Re: [Qemu-devel] [Qemu-block] [PATCH v2 3/4] qemu-iotests: Test that "stop" doesn't drain block jobs

[Max Reitz <mreitz@redhat.com>]

On 03.04.2015 16:05, Fam Zheng wrote:
> Signed-off-by: Fam Zheng <famz@redhat.com>
> ---
>   tests/qemu-iotests/129     | 86 ++++++++++++++++++++++++++++++++++++++++++++++
>   tests/qemu-iotests/129.out |  5 +++
>   tests/qemu-iotests/group   |  1 +
>   3 files changed, 92 insertions(+)
>   create mode 100644 tests/qemu-iotests/129
>   create mode 100644 tests/qemu-iotests/129.out
>
> diff --git a/tests/qemu-iotests/129 b/tests/qemu-iotests/129
> new file mode 100644
> index 0000000..9e87e1c
> --- /dev/null
> +++ b/tests/qemu-iotests/129
> @@ -0,0 +1,86 @@
> +#!/usr/bin/env python
> +#
> +# Tests that "bdrv_drain_all" doesn't drain block jobs
> +#
> +# 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 os
> +import iotests
> +import time
> +
> +class TestStopWithBlockJob(iotests.QMPTestCase):
> +    test_img = os.path.join(iotests.test_dir, 'test.img')
> +    target_img = os.path.join(iotests.test_dir, 'target.img')
> +    base_img = os.path.join(iotests.test_dir, 'base.img')
> +
> +    def setUp(self):
> +        iotests.qemu_img('create', '-f', iotests.imgfmt, self.base_img, "1G")
> +        iotests.qemu_img('create', '-f', iotests.imgfmt, self.test_img, "-b", self.base_img)
> +        iotests.qemu_io('-f', iotests.imgfmt, '-c', 'write -P0x5d 1M 128M', self.test_img)
> +        self.vm = iotests.VM().add_drive(self.test_img)
> +        self.vm.launch()
> +
> +    def tearDown(self):
> +        params = {"device": "drive0",
> +                  "bps": 0,
> +                  "bps_rd": 0,
> +                  "bps_wr": 0,
> +                  "iops": 0,
> +                  "iops_rd": 0,
> +                  "iops_wr": 0,
> +                 }
> +        result = self.vm.qmp("block_set_io_throttle", conv_keys=False,
> +                             **params)
> +        self.vm.shutdown()
> +
> +    def do_test_stop(self, cmd, **args):
> +        """Test 'stop' while block job is running on a throttled drive.
> +        The 'stop' command shouldn't drain the job"""
> +        params = {"device": "drive0",
> +                  "bps": 1024,
> +                  "bps_rd": 0,
> +                  "bps_wr": 0,
> +                  "iops": 0,
> +                  "iops_rd": 0,
> +                  "iops_wr": 0,
> +                 }
> +        result = self.vm.qmp("block_set_io_throttle", conv_keys=False,
> +                             **params)
> +        self.assert_qmp(result, 'return', {})
> +        result = self.vm.qmp(cmd, **args)
> +        self.assert_qmp(result, 'return', {})
> +        result = self.vm.qmp("stop")
> +        self.assert_qmp(result, 'return', {})
> +        result = self.vm.qmp("query-block-jobs")
> +        self.assert_qmp(result, 'return[0]/busy', True)

I don't know why, but this assertion fails in tmpfs (for me, at least).

Max

> +        self.assert_qmp(result, 'return[0]/ready', False)
> +
> +    def test_drive_mirror(self):
> +        self.do_test_stop("drive-mirror", device="drive0",
> +                          target=self.target_img,
> +                          sync="full")
> +
> +    def test_drive_backup(self):
> +        self.do_test_stop("drive-backup", device="drive0",
> +                          target=self.target_img,
> +                          sync="full")
> +
> +    def test_block_commit(self):
> +        self.do_test_stop("block-commit", device="drive0")
> +
> +if __name__ == '__main__':
> +    iotests.main(supported_fmts=["qcow2"])
> diff --git a/tests/qemu-iotests/129.out b/tests/qemu-iotests/129.out
> new file mode 100644
> index 0000000..8d7e996
> --- /dev/null
> +++ b/tests/qemu-iotests/129.out
> @@ -0,0 +1,5 @@
> +...
> +----------------------------------------------------------------------
> +Ran 3 tests
> +
> +OK
> diff --git a/tests/qemu-iotests/group b/tests/qemu-iotests/group
> index 6262127..69071ac 100644
> --- a/tests/qemu-iotests/group
> +++ b/tests/qemu-iotests/group
> @@ -124,3 +124,4 @@
>   121 rw auto
>   123 rw auto quick
>   128 rw auto quick
> +129 rw auto quick