iotests: test qcow2 persistent dirty bitmap

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-id: 20170628120530.31251-27-vsementsov@virtuozzo.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
This commit is contained in:
Vladimir Sementsov-Ogievskiy 2017-06-28 15:05:26 +03:00 committed by Max Reitz
parent a3b52535e8
commit fc905d3a0c
3 changed files with 111 additions and 0 deletions

105
tests/qemu-iotests/165 Executable file
View File

@ -0,0 +1,105 @@
#!/usr/bin/env python
#
# Tests for persistent dirty bitmaps.
#
# Copyright: Vladimir Sementsov-Ogievskiy 2015-2017
#
# 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 os
import re
import iotests
from iotests import qemu_img
disk = os.path.join(iotests.test_dir, 'disk')
disk_size = 0x40000000 # 1G
# regions for qemu_io: (start, count) in bytes
regions1 = ((0, 0x100000),
(0x200000, 0x100000))
regions2 = ((0x10000000, 0x20000),
(0x3fff0000, 0x10000))
class TestPersistentDirtyBitmap(iotests.QMPTestCase):
def setUp(self):
qemu_img('create', '-f', iotests.imgfmt, disk, str(disk_size))
def tearDown(self):
os.remove(disk)
def mkVm(self):
return iotests.VM().add_drive(disk)
def mkVmRo(self):
return iotests.VM().add_drive(disk, opts='readonly=on')
def getSha256(self):
result = self.vm.qmp('x-debug-block-dirty-bitmap-sha256',
node='drive0', name='bitmap0')
return result['return']['sha256']
def checkBitmap(self, sha256):
result = self.vm.qmp('x-debug-block-dirty-bitmap-sha256',
node='drive0', name='bitmap0')
self.assert_qmp(result, 'return/sha256', sha256);
def writeRegions(self, regions):
for r in regions:
self.vm.hmp_qemu_io('drive0',
'write %d %d' % r)
def qmpAddBitmap(self):
self.vm.qmp('block-dirty-bitmap-add', node='drive0',
name='bitmap0', persistent=True, autoload=True)
def test_persistent(self):
self.vm = self.mkVm()
self.vm.launch()
self.qmpAddBitmap()
self.writeRegions(regions1)
sha256 = self.getSha256()
self.vm.shutdown()
self.vm = self.mkVmRo()
self.vm.launch()
self.vm.shutdown()
#catch 'Persistent bitmaps are lost' possible error
log = self.vm.get_log()
log = re.sub(r'^\[I \d+\.\d+\] OPENED\n', '', log)
log = re.sub(r'\[I \+\d+\.\d+\] CLOSED\n?$', '', log)
if log:
print log
self.vm = self.mkVm()
self.vm.launch()
self.checkBitmap(sha256)
self.writeRegions(regions2)
sha256 = self.getSha256()
self.vm.shutdown()
self.vm.launch()
self.checkBitmap(sha256)
self.vm.shutdown()
if __name__ == '__main__':
iotests.main(supported_fmts=['qcow2'])

View File

@ -0,0 +1,5 @@
.
----------------------------------------------------------------------
Ran 1 tests
OK

View File

@ -163,6 +163,7 @@
159 rw auto quick 159 rw auto quick
160 rw auto quick 160 rw auto quick
162 auto quick 162 auto quick
165 rw auto quick
170 rw auto quick 170 rw auto quick
171 rw auto quick 171 rw auto quick
172 auto 172 auto