mirror of
https://github.com/qemu/qemu.git
synced 2024-11-24 19:33:39 +08:00
e9039c0451
A forthcoming commit updates qemu_io() to raise an exception on non-zero return by default, and changes its return type. In preparation, simplify some calls to qemu_io() that assert that specific error message strings do not appear in qemu-io's output. Asserting that all of these calls return a status code of zero will be a more robust way to guard against failure. Signed-off-by: John Snow <jsnow@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Hanna Reitz <hreitz@redhat.com> Message-Id: <20220418211504.943969-4-jsnow@redhat.com> Signed-off-by: Hanna Reitz <hreitz@redhat.com>
349 lines
14 KiB
Python
Executable File
349 lines
14 KiB
Python
Executable File
#!/usr/bin/env python3
|
|
# group: rw backing
|
|
#
|
|
# Tests for drive-backup
|
|
#
|
|
# Copyright (C) 2013 Red Hat, Inc.
|
|
#
|
|
# Based on 041.
|
|
#
|
|
# 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, create_image
|
|
|
|
backing_img = os.path.join(iotests.test_dir, 'backing.img')
|
|
test_img = os.path.join(iotests.test_dir, 'test.img')
|
|
target_img = os.path.join(iotests.test_dir, 'target.img')
|
|
|
|
def img_create(img, fmt=iotests.imgfmt, size='64M', **kwargs):
|
|
fullname = os.path.join(iotests.test_dir, '%s.%s' % (img, fmt))
|
|
optargs = []
|
|
for k,v in kwargs.items():
|
|
optargs = optargs + ['-o', '%s=%s' % (k,v)]
|
|
args = ['create', '-f', fmt] + optargs + [fullname, size]
|
|
iotests.qemu_img(*args)
|
|
return fullname
|
|
|
|
def try_remove(img):
|
|
try:
|
|
os.remove(img)
|
|
except OSError:
|
|
pass
|
|
|
|
def io_write_patterns(img, patterns):
|
|
for pattern in patterns:
|
|
iotests.qemu_io('-c', 'write -P%s %s %s' % pattern, img)
|
|
|
|
|
|
class TestSyncModesNoneAndTop(iotests.QMPTestCase):
|
|
image_len = 64 * 1024 * 1024 # MB
|
|
|
|
def setUp(self):
|
|
create_image(backing_img, TestSyncModesNoneAndTop.image_len)
|
|
qemu_img('create', '-f', iotests.imgfmt,
|
|
'-o', 'backing_file=%s' % backing_img, '-F', 'raw', test_img)
|
|
qemu_io('-c', 'write -P0x41 0 512', test_img)
|
|
qemu_io('-c', 'write -P0xd5 1M 32k', test_img)
|
|
qemu_io('-c', 'write -P0xdc 32M 124k', test_img)
|
|
qemu_io('-c', 'write -P0xdc 67043328 64k', 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_top(self):
|
|
self.assert_no_active_block_jobs()
|
|
result = self.vm.qmp('drive-backup', device='drive0', sync='top',
|
|
format=iotests.imgfmt, target=target_img)
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
self.wait_until_completed(check_offset=False)
|
|
|
|
self.assert_no_active_block_jobs()
|
|
self.vm.shutdown()
|
|
self.assertTrue(iotests.compare_images(test_img, target_img),
|
|
'target image does not match source after backup')
|
|
|
|
def test_cancel_sync_none(self):
|
|
self.assert_no_active_block_jobs()
|
|
|
|
result = self.vm.qmp('drive-backup', device='drive0',
|
|
sync='none', target=target_img)
|
|
self.assert_qmp(result, 'return', {})
|
|
time.sleep(1)
|
|
self.vm.hmp_qemu_io('drive0', 'write -P0x5e 0 512')
|
|
self.vm.hmp_qemu_io('drive0', 'aio_flush')
