From c9398d15ffe25c397815ffdf0a94653eb30963d3 Mon Sep 17 00:00:00 2001
From: Fiona Ebner <f.ebner@proxmox.com>
Date: Fri, 6 Dec 2024 17:25:32 +0100
Subject: [PATCH] clone: be explicit about source format when cloning EFI disk

Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
---
 PVE/QemuServer.pm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/PVE/QemuServer.pm b/PVE/QemuServer.pm
index 9c8078b2..968db8eb 100644
--- a/PVE/QemuServer.pm
+++ b/PVE/QemuServer.pm
@@ -8486,7 +8486,7 @@ sub clone_disk {
 		# better for Ceph if block size is not too small, see bug #3324
 		my $bs = 1024*1024;
 
-		my $cmd = ['qemu-img', 'dd', '-n', '-O', $dst_format];
+		my $cmd = ['qemu-img', 'dd', '-n', '-f', $src_format, '-O', $dst_format];
 
 		if ($src_format eq 'qcow2' && $snapname) {
 		    die "cannot clone qcow2 EFI disk snapshot - requires QEMU >= 6.2\n"