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xemu/tests/qemu-iotests/041
Hanna Reitz d5699c0d4b iotests: Fix status checks 
An iotest's 'paused' condition is fickle; it will be reported as true
whenever the job is drained, for example, or when it is in the process
of completing.

030 and 041 contain such checks, we should replace them by checking the
job status instead.  (As was done for 129 in commit f9a6256b48
for the 'busy' condition.)

Additionally, when we want to test that a job is paused on error, we
might want to give it some time to actually switch to the paused state.
Do that by waiting on the corresponding JOB_STATUS_CHANGE event.  (But
only if they are not already paused; the loops these places are in fetch
all VM events, so they may have already fetched that event from the
queue.)

Signed-off-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20220324180221.24508-1-hreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2022-03-29 16:30:55 +02:00

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#!/usr/bin/env python3
# group: rw auto backing
#
# 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 re
import json
import iotests
from iotests import qemu_img, qemu_img_map, qemu_io
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')
quorum_img1 = os.path.join(iotests.test_dir, 'quorum1.img')
quorum_img2 = os.path.join(iotests.test_dir, 'quorum2.img')
quorum_img3 = os.path.join(iotests.test_dir, 'quorum3.img')
quorum_repair_img = os.path.join(iotests.test_dir, 'quorum_repair.img')
quorum_snapshot_file = os.path.join(iotests.test_dir, 'quorum_snapshot.img')
nbd_sock_path = os.path.join(iotests.sock_dir, 'nbd.sock')
class TestSingleDrive(iotests.QMPTestCase):
image_len = 1 * 1024 * 1024 # MB
qmp_cmd = 'drive-mirror'
qmp_target = target_img
def setUp(self):
iotests.create_image(backing_img, self.image_len)
qemu_img('create', '-f', iotests.imgfmt,
'-o', 'backing_file=%s' % backing_img, '-F', 'raw', test_img)
self.vm = iotests.VM().add_drive(test_img, "node-name=top,backing.node-name=base")
if iotests.qemu_default_machine == 'pc':
self.vm.add_drive(None, 'media=cdrom', 'ide')
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_block_jobs()
result = self.vm.qmp(self.qmp_cmd, device='drive0', sync='full',
target=self.qmp_target)
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(iotests.compare_images(test_img, target_img),
'target image does not match source after mirroring')
def test_cancel(self):
self.assert_no_active_block_jobs()
result = self.vm.qmp(self.qmp_cmd, device='drive0', sync='full',
target=self.qmp_target)
self.assert_qmp(result, 'return', {})
self.cancel_and_wait(force=True)
result = self.vm.qmp('query-block')
self.assert_qmp(result, 'return[0]/inserted/file', test_img)
def test_cancel_after_ready(self):
self.assert_no_active_block_jobs()
result = self.vm.qmp(self.qmp_cmd, device='drive0', sync='full',
target=self.qmp_target)
self.assert_qmp(result, 'return', {})
self.wait_ready_and_cancel()
result = self.vm.qmp('query-block')
self.assert_qmp(result, 'return[0]/inserted/file', test_img)
self.vm.shutdown()
self.assertTrue(iotests.compare_images(test_img, target_img),
'target image does not match source after mirroring')
def test_pause(self):
self.assert_no_active_block_jobs()
result = self.vm.qmp(self.qmp_cmd, device='drive0', sync='full',
target=self.qmp_target)
self.assert_qmp(result, 'return', {})
self.pause_job('drive0')
result = self.vm.qmp('query-block-jobs')
offset = self.dictpath(result, 'return[0]/offset')
time.sleep(0.5)
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(iotests.compare_images(test_img, target_img),
'target image does not match source after mirroring')
def test_small_buffer(self):
self.assert_no_active_block_jobs()
# A small buffer is rounded up automatically
result = self.vm.qmp(self.qmp_cmd, device='drive0', sync='full',
buf_size=4096, target=self.qmp_target)
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(iotests.compare_images(test_img, target_img),
'target image does not match source after mirroring')
def test_small_buffer2(self):
self.assert_no_active_block_jobs()
qemu_img('create', '-f', iotests.imgfmt, '-o', 'cluster_size=%d,size=%d'
% (self.image_len, self.image_len), target_img)
result = self.vm.qmp(self.qmp_cmd, device='drive0', sync='full',
buf_size=65536, mode='existing', target=self.qmp_target)
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(iotests.compare_images(test_img, target_img),
