[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [PATCH v9 13/13] iotests: add dirty bitmap postcopy tes
From: |
Fam Zheng |
Subject: |
Re: [Qemu-devel] [PATCH v9 13/13] iotests: add dirty bitmap postcopy test |
Date: |
Thu, 28 Dec 2017 14:33:30 +0800 |
User-agent: |
Mutt/1.9.1 (2017-09-22) |
On Wed, 12/20 18:49, Vladimir Sementsov-Ogievskiy wrote:
> Test
> - start two vms (vm_a, vm_b)
>
> - in a
> - do writes from set A
> - do writes from set B
> - fix bitmap sha256
> - clear bitmap
> - do writes from set A
> - start migration
> - than, in b
> - wait vm start (postcopy should start)
> - do writes from set B
> - check bitmap sha256
>
> The test should verify postcopy migration and then merging with delta
> (changes in target, during postcopy process).
>
> Reduce supported cache modes to only 'none', because with cache on time
> from source.STOP to target.RESUME is unpredictable and we can fail with
> timout while waiting for target.RESUME.
>
> Signed-off-by: Vladimir Sementsov-Ogievskiy <address@hidden>
> ---
> tests/qemu-iotests/199 | 105
> ++++++++++++++++++++++++++++++++++++++++++
> tests/qemu-iotests/199.out | 5 ++
> tests/qemu-iotests/group | 1 +
> tests/qemu-iotests/iotests.py | 7 ++-
> 4 files changed, 117 insertions(+), 1 deletion(-)
> create mode 100755 tests/qemu-iotests/199
> create mode 100644 tests/qemu-iotests/199.out
>
> diff --git a/tests/qemu-iotests/199 b/tests/qemu-iotests/199
> new file mode 100755
> index 0000000000..f872040a81
> --- /dev/null
> +++ b/tests/qemu-iotests/199
> @@ -0,0 +1,105 @@
> +#!/usr/bin/env python
> +#
> +# Tests for dirty bitmaps postcopy migration.
> +#
> +# Copyright (c) 2016-2017 Virtuozzo International GmbH. All rights reserved.
> +#
> +# 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
> +from iotests import qemu_img
> +
> +disk_a = os.path.join(iotests.test_dir, 'disk_a')
> +disk_b = os.path.join(iotests.test_dir, 'disk_b')
> +size = '256G'
> +fifo = os.path.join(iotests.test_dir, 'mig_fifo')
> +
> +class TestDirtyBitmapPostcopyMigration(iotests.QMPTestCase):
> +
> + def tearDown(self):
> + self.vm_a.shutdown()
> + self.vm_b.shutdown()
> + os.remove(disk_a)
> + os.remove(disk_b)
> + os.remove(fifo)
> +
> + def setUp(self):
> + os.mkfifo(fifo)
> + qemu_img('create', '-f', iotests.imgfmt, disk_a, size)
> + qemu_img('create', '-f', iotests.imgfmt, disk_b, size)
> + self.vm_a = iotests.VM(path_suffix='a').add_drive(disk_a)
> + self.vm_b = iotests.VM(path_suffix='b').add_drive(disk_b)
> + self.vm_b.add_incoming("exec: cat '" + fifo + "'")
> + self.vm_a.launch()
> + self.vm_b.launch()
> +
> + def test_postcopy(self):
> + write_size = 0x40000000
> + granularity = 512
> + chunk = 4096
> +
> + result = self.vm_a.qmp('block-dirty-bitmap-add', node='drive0',
> + name='bitmap', granularity=granularity)
> + self.assert_qmp(result, 'return', {});
> +
> + s = 0
> + while s < write_size:
> + self.vm_a.hmp_qemu_io('drive0', 'write %d %d' % (s, chunk))
> + s += 0x10000
> + s = 0x8000
> + while s < write_size:
> + self.vm_a.hmp_qemu_io('drive0', 'write %d %d' % (s, chunk))
> + s += 0x10000
> +
> + result = self.vm_a.qmp('x-debug-block-dirty-bitmap-sha256',
> + node='drive0', name='bitmap')
> + sha256 = result['return']['sha256']
> +
> + result = self.vm_a.qmp('block-dirty-bitmap-clear', node='drive0',
> + name='bitmap')
> + self.assert_qmp(result, 'return', {});
> + s = 0
> + while s < write_size:
> + self.vm_a.hmp_qemu_io('drive0', 'write %d %d' % (s, chunk))
> + s += 0x10000
> +
> + result = self.vm_a.qmp('migrate-set-capabilities',
> + capabilities=[{'capability': 'dirty-bitmaps',
> + 'state': True}])
> + self.assert_qmp(result, 'return', {})
> +
> + result = self.vm_a.qmp('migrate', uri='exec:cat>' + fifo)
> + self.assertNotEqual(self.vm_a.event_wait("STOP"), None)
> + self.assertNotEqual(self.vm_b.event_wait("RESUME"), None)
> +
> + s = 0x8000
> + while s < write_size:
> + self.vm_b.hmp_qemu_io('drive0', 'write %d %d' % (s, chunk))
> + s += 0x10000
> +
> + result = self.vm_b.qmp('query-block');
> + while len(result['return'][0]['dirty-bitmaps']) > 1:
> + time.sleep(2)
> + result = self.vm_b.qmp('query-block');
> +
> + result = self.vm_b.qmp('x-debug-block-dirty-bitmap-sha256',
> + node='drive0', name='bitmap')
> +
> + self.assert_qmp(result, 'return/sha256', sha256);
> +
Reviewed-by: Fam Zheng <address@hidden>
- Re: [Qemu-devel] [PATCH v9 04/13] dirty-bitmap: add locked state, (continued)
- [Qemu-devel] [PATCH v9 03/13] block/dirty-bitmap: add _locked version of bdrv_reclaim_dirty_bitmap, Vladimir Sementsov-Ogievskiy, 2017/12/20
- [Qemu-devel] [PATCH v9 09/13] migration: add is_active_iterate handler, Vladimir Sementsov-Ogievskiy, 2017/12/20
- [Qemu-devel] [PATCH v9 05/13] migration: introduce postcopy-only pending, Vladimir Sementsov-Ogievskiy, 2017/12/20
- [Qemu-devel] [PATCH v9 12/13] iotests: add dirty bitmap migration test, Vladimir Sementsov-Ogievskiy, 2017/12/20
- [Qemu-devel] [PATCH v9 13/13] iotests: add dirty bitmap postcopy test, Vladimir Sementsov-Ogievskiy, 2017/12/20
- Re: [Qemu-devel] [PATCH v9 13/13] iotests: add dirty bitmap postcopy test,
Fam Zheng <=
- [Qemu-devel] [PATCH v9 02/13] block/dirty-bitmap: fix locking in bdrv_reclaim_dirty_bitmap, Vladimir Sementsov-Ogievskiy, 2017/12/20
- [Qemu-devel] [PATCH v9 01/13] block/dirty-bitmap: add bdrv_dirty_bitmap_enable_successor(), Vladimir Sementsov-Ogievskiy, 2017/12/20
- [Qemu-devel] [PATCH v9 10/13] migration: add postcopy migration of dirty bitmaps, Vladimir Sementsov-Ogievskiy, 2017/12/20