fix(instance): change scratch volume logic

Author: remyleone

internal/namespaces/instance/v1/custom_server_create.go

@@ -375,7 +375,7 @@ func addDefaultVolumes(
 	needScratch := false
 	hasScratch := false
 	defaultVolumes := []*instance.VolumeServerTemplate(nil)
-	if serverType.ScratchStorageMaxSize != nil && *serverType.ScratchStorageMaxSize > 0 {
+	if shouldHaveScratchVolume(serverType) {
 		needScratch = true
 	}
 	for _, volume := range volumes {
@@ -411,6 +411,12 @@ func addDefaultVolumes(
 	return volumes
 }
 
+func shouldHaveScratchVolume(serverType *instance.ServerType) bool {
+	return serverType.ScratchStorageMaxSize != nil &&
+		*serverType.ScratchStorageMaxSize > 0 &&
+		*serverType.Gpu > 0
+}
+
 func validateImageServerTypeCompatibility(
 	image *instance.Image,
 	serverType *instance.ServerType,