'target image does not match source after mirroring')
def test_large_cluster(self):
self.assert_no_active_block_jobs()
qemu_img('create', '-f', iotests.imgfmt, '-o', 'cluster_size=%d,backing_file=%s'
% (self.image_len, backing_img),
'-F', 'raw', target_img)
result = self.vm.qmp(self.qmp_cmd, device='drive0', sync='full',
mode='existing', target=self.qmp_target)
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(iotests.compare_images(test_img, target_img),
'target image does not match source after mirroring')
# Tests that the insertion of the mirror_top filter node doesn't make a
# difference to query-block
def test_implicit_node(self):
self.assert_no_active_block_jobs()
result = self.vm.qmp(self.qmp_cmd, device='drive0', sync='full',
target=self.qmp_target)
self.assert_qmp(result, 'return', {})
result = self.vm.qmp('query-block')
self.assert_qmp(result, 'return[0]/inserted/file', test_img)
self.assert_qmp(result, 'return[0]/inserted/drv', iotests.imgfmt)
self.assert_qmp(result, 'return[0]/inserted/backing_file', backing_img)
self.assert_qmp(result, 'return[0]/inserted/backing_file_depth', 1)
self.assert_qmp(result, 'return[0]/inserted/image/filename', test_img)
self.assert_qmp(result, 'return[0]/inserted/image/backing-image/filename', backing_img)
result = self.vm.qmp('query-blockstats')
self.assert_qmp(result, 'return[0]/node-name', 'top')
self.assert_qmp(result, 'return[0]/backing/node-name', 'base')
self.cancel_and_wait(force=True)
result = self.vm.qmp('query-block')
self.assert_qmp(result, 'return[0]/inserted/file', test_img)
self.assert_qmp(result, 'return[0]/inserted/drv', iotests.imgfmt)
self.assert_qmp(result, 'return[0]/inserted/backing_file', backing_img)
self.assert_qmp(result, 'return[0]/inserted/backing_file_depth', 1)
self.assert_qmp(result, 'return[0]/inserted/image/filename', test_img)
self.assert_qmp(result, 'return[0]/inserted/image/backing-image/filename', backing_img)
result = self.vm.qmp('query-blockstats')
self.assert_qmp(result, 'return[0]/node-name', 'top')
self.assert_qmp(result, 'return[0]/backing/node-name', 'base')
def test_medium_not_found(self):
if iotests.qemu_default_machine != 'pc':
return
result = self.vm.qmp(self.qmp_cmd, device='ide1-cd0', sync='full',
target=self.qmp_target)
self.assert_qmp(result, 'error/class', 'GenericError')
def test_image_not_found(self):
result = self.vm.qmp(self.qmp_cmd, device='drive0', sync='full',
mode='existing', target=self.qmp_target)
self.assert_qmp(result, 'error/class', 'GenericError')
def test_device_not_found(self):
result = self.vm.qmp(self.qmp_cmd, device='nonexistent', sync='full',
target=self.qmp_target)
self.assert_qmp(result, 'error/class', 'GenericError')
class TestSingleBlockdev(TestSingleDrive):
qmp_cmd = 'blockdev-mirror'
qmp_target = 'node1'
def setUp(self):
TestSingleDrive.setUp(self)
qemu_img('create', '-f', iotests.imgfmt,
'-o', 'backing_file=%s' % backing_img, '-F', 'raw', target_img)
args = {'driver': iotests.imgfmt,
'node-name': self.qmp_target,
'file': { 'filename': target_img, 'driver': 'file' } }
result = self.vm.qmp("blockdev-add", **args)
self.assert_qmp(result, 'return', {})
def test_mirror_to_self(self):
result = self.vm.qmp(self.qmp_cmd, job_id='job0',
device=self.qmp_target, sync='full',
target=self.qmp_target)
self.assert_qmp(result, 'error/class', 'GenericError')
def do_test_resize(self, device, node):
def pre_finalize():
if device:
result = self.vm.qmp('block_resize', device=device, size=65536)
self.assert_qmp(result, 'error/class', 'GenericError')
result = self.vm.qmp('block_resize', node_name=node, size=65536)
self.assert_qmp(result, 'error/class', 'GenericError')
result = self.vm.qmp(self.qmp_cmd, job_id='job0', device='drive0',
sync='full', target=self.qmp_target,
auto_finalize=False, auto_dismiss=False)
self.assert_qmp(result, 'return', {})
result = self.vm.run_job('job0', auto_finalize=False,
pre_finalize=pre_finalize)
self.assertEqual(result, None)
def test_source_resize(self):
self.do_test_resize('drive0', 'top')
def test_target_resize(self):
self.do_test_resize(None, self.qmp_target)
def do_test_target_size(self, size):
result = self.vm.qmp('block_resize', node_name=self.qmp_target,
size=size)
self.assert_qmp(result, 'return', {})
result = self.vm.qmp(self.qmp_cmd, job_id='job0',
device='drive0', sync='full', auto_dismiss=False,
target=self.qmp_target)
self.assert_qmp(result, 'return', {})
result = self.vm.run_job('job0')
self.assertEqual(result, 'Source and target image have different sizes')
