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external-snapshotter constantly retrying CreateSnapshot calls on error w/o backoff

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Signed-off-by: zhucan <zhucan.k8s@gmail.com>
This commit is contained in:
zhucan
2022-02-14 10:38:57 +08:00
parent 35996b0643
commit e46df1bdab
1 changed files with 17 additions and 2 deletions
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17
pkg/sidecar-controller/snapshot_controller_base.go
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@@ -25,6 +25,7 @@ import (
storageinformers "github.com/kubernetes-csi/external-snapshotter/client/v4/informers/externalversions/volumesnapshot/v1"
storagelisters "github.com/kubernetes-csi/external-snapshotter/client/v4/listers/volumesnapshot/v1"
"github.com/kubernetes-csi/external-snapshotter/v4/pkg/snapshotter"
"github.com/kubernetes-csi/external-snapshotter/v4/pkg/utils"
v1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/errors"
@@ -95,7 +96,21 @@ func NewCSISnapshotSideCarController(
volumeSnapshotContentInformer.Informer().AddEventHandlerWithResyncPeriod(
cache.ResourceEventHandlerFuncs{
AddFunc: func(obj interface{}) { ctrl.enqueueContentWork(obj) },
UpdateFunc: func(oldObj, newObj interface{}) { ctrl.enqueueContentWork(newObj) },
UpdateFunc: func(oldObj, newObj interface{}) {
// If the CSI driver fails to create a snapshot and returns a failure, the CSI Snapshotter sidecar
// will remove the "AnnVolumeSnapshotBeingCreated" annotation from the VolumeSnapshotContent.
// This will trigger a VolumeSnapshotContent update and it will cause the obj to be re-queued immediately
// and CSI CreateSnapshot will be called again without exponential backoff.
// So we are skipping the re-queue here to avoid CreateSnapshot being called without exponential backoff.
newSnapContent := newObj.(*crdv1.VolumeSnapshotContent)
oldSnapContent := oldObj.(*crdv1.VolumeSnapshotContent)
_, newExists := newSnapContent.ObjectMeta.Annotations[utils.AnnVolumeSnapshotBeingCreated]
_, oldExists := oldSnapContent.ObjectMeta.Annotations[utils.AnnVolumeSnapshotBeingCreated]
if !newExists && oldExists {
return
}
ctrl.enqueueContentWork(newObj)
},
DeleteFunc: func(obj interface{}) { ctrl.enqueueContentWork(obj) },
},
ctrl.resyncPeriod,