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Diffstat (limited to 'tests/qemu-iotests/041')
| -rwxr-xr-x | tests/qemu-iotests/041 | 1441 |
1 files changed, 1441 insertions, 0 deletions
diff --git a/tests/qemu-iotests/041 b/tests/qemu-iotests/041 new file mode 100755 index 000000000..db9f5dc54 --- /dev/null +++ b/tests/qemu-iotests/041 @@ -0,0 +1,1441 @@ +#!/usr/bin/env python3 +# group: rw auto backing +# +# Tests for image mirroring. +# +# 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 <http://www.gnu.org/licenses/>. +# + +import time +import os +import re +import json +import iotests +from iotests import qemu_img, qemu_img_pipe, qemu_io + +backing_img = os.path.join(iotests.test_dir, 'backing.img') +target_backing_img = os.path.join(iotests.test_dir, 'target-backing.img') +test_img = os.path.join(iotests.test_dir, 'test.img') +target_img = os.path.join(iotests.test_dir, 'target.img') + +quorum_img1 = os.path.join(iotests.test_dir, 'quorum1.img') +quorum_img2 = os.path.join(iotests.test_dir, 'quorum2.img') +quorum_img3 = os.path.join(iotests.test_dir, 'quorum3.img') +quorum_repair_img = os.path.join(iotests.test_dir, 'quorum_repair.img') +quorum_snapshot_file = os.path.join(iotests.test_dir, 'quorum_snapshot.img') + +nbd_sock_path = os.path.join(iotests.sock_dir, 'nbd.sock') + +class TestSingleDrive(iotests.QMPTestCase): + image_len = 1 * 1024 * 1024 # MB + qmp_cmd = 'drive-mirror' + qmp_target = target_img + + 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', test_img) + self.vm = iotests.VM().add_drive(test_img, "node-name=top,backing.node-name=base") + if iotests.qemu_default_machine == 'pc': + self.vm.add_drive(None, 'media=cdrom', 'ide') + self.vm.launch() + + def tearDown(self): + self.vm.shutdown() + os.remove(test_img) + os.remove(backing_img) + try: + os.remove(target_img) + except OSError: + pass + + def test_complete(self): + self.assert_no_active_block_jobs() + + result = self.vm.qmp(self.qmp_cmd, device='drive0', sync='full', + target=self.qmp_target) + self.assert_qmp(result, 'return', {}) + + self.complete_and_wait() + result = self.vm.qmp('query-block') + self.assert_qmp(result, 'return[0]/inserted/file', target_img) + self.vm.shutdown() + self.assertTrue(iotests.compare_images(test_img, target_img), + 'target image does not match source after mirroring') + + def test_cancel(self): + self.assert_no_active_block_jobs() + + result = self.vm.qmp(self.qmp_cmd, device='drive0', sync='full', + target=self.qmp_target) + self.assert_qmp(result, 'return', {}) + + self.cancel_and_wait(force=True) + result = self.vm.qmp('query-block') + self.assert_qmp(result, 'return[0]/inserted/file', test_img) + + def test_cancel_after_ready(self): + self.assert_no_active_block_jobs() + + result = self.vm.qmp(self.qmp_cmd, device='drive0', sync='full', + target=self.qmp_target) + self.assert_qmp(result, 'return', {}) + + self.wait_ready_and_cancel() + result = self.vm.qmp('query-block') + self.assert_qmp(result, 'return[0]/inserted/file', test_img) + self.vm.shutdown() + self.assertTrue(iotests.compare_images(test_img, target_img), + 'target image does not match source after mirroring') + + def test_pause(self): + self.assert_no_active_block_jobs() + + result = self.vm.qmp(self.qmp_cmd, device='drive0', sync='full', + target=self.qmp_target) + self.assert_qmp(result, 'return', {}) + + self.pause_job('drive0') + + result = self.vm.qmp('query-block-jobs') + offset = self.dictpath(result, 'return[0]/offset') + + time.sleep(0.5) + result = self.vm.qmp('query-block-jobs') + self.assert_qmp(result, 'return[0]/offset', offset) + + result = self.vm.qmp('block-job-resume', device='drive0') + self.assert_qmp(result, 