Re: [Qemu-devel] [PATCH v2 for-1.2 2/2] qemu-iotests: add backing file smaller than image test case

[Paolo Bonzini <pbonzini@redhat.com>]

Il 28/08/2012 16:26, Stefan Hajnoczi ha scritto:
> This new test case checks that streaming completes successfully when the
> backing file is smaller than the image file.
> 
> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
> ---
>  tests/qemu-iotests/030     |   33 +++++++++++++++++++++++++++++++++
>  tests/qemu-iotests/030.out |    4 ++--
>  2 files changed, 35 insertions(+), 2 deletions(-)
> 
> diff --git a/tests/qemu-iotests/030 b/tests/qemu-iotests/030
> index f71ab8d..55b16f8 100755
> --- a/tests/qemu-iotests/030
> +++ b/tests/qemu-iotests/030
> @@ -125,6 +125,39 @@ class TestSingleDrive(ImageStreamingTestCase):
>          result = self.vm.qmp('block-stream', device='nonexistent')
>          self.assert_qmp(result, 'error/class', 'DeviceNotFound')
>  
> +
> +class TestSmallerBackingFile(ImageStreamingTestCase):
> +    backing_len = 1 * 1024 * 1024 # MB
> +    image_len = 2 * backing_len
> +
> +    def setUp(self):
> +        self.create_image(backing_img, self.backing_len)
> +        qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img, str(self.image_len))
> +        self.vm = iotests.VM().add_drive(test_img)
> +        self.vm.launch()
> +
> +    # If this hangs, then you are missing a fix to complete streaming when the
> +    # end of the backing file is reached.
> +    def test_stream(self):
> +        self.assert_no_active_streams()
> +
> +        result = self.vm.qmp('block-stream', device='drive0')
> +        self.assert_qmp(result, 'return', {})
> +
> +        completed = False
> +        while not completed:
> +            for event in self.vm.get_qmp_events(wait=True):
> +                if event['event'] == 'BLOCK_JOB_COMPLETED':
> +                    self.assert_qmp(event, 'data/type', 'stream')
> +                    self.assert_qmp(event, 'data/device', 'drive0')
> +                    self.assert_qmp(event, 'data/offset', self.image_len)
> +                    self.assert_qmp(event, 'data/len', self.image_len)
> +                    completed = True
> +
> +        self.assert_no_active_streams()
> +        self.vm.shutdown()
> +
> +
>  class TestStreamStop(ImageStreamingTestCase):
>      image_len = 8 * 1024 * 1024 * 1024 # GB
>  
> diff --git a/tests/qemu-iotests/030.out b/tests/qemu-iotests/030.out
> index 3f8a935..2f7d390 100644
> --- a/tests/qemu-iotests/030.out
> +++ b/tests/qemu-iotests/030.out
> @@ -1,5 +1,5 @@
> -......
> +.......
>  ----------------------------------------------------------------------
> -Ran 6 tests
> +Ran 7 tests
>  
>  OK
> 

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>