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f003d07337a6d4d02c43429b26a4270459afb51a
qemu/tests/qemu-iotests/030
Max Reitz dca9b6a2b1 iotests: Make 030 less flaky 
This patch fixes two race conditions in 030:

1. The first is in TestENOSPC.test_enospc().  After resuming the job,
   querying it to confirm it is no longer paused may fail because in the
   meantime it might have completed already.  The same was fixed in
   TestEIO.test_ignore() already (in commit
   2c3b44da07).

2. The second is in TestSetSpeed.test_set_speed_invalid(): Here, a
   stream job is started on a drive without any break points, with a
   block-job-set-speed invoked subsequently.  However, without any break
   points, the job might have completed in the meantime (on tmpfs at
   least); or it might complete before cancel_and_wait() which expects
   the job to still exist.  This can be fixed like everywhere else by
   pausing the drive (installing break points) before starting the job
   and letting cancel_and_wait() resume it.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20171109203025.27493-2-mreitz@redhat.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
2017-11-14 18:06:25 +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)
qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0x1 524288 512', mid_img)
self.vm = iotests.VM().add_drive("blkdebug::" + test_img, "backing.node-name=mid")
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_intermediate(self):
self.assert_no_active_block_jobs()
self.assertNotEqual(qemu_io('-f', 'raw', '-rU', '-c', 'map', backing_img),
qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', mid_img),
'image file map matches backing file before streaming')
result = self.vm.qmp('block-stream', device='mid', job_id='stream-mid')
self.assert_qmp(result, 'return', {})
self.wait_until_completed(drive='stream-mid')
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', mid_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', {})
self.vm.resume_drive('drive0')
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.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_no_op(self):
self.assert_no_active_block_jobs()
# The image map is empty before the operation
empty_map = qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', test_img)
# This is a no-op: no data should ever be copied from the base image
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', test_img),
empty_map, 'image file map changed after a no-op')
def test_stream_partial(self):
self.assert_no_active_block_jobs()
result = self.vm.qmp('block-stream', device='drive0', base=backing_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', 'GenericError')
def test_job_id_missing(self):
result = self.vm.qmp('block-stream', device='mid')
self.assert_qmp(result, 'error/class', 'GenericError')
class TestParallelOps(iotests.QMPTestCase):
num_ops = 4 # Number of parallel block-stream operations
num_imgs = num_ops * 2 + 1
image_len = num_ops * 1024 * 1024
imgs = []
def setUp(self):
opts = []
self.imgs = []
# Initialize file names and command-line options
for i in range(self.num_imgs):
img_depth = self.num_imgs - i - 1
opts.append("backing." * img_depth + "node-name=node%d" % i)
self.imgs.append(os.path.join(iotests.test_dir, 'img-%d.img' % i))
# Create all images
iotests.create_image(self.imgs[0], self.image_len)
for i in range(1, self.num_imgs):
qemu_img('create', '-f', iotests.imgfmt,
'-o', 'backing_file=%s' % self.imgs[i-1], self.imgs[i])
# Put data into the images we are copying data from
for i in range(self.num_imgs / 2):
img_index = i * 2 + 1
# Alternate between 512k and 1M.
# This way jobs will not finish in the same order they were created
num_kb = 512 + 512 * (i % 2)
qemu_io('-f', iotests.imgfmt,
'-c', 'write -P %d %d %d' % (i, i*1024*1024, num_kb * 1024),
self.imgs[img_index])
# Attach the drive to the VM
self.vm = iotests.VM()
self.vm.add_drive(self.imgs[-1], ','.join(opts))
self.vm.launch()
def tearDown(self):
self.vm.shutdown()
for img in self.imgs:
os.remove(img)
# Test that it's possible to run several block-stream operations
# in parallel in the same snapshot chain
def test_stream_parallel(self):
self.assert_no_active_block_jobs()
# Check that the maps don't match before the streaming operations
for i in range(2, self.num_imgs, 2):
self.assertNotEqual(qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.imgs[i]),
qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.imgs[i-1]),
'image file map matches backing file before streaming')
# Create all streaming jobs
pending_jobs = []
for i in range(2, self.num_imgs, 2):
node_name = 'node%d' % i
job_id = 'stream-%s' % node_name
pending_jobs.append(job_id)
result = self.vm.qmp('block-stream', device=node_name, job_id=job_id, base=self.imgs[i-2], speed=512*1024)
self.assert_qmp(result, 'return', {})
