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restart claim sync when PVC is updated

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We should not rely on syncUnboundClaim() to do nothing after it updates
PVC with a default storage class until next re-sync but instead restart
the sync explicitly to make sure we hit isDelayBindingMode() and
findBestMatchForClaim() immediately right after the PVC update.
This commit is contained in:
Roman Bednar 2022-10-17 14:05:34 +02:00
parent ea231f5252
commit f5693a4008
1 changed files with 14 additions and 8 deletions
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22
pkg/controller/volume/persistentvolume/pv_controller.go
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@ -353,9 +353,14 @@ func (ctrl *PersistentVolumeController) syncUnboundClaim(ctx context.Context, cl
if utilfeature.DefaultFeatureGate.Enabled(features.RetroactiveDefaultStorageClass) {
klog.V(4).Infof("FeatureGate[%s] is enabled, attempting to assign storage class to unbound PersistentVolumeClaim[%s]", features.RetroactiveDefaultStorageClass, claimToClaimKey(claim))
if claim, err = ctrl.assignDefaultStorageClass(claim); err != nil {
updated, err := ctrl.assignDefaultStorageClass(claim)
if err != nil {
return fmt.Errorf("can't update PersistentVolumeClaim[%q]: %w", claimToClaimKey(claim), err)
}
if updated {
klog.V(4).Infof("PersistentVolumeClaim[%q] update successful, restarting claim sync", claimToClaimKey(claim))
return nil
}
}
switch {
@ -929,9 +934,9 @@ func (ctrl *PersistentVolumeController) updateVolumePhaseWithEvent(volume *v1.Pe
// assignDefaultStorageClass updates the claim storage class if there is any, the claim is updated to the API server.
// Ignores claims that already have a storage class.
// TODO: if resync is ever changed to a larger period, we might need to change how we set the default class on existing unbound claims
func (ctrl *PersistentVolumeController) assignDefaultStorageClass(claim *v1.PersistentVolumeClaim) (*v1.PersistentVolumeClaim, error) {
func (ctrl *PersistentVolumeController) assignDefaultStorageClass(claim *v1.PersistentVolumeClaim) (bool, error) {
if claim.Spec.StorageClassName != nil {
return claim, nil
return false, nil
}
class, err := util.GetDefaultClass(ctrl.classLister)
@ -939,20 +944,21 @@ func (ctrl *PersistentVolumeController) assignDefaultStorageClass(claim *v1.Pers
// It is safe to ignore errors here because it means we either could not list SCs or there is more than one default.
// TODO: do not ignore errors after this PR is merged: https://github.com/kubernetes/kubernetes/pull/110559
klog.V(4).Infof("failed to get default storage class: %v", err)
return claim, nil
return false, nil
} else if class == nil {
klog.V(4).Infof("can not assign storage class to PersistentVolumeClaim[%s]: default storage class not found", claimToClaimKey(claim))
return claim, nil
return false, nil
}
klog.V(4).Infof("assigning StorageClass[%s] to PersistentVolumeClaim[%s]", class.Name, claimToClaimKey(claim))
claim.Spec.StorageClassName = &class.Name
newClaim, err := ctrl.kubeClient.CoreV1().PersistentVolumeClaims(claim.GetNamespace()).Update(context.TODO(), claim, metav1.UpdateOptions{})
_, err = ctrl.kubeClient.CoreV1().PersistentVolumeClaims(claim.GetNamespace()).Update(context.TODO(), claim, metav1.UpdateOptions{})
if err != nil {
return claim, err
return false, err
}
return newClaim, nil
klog.V(4).Infof("successfully assigned StorageClass[%s] to PersistentVolumeClaim[%s]", claimToClaimKey(claim), class.Name)
return true, nil
}
// bindVolumeToClaim modifies given volume to be bound to a claim and saves it to