alexlebens/external-snapshotter
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This commit is contained in:
xing-yang
2020-08-30 01:46:57 +00:00
parent c2ba707e71
commit 1ba5602b10
1 changed files with 11 additions and 7 deletions
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18
pkg/common-controller/snapshot_controller.go
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@@ -198,10 +198,7 @@ func (ctrl *csiSnapshotCommonController) syncSnapshot(snapshot *crdv1.VolumeSnap
return err
}
// Proceed with snapshot deletion only if snapshot is not in the middled of being
// created from a PVC with a finalizer. This is to ensure that the PVC finalizer
// can be removed even if a delete snapshot request is received before create
// snapshot has completed.
// Proceed with snapshot deletion and remove finalizers when needed
if snapshot.ObjectMeta.DeletionTimestamp != nil {
return ctrl.processSnapshotWithDeletionTimestamp(snapshot)
}
@@ -1310,9 +1307,16 @@ func (ctrl *csiSnapshotCommonController) removeSnapshotFinalizer(snapshot *crdv1
return nil
}
// If we are here, it means we are going to remove finalizers from the snapshot so that the snapshot can be deleted.
// We need to check if there is still PVC finalizer that needs to be removed before removing the snapshot finalizers.
// Once snapshot is deleted, there won't be any snapshot update event that can trigger the PVC finalizer removal.
// NOTE(xyang): We have to make sure PVC finalizer is deleted before
// the VolumeSnapshot API object is deleted. Once the VolumeSnapshot
// API object is deleted, there won't be any VolumeSnapshot update
// event that can trigger the PVC finalizer removal any more.
// We also can't remove PVC finalizer too early. PVC finalizer should
// not be removed if a VolumeSnapshot API object is still using it.
// If we are here, it means we are going to remove finalizers from the
// VolumeSnapshot API object so that the VolumeSnapshot API object can
// be deleted. This means we no longer need to keep the PVC finalizer
// for this particular snapshot.
if err := ctrl.checkandRemovePVCFinalizer(snapshot, true); err != nil {
klog.Errorf("removeSnapshotFinalizer: error check and remove PVC finalizer for snapshot [%s]: %v", snapshot.Name, err)
// Log an event and keep the original error from checkandRemovePVCFinalizer