# Wait for all jobs to be finished.
while len(pending_jobs) > 0:
for event in self.vm.get_qmp_events(wait=True):
if event['event'] == 'BLOCK_JOB_COMPLETED':
job_id = self.dictpath(event, 'data/device')
self.assertTrue(job_id in pending_jobs)
self.assert_qmp_absent(event, 'data/error')
pending_jobs.remove(job_id)
self.assert_no_active_block_jobs()
self.vm.shutdown()
# Check that all maps match now
for i in range(2, self.num_imgs, 2):
self.assertEqual(qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[i]),
qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[i-1]),
'image file map does not match backing file after streaming')
# Test that it's not possible to perform two block-stream
# operations if there are nodes involved in both.
def test_overlapping_1(self):
self.assert_no_active_block_jobs()
# Set a speed limit to make sure that this job blocks the rest
result = self.vm.qmp('block-stream', device='node4', job_id='stream-node4', base=self.imgs[1], speed=1024*1024)
self.assert_qmp(result, 'return', {})
result = self.vm.qmp('block-stream', device='node5', job_id='stream-node5', base=self.imgs[2])
self.assert_qmp(result, 'error/class', 'GenericError')
result = self.vm.qmp('block-stream', device='node3', job_id='stream-node3', base=self.imgs[2])
self.assert_qmp(result, 'error/class', 'GenericError')
result = self.vm.qmp('block-stream', device='node4', job_id='stream-node4-v2')
self.assert_qmp(result, 'error/class', 'GenericError')
# block-commit should also fail if it touches nodes used by the stream job
result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[4], job_id='commit-node4')
self.assert_qmp(result, 'error/class', 'GenericError')
result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[1], top=self.imgs[3], job_id='commit-node1')
self.assert_qmp(result, 'error/class', 'GenericError')
# This fails because it needs to modify the backing string in node2, which is blocked
result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[0], top=self.imgs[1], job_id='commit-node0')
self.assert_qmp(result, 'error/class', 'GenericError')
self.wait_until_completed(drive='stream-node4')
self.assert_no_active_block_jobs()
# Similar to test_overlapping_1, but with block-commit
# blocking the other jobs
def test_overlapping_2(self):
self.assertLessEqual(9, self.num_imgs)
self.assert_no_active_block_jobs()
# Set a speed limit to make sure that this job blocks the rest
result = self.vm.qmp('block-commit', device='drive0', top=self.imgs[5], base=self.imgs[3], job_id='commit-node3', speed=1024*1024)
self.assert_qmp(result, 'return', {})
result = self.vm.qmp('block-stream', device='node3', job_id='stream-node3')
self.assert_qmp(result, 'error/class', 'GenericError')
result = self.vm.qmp('block-stream', device='node6', base=self.imgs[2], job_id='stream-node6')
self.assert_qmp(result, 'error/class', 'GenericError')
result = self.vm.qmp('block-stream', device='node4', base=self.imgs[2], job_id='stream-node4')
self.assert_qmp(result, 'error/class', 'GenericError')
result = self.vm.qmp('block-stream', device='node6', base=self.imgs[4], job_id='stream-node6-v2')
self.assert_qmp(result, 'error/class', 'GenericError')
# This fails because block-commit currently blocks the active layer even if it's not used
result = self.vm.qmp('block-stream', device='drive0', base=self.imgs[5], job_id='stream-drive0')
self.assert_qmp(result, 'error/class', 'GenericError')
self.wait_until_completed(drive='commit-node3')
# Similar to test_overlapping_2, but here block-commit doesn't use the 'top' parameter.
# Internally this uses a mirror block job, hence the separate test case.
def test_overlapping_3(self):
self.assertLessEqual(8, self.num_imgs)
self.assert_no_active_block_jobs()
# Set a speed limit to make sure that this job blocks the rest
result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[3], job_id='commit-drive0', speed=1024*1024)
self.assert_qmp(result, 'return', {})
result = self.vm.qmp('block-stream', device='node5', base=self.imgs[3], job_id='stream-node6')
self.assert_qmp(result, 'error/class', 'GenericError')
event = self.vm.get_qmp_event(wait=True)
self.assertEqual(event['event'], 'BLOCK_JOB_READY')
self.assert_qmp(event, 'data/device', 'commit-drive0')
self.assert_qmp(event, 'data/type', 'commit')
self.assert_qmp_absent(event, 'data/error')
result = self.vm.qmp('block-job-complete', device='commit-drive0')
self.assert_qmp(result, 'return', {})
self.wait_until_completed(drive='commit-drive0')
# Test a block-stream and a block-commit job in parallel
def test_stream_commit(self):
self.assertLessEqual(8, self.num_imgs)
self.assert_no_active_block_jobs()
# Stream from node0 into node2
result = self.vm.qmp('block-stream', device='node2', job_id='node2')
self.assert_qmp(result, 'return', {})
# Commit from the active layer into node3
result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[3])
self.assert_qmp(result, 'return', {})
