fix(xo-server/vm.convertToTemplate): handle VBD_IS_EMPTY (#6808)

Fixes https://xcp-ng.org/forum/post/61653

CHANGELOG.unreleased.md

@@ -11,6 +11,8 @@
 
 > Users must be able to say: “I had this issue, happy to know it's fixed”
 
+- [VM] Fix `VBD_IS_EMPTY` error when converting to template [Forum#61653](https://xcp-ng.org/forum/post/61653) (PR [#6808](https://github.com/vatesfr/xen-orchestra/pull/6808))
+
 ### Packages to release
 
 > When modifying a package, add it here with its release type.
@@ -27,4 +29,6 @@
 
 <!--packages-start-->
 
+- xo-server patch
+
 <!--packages-end-->

packages/xo-server/src/api/vm.mjs

@@ -883,7 +883,8 @@ export async function convertToTemplate({ vm }) {
 
   // Attempts to eject all removable media
   const ignoreNotRemovable = error => {
-    if (error.code !== 'VBD_NOT_REMOVABLE_MEDIA') {
+    const { code } = error
+    if (code !== 'VBD_IS_EMPTY' && code !== 'VBD_NOT_REMOVABLE_MEDIA') {
       throw error
     }
   }