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iotests: add 298 to test new preallocate filter driver
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Message-Id: <20201021145859.11201-13-vsementsov@virtuozzo.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Max Reitz <mreitz@redhat.com>
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#!/usr/bin/env python3 | ||
# | ||
# Test for preallocate filter | ||
# | ||
# Copyright (c) 2020 Virtuozzo International GmbH. | ||
# | ||
# 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/>. | ||
# | ||
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import os | ||
import iotests | ||
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MiB = 1024 * 1024 | ||
disk = os.path.join(iotests.test_dir, 'disk') | ||
overlay = os.path.join(iotests.test_dir, 'overlay') | ||
refdisk = os.path.join(iotests.test_dir, 'refdisk') | ||
drive_opts = f'node-name=disk,driver={iotests.imgfmt},' \ | ||
f'file.node-name=filter,file.driver=preallocate,' \ | ||
f'file.file.node-name=file,file.file.filename={disk}' | ||
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class TestPreallocateBase(iotests.QMPTestCase): | ||
def setUp(self): | ||
iotests.qemu_img_create('-f', iotests.imgfmt, disk, str(10 * MiB)) | ||
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def tearDown(self): | ||
try: | ||
self.check_small() | ||
check = iotests.qemu_img_check(disk) | ||
self.assertFalse('leaks' in check) | ||
self.assertFalse('corruptions' in check) | ||
self.assertEqual(check['check-errors'], 0) | ||
finally: | ||
os.remove(disk) | ||
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def check_big(self): | ||
self.assertTrue(os.path.getsize(disk) > 100 * MiB) | ||
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def check_small(self): | ||
self.assertTrue(os.path.getsize(disk) < 10 * MiB) | ||
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class TestQemuImg(TestPreallocateBase): | ||
def test_qemu_img(self): | ||
p = iotests.QemuIoInteractive('--image-opts', drive_opts) | ||
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p.cmd('write 0 1M') | ||
p.cmd('flush') | ||
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self.check_big() | ||
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p.close() | ||
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class TestPreallocateFilter(TestPreallocateBase): | ||
def setUp(self): | ||
super().setUp() | ||
self.vm = iotests.VM().add_drive(path=None, opts=drive_opts) | ||
self.vm.launch() | ||
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def tearDown(self): | ||
self.vm.shutdown() | ||
super().tearDown() | ||
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def test_prealloc(self): | ||
self.vm.hmp_qemu_io('drive0', 'write 0 1M') | ||
self.check_big() | ||
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def test_external_snapshot(self): | ||
self.test_prealloc() | ||
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result = self.vm.qmp('blockdev-snapshot-sync', node_name='disk', | ||
snapshot_file=overlay, | ||
snapshot_node_name='overlay') | ||
self.assert_qmp(result, 'return', {}) | ||
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# on reopen to r-o base preallocation should be dropped | ||
self.check_small() | ||
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self.vm.hmp_qemu_io('drive0', 'write 1M 1M') | ||
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result = self.vm.qmp('block-commit', device='overlay') | ||
self.assert_qmp(result, 'return', {}) | ||
self.complete_and_wait() | ||
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# commit of new megabyte should trigger preallocation | ||
self.check_big() | ||
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def test_reopen_opts(self): | ||
result = self.vm.qmp('x-blockdev-reopen', **{ | ||
'node-name': 'disk', | ||
'driver': iotests.imgfmt, | ||
'file': { | ||
'node-name': 'filter', | ||
'driver': 'preallocate', | ||
'prealloc-size': 20 * MiB, | ||
'prealloc-align': 5 * MiB, | ||
'file': { | ||
'node-name': 'file', | ||
'driver': 'file', | ||
'filename': disk | ||
} | ||
} | ||
}) | ||
self.assert_qmp(result, 'return', {}) | ||
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self.vm.hmp_qemu_io('drive0', 'write 0 1M') | ||
self.assertTrue(os.path.getsize(disk) == 25 * MiB) | ||
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class TestTruncate(iotests.QMPTestCase): | ||
def setUp(self): | ||
iotests.qemu_img_create('-f', iotests.imgfmt, disk, str(10 * MiB)) | ||
iotests.qemu_img_create('-f', iotests.imgfmt, refdisk, str(10 * MiB)) | ||
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def tearDown(self): | ||
os.remove(disk) | ||
os.remove(refdisk) | ||
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def do_test(self, prealloc_mode, new_size): | ||
ret = iotests.qemu_io_silent('--image-opts', '-c', 'write 0 10M', '-c', | ||
f'truncate -m {prealloc_mode} {new_size}', | ||
drive_opts) | ||
self.assertEqual(ret, 0) | ||
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ret = iotests.qemu_io_silent('-f', iotests.imgfmt, '-c', 'write 0 10M', | ||
'-c', | ||
f'truncate -m {prealloc_mode} {new_size}', | ||
refdisk) | ||
self.assertEqual(ret, 0) | ||
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stat = os.stat(disk) | ||
refstat = os.stat(refdisk) | ||
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# Probably we'll want preallocate filter to keep align to cluster when | ||
# shrink preallocation, so, ignore small differece | ||
self.assertLess(abs(stat.st_size - refstat.st_size), 64 * 1024) | ||
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# Preallocate filter may leak some internal clusters (for example, if | ||
# guest write far over EOF, skipping some clusters - they will remain | ||
# fallocated, preallocate filter don't care about such leaks, it drops | ||
# only trailing preallocation. | ||
self.assertLess(abs(stat.st_blocks - refstat.st_blocks) * 512, | ||
1024 * 1024) | ||
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def test_real_shrink(self): | ||
self.do_test('off', '5M') | ||
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def test_truncate_inside_preallocated_area__falloc(self): | ||
self.do_test('falloc', '50M') | ||
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def test_truncate_inside_preallocated_area__metadata(self): | ||
self.do_test('metadata', '50M') | ||
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def test_truncate_inside_preallocated_area__full(self): | ||
self.do_test('full', '50M') | ||
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def test_truncate_inside_preallocated_area__off(self): | ||
self.do_test('off', '50M') | ||
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def test_truncate_over_preallocated_area__falloc(self): | ||
self.do_test('falloc', '150M') | ||
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def test_truncate_over_preallocated_area__metadata(self): | ||
self.do_test('metadata', '150M') | ||
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def test_truncate_over_preallocated_area__full(self): | ||
self.do_test('full', '150M') | ||
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def test_truncate_over_preallocated_area__off(self): | ||
self.do_test('off', '150M') | ||
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if __name__ == '__main__': | ||
iotests.main(supported_fmts=['qcow2'], required_fmts=['preallocate']) |
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............. | ||
---------------------------------------------------------------------- | ||
Ran 13 tests | ||
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OK |
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@@ -307,6 +307,7 @@ | |
295 rw | ||
296 rw | ||
297 meta | ||
298 | ||
299 auto quick | ||
300 migration | ||
301 backing quick | ||
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