Fix Helm templates for empty bucket parameter

deploy/helm/templates/storageclass.yaml

@@ -11,7 +11,9 @@ provisioner: ru.yandex.s3.csi
 parameters:
   mounter: geesefs
   options: "{{ .Values.storageClass.mountOptions }}"
+{{- if .Values.storageClass.singleBucket }}
   bucket: "{{ .Values.storageClass.singleBucket }}"
+{{- end }}
   csi.storage.k8s.io/provisioner-secret-name: {{ .Values.secret.name }}
   csi.storage.k8s.io/provisioner-secret-namespace: {{ .Release.Namespace }}
   csi.storage.k8s.io/controller-publish-secret-name: {{ .Values.secret.name }}

pkg/driver/controllerserver.go

@@ -47,8 +47,8 @@ func (cs *controllerServer) CreateVolume(ctx context.Context, req *csi.CreateVol
 	prefix := ""
 
 	// check if bucket name is overridden
-	if nameOverride, ok := params[mounter.BucketKey]; ok {
-		bucketName = nameOverride
+	if params[mounter.BucketKey] != "" {
+		bucketName = params[mounter.BucketKey]
 		prefix = volumeID
 		volumeID = path.Join(bucketName, prefix)
 	}