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xemu/tests/qemu-iotests/030
John Snow 01809194a0 iotests: fix race in 030 
the stop_test case tests that we can resume a block-stream
command after it has stopped/paused due to error. We cannot
always reliably query it before it finishes after resume, though,
so make this a conditional.

The important thing is that we are still testing that it has stopped,
and that it finishes successfully after we send a resume command.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2015-11-18 15:54:15 +01:00

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#!/usr/bin/env python
#
# Tests for image streaming.
#
# Copyright (C) 2012 IBM Corp.
#
# 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 time
import os
import iotests
from iotests import qemu_img, qemu_io
backing_img = os.path.join(iotests.test_dir, 'backing.img')
mid_img = os.path.join(iotests.test_dir, 'mid.img')
test_img = os.path.join(iotests.test_dir, 'test.img')
class TestSingleDrive(iotests.QMPTestCase):
image_len = 1 * 1024 * 1024 # MB
def setUp(self):
iotests.create_image(backing_img, TestSingleDrive.image_len)
qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, mid_img)
qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % mid_img, test_img)
qemu_io('-f', 'raw', '-c', 'write -P 0x1 0 512', backing_img)
self.vm = iotests.VM().add_drive("blkdebug::" + test_img)
self.vm.launch()
def tearDown(self):
self.vm.shutdown()
os.remove(test_img)
os.remove(mid_img)
os.remove(backing_img)
def test_stream(self):
self.assert_no_active_block_jobs()
result = self.vm.qmp('block-stream', device='drive0')
self.assert_qmp(result, 'return', {})
self.wait_until_completed()
self.assert_no_active_block_jobs()
self.vm.shutdown()
self.assertEqual(qemu_io('-f', 'raw', '-c', 'map', backing_img),
qemu_io('-f', iotests.imgfmt, '-c', 'map', test_img),
'image file map does not match backing file after streaming')
def test_stream_pause(self):
self.assert_no_active_block_jobs()
self.vm.pause_drive('drive0')
result = self.vm.qmp('block-stream', device='drive0')
self.assert_qmp(result, 'return', {})
result = self.vm.qmp('block-job-pause', device='drive0')
self.assert_qmp(result, 'return', {})
time.sleep(1)
result = self.vm.qmp('query-block-jobs')
offset = self.dictpath(result, 'return[0]/offset')
time.sleep(1)
result = self.vm.qmp('query-block-jobs')
self.assert_qmp(result, 'return[0]/offset', offset)
result = self.vm.qmp('block-job-resume', device='drive0')
self.assert_qmp(result, 'return', {})
self.vm.resume_drive('drive0')
self.wait_until_completed()
self.assert_no_active_block_jobs()
self.vm.shutdown()
self.assertEqual(qemu_io('-f', 'raw', '-c', 'map', backing_img),
qemu_io('-f', iotests.imgfmt, '-c', 'map', test_img),
'image file map does not match backing file after streaming')
def test_stream_partial(self):
self.assert_no_active_block_jobs()
result = self.vm.qmp('block-stream', device='drive0', base=mid_img)
self.assert_qmp(result, 'return', {})
self.wait_until_completed()
self.assert_no_active_block_jobs()
self.vm.shutdown()
self.assertEqual(qemu_io('-f', iotests.imgfmt, '-c', 'map', mid_img),
qemu_io('-f', iotests.imgfmt, '-c', 'map', test_img),
'image file map does not match backing file after streaming')
def test_device_not_found(self):
result = self.vm.qmp('block-stream', device='nonexistent')
self.assert_qmp(result, 'error/class', 'DeviceNotFound')
class TestSmallerBackingFile(iotests.QMPTestCase):
backing_len = 1 * 1024 * 1024 # MB
image_len = 2 * backing_len
def setUp(self):
iotests.create_image(backing_img, self.backing_len)
qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img, str(self.image_len))
self.vm = iotests.VM().add_drive(test_img)
self.vm.launch()