# qed does not support shrinking
@iotests.skip_for_formats(('qed'))
def test_small_target(self):
self.do_test_target_size(self.image_len // 2)
def test_large_target(self):
self.do_test_target_size(self.image_len * 2)
test_large_cluster = None
test_image_not_found = None
test_small_buffer2 = None
class TestSingleDriveZeroLength(TestSingleDrive):
image_len = 0
test_small_buffer2 = None
test_large_cluster = None
class TestSingleBlockdevZeroLength(TestSingleBlockdev):
image_len = 0
test_small_target = None
test_large_target = None
class TestSingleDriveUnalignedLength(TestSingleDrive):
image_len = 1025 * 1024
test_small_buffer2 = None
test_large_cluster = None
class TestSingleBlockdevUnalignedLength(TestSingleBlockdev):
image_len = 1025 * 1024
class TestMirrorNoBacking(iotests.QMPTestCase):
image_len = 2 * 1024 * 1024 # MB
def setUp(self):
iotests.create_image(backing_img, TestMirrorNoBacking.image_len)
qemu_img('create', '-f', iotests.imgfmt,
'-o', 'backing_file=%s' % backing_img, '-F', 'raw', 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_backing_img)
except:
pass
os.remove(target_img)
def test_complete(self):
self.assert_no_active_block_jobs()
qemu_img('create', '-f', iotests.imgfmt,
'-o', 'backing_file=%s' % backing_img, '-F', 'raw', 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(iotests.compare_images(test_img, target_img),
'target image does not match source after mirroring')
def test_cancel(self):
self.assert_no_active_block_jobs()
qemu_img('create', '-f', iotests.imgfmt,
'-o', 'backing_file=%s' % backing_img, '-F', 'raw', target_img)
result = self.vm.qmp('drive-mirror', device='drive0', sync='full',
mode='existing', target=target_img)
self.assert_qmp(result, 'return', {})
self.wait_ready_and_cancel()
result = self.vm.qmp('query-block')
self.assert_qmp(result, 'return[0]/inserted/file', test_img)
self.vm.shutdown()
self.assertTrue(iotests.compare_images(test_img, target_img),
'target image does not match source after mirroring')
def test_large_cluster(self):
self.assert_no_active_block_jobs()
# qemu-img create fails if the image is not there
qemu_img('create', '-f', iotests.imgfmt, '-o', 'size=%d'
%(TestMirrorNoBacking.image_len), target_backing_img)
qemu_img('create', '-f', iotests.imgfmt, '-o', 'cluster_size=%d,backing_file=%s'
% (TestMirrorNoBacking.image_len, target_backing_img),
'-F', iotests.imgfmt, 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(iotests.compare_images(test_img, target_img),
'target image does not match source after mirroring')
class TestMirrorResized(iotests.QMPTestCase):
backing_len = 1 * 1024 * 1024 # MB
image_len = 2 * 1024 * 1024 # MB
def setUp(self):
iotests.create_image(backing_img, TestMirrorResized.backing_len)
qemu_img('create', '-f', iotests.imgfmt,
'-o', 'backing_file=%s' % backing_img, '-F', 'raw', test_img)
qemu_img('resize', test_img, '2M')
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_top(self):
self.assert_no_active_block_jobs()
result = self.vm.qmp('drive-mirror', device='drive0', sync='top',
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(iotests.compare_images(test_img, target_img),
'target image does not match source after mirroring')
def test_complete_full(self):
self.assert_no_active_block_jobs()
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(iotests.compare_images(test_img, target_img),
'target image does not match source after mirroring')
class TestReadErrors(iotests.QMPTestCase):
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"
iotests.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)
# Write something for tests that use sync='top'
qemu_io('-c', 'write %d 512' % (self.MIRROR_GRANULARITY + 65536),
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(target_img)
os.remove(backing_img)
os.remove(self.blkdebug_file)
def test_report_read(self):
self.assert_no_active_block_jobs()
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')
completed = True
elif event['event'] == 'JOB_STATUS_CHANGE':
self.assert_qmp(event, 'data/id', 'drive0')
self.assert_no_active_block_jobs()
def test_ignore_read(self):
self.assert_no_active_block_jobs()
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)
while event['event'] == 'JOB_STATUS_CHANGE':
self.assert_qmp(event, 'data/id', 'drive0')
event = self.vm.get_qmp_event(wait=True)
self.assertEqual(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.assertIn(result['return'][0]['status'], ['running', 'ready'])
self.complete_and_wait()
def test_large_cluster(self):
self.assert_no_active_block_jobs()
