Re: [Qemu-devel] [PATCH v2 5/6] qemu-iotests: Add test case for mirror with unmap

[John Snow <jsnow@redhat.com>]

On 05/06/2015 12:52 AM, Fam Zheng wrote:
> This checks that the discard on mirror source that effectively zeroes
> data is also reflected by the data of target.
> 
> Signed-off-by: Fam Zheng <famz@redhat.com>
> ---
>  tests/qemu-iotests/131     | 59 ++++++++++++++++++++++++++++++++++++++++++++++
>  tests/qemu-iotests/131.out |  5 ++++
>  tests/qemu-iotests/group   |  1 +
>  3 files changed, 65 insertions(+)
>  create mode 100644 tests/qemu-iotests/131
>  create mode 100644 tests/qemu-iotests/131.out
> 
> diff --git a/tests/qemu-iotests/131 b/tests/qemu-iotests/131
> new file mode 100644
> index 0000000..f53ef6e
> --- /dev/null
> +++ b/tests/qemu-iotests/131
> @@ -0,0 +1,59 @@
> +#!/usr/bin/env python
> +#
> +# Test mirror with unmap
> +#
> +# Copyright (C) 2015 Red Hat, Inc.
> +#
> +# 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 time
> +import os
> +import iotests
> +from iotests import qemu_img, qemu_io
> +
> +test_img = os.path.join(iotests.test_dir, 'test.img')
> +target_img = os.path.join(iotests.test_dir, 'target.img')
> +
> +class TestSingleDrive(iotests.QMPTestCase):
> +    image_len = 2 * 1024 * 1024 # MB
> +
> +    def setUp(self):
> +        # Write data to the image so we can compare later
> +        qemu_img('create', '-f', iotests.imgfmt, test_img, str(TestSingleDrive.image_len))
> +        qemu_io('-f', iotests.imgfmt, '-c', 'write -P0x5d 0 2M', test_img)
> +
> +        self.vm = iotests.VM().add_drive(test_img, 'discard=unmap')
> +        self.vm.launch()
> +
> +    def tearDown(self):
> +        self.vm.shutdown()
> +        os.remove(test_img)
> +        try:
> +            os.remove(target_img)
> +        except OSError:
> +            pass
> +
> +    def test_mirror_discard(self):
> +        result = self.vm.qmp('drive-mirror', device='drive0', sync='full',
> +                             target=target_img)
> +        self.assert_qmp(result, 'return', {})
> +        self.vm.hmp_qemu_io('drive0', 'discard 0 64k')
> +        self.complete_and_wait('drive0')
> +        self.vm.shutdown()
> +        self.assertTrue(iotests.compare_images(test_img, target_img),
> +                        'target image does not match source after mirroring')
> +
> +if __name__ == '__main__':
> +    iotests.main(supported_fmts=['raw', 'qcow2'])
> diff --git a/tests/qemu-iotests/131.out b/tests/qemu-iotests/131.out
> new file mode 100644
> index 0000000..ae1213e
> --- /dev/null
> +++ b/tests/qemu-iotests/131.out
> @@ -0,0 +1,5 @@
> +.
> +----------------------------------------------------------------------
> +Ran 1 tests
> +
> +OK
> diff --git a/tests/qemu-iotests/group b/tests/qemu-iotests/group
> index 6ca3466..34b16cb 100644
> --- a/tests/qemu-iotests/group
> +++ b/tests/qemu-iotests/group
> @@ -128,3 +128,4 @@
>  128 rw auto quick
>  129 rw auto quick
>  130 rw auto quick
> +131 rw auto quick
> 

Reviewed-by: John Snow <jsnow@redhat.com>