, ds, podControl)
	expectSyncDaemonSets(t, manager, ds, podControl, 0, maxUnavailable, 0)

	maxUnavailable, err := intstr.GetScaledValueFromIntOrPercent(d.Spec.Strategy.RollingUpdate.MaxUnavailable, int(*(d.Spec.Replicas)), false)
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}

	if *(d.Spec.Replicas)-int32(maxUnavailable) <= 0 {
		t.Fatalf("the default value of maxUnavailable can lead to no active replicas during rolling update")
	}
}

	maxUnavailable, err := intstr.GetScaledValueFromIntOrPercent(d.Spec.Strategy.RollingUpdate.MaxUnavailable, int(*(d.Spec.Replicas)), false)
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}

	if *(d.Spec.Replicas)-int32(maxUnavailable) <= 0 {
		t.Fatalf("the default value of maxUnavailable can lead to no active replicas during rolling update")
	}
}

	maxUnavailable, err := intstr.GetScaledValueFromIntOrPercent(d.Spec.Strategy.RollingUpdate.MaxUnavailable, int(*(d.Spec.Replicas)), false)
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}

	if *(d.Spec.Replicas)-int32(maxUnavailable) <= 0 {
		t.Fatalf("the default value of maxUnavailable can lead to no active replicas during rolling update")
	}
}

	if rollingUpdate.MaxUnavailable != nil {
		allErrs = append(allErrs, ValidatePositiveIntOrPercent(*rollingUpdate.MaxUnavailable, fldPathMaxUn)...)
		if getIntOrPercentValue(*rollingUpdate.MaxUnavailable) == 0 {
			// MaxUnavailable cannot be 0.
			allErrs = append(allErrs, field.Invalid(fldPathMaxUn, *rollingUpdate.MaxUnavailable, "cannot be 0"))
		}
		// Validate that MaxUnavailable is not more than 100%.

		},
	}
}

func makeStatefulSetWithMaxUnavailable(maxUnavailable *int) *apps.StatefulSet {
	rollingUpdate := apps.RollingUpdateStatefulSetStrategy{}
	if maxUnavailable != nil {
		maxUnavailableIntStr := intstr.FromInt32(int32(*maxUnavailable))
		rollingUpdate = apps.RollingUpdateStatefulSetStrategy{
			MaxUnavailable: &maxUnavailableIntStr,
		}
	}

	return &apps.StatefulSet{

	if desiredNumberScheduled > 0 && maxUnavailable == 0 && maxSurge == 0 {
		logger.Info("DaemonSet is not configured for surge or unavailability, defaulting to accepting unavailability", "daemonset", klog.KObj(ds))
		maxUnavailable = 1
	}
	logger.V(5).Info("DaemonSet with maxSurge and maxUnavailable", "daemonset", klog.KObj(ds), "maxSurge", maxSurge, "maxUnavailable", maxUnavailable)

			unavailablePods++
		}
	}

	if unavailablePods >= maxUnavailable {
		logger.V(2).Info("StatefulSet found unavailablePods, more than or equal to allowed maxUnavailable",
			"statefulSet", klog.KObj(set),
			"unavailablePods", unavailablePods,
			"maxUnavailable", maxUnavailable)
		return &status, nil
	}

	// Now we need to delete MaxUnavailable- unavailablePods

	}

	// Changing MinAvailable to MaxAvailable? OK
	maxUnavailable := intstr.FromString("28%")
	newPdb.Spec.MaxUnavailable = &maxUnavailable
	newPdb.Spec.MinAvailable = nil
	Strategy.PrepareForUpdate(ctx, newPdb, pdb)
	errs = Strategy.ValidateUpdate(ctx, newPdb, pdb)
	if len(errs) != 0 {
		t.Errorf("Expected no error updating replacing MinAvailable with MaxUnavailable on poddisruptionbudgets.")
	}
}

	// An eviction is allowed if at most "maxUnavailable" pods selected by
	// "selector" are unavailable after the eviction, i.e. even in absence of
	// the evicted pod. For example, one can prevent all voluntary evictions
	// by specifying 0. This is a mutually exclusive setting with "minAvailable".
	// +optional
	MaxUnavailable *intstr.IntOrString `json:"maxUnavailable,omitempty" protobuf:"bytes,3,opt,name=maxUnavailable"`