|
|
# Verify that the original contents exist in the target image.
|
|
|
|
event = self.cancel_and_wait()
|
|
self.assert_qmp(event, 'data/type', 'backup')
|
|
|
|
self.vm.shutdown()
|
|
time.sleep(1)
|
|
qemu_io('-c', 'read -P0x41 0 512', target_img)
|
|
|
|
class TestBeforeWriteNotifier(iotests.QMPTestCase):
|
|
def setUp(self):
|
|
self.vm = iotests.VM().add_drive_raw("file=blkdebug::null-co://,id=drive0,align=65536,driver=blkdebug")
|
|
self.vm.launch()
|
|
|
|
def tearDown(self):
|
|
self.vm.shutdown()
|
|
os.remove(target_img)
|
|
|
|
def test_before_write_notifier(self):
|
|
self.vm.pause_drive("drive0")
|
|
result = self.vm.qmp('drive-backup', device='drive0',
|
|
sync='full', target=target_img,
|
|
format="file", speed=1)
|
|
self.assert_qmp(result, 'return', {})
|
|
result = self.vm.qmp('block-job-pause', device="drive0")
|
|
self.assert_qmp(result, 'return', {})
|
|
# Speed is low enough that this must be an uncopied range, which will
|
|
# trigger the before write notifier
|
|
self.vm.hmp_qemu_io('drive0', 'aio_write -P 1 512512 512')
|
|
self.vm.resume_drive("drive0")
|
|
result = self.vm.qmp('block-job-resume', device="drive0")
|
|
self.assert_qmp(result, 'return', {})
|
|
event = self.cancel_and_wait()
|
|
self.assert_qmp(event, 'data/type', 'backup')
|
|
|
|
class BackupTest(iotests.QMPTestCase):
|
|
def setUp(self):
|
|
self.vm = iotests.VM()
|
|
self.test_img = img_create('test')
|
|
self.dest_img = img_create('dest')
|
|
self.dest_img2 = img_create('dest2')
|
|
self.ref_img = img_create('ref')
|
|
self.vm.add_drive(self.test_img)
|
|
self.vm.launch()
|
|
|
|
def tearDown(self):
|
|
self.vm.shutdown()
|
|
try_remove(self.test_img)
|
|
try_remove(self.dest_img)
|
|
try_remove(self.dest_img2)
|
|
try_remove(self.ref_img)
|
|
|
|
def hmp_io_writes(self, drive, patterns):
|
|
for pattern in patterns:
|
|
self.vm.hmp_qemu_io(drive, 'write -P%s %s %s' % pattern)
|
|
self.vm.hmp_qemu_io(drive, 'flush')
|
|
|
|
def qmp_backup_and_wait(self, cmd='drive-backup', serror=None,
|
|
aerror=None, **kwargs):
|
|
if not self.qmp_backup(cmd, serror, **kwargs):
|
|
return False
|
|
return self.qmp_backup_wait(kwargs['device'], aerror)
|
|
|
|
def qmp_backup(self, cmd='drive-backup',
|
|
error=None, **kwargs):
|
|
self.assertTrue('device' in kwargs)
|
|
res = self.vm.qmp(cmd, **kwargs)
|
|
if error:
|
|
self.assert_qmp(res, 'error/desc', error)
|
|
return False
|
|
self.assert_qmp(res, 'return', {})
|
|
return True
|
|
|
|
def qmp_backup_wait(self, device, error=None):
|
|
event = self.vm.event_wait(name="BLOCK_JOB_COMPLETED",
|
|
match={'data': {'device': device}})
|
|
self.assertNotEqual(event, None)
|
|
try:
|
|
failure = self.dictpath(event, 'data/error')
|
|
except AssertionError:
|
|
# Backup succeeded.
|
|
self.assert_qmp(event, 'data/offset', event['data']['len'])
|
|
return True
|
|
else:
