From c90f5a9e47f37f431f7793c633b16538a058bbc6 Mon Sep 17 00:00:00 2001
From: Anatol Belski <anbelski@linux.microsoft.com>
Date: Tue, 24 Mar 2026 15:21:08 +0100
Subject: [PATCH] vmm: Switch fixed VHD sync to DiskBackend::Next

Wire FixedVhdDiskSync through the new composable trait system.

Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com>
---
 vmm/src/device_manager.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/vmm/src/device_manager.rs b/vmm/src/device_manager.rs
index bdcd33602..72ce17b26 100644
--- a/vmm/src/device_manager.rs
+++ b/vmm/src/device_manager.rs
@@ -2729,10 +2729,10 @@ impl DeviceManager {
                         }
                     } else {
                         info!("Using synchronous fixed VHD disk file");
-                        DiskBackend::Legacy(Box::new(
+                        DiskBackend::Next(Box::new(
                             FixedVhdDiskSync::new(file)
                                 .map_err(DeviceManagerError::CreateFixedVhdDiskSync)?,
-                        ) as Box<dyn DiskFile>)
+                        ))
                     }
                 }
                 ImageType::Raw => {