Nested virtualization - Prevent migration

[acebmxer]

So i just tried to apply the xcp-ng host updates release today.. I had an issue unable to apply updates as a vm could not migrate...

The problem was i had Nested Virtualization enabled on the vm. This was enabled for testing and forgot to disabled. However the error was not clear.

I am noting this to come back to when my xcp-pulse is further along.

vm.migrate
{
  "vm": "fb72a8d7-a039-849f-b547-24fc56f056ba",
  "migrationNetwork": "172b1b75-18cf-eed1-0a8c-0aca5e16f4e9",
  "targetHost": "c1372ec6-3651-4481-808b-34293e53e144"
}
{
  "code": "VM_IS_IMMOBILE",
  "params": [
    "OpaqueRef:1571e2f7-c235-dc10-d766-8883ddd99fd0"
  ],
  "task": {
    "uuid": "2b031b83-6b30-4a26-29c7-a19bf963ceb0",
    "name_label": "Async.VM.pool_migrate",
    "name_description": "",
    "allowed_operations": [],
    "current_operations": {},
    "created": "20260908T20:23:39Z",
    "finished": "20260908T20:23:39Z",
    "status": "failure",
    "resident_on": "OpaqueRef:119546e4-e0fd-adc7-d42a-b17c4efe789d",
    "progress": 1,
    "type": "<none/>",
    "result": "",
    "error_info": [
      "VM_IS_IMMOBILE",
      "OpaqueRef:1571e2f7-c235-dc10-d766-8883ddd99fd0"
    ],
    "other_config": {},
    "subtask_of": "OpaqueRef:NULL",
    "subtasks": [],
    "backtrace": "(((process xapi)(filename ocaml/xapi/xapi_vm_lifecycle.ml)(line 758))((process xapi)(filename ocaml/xapi/xapi_vm_helpers.ml)(line 1657))((process xapi)(filename fun.ml)(line 33))((process xapi)(filename fun.ml)(line 38))((process xapi)(filename ocaml/xapi/helpers.ml)(line 1825))((process xapi)(filename ocaml/xapi/xapi_vm_helpers.ml)(line 1656))((process xapi)(filename ocaml/xapi/message_forwarding.ml)(line 2584))((process xapi)(filename ocaml/xapi/rbac.ml)(line 228))((process xapi)(filename ocaml/xapi/rbac.ml)(line 238))((process xapi)(filename ocaml/xapi/server_helpers.ml)(line 78)))"
  },
  "message": "VM_IS_IMMOBILE(OpaqueRef:1571e2f7-c235-dc10-d766-8883ddd99fd0)",
  "name": "XapiError",
  "stack": "XapiError: VM_IS_IMMOBILE(OpaqueRef:1571e2f7-c235-dc10-d766-8883ddd99fd0)
    at XapiError.wrap (file:///opt/xen-orchestra/packages/xen-api/_XapiError.mjs:16:12)
    at default (file:///opt/xen-orchestra/packages/xen-api/_getTaskResult.mjs:13:29)
    at Xapi._addRecordToCache (file:///opt/xen-orchestra/packages/xen-api/index.mjs:1329:24)
    at file:///opt/xen-orchestra/packages/xen-api/index.mjs:1363:14
    at Array.forEach (<anonymous>)
    at Xapi._processEvents (file:///opt/xen-orchestra/packages/xen-api/index.mjs:1353:12)
    at Xapi._watchEvents (file:///opt/xen-orchestra/packages/xen-api/index.mjs:1560:14)"
}