tests/qemu-iotests/307

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