9cc0f19de2
The idea is to let the top level bs have a big request alignment with blkdebug, so that the aio_write request issued from monitor will be serialised. This tests that QEMU doesn't crash upon the read request from the backup job's write notifier, which is a very special case of "reentrant" request. Signed-off-by: Fam Zheng <famz@redhat.com> Message-id: 1448962590-2842-4-git-send-email-famz@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
113 lines
4.1 KiB
Python
Executable File
113 lines
4.1 KiB
Python
Executable File
#!/usr/bin/env python
|
|
#
|
|
# 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')
|
|
|
|
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, 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)
|
|
self.assertEqual(-1, qemu_io('-c', 'read -P0x41 0 512', target_img).find("verification failed"))
|
|
|
|
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')
|
|
|
|
if __name__ == '__main__':
|
|
iotests.main(supported_fmts=['qcow2', 'qed'])
|