# Wait for all jobs to be finished.
pending_jobs = ['node2', 'drive0']
while len(pending_jobs) > 0:
for event in self.vm.get_qmp_events(wait=True):
if event['event'] == 'BLOCK_JOB_COMPLETED':
node_name = self.dictpath(event, 'data/device')
self.assertTrue(node_name in pending_jobs)
self.assert_qmp_absent(event, 'data/error')
pending_jobs.remove(node_name)
if event['event'] == 'BLOCK_JOB_READY':
self.assert_qmp(event, 'data/device', 'drive0')
self.assert_qmp(event, 'data/type', 'commit')
self.assert_qmp_absent(event, 'data/error')
self.assertTrue('drive0' in pending_jobs)
self.vm.qmp('block-job-complete', device='drive0')
self.assert_no_active_block_jobs()
# Test the base_node parameter
def test_stream_base_node_name(self):
self.assert_no_active_block_jobs()
self.assertNotEqual(qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.imgs[4]),
qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.imgs[3]),
'image file map matches backing file before streaming')
# Error: the base node does not exist
result = self.vm.qmp('block-stream', device='node4', base_node='none', job_id='stream')
self.assert_qmp(result, 'error/class', 'GenericError')
# Error: the base node is not a backing file of the top node
result = self.vm.qmp('block-stream', device='node4', base_node='node6', job_id='stream')
self.assert_qmp(result, 'error/class', 'GenericError')
# Error: the base node is the same as the top node
result = self.vm.qmp('block-stream', device='node4', base_node='node4', job_id='stream')
self.assert_qmp(result, 'error/class', 'GenericError')
# Error: cannot specify 'base' and 'base-node' at the same time
result = self.vm.qmp('block-stream', device='node4', base=self.imgs[2], base_node='node2', job_id='stream')
self.assert_qmp(result, 'error/class', 'GenericError')
# Success: the base node is a backing file of the top node
result = self.vm.qmp('block-stream', device='node4', base_node='node2', job_id='stream')
self.assert_qmp(result, 'return', {})
self.wait_until_completed(drive='stream')
self.assert_no_active_block_jobs()
self.vm.shutdown()
self.assertEqual(qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[4]),
qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[3]),
'image file map matches backing file after streaming')
class TestQuorum(iotests.QMPTestCase):
num_children = 3
children = []
backing = []
def setUp(self):
opts = ['driver=quorum', 'vote-threshold=2']
# Initialize file names and command-line options
for i in range(self.num_children):
child_img = os.path.join(iotests.test_dir, 'img-%d.img' % i)
backing_img = os.path.join(iotests.test_dir, 'backing-%d.img' % i)
self.children.append(child_img)
self.backing.append(backing_img)
qemu_img('create', '-f', iotests.imgfmt, backing_img, '1M')
qemu_io('-f', iotests.imgfmt,
'-c', 'write -P 0x55 0 1024', backing_img)
qemu_img('create', '-f', iotests.imgfmt,
'-o', 'backing_file=%s' % backing_img, child_img)
opts.append("children.%d.file.filename=%s" % (i, child_img))
opts.append("children.%d.node-name=node%d" % (i, i))
# Attach the drive to the VM
self.vm = iotests.VM()
self.vm.add_drive(path = None, opts = ','.join(opts))
self.vm.launch()
def tearDown(self):
self.vm.shutdown()
for img in self.children:
os.remove(img)
for img in self.backing:
os.remove(img)
def test_stream_quorum(self):
if not iotests.supports_quorum():
return
self.assertNotEqual(qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.children[0]),
qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.backing[0]),
'image file map matches backing file before streaming')
self.assert_no_active_block_jobs()
result = self.vm.qmp('block-stream', device='node0', job_id='stream-node0')
self.assert_qmp(result, 'return', {})
self.wait_until_completed(drive='stream-node0')
self.assert_no_active_block_jobs()
self.vm.shutdown()
self.assertEqual(qemu_io('-f', iotests.imgfmt, '-c', 'map', self.children[0]),
qemu_io('-f', iotests.imgfmt, '-c', 'map', self.backing[0]),
'image file map does not match backing file after streaming')
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':
error = True
self.assert_qmp(event, 'data/device', 'drive0')
self.assert_qmp(event, 'data/operation', 'read')
result = self.vm.qmp('query-block-jobs')
if result == {'return': []}:
# Job finished too quickly
continue
self.assert_qmp(result, 'return[0]/paused', False)
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')
error = True
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')
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()
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()
self.vm.pause_drive('drive0')
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(resume=True)
if __name__ == '__main__':
iotests.main(supported_fmts=['qcow2', 'qed'])
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