'return', {}) + + self.complete_and_wait() + self.vm.shutdown() + self.assertTrue(iotests.compare_images(test_img, target_img), + 'target image does not match source after mirroring') + + def test_small_buffer(self): + self.assert_no_active_block_jobs() + + # A small buffer is rounded up automatically + result = self.vm.qmp(self.qmp_cmd, device='drive0', sync='full', + buf_size=4096, target=self.qmp_target) + self.assert_qmp(result, 'return', {}) + + self.complete_and_wait() + result = self.vm.qmp('query-block') + self.assert_qmp(result, 'return[0]/inserted/file', target_img) + self.vm.shutdown() + self.assertTrue(iotests.compare_images(test_img, target_img), + 'target image does not match source after mirroring') + + def test_small_buffer2(self): + self.assert_no_active_block_jobs() + + qemu_img('create', '-f', iotests.imgfmt, '-o', 'cluster_size=%d,size=%d' + % (self.image_len, self.image_len), target_img) + result = self.vm.qmp(self.qmp_cmd, device='drive0', sync='full', + buf_size=65536, mode='existing', target=self.qmp_target) + self.assert_qmp(result, 'return', {}) + + self.complete_and_wait() + result = self.vm.qmp('query-block') + self.assert_qmp(result, 'return[0]/inserted/file', target_img) + self.vm.shutdown() + self.assertTrue(iotests.compare_images(test_img, target_img), + 'target image does not match source after mirroring') + + def test_large_cluster(self): + self.assert_no_active_block_jobs() + + qemu_img('create', '-f', iotests.imgfmt, '-o', 'cluster_size=%d,backing_file=%s' + % (self.image_len, backing_img), + '-F', 'raw', target_img) + result = self.vm.qmp(self.qmp_cmd, device='drive0', sync='full', + mode='existing', target=self.qmp_target) + self.assert_qmp(result, 'return', {}) + + self.complete_and_wait() + result = self.vm.qmp('query-block') + self.assert_qmp(result, 'return[0]/inserted/file', target_img) + self.vm.shutdown() + self.assertTrue(iotests.compare_images(test_img, target_img), + 'target image does not match source after mirroring') + + # Tests that the insertion of the mirror_top filter node doesn't make a + # difference to query-block + def test_implicit_node(self): + self.assert_no_active_block_jobs() + + result = self.vm.qmp(self.qmp_cmd, device='drive0', sync='full', + target=self.qmp_target) + 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', backing_img) + self.assert_qmp(result, 'return[0]/inserted/backing_file_depth', 1) + self.assert_qmp(result, 'return[0]/inserted/image/filename', test_img) + self.assert_qmp(result, 'return[0]/inserted/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', 'base') + + self.cancel_and_wait(force=True) + 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', backing_img) + self.assert_qmp(result, 'return[0]/inserted/backing_file_depth', 1) + self.assert_qmp(result, 'return[0]/inserted/image/filename', test_img) + self.assert_qmp(result, 'return[0]/inserted/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', 'base') + + def test_medium_not_found(self): + if iotests.qemu_default_machine != 'pc': + return + + result = self.vm.qmp(self.qmp_cmd, device='ide1-cd0', sync='full', + target=self.qmp_target) + self.assert_qmp(result, 'error/class', 'GenericError') + + def test_image_not_found(self): + result = self.vm.qmp(self.qmp_cmd, device='drive0', sync='full', + mode='existing', target=self.qmp_target) + self.assert_qmp(result, 'error/class', 'GenericError') + + def test_device_not_found(self): + result = self.vm.qmp(self.qmp_cmd, device='nonexistent', sync='full', + target=self.qmp_target) + self.assert_qmp(result, 'error/class', 'GenericError') + +class TestSingleBlockdev(TestSingleDrive): + qmp_cmd = 'blockdev-mirror' + qmp_target = 'node1' + + def setUp(self): + TestSingleDrive.setUp(self) + qemu_img('create', '-f', iotests.imgfmt, + '-o', 