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Re: [PATCH v4 4/4] tests/qemu-iotests: add case for block-stream compres
From: |
Vladimir Sementsov-Ogievskiy |
Subject: |
Re: [PATCH v4 4/4] tests/qemu-iotests: add case for block-stream compress |
Date: |
Thu, 17 Oct 2019 17:46:14 +0000 |
16.10.2019 19:28, Andrey Shinkevich wrote:
> Add a case to the iotest #030 that tests the 'compress' option for a
> block-stream job.
>
> Signed-off-by: Andrey Shinkevich <address@hidden>
> ---
> tests/qemu-iotests/030 | 51
> +++++++++++++++++++++++++++++++++++++++++++++-
> tests/qemu-iotests/030.out | 4 ++--
> 2 files changed, 52 insertions(+), 3 deletions(-)
>
> diff --git a/tests/qemu-iotests/030 b/tests/qemu-iotests/030
> index f3766f2..f0f0e26 100755
> --- a/tests/qemu-iotests/030
> +++ b/tests/qemu-iotests/030
> @@ -21,7 +21,8 @@
> import time
> import os
> import iotests
> -from iotests import qemu_img, qemu_io
> +from iotests import qemu_img, qemu_io, qemu_img_pipe
> +import json
>
> backing_img = os.path.join(iotests.test_dir, 'backing.img')
> mid_img = os.path.join(iotests.test_dir, 'mid.img')
> @@ -956,6 +957,54 @@ class TestSetSpeed(iotests.QMPTestCase):
>
> self.cancel_and_wait(resume=True)
>
> +class TestCompressed(iotests.QMPTestCase):
> + test_img_init_size = 0
> +
> + def setUp(self):
> + qemu_img('create', '-f', iotests.imgfmt, backing_img, '1M')
> + qemu_img('create', '-f', iotests.imgfmt, '-o',
> + 'backing_file=%s' % backing_img, mid_img)
> + qemu_img('create', '-f', iotests.imgfmt, '-o',
> + 'backing_file=%s' % mid_img, test_img)
> + qemu_io('-c', 'write -P 0x1 0 512k', backing_img)
> + top = json.loads(qemu_img_pipe('info', '--output=json', test_img))
> + self.test_img_init_size = top['actual-size']
> + self.vm = iotests.VM().add_drive(test_img, "backing.node-name=mid," +
> + "backing.backing.node-name=base," +
base node-name is unused actually
> + "compress=on")
> + self.vm.launch()
> +
> + def tearDown(self):
> + self.vm.shutdown()
> + os.remove(test_img)
> + os.remove(mid_img)
> + os.remove(backing_img)
> +
> + def test_stream_compress(self):
> + self.assert_no_active_block_jobs()
> +
> + result = self.vm.qmp('block-stream', device='mid',
> job_id='stream-mid')
> + self.assert_qmp(result, 'return', {})
> +
> + self.wait_until_completed(drive='stream-mid')
> + # Remove other 'JOB_STATUS_CHANGE' events for the job 'stream-mid'
> + self.vm.get_qmp_events(wait=True)
Hmm, I think it's unsafe.. One more event may be still in pipe...
I think, better is just do
self.vm.wait_event(name='BLOCK_JOB_COMPLETED), and ignore JOB_STATUS_CHANGE
events.
> +
> + result = self.vm.qmp('block-stream', device='drive0',
> + job_id='stream-top')
> + self.assert_qmp(result, 'return', {})
> +
> + self.wait_until_completed(drive='stream-top')
> + self.vm.shutdown()
> +
> + top = json.loads(qemu_img_pipe('info', '--output=json', test_img))
> + mid = json.loads(qemu_img_pipe('info', '--output=json', mid_img))
> + base = json.loads(qemu_img_pipe('info', '--output=json',
> backing_img))
> +
> + self.assertEqual(mid['actual-size'], base['actual-size'])
> + self.assertLess(top['actual-size'], mid['actual-size'])
> + self.assertLess(self.test_img_init_size, top['actual-size'])
I think last assertion is covered by previous two.
And I'm still unsure about using actual-size. Direct checking number of
compressed
clusters by qemu-img check maybe better.
> +
> if __name__ == '__main__':
> iotests.main(supported_fmts=['qcow2', 'qed'],
> supported_protocols=['file'])
> diff --git a/tests/qemu-iotests/030.out b/tests/qemu-iotests/030.out
> index 6d9bee1..af8dac1 100644
> --- a/tests/qemu-iotests/030.out
> +++ b/tests/qemu-iotests/030.out
> @@ -1,5 +1,5 @@
> -...........................
> +............................
> ----------------------------------------------------------------------
> -Ran 27 tests
> +Ran 28 tests
>
> OK
>
--
Best regards,
Vladimir
- [PATCH v4 0/4] qcow2: advanced compression options, Andrey Shinkevich, 2019/10/16
- [PATCH v4 2/4] qcow2: Allow writing compressed data of multiple clusters, Andrey Shinkevich, 2019/10/16
- [PATCH v4 3/4] tests/qemu-iotests: add case to write compressed data of multiple clusters, Andrey Shinkevich, 2019/10/16
- [PATCH v4 4/4] tests/qemu-iotests: add case for block-stream compress, Andrey Shinkevich, 2019/10/16
- Re: [PATCH v4 4/4] tests/qemu-iotests: add case for block-stream compress,
Vladimir Sementsov-Ogievskiy <=
- [PATCH v4 1/4] block: support compressed write at generic layer, Andrey Shinkevich, 2019/10/16
- Re: [PATCH v4 0/4] qcow2: advanced compression options, no-reply, 2019/10/16
- Re: [PATCH v4 0/4] qcow2: advanced compression options, no-reply, 2019/10/16