#!/usr/bin/env python3 # group: rw auto # # Tests for image block commit. # # Copyright (C) 2012 IBM, Corp. # Copyright (C) 2012 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 . # # Test for live block commit # Derived from Image Streaming Test 030 import time import os import iotests from iotests import qemu_img, qemu_io import struct import errno backing_img = os.path.join(iotests.test_dir, 'backing.img') mid_img = os.path.join(iotests.test_dir, 'mid.img') test_img = os.path.join(iotests.test_dir, 'test.img') class ImageCommitTestCase(iotests.QMPTestCase): '''Abstract base class for image commit test cases''' def wait_for_complete(self, need_ready=False): completed = False ready = False while not completed: for event in self.vm.get_qmp_events(wait=True): if event['event'] == 'BLOCK_JOB_COMPLETED': self.assert_qmp_absent(event, 'data/error') self.assert_qmp(event, 'data/type', 'commit') self.assert_qmp(event, 'data/device', 'drive0') self.assert_qmp(event, 'data/offset', event['data']['len']) if need_ready: self.assertTrue(ready, "Expecting BLOCK_JOB_COMPLETED event") completed = True elif event['event'] == 'BLOCK_JOB_READY': ready = True self.assert_qmp(event, 'data/type', 'commit') self.assert_qmp(event, 'data/device', 'drive0') self.vm.qmp('block-job-complete', device='drive0') self.assert_no_active_block_jobs() self.vm.shutdown() def run_commit_test(self, top, base, need_ready=False, node_names=False): self.assert_no_active_block_jobs() if node_names: result = self.vm.qmp('block-commit', device='drive0', top_node=top, base_node=base) else: result = self.vm.qmp('block-commit', device='drive0', top=top, base=base) self.assert_qmp(result, 'return', {}) self.wait_for_complete(need_ready) def run_default_commit_test(self): self.assert_no_active_block_jobs() result = self.vm.qmp('block-commit', device='drive0') self.assert_qmp(result, 'return', {}) self.wait_for_complete() class TestSingleDrive(ImageCommitTestCase): # Need some space after the copied data so that throttling is effective in # tests that use it rather than just completing the job immediately image_len = 2 * 1024 * 1024 test_len = 1 * 1024 * 256 def setUp(self): iotests.create_image(backing_img, self.image_len) qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, '-F', 'raw', mid_img) qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % mid_img, '-F', iotests.imgfmt, test_img) qemu_io('-f', 'raw', '-c', 'write -P 0xab 0 524288', backing_img) qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0xef 524288 524288', mid_img) self.vm = iotests.VM().add_drive(test_img, "node-name=top,backing.node-name=mid,backing.backing.node-name=base", interface="none") self.vm.add_device('virtio-scsi') self.vm.add_device("scsi-hd,id=scsi0,drive=drive0") self.vm.launch() def tearDown(self): self.vm.shutdown() os.remove(test_img) os.remove(mid_img) os.remove(backing_img) def test_commit(self): self.run_commit_test(mid_img, backing_img) self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xab 0 524288', backing_img).find("verification failed")) self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xef 524288 524288', backing_img).find("verification failed")) def test_commit_node(self): self.run_commit_test("mid", "base", node_names=True) self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xab 0 524288', backing_img).find("verification failed")) self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xef 524288 524288', backing_img).find("verification failed")) @iotests.skip_if_unsupported(['throttle']) def test_commit_with_filter_and_quit(self): result = self.vm.qmp('object-add', qom_type='throttle-group', id='tg') self.assert_qmp(result, 'return', {}) # Add a filter outside of the backing chain result = self.vm.qmp('blockdev-add', driver='throttle', node_name='filter', throttle_group='tg', file='mid') self.assert_qmp(result, 'return', {}) result = self.vm.qmp('block-commit', device='drive0') self.assert_qmp(result, 'return', {}) # Quit immediately, thus forcing a simultaneous cancel of