|
|
# Failure.
|
|
self.assert_qmp(event, 'data/error', qerror)
|
|
return False
|
|
|
|
def test_overlapping_writes(self):
|
|
# Write something to back up
|
|
self.hmp_io_writes('drive0', [('42', '0M', '2M')])
|
|
|
|
# Create a reference backup
|
|
self.qmp_backup_and_wait(device='drive0', format=iotests.imgfmt,
|
|
sync='full', target=self.ref_img,
|
|
auto_dismiss=False)
|
|
res = self.vm.qmp('block-job-dismiss', id='drive0')
|
|
self.assert_qmp(res, 'return', {})
|
|
|
|
# Now to the test backup: We simulate the following guest
|
|
# writes:
|
|
# (1) [1M + 64k, 1M + 128k): Afterwards, everything in that
|
|
# area should be in the target image, and we must not copy
|
|
# it again (because the source image has changed now)
|
|
# (64k is the job's cluster size)
|
|
# (2) [1M, 2M): The backup job must not get overeager. It
|
|
# must copy [1M, 1M + 64k) and [1M + 128k, 2M) separately,
|
|
# but not the area in between.
|
|
|
|
self.qmp_backup(device='drive0', format=iotests.imgfmt, sync='full',
|
|
target=self.dest_img, speed=1, auto_dismiss=False)
|
|
|
|
self.hmp_io_writes('drive0', [('23', '%ik' % (1024 + 64), '64k'),
|
|
('66', '1M', '1M')])
|
|
|
|
# Let the job complete
|
|
res = self.vm.qmp('block-job-set-speed', device='drive0', speed=0)
|
|
self.assert_qmp(res, 'return', {})
|
|
self.qmp_backup_wait('drive0')
|
|
res = self.vm.qmp('block-job-dismiss', id='drive0')
|
|
self.assert_qmp(res, 'return', {})
|
|
|
|
self.assertTrue(iotests.compare_images(self.ref_img, self.dest_img),
|
|
'target image does not match reference image')
|
|
|
|
def test_dismiss_false(self):
|
|
res = self.vm.qmp('query-block-jobs')
|
|
self.assert_qmp(res, 'return', [])
|
|
self.qmp_backup_and_wait(device='drive0', format=iotests.imgfmt,
|
|
sync='full', target=self.dest_img,
|
|
auto_dismiss=True)
|
|
res = self.vm.qmp('query-block-jobs')
|
|
self.assert_qmp(res, 'return', [])
|
|
|
|
def test_dismiss_true(self):
|
|
res = self.vm.qmp('query-block-jobs')
|
|
self.assert_qmp(res, 'return', [])
|
|
self.qmp_backup_and_wait(device='drive0', format=iotests.imgfmt,
|
|
sync='full', target=self.dest_img,
|
|
auto_dismiss=False)
|
|
res = self.vm.qmp('query-block-jobs')
|
|
self.assert_qmp(res, 'return[0]/status', 'concluded')
|
|
res = self.vm.qmp('block-job-dismiss', id='drive0')
|
|
self.assert_qmp(res, 'return', {})
|
|
res = self.vm.qmp('query-block-jobs')
|
|
self.assert_qmp(res, 'return', [])
|
|
|
|
def test_dismiss_bad_id(self):
|
|
res = self.vm.qmp('query-block-jobs')
|
|
self.assert_qmp(res, 'return', [])
|
|
res = self.vm.qmp('block-job-dismiss', id='foobar')
|
|
self.assert_qmp(res, 'error/class', 'DeviceNotActive')
|
|
|
|
def test_dismiss_collision(self):
|
|
res = self.vm.qmp('query-block-jobs')
|
|
self.assert_qmp(res, 'return', [])
|
|
self.qmp_backup_and_wait(device='drive0', format=iotests.imgfmt,
|
|
sync='full', target=self.dest_img,
|
|
auto_dismiss=False)
|
|
res = self.vm.qmp('query-block-jobs')
|
|
self.assert_qmp(res, 'return[0]/status', 'concluded')
|
|
# Leave zombie job un-dismissed, observe a failure:
|
|
res = self.qmp_backup_and_wait(serror="Job ID 'drive0' already in use",
|
|
device='drive0', format=iotests.imgfmt,
|
|
sync='full', target=self.dest_img2,
|
|
auto_dismiss=False)
|
|
self.assertEqual(res, False)