# Test COW into the target image. The first half of the
# cluster at MIRROR_GRANULARITY has to be copied from
# backing_img, even though sync='top'.
qemu_img('create', '-f', iotests.imgfmt,
'-ocluster_size=131072,backing_file=%s' %(backing_img),
'-F', 'raw', target_img)
result = self.vm.qmp('drive-mirror', device='drive0', sync='top',
on_source_error='ignore',
mode='existing', target=target_img)
self.assert_qmp(result, 'return', {})
event = self.vm.get_qmp_event(wait=True)
while event['event'] == 'JOB_STATUS_CHANGE':
self.assert_qmp(event, 'data/id', 'drive0')
event = self.vm.get_qmp_event(wait=True)
self.assertEqual(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.assertIn(result['return'][0]['status'], ['running', 'ready'])
self.complete_and_wait()
self.vm.shutdown()
# Detach blkdebug to compare images successfully
qemu_img('rebase', '-f', iotests.imgfmt, '-u', '-b', backing_img,
'-F', 'raw', test_img)
self.assertTrue(iotests.compare_images(test_img, target_img),
'target image does not match source after mirroring')
def test_stop_read(self):
self.assert_no_active_block_jobs()
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')
if self.vm.qmp('query-block-jobs')['return'][0]['status'] != 'paused':
self.vm.events_wait([(
'JOB_STATUS_CHANGE',
{'data': {'id': 'drive0', 'status': 'paused'}}
)])
result = self.vm.qmp('query-block-jobs')
self.assert_qmp(result, 'return[0]/status', 'paused')
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]/status', 'ready')
self.assert_qmp(result, 'return[0]/io-status', 'ok')
self.complete_and_wait(wait_ready=False)
self.assert_no_active_block_jobs()
class TestWriteErrors(iotests.QMPTestCase):
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"
iotests.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), '-F', 'raw', 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(target_img)
os.remove(backing_img)
os.remove(self.blkdebug_file)
def test_report_write(self):
self.assert_no_active_block_jobs()
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')
completed = True
self.assert_no_active_block_jobs()
def test_ignore_write(self):
self.assert_no_active_block_jobs()
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.event_wait(name='BLOCK_JOB_ERROR')
self.assertEqual(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.assertIn(result['return'][0]['status'], ['running', 'ready'])
self.complete_and_wait()
def test_stop_write(self):
self.assert_no_active_block_jobs()
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')
if self.vm.qmp('query-block-jobs')['return'][0]['status'] != 'paused':
self.vm.events_wait([(
'JOB_STATUS_CHANGE',
{'data': {'id': 'drive0', 'status': 'paused'}}
)])
result = self.vm.qmp('query-block-jobs')
self.assert_qmp(result, 'return[0]/status', 'paused')
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.assertIn(result['return'][0]['status'], ['running', 'ready'])
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_block_jobs()
class TestSetSpeed(iotests.QMPTestCase):
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, '-F', 'raw', 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_block_jobs()
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.wait_ready_and_cancel()
# 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.wait_ready_and_cancel()
def test_set_speed_invalid(self):
self.assert_no_active_block_jobs()
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_block_jobs()
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.wait_ready_and_cancel()
class TestUnbackedSource(iotests.QMPTestCase):
image_len = 2 * 1024 * 1024 # MB
def setUp(self):
qemu_img('create', '-f', iotests.imgfmt, test_img,
str(TestUnbackedSource.image_len))
self.vm = iotests.VM()
self.vm.launch()
result = self.vm.qmp('blockdev-add', node_name='drive0',
driver=iotests.imgfmt,
file={
'driver': 'file',
'filename': test_img,
})
self.assert_qmp(result, 'return', {})
def tearDown(self):
self.vm.shutdown()
os.remove(test_img)
os.remove(target_img)
def test_absolute_paths_full(self):
self.assert_no_active_block_jobs()
result = self.vm.qmp('drive-mirror', job_id='drive0', device='drive0',
sync='full', target=target_img,
mode='absolute-paths')
self.assert_qmp(result, 'return', {})
self.complete_and_wait()
self.assert_no_active_block_jobs()
def test_absolute_paths_top(self):
self.assert_no_active_block_jobs()
result = self.vm.qmp('drive-mirror', job_id='drive0', device='drive0',
sync='top', target=target_img,
mode='absolute-paths')
self.assert_qmp(result, 'return', {})
self.complete_and_wait()
self.assert_no_active_block_jobs()
def test_absolute_paths_none(self):
self.assert_no_active_block_jobs()
result = self.vm.qmp('drive-mirror', job_id='drive0', device='drive0',
