diff --git a/changelogs/fragments/12119-xenserver-vdi-type-fallback.yml b/changelogs/fragments/12119-xenserver-vdi-type-fallback.yml
new file mode 100644
index 0000000000..5fce89736d
--- /dev/null
+++ b/changelogs/fragments/12119-xenserver-vdi-type-fallback.yml
@@ -0,0 +1,2 @@
+bugfixes:
+  - xenserver_guest_info - use fallback chain for determining VDI format from ``sm_config`` keys ``image-format``, ``vdi_type``, ``type``, defaulting to ``raw`` (https://github.com/ansible-collections/community.general/pull/12119, https://github.com/ansible-collections/community.general/pull/12215).
diff --git a/plugins/module_utils/_xenserver.py b/plugins/module_utils/_xenserver.py
index 31d76724ec..a2f69b91f4 100644
--- a/plugins/module_utils/_xenserver.py
+++ b/plugins/module_utils/_xenserver.py
@@ -456,7 +456,13 @@ def gather_vm_facts(module: AnsibleModule, vm_params):
                 "os_device": vm_vbd_params["device"],
                 "uuid": vm_vbd_params["VDI"]["uuid"],
                 "vbd_userdevice": vm_vbd_params["userdevice"],
-                "vdi_type": vm_vbd_params["VDI"].get("sm_config", {}).get("vdi_type", ""),
+                "vdi_type": vm_vbd_params["VDI"]["sm_config"].get(
+                    "image-format",
+                    vm_vbd_params["VDI"]["sm_config"].get(
+                        "vdi_type",
+                        vm_vbd_params["VDI"]["sm_config"].get("type", "raw"),
+                    ),
+                ),
             }
 
             vm_facts["disks"].append(vm_disk_params)
diff --git a/plugins/modules/xenserver_guest.py b/plugins/modules/xenserver_guest.py
index 39a3b0a917..55aa3f3116 100644
--- a/plugins/modules/xenserver_guest.py
+++ b/plugins/modules/xenserver_guest.py
@@ -406,7 +406,9 @@ instance:
           "size": 42949672960,
           "sr": "Local storage",
           "sr_uuid": "0af1245e-bdb0-ba33-1446-57a962ec4075",
-          "vbd_userdevice": "0"
+          "uuid": "3f98b388-b2c0-4355-9a01-15c0e61b5a76",
+          "vbd_userdevice": "0",
+          "vdi_type": "vhd"
         },
         {
           "name": "testvm_11-1",
@@ -415,7 +417,9 @@ instance:
           "size": 42949672960,
           "sr": "Local storage",
           "sr_uuid": "0af1245e-bdb0-ba33-1446-57a962ec4075",
-          "vbd_userdevice": "1"
+          "uuid": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
+          "vbd_userdevice": "1",
+          "vdi_type": "vhd"
         }
       ],
       "domid": "56",
diff --git a/plugins/modules/xenserver_guest_powerstate.py b/plugins/modules/xenserver_guest_powerstate.py
index 8d87e3938b..375e48d2b3 100644
--- a/plugins/modules/xenserver_guest_powerstate.py
+++ b/plugins/modules/xenserver_guest_powerstate.py
@@ -103,7 +103,9 @@ instance:
           "size": 42949672960,
           "sr": "Local storage",
           "sr_uuid": "0af1245e-bdb0-ba33-1446-57a962ec4075",
-          "vbd_userdevice": "0"
+          "uuid": "3f98b388-b2c0-4355-9a01-15c0e61b5a76",
+          "vbd_userdevice": "0",
+          "vdi_type": "vhd"
         },
         {
           "name": "windows-template-testing-1",
@@ -112,7 +114,9 @@ instance:
           "size": 42949672960,
           "sr": "Local storage",
           "sr_uuid": "0af1245e-bdb0-ba33-1446-57a962ec4075",
-          "vbd_userdevice": "1"
+          "uuid": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
+          "vbd_userdevice": "1",
+          "vdi_type": "vhd"
         }
       ],
       "domid": "56",