diff options
Diffstat (limited to 'tests')
| -rw-r--r-- | tests/qemu-iotests/298 | 186 | ||||
| -rw-r--r-- | tests/qemu-iotests/298.out | 5 | ||||
| -rw-r--r-- | tests/qemu-iotests/group | 1 |
3 files changed, 192 insertions, 0 deletions
diff --git a/tests/qemu-iotests/298 b/tests/qemu-iotests/298 new file mode 100644 index 0000000000..d535946b5f --- /dev/null +++ b/tests/qemu-iotests/298 @@ -0,0 +1,186 @@ +#!/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/>. +# + +import os +import iotests + +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}' + + +class TestPreallocateBase(iotests.QMPTestCase): + def setUp(self): + iotests.qemu_img_create('-f', iotests.imgfmt, disk, str(10 * MiB)) + + 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) + + def check_big(self): + self.assertTrue(os.path.getsize(disk) > 100 * MiB) + + def check_small(self): + self.assertTrue(os.path.getsize(disk) < 10 * MiB) + + +class TestQemuImg(TestPreallocateBase): + def test_qemu_img(self): + p = iotests.QemuIoInteractive('--image-opts', drive_opts) + + p.cmd('write 0 1M') + p.cmd('flush') + + self.check_big() + + p.close() + + +class TestPreallocateFilter(TestPreallocateBase): + def setUp(self): + super().setUp() + self.vm = iotests.VM().add_drive(path=None, opts=drive_opts) + self.vm.launch() + + def tearDown(self): + self.vm.shutdown() + super().tearDown() + + def test_prealloc(self): + self.vm.hmp_qemu_io('drive0', 'write 0 1M') + self.check_big() + + def test_external_snapshot(self): + self.test_prealloc() + + result = self.vm.qmp('blockdev-snapshot-sync', node_name='disk', + snapshot_file=overlay, + snapshot_node_name='overlay') + self.assert_qmp(result, 'return', {}) + + # on reopen to r-o base preallocation should be dropped + self.check_small() + + self.vm.hmp_qemu_io('drive0', 'write 1M 1M') + + result = self.vm.qmp('block-commit', device='overlay') + self.assert_qmp(result, 'return', {}) + self.complete_and_wait() + + # commit of new megabyte should trigger preallocation + self.check_big() + + 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', {}) + + self.vm.hmp_qemu_io('drive0', 'write 0 1M') + self.assertTrue(os.path.getsize(disk) == 25 * MiB) + + +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)) + + def tearDown(self): + os.remove(disk) + os.remove(refdisk) + + 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) + + 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) + + stat = os.stat(disk) + refstat = os.stat(refdisk) + + # 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) + + # 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) + + def test_real_shrink(self): + self.do_test('off', '5M') + + def test_truncate_inside_preallocated_area__falloc(self): + self.do_test('falloc', '50M') + + def test_truncate_inside_preallocated_area__metadata(self): + self.do_test('metadata', '50M') + + def test_truncate_inside_preallocated_area__full(self): + self.do_test('full', '50M') + + def test_truncate_inside_preallocated_area__off(self): + self.do_test('off', '50M') + + def test_truncate_over_preallocated_area__falloc(self): + self.do_test('falloc', '150M') + + def test_truncate_over_preallocated_area__metadata(self): + self.do_test('metadata', '150M') + + def test_truncate_over_preallocated_area__full(self): + self.do_test('full', '150M') + + def test_truncate_over_preallocated_area__off(self): + self.do_test('off', '150M') + + +if __name__ == '__main__': + iotests.main(supported_fmts=['qcow2'], required_fmts=['preallocate']) diff --git a/tests/qemu-iotests/298.out b/tests/qemu-iotests/298.out new file mode 100644 index 0000000000..fa16b5ccef --- /dev/null +++ b/tests/qemu-iotests/298.out @@ -0,0 +1,5 @@ +............. +---------------------------------------------------------------------- +Ran 13 tests + +OK diff --git a/tests/qemu-iotests/group b/tests/qemu-iotests/group index 9a8394b4cd..614d58369e 100644 --- a/tests/qemu-iotests/group +++ b/tests/qemu-iotests/group @@ -307,6 +307,7 @@ 295 rw 296 rw 297 meta +298 299 auto quick 300 migration 301 backing quick |