sync='none', target=target_img,
mode='absolute-paths')
self.assert_qmp(result, 'return', {})
self.complete_and_wait()
self.assert_no_active_block_jobs()
def test_existing_full(self):
qemu_img('create', '-f', iotests.imgfmt, target_img,
str(self.image_len))
qemu_io('-c', 'write -P 42 0 64k', target_img)
self.assert_no_active_block_jobs()
result = self.vm.qmp('drive-mirror', job_id='drive0', device='drive0',
sync='full', target=target_img, mode='existing')
self.assert_qmp(result, 'return', {})
self.complete_and_wait()
self.assert_no_active_block_jobs()
result = self.vm.qmp('blockdev-del', node_name='drive0')
self.assert_qmp(result, 'return', {})
self.assertTrue(iotests.compare_images(test_img, target_img),
'target image does not match source after mirroring')
def test_blockdev_full(self):
qemu_img('create', '-f', iotests.imgfmt, target_img,
str(self.image_len))
qemu_io('-c', 'write -P 42 0 64k', target_img)
result = self.vm.qmp('blockdev-add', node_name='target',
driver=iotests.imgfmt,
file={
'driver': 'file',
'filename': target_img,
})
self.assert_qmp(result, 'return', {})
self.assert_no_active_block_jobs()
result = self.vm.qmp('blockdev-mirror', job_id='drive0', device='drive0',
sync='full', target='target')
self.assert_qmp(result, 'return', {})
self.complete_and_wait()
self.assert_no_active_block_jobs()
result = self.vm.qmp('blockdev-del', node_name='drive0')
self.assert_qmp(result, 'return', {})
result = self.vm.qmp('blockdev-del', node_name='target')
self.assert_qmp(result, 'return', {})
self.assertTrue(iotests.compare_images(test_img, target_img),
'target image does not match source after mirroring')
class TestGranularity(iotests.QMPTestCase):
image_len = 10 * 1024 * 1024 # MB
def setUp(self):
qemu_img('create', '-f', iotests.imgfmt, test_img,
str(TestGranularity.image_len))
qemu_io('-c', 'write 0 %d' % (self.image_len),
test_img)
self.vm = iotests.VM().add_drive(test_img)
self.vm.launch()
def tearDown(self):
self.vm.shutdown()
self.assertTrue(iotests.compare_images(test_img, target_img),
'target image does not match source after mirroring')
os.remove(test_img)
os.remove(target_img)
def test_granularity(self):
self.assert_no_active_block_jobs()
result = self.vm.qmp('drive-mirror', device='drive0',
sync='full', target=target_img,
mode='absolute-paths', granularity=8192)
self.assert_qmp(result, 'return', {})
event = self.vm.get_qmp_event(wait=60.0)
while event['event'] == 'JOB_STATUS_CHANGE':
self.assert_qmp(event, 'data/id', 'drive0')
event = self.vm.get_qmp_event(wait=60.0)
# Failures will manifest as COMPLETED/ERROR.
self.assert_qmp(event, 'event', 'BLOCK_JOB_READY')
self.complete_and_wait(drive='drive0', wait_ready=False)
self.assert_no_active_block_jobs()
class TestRepairQuorum(iotests.QMPTestCase):
""" This class test quorum file repair using drive-mirror.
It's mostly a fork of TestSingleDrive """
image_len = 1 * 1024 * 1024 # MB
IMAGES = [ quorum_img1, quorum_img2, quorum_img3 ]
@iotests.skip_if_unsupported(['quorum'])
def setUp(self):
self.vm = iotests.VM()
if iotests.qemu_default_machine == 'pc':
self.vm.add_drive(None, 'media=cdrom', 'ide')
# Add each individual quorum images
for i in self.IMAGES:
qemu_img('create', '-f', iotests.imgfmt, i,
str(self.image_len))
# Assign a node name to each quorum image in order to manipulate
# them
opts = "node-name=img%i" % self.IMAGES.index(i)
opts += ',driver=%s' % iotests.imgfmt
opts += ',file.driver=file'
opts += ',file.filename=%s' % i
self.vm = self.vm.add_blockdev(opts)
self.vm.launch()
#assemble the quorum block device from the individual files
args = { "driver": "quorum", "node-name": "quorum0",
"vote-threshold": 2, "children": [ "img0", "img1", "img2" ] }
result = self.vm.qmp("blockdev-add", **args)
self.assert_qmp(result, 'return', {})
def tearDown(self):
self.vm.shutdown()
for i in self.IMAGES + [ quorum_repair_img, quorum_snapshot_file,
nbd_sock_path ]:
# Do a try/except because the test may have deleted some images
try:
os.remove(i)
except OSError:
pass
def test_complete(self):
result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0',
sync='full', node_name="repair0", replaces="img1",
target=quorum_repair_img, format=iotests.imgfmt)
self.assert_qmp(result, 'return', {})
self.complete_and_wait(drive="job0")
self.assert_has_block_node("repair0", quorum_repair_img)
self.vm.assert_block_path('quorum0', '/children.1', 'repair0')
self.vm.shutdown()
self.assertTrue(iotests.compare_images(quorum_img2, quorum_repair_img),
'target image does not match source after mirroring')
def test_cancel(self):
result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0',
sync='full', node_name="repair0", replaces="img1",
target=quorum_repair_img, format=iotests.imgfmt)