# If this hangs, then you are missing a fix to complete streaming when the
# end of the backing file is reached.
def test_stream(self):
self.assert_no_active_block_jobs()
result = self.vm.qmp('block-stream', device='drive0')
self.assert_qmp(result, 'return', {})
self.wait_until_completed()
self.assert_no_active_block_jobs()
self.vm.shutdown()
class TestErrors(iotests.QMPTestCase):
image_len = 2 * 1024 * 1024 # MB
# this should match STREAM_BUFFER_SIZE/512 in block/stream.c
STREAM_BUFFER_SIZE = 512 * 1024
def create_blkdebug_file(self, name, event, errno):
file = open(name, 'w')
file.write('''
[inject-error]
state = "1"
event = "%s"
errno = "%d"
immediately = "off"
once = "on"
sector = "%d"
[set-state]
state = "1"
event = "%s"
new_state = "2"
[set-state]
state = "2"
event = "%s"
new_state = "1"
''' % (event, errno, self.STREAM_BUFFER_SIZE / 512, event, event))
file.close()
class TestEIO(TestErrors):
def setUp(self):
self.blkdebug_file = backing_img + ".blkdebug"
iotests.create_image(backing_img, TestErrors.image_len)
self.create_blkdebug_file(self.blkdebug_file, "read_aio", 5)
qemu_img('create', '-f', iotests.imgfmt,
'-o', 'backing_file=blkdebug:%s:%s,backing_fmt=raw'
% (self.blkdebug_file, backing_img),
test_img)
self.vm = iotests.VM().add_drive(test_img)
self.vm.launch()
def tearDown(self):
self.vm.shutdown()
os.remove(test_img)
os.remove(backing_img)
os.remove(self.blkdebug_file)
def test_report(self):
self.assert_no_active_block_jobs()
result = self.vm.qmp('block-stream', device='drive0')
self.assert_qmp(result, 'return', {})
completed = False
error = False
while not completed:
for event in self.vm.get_qmp_events(wait=True):
if event['event'] == 'BLOCK_JOB_ERROR':
self.assert_qmp(event, 'data/device', 'drive0')
self.assert_qmp(event, 'data/operation', 'read')
error = True
elif event['event'] == 'BLOCK_JOB_COMPLETED':
self.assertTrue(error, 'job completed unexpectedly')
self.assert_qmp(event, 'data/type', 'stream')
self.assert_qmp(event, 'data/device', 'drive0')
self.assert_qmp(event, 'data/error', 'Input/output error')
self.assert_qmp(event, 'data/offset', self.STREAM_BUFFER_SIZE)
self.assert_qmp(event, 'data/len', self.image_len)
completed = True
self.assert_no_active_block_jobs()
self.vm.shutdown()
def test_ignore(self):
self.assert_no_active_block_jobs()
result = self.vm.qmp('block-stream', device='drive0', on_error='ignore')
self.assert_qmp(result, 'return', {})
error = False
completed = False
while not completed:
for event in self.vm.get_qmp_events(wait=True):
if event['event'] == 'BLOCK_JOB_ERROR':
self.assert_qmp(event, 'data/device', 'drive0')
self.assert_qmp(event, 'data/operation', 'read')
result = self.vm.qmp('query-block-jobs')
self.assert_qmp(result, 'return[0]/paused', False)
error = True
elif event['event'] == 'BLOCK_JOB_COMPLETED':
self.assertTrue(error, 'job completed unexpectedly')
self.assert_qmp(event, 'data/type', 'stream')
self.assert_qmp(event, 'data/device', 'drive0')
self.assert_qmp(event, 'data/error', 'Input/output error')
self.assert_qmp(event, 'data/offset', self.image_len)
self.assert_qmp(event, 'data/len', self.image_len)
completed = True
self.assert_no_active_block_jobs()
self.vm.shutdown()
def test_stop(self):
self.assert_no_active_block_jobs()
result = self.vm.qmp('block-stream', device='drive0', on_error='stop')
self.assert_qmp(result, 'return', {})
error = False
completed = False
while not completed:
for event in self.vm.get_qmp_events(wait=True):
if event['event'] == 'BLOCK_JOB_ERROR':
error = True
self.assert_qmp(event, 'data/device', 'drive0')
self.assert_qmp(event, 'data/operation', 'read')
result = self.vm.qmp('query-block-jobs')
self.assert_qmp(result, 'return[0]/paused', True)
self.assert_qmp(result, 'return[0]/offset', self.STREAM_BUFFER_SIZE)
self.assert_qmp(result, 'return[0]/io-status', 'failed')
result = self.vm.qmp('block-job-resume', device='drive0')
self.assert_qmp(result, 'return', {})
result = self.vm.qmp('query-block-jobs')
if result == {'return': []}:
