handle rdm disks

main.go

@@ -9,6 +9,7 @@ import (
 	"log"
 	"net/url"
 	"os"
+	"reflect"
 	"strings"
 	"time"
 	_ "time/tzdata"
@@ -142,8 +143,7 @@ func processVMs(client *govmomi.Client) error {
 			}
 		}
 
-		if vm.Config != nil && vm.Config.Hardware.Device != nil {
+		if vm.Config != nil && len(vm.Config.Hardware.Device) > 0 {
-			if len(vm.Config.Hardware.Device) > 0 {
 			for _, device := range vm.Config.Hardware.Device {
 				//fmt.Printf("device: %v\n", device)
 				//fmt.Println("Type of variable1:", reflect.TypeOf(device))
@@ -174,7 +174,9 @@ func processVMs(client *govmomi.Client) error {
 					// See https://github.com/vmware/govmomi/blob/main/vim25/types/enum.go#L7538
 					// Sharing can be sharingNone or sharingMultiWriter
 					backing := vdisk.VirtualDevice.Backing
-						sharingType := backing.(*types.VirtualDiskFlatVer2BackingInfo).Sharing
+					fmt.Println("Type of backing:", reflect.TypeOf(backing))
+					if info, ok := backing.(*types.VirtualDiskFlatVer2BackingInfo); ok {
+						sharingType := info.Sharing
 
 						if sharingType == "sharingMultiWriter" {
 							fmt.Printf("VM %s is using MultiWriter on disk %ss\n", vm.Name, diskLabel)
@@ -192,8 +194,8 @@ func processVMs(client *govmomi.Client) error {
 			}
 		} else if vm.Config == nil {
 			fmt.Printf("vm %s has no config\n", vm.Name)
-		} else if vm.Config.Hardware.Device == nil {
+		} else {
-			fmt.Printf("vm %s has no hardware device\n", vm.Name)
+			fmt.Printf("vm %s is something strange\n", vm.Name)
 		}
 
 	}