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iotests: Test committing to overridden backing
Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com>
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@ -911,6 +911,67 @@ class TestCommitWithFilters(iotests.QMPTestCase):
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# 3 has been comitted into 2
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self.pattern_files[3] = self.img2
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class TestCommitWithOverriddenBacking(iotests.QMPTestCase):
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img_base_a = os.path.join(iotests.test_dir, 'base_a.img')
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img_base_b = os.path.join(iotests.test_dir, 'base_b.img')
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img_top = os.path.join(iotests.test_dir, 'top.img')
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def setUp(self):
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qemu_img('create', '-f', iotests.imgfmt, self.img_base_a, '1M')
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qemu_img('create', '-f', iotests.imgfmt, self.img_base_b, '1M')
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qemu_img('create', '-f', iotests.imgfmt, '-b', self.img_base_a, \
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self.img_top)
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self.vm = iotests.VM()
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self.vm.launch()
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# Use base_b instead of base_a as the backing of top
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result = self.vm.qmp('blockdev-add', **{
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'node-name': 'top',
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'driver': iotests.imgfmt,
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'file': {
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'driver': 'file',
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'filename': self.img_top
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},
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'backing': {
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'node-name': 'base',
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'driver': iotests.imgfmt,
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'file': {
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'driver': 'file',
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'filename': self.img_base_b
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}
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}
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})
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self.assert_qmp(result, 'return', {})
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def tearDown(self):
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self.vm.shutdown()
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os.remove(self.img_top)
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os.remove(self.img_base_a)
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os.remove(self.img_base_b)
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def test_commit_to_a(self):
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# Try committing to base_a (which should fail, as top's
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# backing image is base_b instead)
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result = self.vm.qmp('block-commit',
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job_id='commit',
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device='top',
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base=self.img_base_a)
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self.assert_qmp(result, 'error/class', 'GenericError')
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def test_commit_to_b(self):
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# Try committing to base_b (which should work, since that is
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# actually top's backing image)
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result = self.vm.qmp('block-commit',
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job_id='commit',
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device='top',
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base=self.img_base_b)
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self.assert_qmp(result, 'return', {})
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self.vm.event_wait('BLOCK_JOB_READY')
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self.vm.qmp('block-job-complete', device='commit')
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self.vm.event_wait('BLOCK_JOB_COMPLETED')
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if __name__ == '__main__':
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iotests.main(supported_fmts=['qcow2', 'qed'],
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supported_protocols=['file'])
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@ -1,5 +1,5 @@
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...............................................................
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.................................................................
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----------------------------------------------------------------------
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Ran 63 tests
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Ran 65 tests
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OK
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