'backing_file=%s' % backing_img, '-F', 'raw', target_img) + args = {'driver': iotests.imgfmt, + 'node-name': self.qmp_target, + 'file': { 'filename': target_img, 'driver': 'file' } } + result = self.vm.qmp("blockdev-add", **args) + self.assert_qmp(result, 'return', {}) + + def test_mirror_to_self(self): + result = self.vm.qmp(self.qmp_cmd, job_id='job0', + device=self.qmp_target, sync='full', + target=self.qmp_target) + self.assert_qmp(result, 'error/class', 'GenericError') + + def do_test_resize(self, device, node): + def pre_finalize(): + if device: + result = self.vm.qmp('block_resize', device=device, size=65536) + self.assert_qmp(result, 'error/class', 'GenericError') + + result = self.vm.qmp('block_resize', node_name=node, size=65536) + self.assert_qmp(result, 'error/class', 'GenericError') + + result = self.vm.qmp(self.qmp_cmd, job_id='job0', device='drive0', + sync='full', target=self.qmp_target, + auto_finalize=False, auto_dismiss=False) + self.assert_qmp(result, 'return', {}) + + result = self.vm.run_job('job0', auto_finalize=False, + pre_finalize=pre_finalize) + self.assertEqual(result, None) + + def test_source_resize(self): + self.do_test_resize('drive0', 'top') + + def test_target_resize(self): + self.do_test_resize(None, self.qmp_target) + + def do_test_target_size(self, size): + result = self.vm.qmp('block_resize', node_name=self.qmp_target, + size=size) + self.assert_qmp(result, 'return', {}) + + result = self.vm.qmp(self.qmp_cmd, job_id='job0', + device='drive0', sync='full', auto_dismiss=False, + target=self.qmp_target) + self.assert_qmp(result, 'return', {}) + + result = self.vm.run_job('job0') + self.assertEqual(result, 'Source and target image have different sizes') + + # qed does not support shrinking + @iotests.skip_for_formats(('qed')) + def test_small_target(self): + self.do_test_target_size(self.image_len // 2) + + def test_large_target(self): + self.do_test_target_size(self.image_len * 2) + + test_large_cluster = None + test_image_not_found = None + test_small_buffer2 = None + +class TestSingleDriveZeroLength(TestSingleDrive): + image_len = 0 + test_small_buffer2 = None + test_large_cluster = None + +class TestSingleBlockdevZeroLength(TestSingleBlockdev): + image_len = 0 + test_small_target = None + test_large_target = None + +class TestSingleDriveUnalignedLength(TestSingleDrive): + image_len = 1025 * 1024 + test_small_buffer2 = None + test_large_cluster = None + +class TestSingleBlockdevUnalignedLength(TestSingleBlockdev): + image_len = 1025 * 1024 + +class TestMirrorNoBacking(iotests.QMPTestCase): + image_len = 2 * 1024 * 1024 # MB + + def setUp(self): + iotests.create_image(backing_img, TestMirrorNoBacking.image_len) + qemu_img('create', '-f', iotests.imgfmt, + '-o', 'backing_file=%s' % backing_img, '-F', 'raw', test_img) + self.vm = iotests.VM().add_drive(test_img) + self.vm.launch() + + def tearDown(self): + self.vm.shutdown() + os.remove(test_img) + os.remove(backing_img) + try: + os.remove(target_backing_img) + except: + pass + os.remove(target_img) + + def test_complete(self): + self.assert_no_active_block_jobs() + + qemu_img('create', '-f', iotests.imgfmt, + '-o', 'backing_file=%s' % backing_img, '-F', 'raw', target_img) + result = self.vm.qmp('drive-mirror', device='drive0', sync='full', + mode='existing', target=target_img) + self.assert_qmp(result, 'return', {}) + + self.complete_and_wait() + result = self.vm.qmp('query-block') + self.assert_qmp(result, 'return[0]/inserted/file', target_img) + self.vm.shutdown() + self.assertTrue(iotests.compare_images(test_img, target_img), + 'target image does not match source after mirroring') + + def test_cancel(self): + self.assert_no_active_block_jobs() + + qemu_img('create', '-f', iotests.imgfmt, + '-o', 