tests/qemu-iotests/129

   1 #!/usr/bin/env python3
   2 # group: rw quick
   3 #
   4 # Tests that "bdrv_drain_all" doesn't drain block jobs
   5 #
   6 # Copyright (C) 2015 Red Hat, Inc.
   7 #
   8 # This program is free software; you can redistribute it and/or modify
   9 # it under the terms of the GNU General Public License as published by
  10 # the Free Software Foundation; either version 2 of the License, or
  11 # (at your option) any later version.
  12 #
  13 # This program is distributed in the hope that it will be useful,
  14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 # GNU General Public License for more details.
  17 #
  18 # You should have received a copy of the GNU General Public License
  19 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 #
  21
  22 import os
  23 import iotests
  24
  25 class TestStopWithBlockJob(iotests.QMPTestCase):
  26     test_img = os.path.join(iotests.test_dir, 'test.img')
  27     target_img = os.path.join(iotests.test_dir, 'target.img')
  28     base_img = os.path.join(iotests.test_dir, 'base.img')
  29     overlay_img = os.path.join(iotests.test_dir, 'overlay.img')
  30
  31     def setUp(self):
  32         iotests.qemu_img('create', '-f', iotests.imgfmt, self.base_img, "1G")
  33         iotests.qemu_img('create', '-f', iotests.imgfmt, self.test_img,
  34                          "-b", self.base_img, '-F', iotests.imgfmt)
  35         iotests.qemu_io('-f', iotests.imgfmt, '-c', 'write -P0x5d 1M 128M',
  36                         self.test_img)
  37         self.vm = iotests.VM()
  38         self.vm.add_object('throttle-group,id=tg0,x-bps-total=1024')
  39
  40         source_drive = 'driver=throttle,' \
  41                        'node-name=source,' \
  42                        'throttle-group=tg0,' \
  43                        f'file.driver={iotests.imgfmt},' \
  44                        f'file.file.filename={self.test_img}'
  45
  46         self.vm.add_drive(None, source_drive)
  47         self.vm.launch()
  48
  49     def tearDown(self):
  50         self.vm.shutdown()
  51         for img in (self.test_img, self.target_img, self.base_img,
  52                     self.overlay_img):
  53             iotests.try_remove(img)
  54
  55     def do_test_stop(self, cmd, **args):
  56         """Test 'stop' while block job is running on a throttled drive.
  57         The 'stop' command shouldn't drain the job"""
  58         result = self.vm.qmp(cmd, **args)
  59         self.assert_qmp(result, 'return', {})
  60
  61         result = self.vm.qmp("stop")
  62         self.assert_qmp(result, 'return', {})
  63         result = self.vm.qmp("query-block-jobs")
  64
  65         self.assert_qmp(result, 'return[0]/status', 'running')
  66         self.assert_qmp(result, 'return[0]/ready', False)
  67
  68     def test_drive_mirror(self):
  69         self.do_test_stop("drive-mirror", device="drive0",
  70                           target=self.target_img, format=iotests.imgfmt,
  71                           sync="full", buf_size=65536)
  72
  73     def test_drive_backup(self):
  74         # Limit max-chunk and max-workers so that block-copy will not
  75         # launch so many workers working on so much data each that
  76         # stop's bdrv_drain_all() would finish the job
  77         self.do_test_stop("drive-backup", device="drive0",
  78                           target=self.target_img, format=iotests.imgfmt,
  79                           sync="full",
  80                           x_perf={'max-chunk': 65536,
  81                                   'max-workers': 8})
  82
  83     def test_block_commit(self):
  84         # Add overlay above the source node so that we actually use a
  85         # commit job instead of a mirror job
  86
  87         iotests.qemu_img('create', '-f', iotests.imgfmt, self.overlay_img,
  88                          '1G')
  89
  90         result = self.vm.qmp('blockdev-add', **{
  91             'node-name': 'overlay',
  92             'driver': iotests.imgfmt,
  93             'file': {
  94                 'driver': 'file',
  95                 'filename': self.overlay_img
  96             }
  97         })
  98         self.assert_qmp(result, 'return', {})
  99
 100         result = self.vm.qmp('blockdev-snapshot',
 101                              node='source', overlay='overlay')
 102         self.assert_qmp(result, 'return', {})
 103
 104         self.do_test_stop('block-commit', device='drive0', top_node='source')
 105
 106 if __name__ == '__main__':
 107     iotests.main(supported_fmts=["qcow2"],
 108                  supported_protocols=["file"])