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qemu/tests/qemu-iotests/041
Paolo Bonzini 9dfa9f5930 qemu-iotests: add testcases for mirroring on-source-error/on-target-error 
The new options are tested with blkdebug on both the source and the
target.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-10-24 10:26:22 +02:00

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#!/usr/bin/env python
#
# Tests for image mirroring.
#
# Copyright (C) 2012 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 time
import os
import iotests
from iotests import qemu_img, qemu_io
import struct
backing_img = os.path.join(iotests.test_dir, 'backing.img')
target_backing_img = os.path.join(iotests.test_dir, 'target-backing.img')
test_img = os.path.join(iotests.test_dir, 'test.img')
target_img = os.path.join(iotests.test_dir, 'target.img')
class ImageMirroringTestCase(iotests.QMPTestCase):
'''Abstract base class for image mirroring test cases'''
def assert_no_active_mirrors(self):
result = self.vm.qmp('query-block-jobs')
self.assert_qmp(result, 'return', [])
def cancel_and_wait(self, drive='drive0', wait_ready=True):
'''Cancel a block job and wait for it to finish'''
if wait_ready:
ready = False
while not ready:
for event in self.vm.get_qmp_events(wait=True):
if event['event'] == 'BLOCK_JOB_READY':
self.assert_qmp(event, 'data/type', 'mirror')
self.assert_qmp(event, 'data/device', drive)
ready = True
result = self.vm.qmp('block-job-cancel', device=drive,
force=not wait_ready)
self.assert_qmp(result, 'return', {})
cancelled = False
while not cancelled:
for event in self.vm.get_qmp_events(wait=True):
if event['event'] == 'BLOCK_JOB_COMPLETED' or \
event['event'] == 'BLOCK_JOB_CANCELLED':
self.assert_qmp(event, 'data/type', 'mirror')
self.assert_qmp(event, 'data/device', drive)
if wait_ready:
self.assertEquals(event['event'], 'BLOCK_JOB_COMPLETED')
self.assert_qmp(event, 'data/offset', self.image_len)
self.assert_qmp(event, 'data/len', self.image_len)
cancelled = True
self.assert_no_active_mirrors()
def complete_and_wait(self, drive='drive0', wait_ready=True):
'''Complete a block job and wait for it to finish'''
if wait_ready:
ready = False
while not ready:
for event in self.vm.get_qmp_events(wait=True):
if event['event'] == 'BLOCK_JOB_READY':
self.assert_qmp(event, 'data/type', 'mirror')
self.assert_qmp(event, 'data/device', drive)
ready = True
result = self.vm.qmp('block-job-complete', device=drive)
self.assert_qmp(result, 'return', {})
completed = False
while not completed:
for event in self.vm.get_qmp_events(wait=True):
if event['event'] == 'BLOCK_JOB_COMPLETED':
self.assert_qmp(event, 'data/type', 'mirror')
self.assert_qmp(event, 'data/device', drive)
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_mirrors()
def create_image(self, name, size):
file = open(name, 'w')
i = 0
while i < size:
sector = struct.pack('>l504xl', i / 512, i / 512)
file.write(sector)
i = i + 512
file.close()
def compare_images(self, img1, img2):
try:
qemu_img('convert', '-f', iotests.imgfmt, '-O', 'raw', img1, img1 + '.raw')
qemu_img('convert', '-f', iotests.imgfmt, '-O', 'raw', img2, img2 + '.raw')
file1 = open(img1 + '.raw', 'r')
file2 = open(img2 + '.raw', 'r')
return file1.read() == file2.read()
finally:
if file1 is not None:
file1.close()
if file2 is not None:
file2.close()
try:
os.remove(img1 + '.raw')
except OSError:
pass
try:
os.remove(img2 + '.raw')
except OSError:
pass
class TestSingleDrive(ImageMirroringTestCase):
image_len = 1 * 1024 * 1024 # MB
def setUp(self):
self.create_image(backing_img, TestSingleDrive.image_len)
qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % 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)
try:
os.remove(target_img)
except OSError:
pass
def test_complete(self):
self.assert_no_active_mirrors()
result = self.vm.qmp('drive-mirror', device='drive0', sync='full',
target=target_img)
self.assert_qmp(result, 'return', {})
self.complete_and_wait()
result = self.vm.qmp('query-block')
self.assert_qmp(result, 'return[0]/inserted/file', target_img)
self.vm.shutdown()
self.assertTrue(self.compare_images(test_img, target_img),
'target image does not match source after mirroring')
def test_cancel(self):
self.assert_no_active_mirrors()
result = self.vm.qmp('drive-mirror', device='drive0', sync='full',
target=target_img)
self.assert_qmp(result, 'return', {})
self.cancel_and_wait(wait_ready=False)
result = self.vm.qmp('query-block')
self.assert_qmp(result, 'return[0]/inserted/file', test_img)
self.vm.shutdown()
def test_cancel_after_ready(self):
self.assert_no_active_mirrors()
result = self.vm.qmp('drive-mirror', device='drive0', sync='full',
target=target_img)
self.assert_qmp(result, 'return', {})
self.cancel_and_wait()
result = self.vm.qmp('query-block')
self.assert_qmp(result, 'return[0]/inserted/file', test_img)
self.vm.shutdown()
