From 8d804287d34080630cbe420032ff8e7e74271724 Mon Sep 17 00:00:00 2001
From: Christian Huffman <chuffman@redhat.com>
Date: Tue, 16 Feb 2021 10:57:41 -0500
Subject: [PATCH] Updates the Azure File minimum size for premium accounts

---
 pkg/volume/azure_file/azure_file.go      | 5 +++--
 pkg/volume/azure_file/azure_provision.go | 9 +++++++--
 2 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/pkg/volume/azure_file/azure_file.go b/pkg/volume/azure_file/azure_file.go
index 95e88c14a95..08b02a782f6 100644
--- a/pkg/volume/azure_file/azure_file.go
+++ b/pkg/volume/azure_file/azure_file.go
@@ -55,8 +55,9 @@ var _ volume.PersistentVolumePlugin = &azureFilePlugin{}
 var _ volume.ExpandableVolumePlugin = &azureFilePlugin{}
 
 const (
-	azureFilePluginName    = "kubernetes.io/azure-file"
-	defaultSecretNamespace = "default"
+	azureFilePluginName     = "kubernetes.io/azure-file"
+	defaultSecretNamespace  = "default"
+	minimumPremiumShareSize = 100 // GB
 )
 
 func getPath(uid types.UID, volName string, host volume.VolumeHost) string {
diff --git a/pkg/volume/azure_file/azure_provision.go b/pkg/volume/azure_file/azure_provision.go
index 6b4c8f834a2..a9dc31b6909 100644
--- a/pkg/volume/azure_file/azure_provision.go
+++ b/pkg/volume/azure_file/azure_provision.go
@@ -207,10 +207,15 @@ func (a *azureFileProvisioner) Provision(selectedNode *v1.Node, allowedTopologie
 		resourceGroup = a.options.PVC.ObjectMeta.Annotations[resourceGroupAnnotation]
 	}
 
+	fileShareSize := int(requestGiB)
 	// when use azure file premium, account kind should be specified as FileStorage
 	accountKind := string(storage.StorageV2)
 	if strings.HasPrefix(strings.ToLower(sku), "premium") {
 		accountKind = string(storage.FileStorage)
+		// when using azure file premium, the shares have a minimum size
+		if fileShareSize < minimumPremiumShareSize {
+			fileShareSize = minimumPremiumShareSize
+		}
 	}
 
 	accountOptions := &azure.AccountOptions{
@@ -225,7 +230,7 @@ func (a *azureFileProvisioner) Provision(selectedNode *v1.Node, allowedTopologie
 	shareOptions := &fileclient.ShareOptions{
 		Name:       shareName,
 		Protocol:   storage.SMB,
-		RequestGiB: requestGiB,
+		RequestGiB: fileShareSize,
 	}
 
 	account, key, err := a.azureProvider.CreateFileShare(accountOptions, shareOptions)
@@ -252,7 +257,7 @@ func (a *azureFileProvisioner) Provision(selectedNode *v1.Node, allowedTopologie
 			PersistentVolumeReclaimPolicy: a.options.PersistentVolumeReclaimPolicy,
 			AccessModes:                   a.options.PVC.Spec.AccessModes,
 			Capacity: v1.ResourceList{
-				v1.ResourceName(v1.ResourceStorage): resource.MustParse(fmt.Sprintf("%dGi", requestGiB)),
+				v1.ResourceName(v1.ResourceStorage): resource.MustParse(fmt.Sprintf("%dGi", fileShareSize)),
 			},
 			PersistentVolumeSource: v1.PersistentVolumeSource{
 				AzureFile: &v1.AzureFilePersistentVolumeSource{