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#!/usr/bin/env python3
# group: rw quick
#
# Tests that "bdrv_drain_all" doesn't drain block jobs
#
# Copyright (C) 2015 Red Hat, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
import os
import iotests
class TestStopWithBlockJob(iotests.QMPTestCase):
test_img = os.path.join(iotests.test_dir, 'test.img')
target_img = os.path.join(iotests.test_dir, 'target.img')
base_img = os.path.join(iotests.test_dir, 'base.img')
overlay_img = os.path.join(iotests.test_dir, 'overlay.img')
def setUp(self):
iotests.qemu_img('create', '-f', iotests.imgfmt, self.base_img, "1G")
iotests.qemu_img('create', '-f', iotests.imgfmt, self.test_img,
"-b", self.base_img, '-F', iotests.imgfmt)
iotests.qemu_io('-f', iotests.imgfmt, '-c', 'write -P0x5d 1M 128M',
self.test_img)
self.vm = iotests.VM()
self.vm.add_object('throttle-group,id=tg0,x-bps-total=1024')
source_drive = 'driver=throttle,' \
'node-name=source,' \
'throttle-group=tg0,' \
f'file.driver={iotests.imgfmt},' \
f'file.file.filename={self.test_img}'
self.vm.add_drive(None, source_drive)
self.vm.launch()
def tearDown(self):
self.vm.shutdown()
for img in (self.test_img, self.target_img, self.base_img,
self.overlay_img):
iotests.try_remove(img)
def do_test_stop(self, cmd, **args):
"""Test 'stop' while block job is running on a throttled drive.
The 'stop' command shouldn't drain the job"""
self.vm.cmd(cmd, **args)
self.vm.cmd("stop")
result = self.vm.qmp("query-block-jobs")
self.assert_qmp(result, 'return[0]/status', 'running')
self.assert_qmp(result, 'return[0]/ready', False)
def test_drive_mirror(self):
self.do_test_stop("drive-mirror", device="drive0",
target=self.target_img, format=iotests.imgfmt,
sync="full", buf_size=65536)
def test_drive_backup(self):
# Limit max-chunk and max-workers so that block-copy will not
# launch so many workers working on so much data each that
# stop's bdrv_drain_all() would finish the job
self.do_test_stop("drive-backup", device="drive0",
target=self.target_img, format=iotests.imgfmt,
sync="full",
x_perf={'max-chunk': 65536,
'max-workers': 8})
def test_block_commit(self):
# Add overlay above the source node so that we actually use a
# commit job instead of a mirror job
iotests.qemu_img('create', '-f', iotests.imgfmt, self.overlay_img,
'1G')
self.vm.cmd('blockdev-add', {
'node-name': 'overlay',
'driver': iotests.imgfmt,
'file': {
'driver': 'file',
'filename': self.overlay_img
}
})
self.vm.cmd('blockdev-snapshot',
node='source', overlay='overlay')
self.do_test_stop('block-commit', device='drive0', top_node='source')
if __name__ == '__main__':
iotests.main(supported_fmts=["qcow2"],
supported_protocols=["file"])
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