self.assertTrue(self.compare_images(test_img, target_img),
'target image does not match source after mirroring')
def test_pause(self):
self.assert_no_active_mirrors()
result = self.vm.qmp('drive-mirror', device='drive0', sync='full',
target=target_img)
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.complete_and_wait()
self.vm.shutdown()
self.assertTrue(self.compare_images(test_img, target_img),
'target image does not match source after mirroring')
def test_large_cluster(self):
self.assert_no_active_mirrors()
qemu_img('create', '-f', iotests.imgfmt, '-o', 'cluster_size=%d,backing_file=%s'
% (TestSingleDrive.image_len, backing_img), target_img)
result = self.vm.qmp('drive-mirror', device='drive0', sync='full',
mode='existing', target=target_img)
self.assert_qmp(result, 'return', {})
self.complete_and_wait()
result = self.vm.qmp('query-block')
self.assert_qmp(result, 'return[0]/inserted/file', target_img)
self.vm.shutdown()
self.assertTrue(self.compare_images(test_img, target_img),
'target image does not match source after mirroring')
def test_medium_not_found(self):
result = self.vm.qmp('drive-mirror', device='ide1-cd0', sync='full',
target=target_img)
self.assert_qmp(result, 'error/class', 'GenericError')
def test_image_not_found(self):
result = self.vm.qmp('drive-mirror', device='drive0', sync='full',
mode='existing', target=target_img)
self.assert_qmp(result, 'error/class', 'GenericError')
def test_device_not_found(self):
result = self.vm.qmp('drive-mirror', device='nonexistent', sync='full',
target=target_img)
self.assert_qmp(result, 'error/class', 'DeviceNotFound')
class TestMirrorNoBacking(ImageMirroringTestCase):
image_len = 2 * 1024 * 1024 # MB
def complete_and_wait(self, drive='drive0', wait_ready=True):
self.create_image(target_backing_img, TestMirrorNoBacking.image_len)
return ImageMirroringTestCase.complete_and_wait(self, drive, wait_ready)
def compare_images(self, img1, img2):
self.create_image(target_backing_img, TestMirrorNoBacking.image_len)
return ImageMirroringTestCase.compare_images(self, img1, img2)
def setUp(self):
self.create_image(backing_img, TestMirrorNoBacking.image_len)
qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % 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(target_backing_img)
os.remove(target_img)
def test_complete(self):
self.assert_no_active_mirrors()
qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, target_img)
result = self.vm.qmp('drive-mirror', device='drive0', sync='full',
mode='existing', target=target_img)
self.assert_qmp(result, 'return', {})
self.complete_and_wait()
result = self.vm.qmp('query-block')
self.assert_qmp(result, 'return[0]/inserted/file', target_img)
self.vm.shutdown()
self.assertTrue(self.compare_images(test_img, target_img),
'target image does not match source after mirroring')
def test_cancel(self):
self.assert_no_active_mirrors()
qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, target_img)
result = self.vm.qmp('drive-mirror', device='drive0', sync='full',
mode='existing', target=target_img)
self.assert_qmp(result, 'return', {})
self.cancel_and_wait()
result = self.vm.qmp('query-block')
self.assert_qmp(result, 'return[0]/inserted/file', test_img)
self.vm.shutdown()
self.assertTrue(self.compare_images(test_img, target_img),
'target image does not match source after mirroring')
class TestReadErrors(ImageMirroringTestCase):
image_len = 2 * 1024 * 1024 # MB
# this should be a multiple of twice the default granularity
# so that we hit this offset first in state 1
MIRROR_GRANULARITY = 1024 * 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.MIRROR_GRANULARITY / 512, event, event))
file.close()
def setUp(self):
self.blkdebug_file = backing_img + ".blkdebug"
self.create_image(backing_img, TestReadErrors.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_read(self):
self.assert_no_active_mirrors()
result = self.vm.qmp('drive-mirror', device='drive0', sync='full',
target=target_img)
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_READY':
self.assertTrue(False, 'job completed unexpectedly')
elif event['event'] == 'BLOCK_JOB_COMPLETED':
self.assertTrue(error, 'job completed unexpectedly')
self.assert_qmp(event, 'data/type', 'mirror')
self.assert_qmp(event, 'data/device', 'drive0')
self.assert_qmp(event, 'data/error', 'Input/output error')
self.assert_qmp(event, 'data/len', self.image_len)
completed = True
self.assert_no_active_mirrors()
self.vm.shutdown()
def test_ignore_read(self):
self.assert_no_active_mirrors()
result = self.vm.qmp('drive-mirror', device='drive0', sync='full',
target=target_img, on_source_error='ignore')
self.assert_qmp(result, 'return', {})
event = self.vm.get_qmp_event(wait=True)
self.assertEquals(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)
self.complete_and_wait()
self.vm.shutdown()
def test_stop_read(self):
self.assert_no_active_mirrors()
