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Merge pull request #871 from sameshai/bugfix-778

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external-snapshotter constantly retrying CreateSnapshot calls on error w/o backoff
This commit is contained in:
Kubernetes Prow Robot
2023-06-29 17:25:45 -07:00
committed by GitHub
parent dd523a00ef 7fac9cdaf8
commit 5d5431f39e
1 changed files with 4 additions and 13 deletions
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17
pkg/sidecar-controller/snapshot_controller_base.go
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@@ -41,7 +41,6 @@ import (
groupsnapshotlisters "github.com/kubernetes-csi/external-snapshotter/client/v6/listers/volumegroupsnapshot/v1alpha1"
snapshotlisters "github.com/kubernetes-csi/external-snapshotter/client/v6/listers/volumesnapshot/v1"
"github.com/kubernetes-csi/external-snapshotter/v6/pkg/snapshotter"
"github.com/kubernetes-csi/external-snapshotter/v6/pkg/utils"
)
type csiSnapshotSideCarController struct {
@@ -116,20 +115,12 @@ func NewCSISnapshotSideCarController(
cache.ResourceEventHandlerFuncs{
AddFunc: func(obj interface{}) { ctrl.enqueueContentWork(obj) },
UpdateFunc: func(oldObj, newObj interface{}) {
// If the CSI driver fails to create a snapshot and returns a failure (indicated by content.Status.Error), 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.
// Considering the object is modified more than once during the workflow we are not relying on the
// "AnnVolumeSnapshotBeingCreated" annotation. Instead we will just check if newobj status has error
// and avoid the immediate re-queue. This allows the retry to happen with exponential backoff.
newSnapContent := newObj.(*crdv1.VolumeSnapshotContent)
if newSnapContent.Status != nil && newSnapContent.Status.Error != nil {
oldSnapContent := oldObj.(*crdv1.VolumeSnapshotContent)
_, newExists := newSnapContent.ObjectMeta.Annotations[utils.AnnVolumeSnapshotBeingCreated]
_, oldExists := oldSnapContent.ObjectMeta.Annotations[utils.AnnVolumeSnapshotBeingCreated]
if !newExists && oldExists {
return
}
return
}
ctrl.enqueueContentWork(newObj)
},