self.assert_qmp(result, 'return', {})
self.cancel_and_wait(drive="job0", force=True)
# here we check that the last registered quorum file has not been
# swapped out and unref
self.assert_has_block_node(None, quorum_img3)
def test_cancel_after_ready(self):
result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0',
sync='full', node_name="repair0", replaces="img1",
target=quorum_repair_img, format=iotests.imgfmt)
self.assert_qmp(result, 'return', {})
self.wait_ready_and_cancel(drive="job0")
# here we check that the last registered quorum file has not been
# swapped out and unref
self.assert_has_block_node(None, quorum_img3)
self.vm.shutdown()
self.assertTrue(iotests.compare_images(quorum_img2, quorum_repair_img),
'target image does not match source after mirroring')
def test_pause(self):
result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0',
sync='full', node_name="repair0", replaces="img1",
target=quorum_repair_img, format=iotests.imgfmt)
self.assert_qmp(result, 'return', {})
self.pause_job('job0')
result = self.vm.qmp('query-block-jobs')
offset = self.dictpath(result, 'return[0]/offset')
time.sleep(0.5)
result = self.vm.qmp('query-block-jobs')
self.assert_qmp(result, 'return[0]/offset', offset)
result = self.vm.qmp('block-job-resume', device='job0')
self.assert_qmp(result, 'return', {})
self.complete_and_wait(drive="job0")
self.vm.shutdown()
self.assertTrue(iotests.compare_images(quorum_img2, quorum_repair_img),
'target image does not match source after mirroring')
def test_medium_not_found(self):
if iotests.qemu_default_machine != 'pc':
return
result = self.vm.qmp('drive-mirror', job_id='job0', device='drive0', # CD-ROM
sync='full',
node_name='repair0',
replaces='img1',
target=quorum_repair_img, format=iotests.imgfmt)
self.assert_qmp(result, 'error/class', 'GenericError')
def test_image_not_found(self):
result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0',
sync='full', node_name='repair0', replaces='img1',
mode='existing', target=quorum_repair_img,
format=iotests.imgfmt)
self.assert_qmp(result, 'error/class', 'GenericError')
def test_device_not_found(self):
result = self.vm.qmp('drive-mirror', job_id='job0',
device='nonexistent', sync='full',
node_name='repair0',
replaces='img1',
target=quorum_repair_img, format=iotests.imgfmt)
self.assert_qmp(result, 'error/class', 'GenericError')
def test_wrong_sync_mode(self):
result = self.vm.qmp('drive-mirror', device='quorum0', job_id='job0',
node_name='repair0',
replaces='img1',
target=quorum_repair_img, format=iotests.imgfmt)
self.assert_qmp(result, 'error/class', 'GenericError')
def test_no_node_name(self):
result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0',
sync='full', replaces='img1',
target=quorum_repair_img, format=iotests.imgfmt)
self.assert_qmp(result, 'error/class', 'GenericError')
def test_nonexistent_replaces(self):
result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0',
sync='full', node_name='repair0', replaces='img77',
target=quorum_repair_img, format=iotests.imgfmt)
self.assert_qmp(result, 'error/class', 'GenericError')
def test_after_a_quorum_snapshot(self):
result = self.vm.qmp('blockdev-snapshot-sync', node_name='img1',
snapshot_file=quorum_snapshot_file,
snapshot_node_name="snap1");
result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0',
sync='full', node_name='repair0', replaces="img1",
target=quorum_repair_img, format=iotests.imgfmt)
self.assert_qmp(result, 'error/class', 'GenericError')
result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0',
sync='full', node_name='repair0', replaces="snap1",
target=quorum_repair_img, format=iotests.imgfmt)
self.assert_qmp(result, 'return', {})
self.complete_and_wait('job0')
self.assert_has_block_node("repair0", quorum_repair_img)
self.vm.assert_block_path('quorum0', '/children.1', 'repair0')
def test_with_other_parent(self):
"""
Check that we cannot replace a Quorum child when it has other
parents.
"""
result = self.vm.qmp('nbd-server-start',
addr={
'type': 'unix',
'data': {'path': nbd_sock_path}
})
self.assert_qmp(result, 'return', {})
result = self.vm.qmp('nbd-server-add', device='img1')
self.assert_qmp(result, 'return', {})
result = self.vm.qmp('drive-mirror', job_id='mirror', device='quorum0',
sync='full', node_name='repair0', replaces='img1',
target=quorum_repair_img, format=iotests.imgfmt)
self.assert_qmp(result, 'error/desc',
"Cannot replace 'img1' by a node mirrored from "
"'quorum0', because it cannot be guaranteed that doing "
"so would not lead to an abrupt change of visible data")
def test_with_other_parents_after_mirror_start(self):
"""
The same as test_with_other_parent(), but add the NBD server
only when the mirror job is already running.