the # block job and a bdrv_drain_all() result = self.vm.qmp('quit') self.assert_qmp(result, 'return', {}) # Same as above, but this time we add the filter after starting the job @iotests.skip_if_unsupported(['throttle']) def test_commit_plus_filter_and_quit(self): result = self.vm.qmp('object-add', qom_type='throttle-group', id='tg') self.assert_qmp(result, 'return', {}) result = self.vm.qmp('block-commit', device='drive0') self.assert_qmp(result, 'return', {}) # Add a filter outside of the backing chain result = self.vm.qmp('blockdev-add', driver='throttle', node_name='filter', throttle_group='tg', file='mid') self.assert_qmp(result, 'return', {}) # Quit immediately, thus forcing a simultaneous cancel of the # block job and a bdrv_drain_all() result = self.vm.qmp('quit') self.assert_qmp(result, 'return', {}) def test_device_not_found(self): result = self.vm.qmp('block-commit', device='nonexistent', top='%s' % mid_img) self.assert_qmp(result, 'error/class', 'DeviceNotFound') def test_top_same_base(self): self.assert_no_active_block_jobs() result = self.vm.qmp('block-commit', device='drive0', top='%s' % backing_img, base='%s' % backing_img) self.assert_qmp(result, 'error/class', 'GenericError') self.assert_qmp(result, 'error/desc', "Can't find '%s' in the backing chain" % backing_img) def test_top_invalid(self): self.assert_no_active_block_jobs() result = self.vm.qmp('block-commit', device='drive0', top='badfile', base='%s' % backing_img) self.assert_qmp(result, 'error/class', 'GenericError') self.assert_qmp(result, 'error/desc', 'Top image file badfile not found') def test_base_invalid(self): self.assert_no_active_block_jobs() result = self.vm.qmp('block-commit', device='drive0', top='%s' % mid_img, base='badfile') self.assert_qmp(result, 'error/class', 'GenericError') self.assert_qmp(result, 'error/desc', "Can't find 'badfile' in the backing chain") def test_top_node_invalid(self): self.assert_no_active_block_jobs() result = self.vm.qmp('block-commit', device='drive0', top_node='badfile', base_node='base') self.assert_qmp(result, 'error/class', 'GenericError') self.assert_qmp(result, 'error/desc', "Cannot find device='' nor node-name='badfile'") def test_base_node_invalid(self): self.assert_no_active_block_jobs() result = self.vm.qmp('block-commit', device='drive0', top_node='mid', base_node='badfile') self.assert_qmp(result, 'error/class', 'GenericError') self.assert_qmp(result, 'error/desc', "Cannot find device='' nor node-name='badfile'") def test_top_path_and_node(self): self.assert_no_active_block_jobs() result = self.vm.qmp('block-commit', device='drive0', top_node='mid', base_node='base', top='%s' % mid_img) self.assert_qmp(result, 'error/class', 'GenericError') self.assert_qmp(result, 'error/desc', "'top-node' and 'top' are mutually exclusive") def test_base_path_and_node(self): self.assert_no_active_block_jobs() result = self.vm.qmp('block-commit', device='drive0', top_node='mid', base_node='base', base='%s' % backing_img) self.assert_qmp(result, 'error/class', 'GenericError') self.assert_qmp(result, 'error/desc', "'base-node' and 'base' are mutually exclusive") def test_top_is_active(self): self.run_commit_test(test_img, backing_img, need_ready=True) self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xab 0 524288', backing_img).find("verification failed")) self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xef 524288 524288', backing_img).find("verification failed")) def test_top_is_default_active(self): self.run_default_commit_test() self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xab 0 524288', backing_img).find("verification failed")) self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xef 524288 524288', backing_img).find("verification failed")) def test_top_and_base_reversed(self): self.assert_no_active_block_jobs() result = self.vm.qmp('block-commit', device='drive0', top='%s' % backing_img, base='%s' % mid_img) self.assert_qmp(result, 'error/class', 'GenericError') self.assert_qmp(result, 'error/desc', "Can't find '%s' in the backing chain" % mid_img) def test_top_and_base_node_reversed(self): self.assert_no_active_block_jobs() result = self.vm.qmp('block-commit', device='drive0', top_node='base', base_node='top') self.assert_qmp(result, 'error/class', 'GenericError') self.assert_qmp(result, 'error/desc', "'top' is not in this backing file chain") def test_top_node_in_wrong_chain(self): self.assert_no_active_block_jobs() result = self.vm.qmp('blockdev-add', driver='null-co', node_name='null') self.assert_qmp(result, 'return', {}) result = self.vm.qmp('block-commit', device='drive0', top_node='null', base_node='base') self.assert_qmp(result, 'error/class', 'GenericError') self.assert_qmp(result, 'error/desc', "'null' is not in this backing file chain") # When the job is running on a BB that is automatically deleted on hot # unplug, the job is cancelled when the device disappears def test_hot_unplug(self): if self.image_len == 0: return self.assert_no_active_block_jobs() result = self.vm.qmp('block-commit', device='drive0', top=mid_img, base=backing_img, speed=(self.image_len // 4)) self.assert_qmp(result, 'return', {}) result = self.vm.qmp('device_del', id='scsi0') self.assert_qmp(result, 'return', {}) cancelled = False deleted = False while not cancelled or not deleted: for event in self.vm.get_qmp_events(wait=True): if event['event'] == 'DEVICE_DELETED': self.assert_qmp(event, 'data/device', 'scsi0') deleted = True elif event['event'] == 'BLOCK_JOB_CANCELLED': self.assert_qmp(event, 'data/device', 'drive0') cancelled = True elif event['event'] == 'JOB_STATUS_CHANGE': self.assert_qmp(event, 'data/id', 'drive0') else: self.fail("Unexpected event %s" % (event['event'])) self.assert_no_active_block_jobs() # Tests that the insertion of the commit_top filter node doesn't make a # difference to query-blockstat def test_implicit_node(self): if self.image_len == 0: return self.assert_no_active_block_jobs() result = self.vm.qmp('block-commit', device='drive0', top=mid_img, base=backing_img, speed=(self.image_len // 4)) self.assert_qmp(result, 'return', {}) result = self.vm.qmp('query-block') self.assert_qmp(result, 'return[0]/inserted/file', test_img) self.assert_qmp(result, 'return[0]/inserted/drv', iotests.imgfmt) self.assert_qmp(result, 'return[0]/inserted/backing_file', mid_img) self.assert_qmp(result, 'return[0]/inserted/backing_file_depth', 2) self.assert_qmp(result, 'return[0]/inserted/image/filename', test_img) self.assert_qmp(result, 'return[0]/inserted/image/backing-image/filename', mid_img) self.assert_qmp(result, 'return[0]/inserted/image/backing-image/backing-image/filename', backing_img) result = self.vm.qmp('query-blockstats') self.assert_qmp(result, 'return[0]/node-name', 'top') self.assert_qmp(result, 'return[0]/backing/node-name', 'mid') self.assert_qmp(result, 'return[0]/backing/backing/node-name', 'base') self.cancel_and_wait() self.assert_no_active_block_jobs() class TestRelativePaths(ImageCommitTestCase): image_len = 1 * 1024 * 1024 test_len = 1 * 1024 * 256 dir1 = "dir1" dir2 = "dir2/" dir3 = "dir2/dir3/" test_img = os.path.join(iotests.test_dir, dir3, 'test.img') mid_img = "../mid.img" backing_img = "../dir1/backing.img" backing_img_abs = os.path.join(iotests.test_dir, dir1, 'backing.img') mid_img_abs = os.path.join(iotests.test_dir, dir2, 'mid.img') def setUp(self): try: os.mkdir(os.path.join(iotests.test_dir, self.dir1)) os.mkdir(os.path.join(iotests.test_dir, self.dir2)) os.mkdir(os.path.join(iotests.test_dir, self.dir3)) except OSError as exception: if exception.errno != errno.EEXIST: raise iotests.create_image(self.backing_img_abs, TestRelativePaths.image_len) qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % self.backing_img_abs, '-F', 'raw', self.mid_img_abs) qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % self.mid_img_abs, '-F', iotests.imgfmt, self.test_img) qemu_img('rebase', '-u', '-b', self.backing_img, '-F', 'raw', self.mid_img_abs) qemu_img('rebase', '-u', '-b', self.mid_img, '-F', iotests.imgfmt, self.test_img) qemu_io('-f', 