result = self.vm.qmp('drive-mirror', device='drive0', sync='full',
target=target_img, on_source_error='stop')
self.assert_qmp(result, 'return', {})
error = False
ready = False
while not ready:
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]/io-status', 'failed')
result = self.vm.qmp('block-job-resume', device='drive0')
self.assert_qmp(result, 'return', {})
error = True
elif event['event'] == 'BLOCK_JOB_READY':
self.assertTrue(error, 'job completed unexpectedly')
self.assert_qmp(event, 'data/device', 'drive0')
ready = True
result = self.vm.qmp('query-block-jobs')
self.assert_qmp(result, 'return[0]/paused', False)
self.assert_qmp(result, 'return[0]/io-status', 'ok')
self.complete_and_wait(wait_ready=False)
self.assert_no_active_mirrors()
self.vm.shutdown()
class TestWriteErrors(ImageMirroringTestCase):
image_len = 2 * 1024 * 1024 # MB
# this should be a multiple of twice the default granularity
# so that we hit this offset first in state 1
MIRROR_GRANULARITY = 1024 * 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.MIRROR_GRANULARITY / 512, event, event))
file.close()
def setUp(self):
self.blkdebug_file = target_img + ".blkdebug"
self.create_image(backing_img, TestWriteErrors.image_len)
self.create_blkdebug_file(self.blkdebug_file, "write_aio", 5)
qemu_img('create', '-f', iotests.imgfmt, '-obacking_file=%s' %(backing_img), test_img)
self.vm = iotests.VM().add_drive(test_img)
self.target_img = 'blkdebug:%s:%s' % (self.blkdebug_file, target_img)
qemu_img('create', '-f', iotests.imgfmt, '-osize=%d' %(TestWriteErrors.image_len), target_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_write(self):
self.assert_no_active_mirrors()
result = self.vm.qmp('drive-mirror', device='drive0', sync='full',
mode='existing', target=self.target_img)
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', 'write')
error = True
elif event['event'] == 'BLOCK_JOB_READY':
self.assertTrue(False, 'job completed unexpectedly')
elif event['event'] == 'BLOCK_JOB_COMPLETED':
self.assertTrue(error, 'job completed unexpectedly')
self.assert_qmp(event, 'data/type', 'mirror')
self.assert_qmp(event, 'data/device', 'drive0')
self.assert_qmp(event, 'data/error', 'Input/output error')
self.assert_qmp(event, 'data/len', self.image_len)
completed = True
self.assert_no_active_mirrors()
self.vm.shutdown()
def test_ignore_write(self):
self.assert_no_active_mirrors()
result = self.vm.qmp('drive-mirror', device='drive0', sync='full',
mode='existing', target=self.target_img,
on_target_error='ignore')
self.assert_qmp(result, 'return', {})
event = self.vm.get_qmp_event(wait=True)
self.assertEquals(event['event'], 'BLOCK_JOB_ERROR')
self.assert_qmp(event, 'data/device', 'drive0')
self.assert_qmp(event, 'data/operation', 'write')
result = self.vm.qmp('query-block-jobs')
self.assert_qmp(result, 'return[0]/paused', False)
self.complete_and_wait()
self.vm.shutdown()
def test_stop_write(self):
self.assert_no_active_mirrors()
result = self.vm.qmp('drive-mirror', device='drive0', sync='full',
mode='existing', target=self.target_img,
on_target_error='stop')
self.assert_qmp(result, 'return', {})
error = False
ready = False
while not ready:
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', 'write')
result = self.vm.qmp('query-block-jobs')
self.assert_qmp(result, 'return[0]/paused', True)
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')
self.assert_qmp(result, 'return[0]/paused', False)
self.assert_qmp(result, 'return[0]/io-status', 'ok')
error = True
elif event['event'] == 'BLOCK_JOB_READY':
self.assertTrue(error, 'job completed unexpectedly')
self.assert_qmp(event, 'data/device', 'drive0')
ready = True
self.complete_and_wait(wait_ready=False)
self.assert_no_active_mirrors()
self.vm.shutdown()
class TestSetSpeed(ImageMirroringTestCase):
image_len = 80 * 1024 * 1024 # MB
def setUp(self):
qemu_img('create', backing_img, str(TestSetSpeed.image_len))
qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % 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(target_img)
def test_set_speed(self):
self.assert_no_active_mirrors()
result = self.vm.qmp('drive-mirror', device='drive0', sync='full',
target=target_img)
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()
# Check setting speed in drive-mirror works
result = self.vm.qmp('drive-mirror', device='drive0', sync='full',
target=target_img, 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()
def test_set_speed_invalid(self):
self.assert_no_active_mirrors()
result = self.vm.qmp('drive-mirror', device='drive0', sync='full',
target=target_img, speed=-1)
self.assert_qmp(result, 'error/class', 'GenericError')
self.assert_no_active_mirrors()
result = self.vm.qmp('drive-mirror', device='drive0', sync='full',
target=target_img)
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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