From df5d2d64b228c9a52a23713e10968d86463b3bf8 Mon Sep 17 00:00:00 2001
From: Anatol Belski <anbelski@linux.microsoft.com>
Date: Tue, 24 Mar 2026 17:10:08 +0100
Subject: [PATCH] block: vhd: impl Resizable for FixedVhdDiskAsync

Fixed VHD does not support resize, return UnsupportedFeature.

Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com>
---
 block/src/fixed_vhd_async.rs | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/block/src/fixed_vhd_async.rs b/block/src/fixed_vhd_async.rs
index bba4f07de..c265636c8 100644
--- a/block/src/fixed_vhd_async.rs
+++ b/block/src/fixed_vhd_async.rs
@@ -78,6 +78,16 @@ impl disk_file::Geometry for FixedVhdDiskAsync {}
 
 impl disk_file::SparseCapable for FixedVhdDiskAsync {}
 
+impl disk_file::Resizable for FixedVhdDiskAsync {
+    fn resize(&mut self, _size: u64) -> BlockResult<()> {
+        Err(BlockError::new(
+            BlockErrorKind::UnsupportedFeature,
+            DiskFileError::ResizeError(std::io::Error::other("resize not supported for fixed VHD")),
+        )
+        .with_op(ErrorOp::Resize))
+    }
+}
+
 pub struct FixedVhdAsync {
     raw_file_async: RawFileAsync,
     size: u64,