Merge pull request #41232 from colemickens/automated-cherry-pick-of-#…

…40030-kubernetes-release-1.5

Automatic merge from submit-queue

Automated cherry pick of #40030

Cherry pick of #40030 on release-1.5.

#40030: azure disk: restrict length of name

pkg/volume/azure_dd/azure_provision.go

@@ -107,7 +107,8 @@ var _ volume.Provisioner = &azureDiskProvisioner{}
 func (a *azureDiskProvisioner) Provision() (*api.PersistentVolume, error) {
 	var sku, location, account string
 
-	name := volume.GenerateVolumeName(a.options.ClusterName, a.options.PVName, 255)
+	// maxLength = 79 - (4 for ".vhd") = 75
+	name := volume.GenerateVolumeName(a.options.ClusterName, a.options.PVName, 75)
 	capacity := a.options.PVC.Spec.Resources.Requests[api.ResourceName(api.ResourceStorage)]
 	requestBytes := capacity.Value()
 	requestGB := int(volume.RoundUpSize(requestBytes, 1024*1024*1024))