1#!/usr/bin/env python3 2# group: rw quick export 3# 4# Copyright (C) 2020 Red Hat, Inc. 5# 6# This program is free software; you can redistribute it and/or modify 7# it under the terms of the GNU General Public License as published by 8# the Free Software Foundation; either version 2 of the License, or 9# (at your option) any later version. 10# 11# This program is distributed in the hope that it will be useful, 12# but WITHOUT ANY WARRANTY; without even the implied warranty of 13# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14# GNU General Public License for more details. 15# 16# You should have received a copy of the GNU General Public License 17# along with this program. If not, see <http://www.gnu.org/licenses/>. 18# 19# Creator/Owner: Kevin Wolf <kwolf@redhat.com> 20# 21# Test the block export QAPI interfaces 22 23import iotests 24import os 25 26# Need a writable image format (but not vpc, which rounds the image size, nor 27# luks which requires special command lines) 28iotests.script_initialize( 29 supported_fmts=['generic'], 30 unsupported_fmts=['luks', 'vpc'], 31 supported_platforms=['linux'], 32) 33 34with iotests.FilePath('image') as img, \ 35 iotests.FilePath('socket', base_dir=iotests.sock_dir) as socket, \ 36 iotests.VM() as vm: 37 38 iotests.qemu_img('create', '-f', iotests.imgfmt, img, '64M') 39 iotests.qemu_io_log('-f', iotests.imgfmt, '-c', 'write -P 0x11 0 4k', img) 40 41 iotests.log('=== Launch VM ===') 42 43 virtio_scsi_device = iotests.get_virtio_scsi_device() 44 45 vm.add_object('iothread,id=iothread0') 46 vm.add_blockdev(f'file,filename={img},node-name=file') 47 vm.add_blockdev(f'{iotests.imgfmt},file=file,node-name=fmt') 48 vm.add_blockdev('raw,file=file,node-name=ro,read-only=on') 49 vm.add_device(f'id=scsi0,driver={virtio_scsi_device},iothread=iothread0') 50 vm.launch() 51 52 vm.qmp_log('nbd-server-start', 53 addr={'type': 'unix', 'data': {'path': socket}}, 54 filters=(iotests.filter_qmp_testfiles, )) 55 vm.qmp_log('query-block-exports') 56 57 iotests.log('\n=== Create a read-only NBD export ===') 58 59 vm.qmp_log('block-export-add', id='export0', type='nbd', node_name='fmt') 60 vm.qmp_log('query-block-exports') 61 62 iotests.qemu_nbd_list_log('-k', socket) 63 64 iotests.log('\n=== Try a few invalid things ===') 65 66 vm.qmp_log('block-export-add', id='#invalid', type='nbd', node_name='fmt') 67 vm.qmp_log('block-export-add', id='export0', type='nbd', node_name='fmt') 68 vm.qmp_log('block-export-add', id='export1', type='nbd', node_name='ro', 69 writable=True) 70 vm.qmp_log('block-export-del', id='export1') 71 vm.qmp_log('query-block-exports') 72 73 iotests.log('\n=== Move export to an iothread ===') 74 75 vm.qmp_log('device_add', id='sda', driver='scsi-hd', drive='fmt') 76 vm.qmp_log('query-block-exports') 77 iotests.qemu_nbd_list_log('-k', socket) 78 79 iotests.log('\n=== Add a writable export ===') 80 81 # This fails because share-rw=off 82 vm.qmp_log('block-export-add', id='export1', type='nbd', node_name='fmt', 83 name='export1', writable=True, writethrough=True, 84 description='This is the writable second export') 85 86 vm.qmp_log('device_del', id='sda') 87 event = vm.event_wait(name="DEVICE_DELETED", 88 match={'data': {'device': 'sda'}}) 89 iotests.log(event, filters=[iotests.filter_qmp_event]) 90 vm.qmp_log('device_add', id='sda', driver='scsi-hd', drive='fmt', 91 share_rw=True) 92 93 # Now it should work 94 vm.qmp_log('block-export-add', id='export1', type='nbd', node_name='fmt', 95 name='export1', writable=True, writethrough=True, 96 description='This is the writable second export') 97 98 vm.qmp_log('query-block-exports') 99 iotests.qemu_nbd_list_log('-k', socket) 100 101 iotests.log('\n=== Connect qemu-io to export1, try removing exports ===') 102 103 nbd_url = f'nbd+unix:///export1?socket={socket}' 104 qemu_io = iotests.QemuIoInteractive('-f', 'raw', nbd_url) 105 106 iotests.log(qemu_io.cmd('read -P 0x11 0 4k'), 107 filters=[iotests.filter_qemu_io]) 108 iotests.log(qemu_io.cmd('write -P 0x22 4k 4k'), 109 filters=[iotests.filter_qemu_io]) 110 111 vm.qmp_log('block-export-del', id='export1') 112 vm.qmp_log('block-export-del', id='export0') 113 iotests.log(vm.get_qmp_events_filtered()) 114 qemu_io.close() 115 116 vm.qmp_log('query-block-exports') 117 iotests.qemu_nbd_list_log('-k', socket) 118 119 iotests.log('\n=== Connect qemu-io again, try force removing ===') 120 121 qemu_io = iotests.QemuIoInteractive('-f', 'raw', nbd_url) 122 vm.qmp_log('block-export-del', id='export1') 123 vm.qmp_log('block-export-del', id='export1', mode='hard') 124 125 # This should fail now 126 iotests.log(qemu_io.cmd('read -P 0x11 0 4k')) 127 qemu_io.close() 128 129 vm.qmp_log('query-block-exports') 130 iotests.qemu_nbd_list_log('-k', socket) 131 132 iotests.log('\n=== Shut down QEMU ===') 133 vm.shutdown() 134