'raw', '-c', 'write -P 0xab 0 524288', self.backing_img_abs) qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0xef 524288 524288', self.mid_img_abs) self.vm = iotests.VM().add_drive(self.test_img) self.vm.launch() def tearDown(self): self.vm.shutdown() os.remove(self.test_img) os.remove(self.mid_img_abs) os.remove(self.backing_img_abs) try: os.rmdir(os.path.join(iotests.test_dir, self.dir1)) os.rmdir(os.path.join(iotests.test_dir, self.dir3)) os.rmdir(os.path.join(iotests.test_dir, self.dir2)) except OSError as exception: if exception.errno != errno.EEXIST and exception.errno != errno.ENOTEMPTY: raise def test_commit(self): self.run_commit_test(self.mid_img, self.backing_img) self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xab 0 524288', self.backing_img_abs).find("verification failed")) self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xef 524288 524288', self.backing_img_abs).find("verification failed")) def test_device_not_found(self): result = self.vm.qmp('block-commit', device='nonexistent', top='%s' % self.mid_img) self.assert_qmp(result, 'error/class', 'DeviceNotFound') def test_top_same_base(self): self.assert_no_active_block_jobs() result = self.vm.qmp('block-commit', device='drive0', top='%s' % self.mid_img, base='%s' % self.mid_img) self.assert_qmp(result, 'error/class', 'GenericError') self.assert_qmp(result, 'error/desc', "Can't find '%s' in the backing chain" % self.mid_img) def test_top_invalid(self): self.assert_no_active_block_jobs() result = self.vm.qmp('block-commit', device='drive0', top='badfile', base='%s' % self.backing_img) self.assert_qmp(result, 'error/class', 'GenericError') self.assert_qmp(result, 'error/desc', 'Top image file badfile not found') def test_base_invalid(self): self.assert_no_active_block_jobs() result = self.vm.qmp('block-commit', device='drive0', top='%s' % self.mid_img, base='badfile') self.assert_qmp(result, 'error/class', 'GenericError') self.assert_qmp(result, 'error/desc', "Can't find 'badfile' in the backing chain") def test_top_is_active(self): self.run_commit_test(self.test_img, self.backing_img) self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xab 0 524288', self.backing_img_abs).find("verification failed")) self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xef 524288 524288', self.backing_img_abs).find("verification failed")) def test_top_and_base_reversed(self): self.assert_no_active_block_jobs() result = self.vm.qmp('block-commit', device='drive0', top='%s' % self.backing_img, base='%s' % self.mid_img) self.assert_qmp(result, 'error/class', 'GenericError') self.assert_qmp(result, 'error/desc', "Can't find '%s' in the backing chain" % self.mid_img) class TestSetSpeed(ImageCommitTestCase): image_len = 80 * 1024 * 1024 # MB def setUp(self): qemu_img('create', backing_img, str(TestSetSpeed.image_len)) qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, '-F', 'raw', mid_img) qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % mid_img, '-F', iotests.imgfmt, test_img) qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0x1 0 512', test_img) qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0xef 524288 524288', mid_img) self.vm = iotests.VM().add_drive('blkdebug::' + test_img) self.vm.launch() def tearDown(self): self.vm.shutdown() os.remove(test_img) os.remove(mid_img) os.remove(backing_img) def test_set_speed(self): self.assert_no_active_block_jobs() self.vm.pause_drive('drive0') result = self.vm.qmp('block-commit', device='drive0', top=mid_img, speed=1024 * 1024) self.assert_qmp(result, 'return', {}) # Ensure the speed we set was accepted result = self.vm.qmp('query-block-jobs') self.assert_qmp(result, 'return[0]/device', 'drive0') self.assert_qmp(result, 'return[0]/speed', 1024 * 1024) self.cancel_and_wait(resume=True) class TestActiveZeroLengthImage(TestSingleDrive): image_len = 0 class TestReopenOverlay(ImageCommitTestCase): image_len = 1024 * 1024 img0 = os.path.join(iotests.test_dir, '0.img') img1 = os.path.join(iotests.test_dir, '1.img') img2 = os.path.join(iotests.test_dir, '2.img') img3 = os.path.join(iotests.test_dir, '3.img') def setUp(self): iotests.create_image(self.img0, self.image_len) qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % self.img0, '-F', 'raw', self.img1) qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % self.img1, '-F', iotests.imgfmt, self.img2) qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % self.img2, '-F', iotests.imgfmt, self.img3) qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0xab 0 128K', self.img1) self.vm = iotests.VM().add_drive(self.img3) self.vm.launch() def tearDown(self): self.vm.shutdown() os.remove(self.img0) os.remove(self.img1) os.remove(self.img2) os.remove(self.img3) # This tests what happens when the overlay image of the 'top' node # needs to be reopened in read-write mode in order to update the # backing image string. def test_reopen_overlay(self): self.run_commit_test(self.img1, self.img0) class TestErrorHandling(iotests.QMPTestCase): image_len = 2 * 1024 * 1024 def setUp(self): iotests.create_image(backing_img, self.image_len) qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, '-F', 'raw', mid_img) qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % mid_img, '-F', iotests.imgfmt, test_img) qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0x11 0 512k', mid_img) qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0x22 0 512k', test_img) self.vm = iotests.VM() self.vm.launch() self.blkdebug_file = iotests.file_path("blkdebug.conf") def tearDown(self): self.vm.shutdown() os.remove(test_img) os.remove(mid_img) os.remove(backing_img) def blockdev_add(self, **kwargs): result = self.vm.qmp('blockdev-add', **kwargs) self.assert_qmp(result, 'return', {}) def add_block_nodes(self, base_debug=None, mid_debug=None, top_debug=None): self.blockdev_add(node_name='base-file', driver='file', filename=backing_img) self.blockdev_add(node_name='mid-file', driver='file', filename=mid_img) self.blockdev_add(node_name='top-file', driver='file', filename=test_img) if base_debug: self.blockdev_add(node_name='base-dbg', driver='blkdebug', image='base-file', inject_error=base_debug) if mid_debug: self.blockdev_add(node_name='mid-dbg', driver='blkdebug', image='mid-file', inject_error=mid_debug) if top_debug: self.blockdev_add(node_name='top-dbg', driver='blkdebug', image='top-file', inject_error=top_debug) self.blockdev_add(node_name='base-fmt', driver='raw', file=('base-dbg' if base_debug else 'base-file')) self.blockdev_add(node_name='mid-fmt', driver=iotests.imgfmt, file=('mid-dbg' if mid_debug else 'mid-file'), backing='base-fmt') self.blockdev_add(node_name='top-fmt', driver=iotests.imgfmt, file=('top-dbg' if top_debug else 'top-file'), backing='mid-fmt') def run_job(self, expected_events, error_pauses_job=False): match_device = {'data': {'device': 'job0'}} events = [ ('BLOCK_JOB_COMPLETED', match_device), ('BLOCK_JOB_CANCELLED', match_device), ('BLOCK_JOB_ERROR', match_device), ('BLOCK_JOB_READY', match_device), ] completed = False log = [] while not completed: ev = self.vm.events_wait(events, timeout=5.0) if ev['event'] == 'BLOCK_JOB_COMPLETED': completed = True elif ev['event'] == 'BLOCK_JOB_ERROR': if error_pauses_job: result = self.vm.qmp('block-job-resume', device='job0') self.assert_qmp(result, 'return', {}) elif ev['event'] == 'BLOCK_JOB_READY': result = self.vm.qmp('block-job-complete', device='job0') self.assert_qmp(result, 'return', {}) else: self.fail("Unexpected event: %s" % ev) log.append(iotests.filter_qmp_event(ev)) self.maxDiff = None self.assertEqual(expected_events, log) def event_error(self, op, action): return { 'event': 'BLOCK_JOB_ERROR', 'data': {'action': action, 'device': 'job0', 'operation': op}, 'timestamp': {'microseconds': 'USECS', 'seconds': 'SECS'} } def event_ready(self): return { 'event': 'BLOCK_JOB_READY', 'data': {'device': 'job0', 'len': 524288, 'offset': 524288, 'speed': 0, 'type': 'commit'}, 'timestamp': {'microseconds': 'USECS', 'seconds': 'SECS'}, } def event_completed(self, errmsg=None, active=True): max_len = 524288 if active else self.image_len data = { 'device': 'job0', 'len': max_len, 'offset': 0 if errmsg else max_len, 'speed': 0, 'type': 'commit' } if errmsg: data['error'] = errmsg return { 'event': 'BLOCK_JOB_COMPLETED', 'data': data, 'timestamp': {'microseconds': 'USECS', 'seconds': 'SECS'}, } def blkdebug_event(self, event, is_raw=False): if event: return [{ 'event': event, 'sector': 512 if is_raw else 1024, 'once': True, }] return None def prepare_and_start_job(self, on_error, active=True, top_event=None, mid_event=None, base_event=None): top_debug = self.blkdebug_event(top_event) mid_debug = self.blkdebug_event(mid_event) base_debug = self.blkdebug_event(base_event, True) self.add_block_nodes(top_debug=top_debug, mid_debug=mid_debug, base_debug=base_debug) result = self.vm.qmp('block-commit', job_id='job0', device='top-fmt', top_node='top-fmt' if active else 'mid-fmt', base_node='mid-fmt' if active else 'base-fmt', on_error=on_error) self.assert_qmp(result, 'return', {}) def testActiveReadErrorReport(self): self.prepare_and_start_job('report', top_event='read_aio') self.run_job([ self.event_error('read', 'report'), self.event_completed('Input/output error') ]) self.vm.shutdown() self.assertFalse(iotests.compare_images(test_img, mid_img), 'target image matches source after error') def testActiveReadErrorStop(self): self.prepare_and_start_job('stop', top_event='read_aio') self.run_job([ self.event_error('read', 'stop'), self.event_ready(), self.event_completed() ], error_pauses_job=True) self.vm.shutdown() self.assertTrue(iotests.compare_images(test_img, mid_img), 'target image does not match source after commit') def testActiveReadErrorIgnore(self): self.prepare_and_start_job('ignore', top_event='read_aio') self.run_job([ self.event_error('read', 'ignore'), self.event_ready(), self.event_completed() ]) # For commit, 'ignore' actually means retry, so this will succeed self.vm.shutdown() self.assertTrue(iotests.compare_images(test_img, mid_img), 'target image does not match source after commit') def testActiveWriteErrorReport(self): self.prepare_and_start_job('report', mid_event='write_aio') self.run_job([ self.event_error('write', 'report'), self.event_completed('Input/output error') ]) self.vm.shutdown() self.assertFalse(iotests.compare_images(test_img, mid_img), 'target image matches source after error') def testActiveWriteErrorStop(self): self.prepare_and_start_job('stop', mid_event='write_aio') self.run_job([ self.event_error('write', 'stop'), self.event_ready(), self.event_completed() ], error_pauses_job=True) self.vm.shutdown() self.assertTrue(iotests.compare_images(test_img, mid_img), 'target image does not match source after commit') def testActiveWriteErrorIgnore(self): self.prepare_and_start_job('ignore', mid_event='write_aio') self.run_job([ self.event_error('write', 'ignore'), self.event_ready(), self.event_completed() ]) # For commit, 'ignore' actually means retry, so this will succeed self.vm.shutdown() self.assertTrue(iotests.compare_images(test_img, mid_img), 'target image does not match source after commit') def testIntermediateReadErrorReport(self): self.prepare_and_start_job('report', active=False, mid_event='read_aio') self.run_job([ self.event_error('read', 'report'), self.event_completed('Input/output error', active=False) ]) self.vm.shutdown() self.assertFalse(iotests.compare_images(mid_img, backing_img, fmt2='raw'), 'target image matches source after error') def testIntermediateReadErrorStop(self): self.prepare_and_start_job('stop', active=False, mid_event='read_aio') self.run_job([ self.event_error('read', 'stop'), self.event_completed(active=False) ], error_pauses_job=True) self.vm.shutdown() self.assertTrue(iotests.compare_images(mid_img, backing_img, fmt2='raw'), 'target image does not match source after commit') def testIntermediateReadErrorIgnore(self): self.prepare_and_start_job('ignore', active=False, mid_event='read_aio') self.run_job([ self.event_error('read', 'ignore'), self.event_completed(active=False) ]) # For