# Race; likely already finished. Check.
continue
self.assert_qmp(result, 'return[0]/paused', False)
self.assert_qmp(result, 'return[0]/io-status', 'ok')
elif event['event'] == 'BLOCK_JOB_COMPLETED':
self.assertTrue(error, 'job completed unexpectedly')
self.assert_qmp(event, 'data/type', 'stream')
self.assert_qmp(event, 'data/device', 'drive0')
self.assert_qmp_absent(event, 'data/error')
self.assert_qmp(event, 'data/offset', self.image_len)
self.assert_qmp(event, 'data/len', self.image_len)
completed = True
self.assert_no_active_block_jobs()
self.vm.shutdown()
def test_enospc(self):
self.assert_no_active_block_jobs()
result = self.vm.qmp('block-stream', device='drive0', on_error='enospc')
self.assert_qmp(result, 'return', {})
completed = False
error = False
while not completed:
for event in self.vm.get_qmp_events(wait=True):
if event['event'] == 'BLOCK_JOB_ERROR':
self.assert_qmp(event, 'data/device', 'drive0')
self.assert_qmp(event, 'data/operation', 'read')
error = True
elif event['event'] == 'BLOCK_JOB_COMPLETED':
self.assertTrue(error, 'job completed unexpectedly')
self.assert_qmp(event, 'data/type', 'stream')
self.assert_qmp(event, 'data/device', 'drive0')
self.assert_qmp(event, 'data/error', 'Input/output error')
self.assert_qmp(event, 'data/offset', self.STREAM_BUFFER_SIZE)
self.assert_qmp(event, 'data/len', self.image_len)
completed = True
self.assert_no_active_block_jobs()
self.vm.shutdown()
class TestENOSPC(TestErrors):
def setUp(self):
self.blkdebug_file = backing_img + ".blkdebug"
iotests.create_image(backing_img, TestErrors.image_len)
self.create_blkdebug_file(self.blkdebug_file, "read_aio", 28)
qemu_img('create', '-f', iotests.imgfmt,
'-o', 'backing_file=blkdebug:%s:%s,backing_fmt=raw'
% (self.blkdebug_file, backing_img),
test_img)
self.vm = iotests.VM().add_drive(test_img)
self.vm.launch()
def tearDown(self):
self.vm.shutdown()
os.remove(test_img)
os.remove(backing_img)
os.remove(self.blkdebug_file)
def test_enospc(self):
self.assert_no_active_block_jobs()
result = self.vm.qmp('block-stream', device='drive0', on_error='enospc')
self.assert_qmp(result, 'return', {})
error = False
completed = False
while not completed:
for event in self.vm.get_qmp_events(wait=True):
if event['event'] == 'BLOCK_JOB_ERROR':
self.assert_qmp(event, 'data/device', 'drive0')
self.assert_qmp(event, 'data/operation', 'read')
result = self.vm.qmp('query-block-jobs')
self.assert_qmp(result, 'return[0]/paused', True)
self.assert_qmp(result, 'return[0]/offset', self.STREAM_BUFFER_SIZE)
self.assert_qmp(result, 'return[0]/io-status', 'nospace')
result = self.vm.qmp('block-job-resume', device='drive0')
self.assert_qmp(result, 'return', {})
result = self.vm.qmp('query-block-jobs')
self.assert_qmp(result, 'return[0]/paused', False)
self.assert_qmp(result, 'return[0]/io-status', 'ok')
error = True
elif event['event'] == 'BLOCK_JOB_COMPLETED':
self.assertTrue(error, 'job completed unexpectedly')
self.assert_qmp(event, 'data/type', 'stream')
self.assert_qmp(event, 'data/device', 'drive0')
self.assert_qmp_absent(event, 'data/error')
self.assert_qmp(event, 'data/offset', self.image_len)
self.assert_qmp(event, 'data/len', self.image_len)
completed = True
self.assert_no_active_block_jobs()
self.vm.shutdown()
class TestStreamStop(iotests.QMPTestCase):
image_len = 8 * 1024 * 1024 * 1024 # GB
def setUp(self):
qemu_img('create', backing_img, str(TestStreamStop.image_len))