'backing_file=%s' % backing_img, '-F', 'raw', target_img) + result = self.vm.qmp('drive-mirror', device='drive0', sync='full', + mode='existing', target=target_img) + self.assert_qmp(result, 'return', {}) + + self.wait_ready_and_cancel() + result = self.vm.qmp('query-block') + self.assert_qmp(result, 'return[0]/inserted/file', test_img) + self.vm.shutdown() + self.assertTrue(iotests.compare_images(test_img, target_img), + 'target image does not match source after mirroring') + + def test_large_cluster(self): + self.assert_no_active_block_jobs() + + # qemu-img create fails if the image is not there + qemu_img('create', '-f', iotests.imgfmt, '-o', 'size=%d' + %(TestMirrorNoBacking.image_len), target_backing_img) + qemu_img('create', '-f', iotests.imgfmt, '-o', 'cluster_size=%d,backing_file=%s' + % (TestMirrorNoBacking.image_len, target_backing_img), + '-F', iotests.imgfmt, target_img) + + result = self.vm.qmp('drive-mirror', device='drive0', sync='full', + mode='existing', target=target_img) + self.assert_qmp(result, 'return', {}) + + self.complete_and_wait() + result = self.vm.qmp('query-block') + self.assert_qmp(result, 'return[0]/inserted/file', target_img) + self.vm.shutdown() + self.assertTrue(iotests.compare_images(test_img, target_img), + 'target image does not match source after mirroring') + +class TestMirrorResized(iotests.QMPTestCase): + backing_len = 1 * 1024 * 1024 # MB + image_len = 2 * 1024 * 1024 # MB + + def setUp(self): + iotests.create_image(backing_img, TestMirrorResized.backing_len) + qemu_img('create', '-f', iotests.imgfmt, + '-o', 'backing_file=%s' % backing_img, '-F', 'raw', test_img) + qemu_img('resize', test_img, '2M') + self.vm = iotests.VM().add_drive(test_img) + self.vm.launch() + + def tearDown(self): + self.vm.shutdown() + os.remove(test_img) + os.remove(backing_img) + try: + os.remove(target_img) + except OSError: + pass + + def test_complete_top(self): + self.assert_no_active_block_jobs() + + result = self.vm.qmp('drive-mirror', device='drive0', sync='top', + target=target_img) + self.assert_qmp(result, 'return', {}) + + self.complete_and_wait() + result = self.vm.qmp('query-block') + self.assert_qmp(result, 'return[0]/inserted/file', target_img) + self.vm.shutdown() + self.assertTrue(iotests.compare_images(test_img, target_img), + 'target image does not match source after mirroring') + + def test_complete_full(self): + self.assert_no_active_block_jobs() + + result = self.vm.qmp('drive-mirror', device='drive0', sync='full', + target=target_img) + self.assert_qmp(result, 'return', {}) + + self.complete_and_wait() + result = self.vm.qmp('query-block') + self.assert_qmp(result, 'return[0]/inserted/file', target_img) + self.vm.shutdown() + self.assertTrue(iotests.compare_images(test_img, target_img), + 'target image does not match source after mirroring') + +class TestReadErrors(iotests.QMPTestCase): + image_len = 2 * 1024 * 1024 # MB + + # this should be a multiple of twice the default granularity + # so that we hit this offset first in state 1 + MIRROR_GRANULARITY = 1024 * 1024 + + def create_blkdebug_file(self, name, event, errno): + file = open(name, 'w') + file.write(''' +[inject-error] +state = "1" +event = "%s" +errno = "%d" +immediately = "off" +once = "on" +sector = "%d" + +[set-state] +state = "1" +event = "%s" +new_state = "2" + +[set-state] +state = "2" +event = "%s" +new_state = "1" +''' % (event, errno, self.MIRROR_GRANULARITY // 512, event, event)) + file.close() + + def setUp(self): + self.blkdebug_file = backing_img + ".blkdebug" + iotests.create_image(backing_img, TestReadErrors.image_len) + self.create_blkdebug_file(self.blkdebug_file, "read_aio", 