423edd9a31
This is only needed for Python 2, which we do not support anymore. Cc: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Acked-by: Alex Bennée <alex.bennee@linaro.org> Acked-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20200204160604.19883-1-pbonzini@redhat.com> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
160 lines
4.5 KiB
Python
Executable File
160 lines
4.5 KiB
Python
Executable File
#!/usr/bin/env python3
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#
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# Tests for persistent dirty bitmaps.
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#
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# Copyright: Vladimir Sementsov-Ogievskiy 2015-2017
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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import os
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import re
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import iotests
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from iotests import qemu_img
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disk = os.path.join(iotests.test_dir, 'disk')
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disk_size = 0x40000000 # 1G
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# regions for qemu_io: (start, count) in bytes
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regions1 = ((0x0fff00, 0x10000),
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(0x200000, 0x100000))
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regions2 = ((0x10000000, 0x20000),
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(0x3fff0000, 0x10000))
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class TestPersistentDirtyBitmap(iotests.QMPTestCase):
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def setUp(self):
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qemu_img('create', '-f', iotests.imgfmt, disk, str(disk_size))
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def tearDown(self):
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os.remove(disk)
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def mkVm(self):
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return iotests.VM().add_drive(disk, opts='node-name=node0')
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def mkVmRo(self):
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return iotests.VM().add_drive(disk, opts='readonly=on,node-name=node0')
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def getSha256(self):
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result = self.vm.qmp('x-debug-block-dirty-bitmap-sha256',
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node='drive0', name='bitmap0')
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return result['return']['sha256']
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def checkBitmap(self, sha256):
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result = self.vm.qmp('x-debug-block-dirty-bitmap-sha256',
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node='drive0', name='bitmap0')
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self.assert_qmp(result, 'return/sha256', sha256);
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def writeRegions(self, regions):
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for r in regions:
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self.vm.hmp_qemu_io('drive0',
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'write %d %d' % r)
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def qmpAddBitmap(self):
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self.vm.qmp('block-dirty-bitmap-add', node='drive0',
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name='bitmap0', persistent=True)
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def test_persistent(self):
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self.vm = self.mkVm()
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self.vm.launch()
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self.qmpAddBitmap()
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self.writeRegions(regions1)
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sha256 = self.getSha256()
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self.vm.shutdown()
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self.vm = self.mkVmRo()
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self.vm.launch()
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self.vm.shutdown()
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#catch 'Persistent bitmaps are lost' possible error
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log = self.vm.get_log()
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log = re.sub(r'^\[I \d+\.\d+\] OPENED\n', '', log)
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log = re.sub(r'\[I \+\d+\.\d+\] CLOSED\n?$', '', log)
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if log:
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print(log)
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self.vm = self.mkVm()
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self.vm.launch()
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self.checkBitmap(sha256)
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self.writeRegions(regions2)
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sha256 = self.getSha256()
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self.vm.shutdown()
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self.vm.launch()
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self.checkBitmap(sha256)
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self.vm.shutdown()
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def test_reopen_rw(self):
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self.vm = self.mkVm()
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self.vm.launch()
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self.qmpAddBitmap()
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# Calculate hashes
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self.writeRegions(regions1)
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sha256_1 = self.getSha256()
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self.writeRegions(regions2)
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sha256_2 = self.getSha256()
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assert sha256_1 != sha256_2 # Otherwise, it's not very interesting.
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result = self.vm.qmp('block-dirty-bitmap-clear', node='drive0',
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name='bitmap0')
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self.assert_qmp(result, 'return', {})
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# Start with regions1
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self.writeRegions(regions1)
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assert sha256_1 == self.getSha256()
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self.vm.shutdown()
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self.vm = self.mkVmRo()
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self.vm.launch()
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assert sha256_1 == self.getSha256()
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# Check that we are in RO mode and can't modify bitmap.
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self.writeRegions(regions2)
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assert sha256_1 == self.getSha256()
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# Reopen to RW
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result = self.vm.qmp('x-blockdev-reopen', **{
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'node-name': 'node0',
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'driver': iotests.imgfmt,
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'file': {
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'driver': 'file',
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'filename': disk
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},
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'read-only': False
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})
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self.assert_qmp(result, 'return', {})
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# Check that bitmap is reopened to RW and we can write to it.
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self.writeRegions(regions2)
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assert sha256_2 == self.getSha256()
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self.vm.shutdown()
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if __name__ == '__main__':
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iotests.main(supported_fmts=['qcow2'],
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supported_protocols=['file'])
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