| #!/usr/bin/env python3 |
| # |
| # 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. |
| |
| from qemu_test import LinuxKernelTest, Asset, exec_command_and_wait_for_pattern |
| |
| |
| class HotPlugBlk(LinuxKernelTest): |
| |
| ASSET_KERNEL = Asset( |
| ('https://archives.fedoraproject.org/pub/archive/fedora/linux/releases' |
| '/31/Server/x86_64/os/images/pxeboot/vmlinuz'), |
| 'd4738d03dbbe083ca610d0821d0a8f1488bebbdccef54ce33e3adb35fda00129') |
| |
| ASSET_INITRD = Asset( |
| ('https://archives.fedoraproject.org/pub/archive/fedora/linux/releases' |
| '/31/Server/x86_64/os/images/pxeboot/initrd.img'), |
| '277cd6c7adf77c7e63d73bbb2cded8ef9e2d3a2f100000e92ff1f8396513cd8b') |
| |
| def blockdev_add(self) -> None: |
| self.vm.cmd('blockdev-add', **{ |
| 'driver': 'null-co', |
| 'size': 1073741824, |
| 'node-name': 'disk' |
| }) |
| |
| def assert_vda(self) -> None: |
| exec_command_and_wait_for_pattern(self, 'while ! test -e /sys/block/vda ;' |
| ' do sleep 0.2 ; done', '# ') |
| |
| def assert_no_vda(self) -> None: |
| exec_command_and_wait_for_pattern(self, 'while test -e /sys/block/vda ;' |
| ' do sleep 0.2 ; done', '# ') |
| |
| 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) |
| self.wait_for_console_pattern('virtio_blk virtio0: [vda]') |
| 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: |
| self.require_accelerator('kvm') |
| self.set_machine('q35') |
| |
| self.vm.add_args('-accel', 'kvm') |
| self.vm.add_args('-device', 'pcie-pci-bridge,id=pci.1,bus=pcie.0') |
| self.vm.add_args('-m', '1G') |
| self.vm.add_args('-append', 'console=ttyS0 rd.rescue') |
| |
| self.launch_kernel(self.ASSET_KERNEL.fetch(), |
| self.ASSET_INITRD.fetch(), |
| wait_for='Entering emergency mode.') |
| self.wait_for_console_pattern('# ') |
| |
| self.blockdev_add() |
| |
| self.plug() |
| self.unplug() |
| |
| |
| if __name__ == '__main__': |
| LinuxKernelTest.main() |
