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 22import os 23import iotests 24 25class 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 106if __name__ == '__main__': 107 iotests.main(supported_fmts=["qcow2"], 108 supported_protocols=["file"]) 109