5) + qemu_img('create', '-f', iotests.imgfmt, + '-o', 'backing_file=blkdebug:%s:%s,backing_fmt=raw' + % (self.blkdebug_file, backing_img), + test_img) + # Write something for tests that use sync='top' + qemu_io('-c', 'write %d 512' % (self.MIRROR_GRANULARITY + 65536), + test_img) + self.vm = iotests.VM().add_drive(test_img) + self.vm.launch() + + def tearDown(self): + self.vm.shutdown() + os.remove(test_img) + os.remove(target_img) + os.remove(backing_img) + os.remove(self.blkdebug_file) + + def test_report_read(self): + self.assert_no_active_block_jobs() + + result = self.vm.qmp('drive-mirror', device='drive0', sync='full', + target=target_img) + self.assert_qmp(result, 'return', {}) + + completed = False + error = False + while not completed: + for event in self.vm.get_qmp_events(wait=True): + if event['event'] == 'BLOCK_JOB_ERROR': + self.assert_qmp(event, 'data/device', 'drive0') + self.assert_qmp(event, 'data/operation', 'read') + error = True + elif event['event'] == 'BLOCK_JOB_READY': + self.assertTrue(False, 'job completed unexpectedly') + elif event['event'] == 'BLOCK_JOB_COMPLETED': + self.assertTrue(error, 'job completed unexpectedly') + self.assert_qmp(event, 'data/type', 'mirror') + self.assert_qmp(event, 'data/device', 'drive0') + self.assert_qmp(event, 'data/error', 'Input/output error') + completed = True + elif event['event'] == 'JOB_STATUS_CHANGE': + self.assert_qmp(event, 'data/id', 'drive0') + + self.assert_no_active_block_jobs() + + def test_ignore_read(self): + self.assert_no_active_block_jobs() + + result = self.vm.qmp('drive-mirror', device='drive0', sync='full', + target=target_img, on_source_error='ignore') + self.assert_qmp(result, 'return', {}) + + event = self.vm.get_qmp_event(wait=True) + while event['event'] == 'JOB_STATUS_CHANGE': + self.assert_qmp(event, 'data/id', 'drive0') + event = self.vm.get_qmp_event(wait=True) + + self.assertEqual(event['event'], 'BLOCK_JOB_ERROR') + self.assert_qmp(event, 'data/device', 'drive0') + self.assert_qmp(event, 'data/operation', 'read') + result = self.vm.qmp('query-block-jobs') + self.assert_qmp(result, 'return[0]/paused', False) + self.complete_and_wait() + + def test_large_cluster(self): + self.assert_no_active_block_jobs() + + # Test COW into the target image. The first half of the + # cluster at MIRROR_GRANULARITY has to be copied from + # backing_img, even though sync='top'. + qemu_img('create', '-f', iotests.imgfmt, + '-ocluster_size=131072,backing_file=%s' %(backing_img), + '-F', 'raw', target_img) + result = self.vm.qmp('drive-mirror', device='drive0', sync='top', + on_source_error='ignore', + mode='existing', target=target_img) + self.assert_qmp(result, 'return', {}) + + event = self.vm.get_qmp_event(wait=True) + while event['event'] == 'JOB_STATUS_CHANGE': + self.assert_qmp(event, 'data/id', 'drive0') + event = self.vm.get_qmp_event(wait=True) + + self.assertEqual(event['event'], 'BLOCK_JOB_ERROR') + self.assert_qmp(event, 'data/device', 'drive0') + self.assert_qmp(event, 'data/operation', 'read') + result = self.vm.qmp('query-block-jobs') + self.assert_qmp(result, 'return[0]/paused', False) + self.complete_and_wait() + self.vm.shutdown() + + # Detach blkdebug to compare images successfully + qemu_img('rebase', '-f', iotests.imgfmt, '-u', '-b', backing_img, + '-F', 'raw', test_img) + self.assertTrue(iotests.compare_images(test_img, target_img), + 'target image does not match source after mirroring') + + def test_stop_read(self): + self.assert_no_active_block_jobs() + + result = self.vm.qmp('drive-mirror', device='drive0', sync='full', + target=target_img, on_source_error='stop') + self.assert_qmp(result, 'return', {}) + + error = False + ready = False + while not ready: + for event in