5752f89a78
Reopening bitmaps to RW was broken prior to previous commit. Check that it works now. Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Message-id: 20190927122355.7344-4-vsementsov@virtuozzo.com Signed-off-by: John Snow <jsnow@redhat.com>
161 lines
4.5 KiB
Python
Executable File
161 lines
4.5 KiB
Python
Executable File
#!/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/>.
|
|
#
|
|
|
|
from __future__ import print_function
|
|
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 = ((0x0fff00, 0x10000),
|
|
(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, opts='node-name=node0')
|
|
|
|
def mkVmRo(self):
|
|
return iotests.VM().add_drive(disk, opts='readonly=on,node-name=node0')
|
|
|
|
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)
|
|
|
|
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()
|
|
|
|
def test_reopen_rw(self):
|
|
self.vm = self.mkVm()
|
|
self.vm.launch()
|
|
self.qmpAddBitmap()
|
|
|
|
# Calculate hashes
|
|
|
|
self.writeRegions(regions1)
|
|
sha256_1 = self.getSha256()
|
|
|
|
self.writeRegions(regions2)
|
|
sha256_2 = self.getSha256()
|
|
assert sha256_1 != sha256_2 # Otherwise, it's not very interesting.
|
|
|
|
result = self.vm.qmp('block-dirty-bitmap-clear', node='drive0',
|
|
name='bitmap0')
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
# Start with regions1
|
|
|
|
self.writeRegions(regions1)
|
|
assert sha256_1 == self.getSha256()
|
|
|
|
self.vm.shutdown()
|
|
|
|
self.vm = self.mkVmRo()
|
|
self.vm.launch()
|
|
|
|
assert sha256_1 == self.getSha256()
|
|
|
|
# Check that we are in RO mode and can't modify bitmap.
|
|
self.writeRegions(regions2)
|
|
assert sha256_1 == self.getSha256()
|
|
|
|
# Reopen to RW
|
|
result = self.vm.qmp('x-blockdev-reopen', **{
|
|
'node-name': 'node0',
|
|
'driver': iotests.imgfmt,
|
|
'file': {
|
|
'driver': 'file',
|
|
'filename': disk
|
|
},
|
|
'read-only': False
|
|
})
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
# Check that bitmap is reopened to RW and we can write to it.
|
|
self.writeRegions(regions2)
|
|
assert sha256_2 == self.getSha256()
|
|
|
|
self.vm.shutdown()
|
|
|
|
|
|
if __name__ == '__main__':
|
|
iotests.main(supported_fmts=['qcow2'],
|
|
supported_protocols=['file'])
|