Sets default VM disk size to 12GB

main.go

@@ -19,6 +19,8 @@ const (
 
         memMB = "1024"
         cpus  = "1"
+
+	baseDiskSize = "12G"
 )
 
 type OSImage struct {
@@ -330,6 +332,17 @@ func createVM(name, osName, pubKeyPath string) {
                 panic(string(out))
         }
 
+	resizeCmd := exec.Command(
+		"qemu-img", "resize",
+		diskPath(name),
+		baseDiskSize,
+	)
+
+	if out, err := resizeCmd.CombinedOutput(); err != nil {
+		panic("disk resize failed:\n" + string(out))
+	}
+
+
         createCloudInitSeed(name, osName, vmPubKeyPath(name))
         fmt.Println("VM created:", name, "OS:", osName)
 }