|
|
# OK, dismiss the zombie.
|
|
res = self.vm.qmp('block-job-dismiss', id='drive0')
|
|
self.assert_qmp(res, 'return', {})
|
|
res = self.vm.qmp('query-block-jobs')
|
|
self.assert_qmp(res, 'return', [])
|
|
# Ensure it's really gone.
|
|
self.qmp_backup_and_wait(device='drive0', format=iotests.imgfmt,
|
|
sync='full', target=self.dest_img2,
|
|
auto_dismiss=False)
|
|
|
|
def dismissal_failure(self, dismissal_opt):
|
|
res = self.vm.qmp('query-block-jobs')
|
|
self.assert_qmp(res, 'return', [])
|
|
# Give blkdebug something to chew on
|
|
self.hmp_io_writes('drive0',
|
|
(('0x9a', 0, 512),
|
|
('0x55', '8M', '352k'),
|
|
('0x78', '15872k', '1M')))
|
|
# Add destination node via blkdebug
|
|
res = self.vm.qmp('blockdev-add',
|
|
node_name='target0',
|
|
driver=iotests.imgfmt,
|
|
file={
|
|
'driver': 'blkdebug',
|
|
'image': {
|
|
'driver': 'file',
|
|
'filename': self.dest_img
|
|
},
|
|
'inject-error': [{
|
|
'event': 'write_aio',
|
|
'errno': 5,
|
|
'immediately': False,
|
|
'once': True
|
|
}],
|
|
})
|
|
self.assert_qmp(res, 'return', {})
|
|
|
|
res = self.qmp_backup(cmd='blockdev-backup',
|
|
device='drive0', target='target0',
|
|
on_target_error='stop',
|
|
sync='full',
|
|
auto_dismiss=dismissal_opt)
|
|
self.assertTrue(res)
|
|
event = self.vm.event_wait(name="BLOCK_JOB_ERROR",
|
|
match={'data': {'device': 'drive0'}})
|
|
self.assertNotEqual(event, None)
|
|
# OK, job should pause, but it can't do it immediately, as it can't
|
|
# cancel other parallel requests (which didn't fail)
|
|
with iotests.Timeout(60, "Timeout waiting for backup actually paused"):
|
|
while True:
|
|
res = self.vm.qmp('query-block-jobs')
|
|
if res['return'][0]['status'] == 'paused':
|
|
break
|
|
self.assert_qmp(res, 'return[0]/status', 'paused')
|
|
res = self.vm.qmp('block-job-dismiss', id='drive0')
|
|
self.assert_qmp(res, 'error/desc',
|
|
"Job 'drive0' in state 'paused' cannot accept"
|
|
" command verb 'dismiss'")
|
|
res = self.vm.qmp('query-block-jobs')
|
|
self.assert_qmp(res, 'return[0]/status', 'paused')
|
|
# OK, unstick job and move forward.
|
|
res = self.vm.qmp('block-job-resume', device='drive0')
|
|
self.assert_qmp(res, 'return', {})
|
|
# And now we need to wait for it to conclude;
|
|
res = self.qmp_backup_wait(device='drive0')
|
|
self.assertTrue(res)
|
|
if not dismissal_opt:
|
|
# Job should now be languishing:
|
|
res = self.vm.qmp('query-block-jobs')
|
|
self.assert_qmp(res, 'return[0]/status', 'concluded')
|
|
res = self.vm.qmp('block-job-dismiss', id='drive0')
|
|
self.assert_qmp(res, 'return', {})
|
|
res = self.vm.qmp('query-block-jobs')
|
|
self.assert_qmp(res, 'return', [])
|
|
|
|
def test_dismiss_premature(self):
|
|
self.dismissal_failure(False)
|
|
|
|
def test_dismiss_erroneous(self):
|
|
self.dismissal_failure(True)
|
|
|
|
if __name__ == '__main__':
|
|
iotests.main(supported_fmts=['qcow2', 'qed'],
|
|
supported_protocols=['file'])
|