commit, 'ignore' actually means retry, so this will succeed self.vm.shutdown() self.assertTrue(iotests.compare_images(mid_img, backing_img, fmt2='raw'), 'target image does not match source after commit') def testIntermediateWriteErrorReport(self): self.prepare_and_start_job('report', active=False, base_event='write_aio') self.run_job([ self.event_error('write', 'report'), self.event_completed('Input/output error', active=False) ]) self.vm.shutdown() self.assertFalse(iotests.compare_images(mid_img, backing_img, fmt2='raw'), 'target image matches source after error') def testIntermediateWriteErrorStop(self): self.prepare_and_start_job('stop', active=False, base_event='write_aio') self.run_job([ self.event_error('write', 'stop'), self.event_completed(active=False) ], error_pauses_job=True) self.vm.shutdown() self.assertTrue(iotests.compare_images(mid_img, backing_img, fmt2='raw'), 'target image does not match source after commit') def testIntermediateWriteErrorIgnore(self): self.prepare_and_start_job('ignore', active=False, base_event='write_aio') self.run_job([ self.event_error('write', 'ignore'), self.event_completed(active=False) ]) # For commit, 'ignore' actually means retry, so this will succeed self.vm.shutdown() self.assertTrue(iotests.compare_images(mid_img, backing_img, fmt2='raw'), 'target image does not match source after commit') class TestCommitWithFilters(iotests.QMPTestCase): img0 = os.path.join(iotests.test_dir, '0.img') img1 = os.path.join(iotests.test_dir, '1.img') img2 = os.path.join(iotests.test_dir, '2.img') img3 = os.path.join(iotests.test_dir, '3.img') def do_test_io(self, read_or_write): for index, pattern_file in enumerate(self.pattern_files): result = qemu_io('-f', iotests.imgfmt, '-c', f'{read_or_write} -P {index + 1} {index}M 1M', pattern_file) self.assertFalse('Pattern verification failed' in result) @iotests.skip_if_unsupported(['throttle']) def setUp(self): qemu_img('create', '-f', iotests.imgfmt, self.img0, '64M') qemu_img('create', '-f', iotests.imgfmt, self.img1, '64M') qemu_img('create', '-f', iotests.imgfmt, self.img2, '64M') qemu_img('create', '-f', iotests.imgfmt, self.img3, '64M') # Distributions of the patterns in the files; this is checked # by tearDown() and should be changed by the test cases as is # necessary self.pattern_files = [self.img0, self.img1, self.img2, self.img3] self.do_test_io('write') self.vm = iotests.VM().add_device('virtio-scsi,id=vio-scsi') self.vm.launch() result = self.vm.qmp('object-add', qom_type='throttle-group', id='tg') self.assert_qmp(result, 'return', {}) result = self.vm.qmp('blockdev-add', **{ 'node-name': 'top-filter', 'driver': 'throttle', 'throttle-group': 'tg', 'file': { 'node-name': 'cow-3', 'driver': iotests.imgfmt, 'file': { 'driver': 'file', 'filename': self.img3 }, 'backing': { 'node-name': 'cow-2', 'driver': iotests.imgfmt, 'file': { 'driver': 'file', 'filename': self.img2 }, 'backing': { 'node-name': 'cow-1', 'driver': iotests.imgfmt, 'file': { 'driver': 'file', 'filename': self.img1 }, 'backing': { 'node-name': 'bottom-filter', 'driver': 'throttle', 'throttle-group': 'tg', 'file': { 'node-name': 'cow-0', 'driver': iotests.imgfmt, 'file': { 'driver': 'file', 'filename': self.img0 } } } } } } }) self.assert_qmp(result, 'return', {}) def tearDown(self): self.vm.shutdown() self.do_test_io('read') os.remove(self.img3) os.remove(self.img2) os.remove(self.img1) os.remove(self.img0) # Filters make for funny filenames, so we cannot just use # self.imgX to get them def get_filename(self, node): return self.vm.node_info(node)['image']['filename'] def test_filterless_commit(self): result = self.vm.qmp('block-commit', job_id='commit', device='top-filter', top_node='cow-2', base_node='cow-1') self.assert_qmp(result, 'return', {}) self.wait_until_completed(drive='commit') self.assertIsNotNone(self.vm.node_info('cow-3')) self.assertIsNone(self.vm.node_info('cow-2')) self.assertIsNotNone(self.vm.node_info('cow-1')) # 2 has been comitted into 1 self.pattern_files[2] = self.img1 def