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Fix PV counter predicate in eclass

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This commit is contained in:
Harry Zhang 2017-11-30 21:57:10 +08:00
parent 8c1ee761d2
commit af243f4824
2 changed files with 53 additions and 14 deletions
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17
plugin/pkg/scheduler/core/equivalence_cache.go
View File

@ -188,6 +188,23 @@ func (ec *EquivalenceCache) InvalidateCachedPredicateItemForPodAdd(pod *v1.Pod,
// GeneralPredicates: will always be affected by adding a new pod
invalidPredicates := sets.NewString("GeneralPredicates")
// MaxPDVolumeCountPredicate: we check the volumes of pod to make decision.
for _, vol := range pod.Spec.Volumes {
if vol.PersistentVolumeClaim != nil {
invalidPredicates.Insert("MaxEBSVolumeCount", "MaxGCEPDVolumeCount", "MaxAzureDiskVolumeCount")
} else {
if vol.AWSElasticBlockStore != nil {
invalidPredicates.Insert("MaxEBSVolumeCount")
}
if vol.GCEPersistentDisk != nil {
invalidPredicates.Insert("MaxGCEPDVolumeCount")
}
if vol.AzureDisk != nil {
invalidPredicates.Insert("MaxAzureDiskVolumeCount")
}
}
}
ec.InvalidateCachedPredicateItem(nodeName, invalidPredicates)
}

50
plugin/pkg/scheduler/factory/factory.go
View File

@ -71,11 +71,11 @@ const (
)
var (
serviceAffinitySet = sets.NewString("ServiceAffinity")
maxPDVolumeCountPredicateSet = sets.NewString("MaxPDVolumeCountPredicate")
matchInterPodAffinitySet = sets.NewString("MatchInterPodAffinity")
generalPredicatesSets = sets.NewString("GeneralPredicates")
noDiskConflictSet = sets.NewString("NoDiskConflict")
serviceAffinitySet = sets.NewString("ServiceAffinity")
matchInterPodAffinitySet = sets.NewString("MatchInterPodAffinity")
generalPredicatesSets = sets.NewString("GeneralPredicates")
noDiskConflictSet = sets.NewString("NoDiskConflict")
maxPDVolumeCountPredicateKeys = []string{"MaxGCEPDVolumeCount", "MaxAzureDiskVolumeCount", "MaxEBSVolumeCount"}
)
// configFactory is the default implementation of the scheduler.Configurator interface.
@ -384,7 +384,11 @@ func (c *configFactory) onPvDelete(obj interface{}) {
}
func (c *configFactory) invalidatePredicatesForPv(pv *v1.PersistentVolume) {
invalidPredicates := sets.NewString("MaxPDVolumeCountPredicate")
// You could have a PVC that points to a PV, but the PV object doesn't exist.
// So when the PV object gets added, we can recount.
invalidPredicates := sets.NewString()
// PV types which impact MaxPDVolumeCountPredicate
if pv.Spec.AWSElasticBlockStore != nil {
invalidPredicates.Insert("MaxEBSVolumeCount")
}
@ -395,6 +399,14 @@ func (c *configFactory) invalidatePredicatesForPv(pv *v1.PersistentVolume) {
invalidPredicates.Insert("MaxAzureDiskVolumeCount")
}
// If PV contains zone related label, it may impact cached NoVolumeZoneConflict
for k := range pv.ObjectMeta.Labels {
if k == kubeletapis.LabelZoneFailureDomain || k == kubeletapis.LabelZoneRegion {
invalidPredicates.Insert("NoVolumeZoneConflict")
break
}
}
if utilfeature.DefaultFeatureGate.Enabled(features.VolumeScheduling) {
// Add/delete impacts the available PVs to choose from
invalidPredicates.Insert(predicates.CheckVolumeBinding)
@ -458,24 +470,34 @@ func (c *configFactory) onPvcDelete(obj interface{}) {
}
func (c *configFactory) invalidatePredicatesForPvc(pvc *v1.PersistentVolumeClaim) {
if pvc.Spec.VolumeName != "" {
c.equivalencePodCache.InvalidateCachedPredicateItemOfAllNodes(maxPDVolumeCountPredicateSet)
// We need to do this here because the ecache uses PVC uid as part of equivalence hash of pod
// The binded volume type may change
invalidPredicates := sets.NewString(maxPDVolumeCountPredicateKeys...)
// // The binded volume's label may change
invalidPredicates.Insert("NoVolumeZoneConflict")
if utilfeature.DefaultFeatureGate.Enabled(features.VolumeScheduling) {
// Add/delete impacts the available PVs to choose from
invalidPredicates.Insert(predicates.CheckVolumeBinding)
}
c.equivalencePodCache.InvalidateCachedPredicateItemOfAllNodes(invalidPredicates)
}
func (c *configFactory) invalidatePredicatesForPvcUpdate(old, new *v1.PersistentVolumeClaim) {
invalidPredicates := sets.NewString()
if utilfeature.DefaultFeatureGate.Enabled(features.VolumeScheduling) {
if old.Spec.VolumeName != new.Spec.VolumeName {
if old.Spec.VolumeName != new.Spec.VolumeName {
if utilfeature.DefaultFeatureGate.Enabled(features.VolumeScheduling) {
// PVC volume binding has changed
invalidPredicates.Insert(predicates.CheckVolumeBinding)
}
// The binded volume type may change
invalidPredicates.Insert(maxPDVolumeCountPredicateKeys...)
// The binded volume's label may change
invalidPredicates.Insert("NoVolumeZoneConflict")
}
if invalidPredicates.Len() > 0 {
c.equivalencePodCache.InvalidateCachedPredicateItemOfAllNodes(invalidPredicates)
}
c.equivalencePodCache.InvalidateCachedPredicateItemOfAllNodes(invalidPredicates)
}
func (c *configFactory) onServiceAdd(obj interface{}) {
@ -541,7 +563,7 @@ func (c *configFactory) addPodToCache(obj interface{}) {
c.podQueue.AssignedPodAdded(pod)
// NOTE: Updating equivalence cache of addPodToCache has been
// handled optimistically in InvalidateCachedPredicateItemForPodAdd.
// handled optimistically in: plugin/pkg/scheduler/scheduler.go#assume()
}
func (c *configFactory) updatePodInCache(oldObj, newObj interface{}) {