"""
result = self.vm.qmp('nbd-server-start',
addr={
'type': 'unix',
'data': {'path': nbd_sock_path}
})
self.assert_qmp(result, 'return', {})
result = self.vm.qmp('drive-mirror', job_id='mirror', device='quorum0',
sync='full', node_name='repair0', replaces='img1',
target=quorum_repair_img, format=iotests.imgfmt)
self.assert_qmp(result, 'return', {})
result = self.vm.qmp('nbd-server-add', device='img1')
self.assert_qmp(result, 'return', {})
# The full error message goes to stderr, we will check it later
self.complete_and_wait('mirror',
completion_error='Operation not permitted')
# Should not have been replaced
self.vm.assert_block_path('quorum0', '/children.1', 'img1')
# Check the full error message now
self.vm.shutdown()
log = self.vm.get_log()
log = re.sub(r'^\[I \d+\.\d+\] OPENED\n', '', log)
log = re.sub(r'^Formatting.*\n', '', log)
log = re.sub(r'\n\[I \+\d+\.\d+\] CLOSED\n?$', '', log)
log = re.sub(r'^%s: ' % os.path.basename(iotests.qemu_prog), '', log)
self.assertEqual(log,
"Can no longer replace 'img1' by 'repair0', because " +
"it can no longer be guaranteed that doing so would " +
"not lead to an abrupt change of visible data")
# Test mirroring with a source that does not have any parents (not even a
# BlockBackend)
class TestOrphanedSource(iotests.QMPTestCase):
def setUp(self):
blk0 = { 'node-name': 'src',
'driver': 'null-co' }
blk1 = { 'node-name': 'dest',
'driver': 'null-co' }
blk2 = { 'node-name': 'dest-ro',
'driver': 'null-co',
'read-only': 'on' }
self.vm = iotests.VM()
self.vm.add_blockdev(self.vm.qmp_to_opts(blk0))
self.vm.add_blockdev(self.vm.qmp_to_opts(blk1))
self.vm.add_blockdev(self.vm.qmp_to_opts(blk2))
self.vm.launch()
def tearDown(self):
self.vm.shutdown()
def test_no_job_id(self):
self.assert_no_active_block_jobs()
result = self.vm.qmp('blockdev-mirror', device='src', sync='full',
target='dest')
self.assert_qmp(result, 'error/class', 'GenericError')
def test_success(self):
self.assert_no_active_block_jobs()
result = self.vm.qmp('blockdev-mirror', job_id='job', device='src',
sync='full', target='dest')
self.assert_qmp(result, 'return', {})
self.complete_and_wait('job')
def test_failing_permissions(self):
self.assert_no_active_block_jobs()
result = self.vm.qmp('blockdev-mirror', device='src', sync='full',
target='dest-ro')
self.assert_qmp(result, 'error/class', 'GenericError')
def test_failing_permission_in_complete(self):
self.assert_no_active_block_jobs()
# Unshare consistent-read on the target
# (The mirror job does not care)
result = self.vm.qmp('blockdev-add',
driver='blkdebug',
node_name='dest-perm',
image='dest',
unshare_child_perms=['consistent-read'])
self.assert_qmp(result, 'return', {})
result = self.vm.qmp('blockdev-mirror', job_id='job', device='src',
sync='full', target='dest',
filter_node_name='mirror-filter')
self.assert_qmp(result, 'return', {})
# Require consistent-read on the source
# (We can only add this node once the job has started, or it
# will complain that it does not want to run on non-root nodes)
result = self.vm.qmp('blockdev-add',
driver='blkdebug',
node_name='src-perm',
image='src',
take_child_perms=['consistent-read'])
self.assert_qmp(result, 'return', {})
# While completing, mirror will attempt to replace src by
# dest, which must fail because src-perm requires
# consistent-read but dest-perm does not share it; thus
# aborting the job when it is supposed to complete
self.complete_and_wait('job',
completion_error='Operation not permitted')
# Assert that all of our nodes are still there (except for the
# mirror filter, which should be gone despite the failure)
nodes = self.vm.qmp('query-named-block-nodes')['return']
nodes = [node['node-name'] for node in nodes]
for expect in ('src', 'src-perm', 'dest', 'dest-perm'):
self.assertTrue(expect in nodes, '%s disappeared' % expect)
self.assertFalse('mirror-filter' in nodes,
'Mirror filter node did not disappear')
# Test cases for @replaces that do not necessarily involve Quorum
class TestReplaces(iotests.QMPTestCase):
# Each of these test cases needs their own block graph, so do not
# create any nodes here
def setUp(self):
self.vm = iotests.VM()
self.vm.launch()
def tearDown(self):
self.vm.shutdown()
for img in (test_img, target_img):
try:
os.remove(img)
except OSError:
pass
@iotests.skip_if_unsupported(['copy-on-read'])
def test_replace_filter(self):
"""
Check that we can replace filter nodes.