test_commit_through_filter(self): result = self.vm.qmp('block-commit', job_id='commit', device='top-filter', top_node='cow-1', base_node='cow-0') self.assert_qmp(result, 'return', {}) self.wait_until_completed(drive='commit') self.assertIsNotNone(self.vm.node_info('cow-2')) self.assertIsNone(self.vm.node_info('cow-1')) self.assertIsNone(self.vm.node_info('bottom-filter')) self.assertIsNotNone(self.vm.node_info('cow-0')) # 1 has been comitted into 0 self.pattern_files[1] = self.img0 def test_filtered_active_commit_with_filter(self): # Add a device, so the commit job finds a parent it can change # to point to the base node (so we can test that top-filter is # dropped from the graph) result = self.vm.qmp('device_add', id='drv0', driver='scsi-hd', bus='vio-scsi.0', drive='top-filter') self.assert_qmp(result, 'return', {}) # Try to release our reference to top-filter; that should not # work because drv0 uses it result = self.vm.qmp('blockdev-del', node_name='top-filter') self.assert_qmp(result, 'error/class', 'GenericError') self.assert_qmp(result, 'error/desc', 'Node top-filter is in use') result = self.vm.qmp('block-commit', job_id='commit', device='top-filter', base_node='cow-2') self.assert_qmp(result, 'return', {}) self.complete_and_wait(drive='commit') # Try to release our reference to top-filter again result = self.vm.qmp('blockdev-del', node_name='top-filter') self.assert_qmp(result, 'return', {}) self.assertIsNone(self.vm.node_info('top-filter')) self.assertIsNone(self.vm.node_info('cow-3')) self.assertIsNotNone(self.vm.node_info('cow-2')) # Check that drv0 is now connected to cow-2 blockdevs = self.vm.qmp('query-block')['return'] drv0 = next(dev for dev in blockdevs if dev['qdev'] == 'drv0') self.assertEqual(drv0['inserted']['node-name'], 'cow-2') # 3 has been comitted into 2 self.pattern_files[3] = self.img2 def test_filtered_active_commit_without_filter(self): result = self.vm.qmp('block-commit', job_id='commit', device='top-filter', top_node='cow-3', base_node='cow-2') self.assert_qmp(result, 'return', {}) self.complete_and_wait(drive='commit') self.assertIsNotNone(self.vm.node_info('top-filter')) self.assertIsNone(self.vm.node_info('cow-3')) self.assertIsNotNone(self.vm.node_info('cow-2')) # 3 has been comitted into 2 self.pattern_files[3] = self.img2 class TestCommitWithOverriddenBacking(iotests.QMPTestCase): img_base_a = os.path.join(iotests.test_dir, 'base_a.img') img_base_b = os.path.join(iotests.test_dir, 'base_b.img') img_top = os.path.join(iotests.test_dir, 'top.img') def setUp(self): qemu_img('create', '-f', iotests.imgfmt, self.img_base_a, '1M') qemu_img('create', '-f', iotests.imgfmt, self.img_base_b, '1M') qemu_img('create', '-f', iotests.imgfmt, '-b', self.img_base_a, '-F', iotests.imgfmt, self.img_top) self.vm = iotests.VM() self.vm.launch() # Use base_b instead of base_a as the backing of top result = self.vm.qmp('blockdev-add', **{ 'node-name': 'top', 'driver': iotests.imgfmt, 'file': { 'driver': 'file', 'filename': self.img_top }, 'backing': { 'node-name': 'base', 'driver': iotests.imgfmt, 'file': { 'driver': 'file', 'filename': self.img_base_b } } }) self.assert_qmp(result, 'return', {}) def tearDown(self): self.vm.shutdown() os.remove(self.img_top) os.remove(self.img_base_a) os.remove(self.img_base_b) def test_commit_to_a(self): # Try committing to base_a (which should fail, as top's # backing image is base_b instead) result = self.vm.qmp('block-commit', job_id='commit', device='top', base=self.img_base_a) self.assert_qmp(result, 'error/class', 'GenericError') def test_commit_to_b(self): # Try committing to base_b (which should work, since that is # actually top's backing image) result = self.vm.qmp('block-commit', job_id='commit', device='top', base=self.img_base_b) self.assert_qmp(result, 'return', {}) self.vm.event_wait('BLOCK_JOB_READY') self.vm.qmp('block-job-complete', device='commit') self.vm.event_wait('BLOCK_JOB_COMPLETED') if __name__ == '__main__': iotests.main(supported_fmts=['qcow2', 'qed'], supported_protocols=['file'])