tests/qemu-iotests/307

   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
  23 import iotests
  24 import os
  25
  26 # Need a writable image format (but not vpc, which rounds the image size, nor
  27 # luks which requires special command lines)
  28 iotests.script_initialize(
  29     supported_fmts=['generic'],
  30     unsupported_fmts=['luks', 'vpc'],
  31     supported_platforms=['linux'],
  32 )
  33
  34 with 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()