Added tests for modifying userdevice higher than 3 on ISO VBD

Signed-off-by: Damien Thenot <[email protected]>

tests/storage/userdevice/test_userdevice.py

@@ -0,0 +1,36 @@
+import pytest
+import logging
+
+# Requirements:
+# - one XCP-ng host
+
+class TestUserDevice:
+    def _check_iso(self, vm):
+        return vm.ssh_with_result(["test", "-e", "/sys/class/block/sr0"]).returncode == 0
+
+    def _get_vbd_iso(self, vm):
+        return vm.host.xe("vbd-list", {"vm-uuid": vm.uuid, "device": "xvdd"}, minimal=True)
+
+    def _set_userdevice(self, vm, vbd_uuid, userdevice):
+        logging.info("Setting userdevice for VBD {} of VM {} to {}".format(vbd_uuid, vm.uuid, userdevice))
+        vm.host.xe("vbd-param-set", {"userdevice": str(userdevice), "uuid": vbd_uuid})
+
+    @pytest.mark.small_vm
+    def test_sr0_exist(self, imported_vm):
+        vm = imported_vm
+        vm.start()
+        vm.wait_for_os_booted()
+        assert self._check_iso(vm)
+        vm.shutdown(verify=True)
+
+    @pytest.mark.small_vm
+    def test_change_userdevice(self, started_vm):
+        vm = started_vm
+
+        vbd_uuid = self._get_vbd_iso(vm)
+        vm.shutdown(verify=True)
+        self._set_userdevice(vm, vbd_uuid, 4)
+        vm.start()
+        vm.wait_for_os_booted()
+
+        assert self._check_iso(vm)