"""
result = self.vm.qmp('blockdev-add', **{
'driver': 'copy-on-read',
'node-name': 'filter0',
'file': {
'driver': 'copy-on-read',
'node-name': 'filter1',
'file': {
'driver': 'null-co'
}
}
})
self.assert_qmp(result, 'return', {})
result = self.vm.qmp('blockdev-add',
node_name='target', driver='null-co')
self.assert_qmp(result, 'return', {})
result = self.vm.qmp('blockdev-mirror', job_id='mirror', device='filter0',
target='target', sync='full', replaces='filter1')
self.assert_qmp(result, 'return', {})
self.complete_and_wait('mirror')
self.vm.assert_block_path('filter0', '/file', 'target')
# Tests for mirror with filters (and how the mirror filter behaves, as
# an example for an implicit filter)
class TestFilters(iotests.QMPTestCase):
def setUp(self):
qemu_img('create', '-f', iotests.imgfmt, backing_img, '1M')
qemu_img('create', '-f', iotests.imgfmt, '-b', backing_img,
'-F', iotests.imgfmt, test_img)
qemu_img('create', '-f', iotests.imgfmt, '-b', backing_img,
'-F', iotests.imgfmt, target_img)
qemu_io('-c', 'write -P 1 0 512k', backing_img)
qemu_io('-c', 'write -P 2 512k 512k', test_img)
self.vm = iotests.VM().add_device('virtio-scsi,id=vio-scsi')
self.vm.launch()
result = self.vm.qmp('blockdev-add', **{
'node-name': 'target',
'driver': iotests.imgfmt,
'file': {
'driver': 'file',
'filename': target_img
},
'backing': None
})
self.assert_qmp(result, 'return', {})
self.filterless_chain = {
'node-name': 'source',
'driver': iotests.imgfmt,
'file': {
'driver': 'file',
'filename': test_img
},
'backing': {
'node-name': 'backing',
'driver': iotests.imgfmt,
'file': {
'driver': 'file',
'filename': backing_img
}
}
}
def tearDown(self):
self.vm.shutdown()
os.remove(test_img)
os.remove(target_img)
os.remove(backing_img)
def test_cor(self):
result = self.vm.qmp('blockdev-add', **{
'node-name': 'filter',
'driver': 'copy-on-read',
'file': self.filterless_chain
})
self.assert_qmp(result, 'return', {})
result = self.vm.qmp('blockdev-mirror',
job_id='mirror',
device='filter',
target='target',
sync='top')
self.assert_qmp(result, 'return', {})
self.complete_and_wait('mirror')
self.vm.qmp('blockdev-del', node_name='target')
target_map = qemu_img_map(target_img)
assert target_map[0]['start'] == 0
assert target_map[0]['length'] == 512 * 1024
assert target_map[0]['depth'] == 1
assert target_map[1]['start'] == 512 * 1024
assert target_map[1]['length'] == 512 * 1024
assert target_map[1]['depth'] == 0
def test_implicit_mirror_filter(self):
result = self.vm.qmp('blockdev-add', **self.filterless_chain)
self.assert_qmp(result, 'return', {})
# We need this so we can query from above the mirror node
result = self.vm.qmp('device_add',
driver='scsi-hd',
id='virtio',
bus='vio-scsi.0',
drive='source')
self.assert_qmp(result, 'return', {})
result = self.vm.qmp('blockdev-mirror',
job_id='mirror',
device='source',
target='target',
sync='top')
self.assert_qmp(result, 'return', {})
# The mirror filter is now an implicit node, so it should be
# invisible when querying the backing chain
blockdevs = self.vm.qmp('query-block')['return']
device_info = next(dev for dev in blockdevs if dev['qdev'] == 'virtio')
assert device_info['inserted']['node-name'] == 'source'
image_info = device_info['inserted']['image']
assert image_info['filename'] == test_img
assert image_info['backing-image']['filename'] == backing_img
self.complete_and_wait('mirror')
def test_explicit_mirror_filter(self):
# Same test as above, but this time we give the mirror filter
# a node-name so it will not be invisible
result = self.vm.qmp('blockdev-add', **self.filterless_chain)
self.assert_qmp(result, 'return', {})
# We need this so we can query from above the mirror node
result = self.vm.qmp('device_add',
driver='scsi-hd',
id='virtio',
bus='vio-scsi.0',
drive='source')
self.assert_qmp(result, 'return', {})
result = self.vm.qmp('blockdev-mirror',
job_id='mirror',
device='source',
target='target',
sync='top',
filter_node_name='mirror-filter')
self.assert_qmp(result, 'return', {})
# With a node-name given to it, the mirror filter should now
# be visible
blockdevs = self.vm.qmp('query-block')['return']
device_info = next(dev for dev in blockdevs if dev['qdev'] == 'virtio')
assert device_info['inserted']['node-name'] == 'mirror-filter'
self.complete_and_wait('mirror')
if __name__ == '__main__':
iotests.main(supported_fmts=['qcow2', 'qed'],
supported_protocols=['file'],
supported_platforms=['linux', 'freebsd', 'netbsd', 'openbsd'])
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