self.vm.get_qmp_events(wait=True): + if event['event'] == 'BLOCK_JOB_ERROR': + self.assert_qmp(event, 'data/device', 'drive0') + self.assert_qmp(event, 'data/operation', 'read') + + result = self.vm.qmp('query-block-jobs') + self.assert_qmp(result, 'return[0]/paused', True) + self.assert_qmp(result, 'return[0]/io-status', 'failed') + + result = self.vm.qmp('block-job-resume', device='drive0') + self.assert_qmp(result, 'return', {}) + error = True + elif event['event'] == 'BLOCK_JOB_READY': + self.assertTrue(error, 'job completed unexpectedly') + self.assert_qmp(event, 'data/device', 'drive0') + ready = True + + result = self.vm.qmp('query-block-jobs') + self.assert_qmp(result, 'return[0]/paused', False) + self.assert_qmp(result, 'return[0]/io-status', 'ok') + + self.complete_and_wait(wait_ready=False) + self.assert_no_active_block_jobs() + +class TestWriteErrors(iotests.QMPTestCase): + image_len = 2 * 1024 * 1024 # MB + + # this should be a multiple of twice the default granularity + # so that we hit this offset first in state 1 + MIRROR_GRANULARITY = 1024 * 1024 + + def create_blkdebug_file(self, name, event, errno): + file = open(name, 'w') + file.write(''' +[inject-error] +state = "1" +event = "%s" +errno = "%d" +immediately = "off" +once = "on" +sector = "%d" + +[set-state] +state = "1" +event = "%s" +new_state = "2" + +[set-state] +state = "2" +event = "%s" +new_state = "1" +''' % (event, errno, self.MIRROR_GRANULARITY // 512, event, event)) + file.close() + + def setUp(self): + self.blkdebug_file = target_img + ".blkdebug" + iotests.create_image(backing_img, TestWriteErrors.image_len) + self.create_blkdebug_file(self.blkdebug_file, "write_aio", 5) + qemu_img('create', '-f', iotests.imgfmt, + '-obacking_file=%s' %(backing_img), '-F', 'raw', test_img) + self.vm = iotests.VM().add_drive(test_img) + self.target_img = 'blkdebug:%s:%s' % (self.blkdebug_file, target_img) + qemu_img('create', '-f', iotests.imgfmt, '-osize=%d' %(TestWriteErrors.image_len), target_img) + self.vm.launch() + + def tearDown(self): + self.vm.shutdown() + os.remove(test_img) + os.remove(target_img) + os.remove(backing_img) + os.remove(self.blkdebug_file) + + def test_report_write(self): + self.assert_no_active_block_jobs() + + result = self.vm.qmp('drive-mirror', device='drive0', sync='full', + mode='existing', target=self.target_img) + self.assert_qmp(result, 'return', {}) + + completed = False + error = False + while not completed: + for event in self.vm.get_qmp_events(wait=True): + if event['event'] == 'BLOCK_JOB_ERROR': + self.assert_qmp(event, 'data/device', 'drive0') + self.assert_qmp(event, 'data/operation', 'write') + error = True + elif event['event'] == 'BLOCK_JOB_READY': + self.assertTrue(False, 'job completed unexpectedly') + elif event['event'] == 'BLOCK_JOB_COMPLETED': + self.assertTrue(error, 'job completed unexpectedly') + self.assert_qmp(event, 'data/type', 'mirror') + self.assert_qmp(event, 'data/device', 'drive0') + self.assert_qmp(event, 'data/error', 'Input/output error') + completed = True + + self.assert_no_active_block_jobs() + + def test_ignore_write(self): + self.assert_no_active_block_jobs() + + result = self.vm.qmp('drive-mirror', device='drive0', sync='full', + mode='existing', target=self.target_img, + on_target_error='ignore') + self.assert_qmp(result, 'return', {}) + + event = self.vm.event_wait(name='BLOCK_JOB_ERROR') + self.assertEqual(event['event'], 'BLOCK_JOB_ERROR') + self.assert_qmp(event, 'data/device', 'drive0') + self.assert_qmp(event, 'data/operation', 'write') + result = self.vm.qmp('query-block-jobs') + self.assert_qmp(result, 'return[0]/paused', False) + self.complete_and_wait() + + def test_stop_write(self): + self.assert_no_active_block_jobs() + + result = self.vm.qmp('drive-mirror', device='drive0', sync='full', + mode='existing', target=self.target_img, + on_target_error='stop') + self.assert_qmp(result, 'return', {}) + + error = False + ready = False + while not ready: + for event in self.vm.get_qmp_events(wait=True): + if event['event'] == 'BLOCK_JOB_ERROR': + self.assert_qmp(event, 'data/device', 'drive0') + self.assert_qmp(event, 'data/operation', 'write') + + result = self.vm.qmp('query-block-jobs') + self.assert_qmp(result, 'return[0]/paused', True) + self.assert_qmp(result, 'return[0]/io-status', 'failed') + + result = self.vm.qmp('block-job-resume', device='drive0') + self.assert_qmp(result, 'return', {}) + + result = self.vm.qmp('query-block-jobs') + self.assert_qmp(result, 'return[0]/paused', False) + self.assert_qmp(result, 'return[0]/io-status', 'ok') + error = True + elif event['event'] == 'BLOCK_JOB_READY': + self.assertTrue(error, 'job completed unexpectedly') + self.assert_qmp(event, 'data/device', 'drive0') + ready = True + + self.complete_and_wait(wait_ready=False) + self.assert_no_active_block_jobs() + +class TestSetSpeed(iotests.QMPTestCase): + 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', test_img) + self.vm = iotests.VM().add_drive(test_img) + self.vm.launch() + + def tearDown(self): + self.vm.shutdown() + os.remove(test_img) + os.remove(backing_img) + os.remove(target_img) + + def test_set_speed(self): + self.assert_no_active_block_jobs() + + result = self.vm.qmp('drive-mirror', device='drive0', sync='full', + target=target_img) + self.assert_qmp(result, 'return', {}) + + # Default speed is 0 + result = self.vm.qmp('query-block-jobs') + self.assert_qmp(result, 'return[0]/device', 'drive0') + self.assert_qmp(result, 'return[0]/speed', 0) + + result = self.vm.qmp('block-job-set-speed', device='drive0', speed=8 * 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', 8 * 1024 * 1024) + + self.wait_ready_and_cancel() + + # Check setting speed in drive-mirror works + result = self.vm.qmp('drive-mirror', device='drive0', sync='full', + target=target_img, speed=4*1024*1024) + self.assert_qmp(result, 'return', {}) + + result = self.vm.qmp('query-block-jobs') + self.assert_qmp(result, 'return[0]/device', 'drive0') + self.assert_qmp(result, 'return[0]/speed', 4 * 1024 * 1024) + + self.wait_ready_and_cancel() + + def test_set_speed_invalid(self): + self.assert_no_active_block_jobs() + + result = self.vm.qmp('drive-mirror', device='drive0', sync='full', + target=target_img, speed=-1) + self.assert_qmp(result, 'error/class', 'GenericError') + + self.assert_no_active_block_jobs() + + result = self.vm.qmp('drive-mirror', device='drive0', sync='full', + target=target_img) + self.assert_qmp(result, 'return', {}) + + result = self.vm.qmp('block-job-set-speed', device='drive0', speed=-1) + self.assert_qmp(result, 'error/class', 'GenericError') + + self.wait_ready_and_cancel() + +class TestUnbackedSource(iotests.QMPTestCase): + image_len = 2 * 1024 * 1024 # MB + + def setUp(self): + qemu_img('create', '-f', iotests.imgfmt, test_img, + str(TestUnbackedSource.image_len)) + self.vm = iotests.VM() + self.vm.launch() + result = self.vm.qmp('blockdev-add', node_name='drive0', + driver=iotests.imgfmt, + file={ + 'driver': 'file', + 'filename': test_img, + }) + self.assert_qmp(result, 'return', {}) + + def tearDown(self): + self.vm.shutdown() + os.remove(test_img) + os.remove(target_img) + + def test_absolute_paths_full(self): + self.assert_no_active_block_jobs() + result = self.vm.qmp('drive-mirror', job_id='drive0', device='drive0', + sync='full', target=target_img, + mode='absolute-paths') + self.assert_qmp(result, 'return', {}) + self.complete_and_wait() + self.assert_no_active_block_jobs() + + def