qemu_io('-f', 'raw', '-c', 'write -P 0x1 0 32M', backing_img)
qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img)
qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0x1 32M 32M', test_img)
self.vm = iotests.VM().add_drive("blkdebug::" + test_img)
self.vm.launch()
def tearDown(self):
self.vm.shutdown()
os.remove(test_img)
os.remove(backing_img)
def test_stream_stop(self):
self.assert_no_active_block_jobs()
self.vm.pause_drive('drive0')
result = self.vm.qmp('block-stream', device='drive0')
self.assert_qmp(result, 'return', {})
time.sleep(0.1)
events = self.vm.get_qmp_events(wait=False)
self.assertEqual(events, [], 'unexpected QMP event: %s' % events)
self.cancel_and_wait(resume=True)
class TestSetSpeed(iotests.QMPTestCase):
image_len = 80 * 1024 * 1024 # MB
def setUp(self):
qemu_img('create', backing_img, str(TestSetSpeed.image_len))
qemu_io('-f', 'raw', '-c', 'write -P 0x1 0 32M', backing_img)
qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img)
qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0x1 32M 32M', test_img)
self.vm = iotests.VM().add_drive('blkdebug::' + test_img)
self.vm.launch()
def tearDown(self):
self.vm.shutdown()
os.remove(test_img)
os.remove(backing_img)
# This is a short performance test which is not run by default.
# Invoke "IMGFMT=qed ./030 TestSetSpeed.perf_test_throughput"
def perf_test_throughput(self):
self.assert_no_active_block_jobs()
result = self.vm.qmp('block-stream', device='drive0')
self.assert_qmp(result, 'return', {})
result = self.vm.qmp('block-job-set-speed', device='drive0', speed=8 * 1024 * 1024)
self.assert_qmp(result, 'return', {})
self.wait_until_completed()
self.assert_no_active_block_jobs()
def test_set_speed(self):
self.assert_no_active_block_jobs()
self.vm.pause_drive('drive0')
result = self.vm.qmp('block-stream', device='drive0')
self.assert_qmp(result, 'return', {})
# Default speed is 0
result = self.vm.qmp('query-block-jobs')
self.assert_qmp(result, 'return[0]/device', 'drive0')
self.assert_qmp(result, 'return[0]/speed', 0)
result = self.vm.qmp('block-job-set-speed', device='drive0', speed=8 * 1024 * 1024)
self.assert_qmp(result, 'return', {})
# Ensure the speed we set was accepted
result = self.vm.qmp('query-block-jobs')
self.assert_qmp(result, 'return[0]/device', 'drive0')
self.assert_qmp(result, 'return[0]/speed', 8 * 1024 * 1024)
self.cancel_and_wait(resume=True)
self.vm.pause_drive('drive0')
# Check setting speed in block-stream works
result = self.vm.qmp('block-stream', device='drive0', speed=4 * 1024 * 1024)
self.assert_qmp(result, 'return', {})
result = self.vm.qmp('query-block-jobs')
self.assert_qmp(result, 'return[0]/device', 'drive0')
self.assert_qmp(result, 'return[0]/speed', 4 * 1024 * 1024)
self.cancel_and_wait(resume=True)
def test_set_speed_invalid(self):
self.assert_no_active_block_jobs()
result = self.vm.qmp('block-stream', device='drive0', speed=-1)
self.assert_qmp(result, 'error/class', 'GenericError')
self.assert_no_active_block_jobs()
result = self.vm.qmp('block-stream', device='drive0')
self.assert_qmp(result, 'return', {})
result = self.vm.qmp('block-job-set-speed', device='drive0', speed=-1)
self.assert_qmp(result, 'error/class', 'GenericError')
self.cancel_and_wait()
if __name__ == '__main__':
iotests.main(supported_fmts=['qcow2', 'qed'])
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