| # Functional test that hotplugs a virtio blk disk and checks it on a Linux |
| # guest |
| # |
| # Copyright (c) 2021 Red Hat, Inc. |
| # Copyright (c) Yandex |
| # |
| # This work is licensed under the terms of the GNU GPL, version 2 or |
| # later. See the COPYING file in the top-level directory. |
| |
| import time |
| |
| from avocado_qemu import LinuxTest |
| |
| |
| class HotPlug(LinuxTest): |
| def blockdev_add(self) -> None: |
| self.vm.cmd('blockdev-add', **{ |
| 'driver': 'null-co', |
| 'size': 1073741824, |
| 'node-name': 'disk' |
| }) |
| |
| def assert_vda(self) -> None: |
| self.ssh_command('test -e /sys/block/vda') |
| |
| def assert_no_vda(self) -> None: |
| with self.assertRaises(AssertionError): |
| self.assert_vda() |
| |
| def plug(self) -> None: |
| args = { |
| 'driver': 'virtio-blk-pci', |
| 'drive': 'disk', |
| 'id': 'virtio-disk0', |
| 'bus': 'pci.1', |
| 'addr': 1 |
| } |
| |
| self.assert_no_vda() |
| self.vm.cmd('device_add', args) |
| try: |
| self.assert_vda() |
| except AssertionError: |
| time.sleep(1) |
| self.assert_vda() |
| |
| def unplug(self) -> None: |
| self.vm.cmd('device_del', id='virtio-disk0') |
| |
| self.vm.event_wait('DEVICE_DELETED', 1.0, |
| match={'data': {'device': 'virtio-disk0'}}) |
| |
| self.assert_no_vda() |
| |
| def test(self) -> None: |
| """ |
| :avocado: tags=arch:x86_64 |
| :avocado: tags=machine:q35 |
| :avocado: tags=accel:kvm |
| """ |
| self.require_accelerator('kvm') |
| self.vm.add_args('-accel', 'kvm') |
| self.vm.add_args('-device', 'pcie-pci-bridge,id=pci.1,bus=pcie.0') |
| |
| self.launch_and_wait() |
| self.blockdev_add() |
| |
| self.plug() |
| self.unplug() |
