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 vm.add_object('iothread,id=iothread0') 44 vm.add_blockdev(f'file,filename={img},node-name=file') 45 vm.add_blockdev(f'{iotests.imgfmt},file=file,node-name=fmt') 46 vm.add_blockdev('raw,file=file,node-name=ro,read-only=on') 47 vm.add_device(f'id=scsi0,driver=virtio-scsi,iothread=iothread0') 48 vm.launch() 49 50 vm.qmp_log('nbd-server-start', 51 addr={'type': 'unix', 'data': {'path': socket}}, 52 filters=(iotests.filter_qmp_testfiles, )) 53 vm.qmp_log('query-block-exports') 54 55 iotests.log('\n=== Create a read-only NBD export ===') 56 57 vm.qmp_log('block-export-add', id='export0', type='nbd', node_name='fmt') 58 vm.qmp_log('query-block-exports') 59 60 iotests.qemu_nbd_list_log('-k', socket) 61 62 iotests.log('\n=== Try a few invalid things ===') 63 64 vm.qmp_log('block-export-add', id='#invalid', type='nbd', node_name='fmt') 65 vm.qmp_log('block-export-add', id='export0', type='nbd', node_name='fmt') 66 vm.qmp_log('block-export-add', id='export1', type='nbd', node_name='ro', 67 writable=True) 68 vm.qmp_log('block-export-del', id='export1') 69 vm.qmp_log('query-block-exports') 70 71 iotests.log('\n=== Move export to an iothread ===') 72 73 vm.qmp_log('device_add', id='sda', driver='scsi-hd', drive='fmt') 74 vm.qmp_log('query-block-exports') 75 iotests.qemu_nbd_list_log('-k', socket) 76 77 iotests.log('\n=== Add a writable export ===') 78 79 # This fails because share-rw=off 80 vm.qmp_log('block-export-add', id='export1', type='nbd', node_name='fmt', 81 name='export1', writable=True, writethrough=True, 82 description='This is the writable second export') 83 84 vm.qmp_log('device_del', id='sda') 85 event = vm.event_wait(name="DEVICE_DELETED", 86 match={'data': {'device': 'sda'}}) 87 iotests.log(event, filters=[iotests.filter_qmp_event]) 88 vm.qmp_log('device_add', id='sda', driver='scsi-hd', drive='fmt', 89 share_rw=True) 90 91 # Now it should work 92 vm.qmp_log('block-export-add', id='export1', type='nbd', node_name='fmt', 93 name='export1', writable=True, writethrough=True, 94 description='This is the writable second export') 95 96 vm.qmp_log('query-block-exports') 97 iotests.qemu_nbd_list_log('-k', socket) 98 99 iotests.log('\n=== Connect qemu-io to export1, try removing exports ===') 100 101 nbd_url = f'nbd+unix:///export1?socket={socket}' 102 qemu_io = iotests.QemuIoInteractive('-f', 'raw', nbd_url) 103 104 iotests.log(qemu_io.cmd('read -P 0x11 0 4k'), 105 filters=[iotests.filter_qemu_io]) 106 iotests.log(qemu_io.cmd('write -P 0x22 4k 4k'), 107 filters=[iotests.filter_qemu_io]) 108 109 vm.qmp_log('block-export-del', id='export1') 110 vm.qmp_log('block-export-del', id='export0') 111 iotests.log(vm.get_qmp_events_filtered()) 112 qemu_io.close() 113 114 vm.qmp_log('query-block-exports') 115 iotests.qemu_nbd_list_log('-k', socket) 116 117 iotests.log('\n=== Connect qemu-io again, try force removing ===') 118 119 qemu_io = iotests.QemuIoInteractive('-f', 'raw', nbd_url) 120 vm.qmp_log('block-export-del', id='export1') 121 vm.qmp_log('block-export-del', id='export1', mode='hard') 122 123 # This should fail now 124 iotests.log(qemu_io.cmd('read -P 0x11 0 4k')) 125 qemu_io.close() 126 127 vm.qmp_log('query-block-exports') 128 iotests.qemu_nbd_list_log('-k', socket) 129 130 iotests.log('\n=== Shut down QEMU ===') 131 vm.shutdown() 132