test_absolute_paths_top(self): + self.assert_no_active_block_jobs() + result = self.vm.qmp('drive-mirror', job_id='drive0', device='drive0', + sync='top', target=target_img, + mode='absolute-paths') + self.assert_qmp(result, 'return', {}) + self.complete_and_wait() + self.assert_no_active_block_jobs() + + def test_absolute_paths_none(self): + self.assert_no_active_block_jobs() + result = self.vm.qmp('drive-mirror', job_id='drive0', device='drive0', + sync='none', target=target_img, + mode='absolute-paths') + self.assert_qmp(result, 'return', {}) + self.complete_and_wait() + self.assert_no_active_block_jobs() + + def test_existing_full(self): + qemu_img('create', '-f', iotests.imgfmt, target_img, + str(self.image_len)) + qemu_io('-c', 'write -P 42 0 64k', target_img) + + self.assert_no_active_block_jobs() + result = self.vm.qmp('drive-mirror', job_id='drive0', device='drive0', + sync='full', target=target_img, mode='existing') + self.assert_qmp(result, 'return', {}) + self.complete_and_wait() + self.assert_no_active_block_jobs() + + result = self.vm.qmp('blockdev-del', node_name='drive0') + self.assert_qmp(result, 'return', {}) + + self.assertTrue(iotests.compare_images(test_img, target_img), + 'target image does not match source after mirroring') + + def test_blockdev_full(self): + qemu_img('create', '-f', iotests.imgfmt, target_img, + str(self.image_len)) + qemu_io('-c', 'write -P 42 0 64k', target_img) + + result = self.vm.qmp('blockdev-add', node_name='target', + driver=iotests.imgfmt, + file={ + 'driver': 'file', + 'filename': target_img, + }) + self.assert_qmp(result, 'return', {}) + + self.assert_no_active_block_jobs() + result = self.vm.qmp('blockdev-mirror', job_id='drive0', device='drive0', + sync='full', target='target') + self.assert_qmp(result, 'return', {}) + self.complete_and_wait() + self.assert_no_active_block_jobs() + + result = self.vm.qmp('blockdev-del', node_name='drive0') + self.assert_qmp(result, 'return', {}) + + result = self.vm.qmp('blockdev-del', node_name='target') + self.assert_qmp(result, 'return', {}) + + self.assertTrue(iotests.compare_images(test_img, target_img), + 'target image does not match source after mirroring') + +class TestGranularity(iotests.QMPTestCase): + image_len = 10 * 1024 * 1024 # MB + + def setUp(self): + qemu_img('create', '-f', iotests.imgfmt, test_img, + str(TestGranularity.image_len)) + qemu_io('-c', 'write 0 %d' % (self.image_len), + test_img) + self.vm = iotests.VM().add_drive(test_img) + self.vm.launch() + + def tearDown(self): + self.vm.shutdown() + self.assertTrue(iotests.compare_images(test_img, target_img), + 'target image does not match source after mirroring') + os.remove(test_img) + os.remove(target_img) + + def test_granularity(self): + self.assert_no_active_block_jobs() + result = self.vm.qmp('drive-mirror', device='drive0', + sync='full', target=target_img, + mode='absolute-paths', granularity=8192) + self.assert_qmp(result, 'return', {}) + + event = self.vm.get_qmp_event(wait=60.0) + while event['event'] == 'JOB_STATUS_CHANGE': + self.assert_qmp(event, 'data/id', 'drive0') + event = self.vm.get_qmp_event(wait=60.0) + + # Failures will manifest as COMPLETED/ERROR. + self.assert_qmp(event, 'event', 'BLOCK_JOB_READY') + self.complete_and_wait(drive='drive0', wait_ready=False) + self.assert_no_active_block_jobs() + +class TestRepairQuorum(iotests.QMPTestCase): + """ This class test quorum file repair using drive-mirror. + It's mostly a fork of TestSingleDrive """ + image_len = 1 * 1024 * 1024 # MB + IMAGES = [ quorum_img1, quorum_img2, quorum_img3 ] + + @iotests.skip_if_unsupported(['quorum']) + def setUp(self): + self.vm = iotests.VM() + + if iotests.qemu_default_machine == 'pc': + self.vm.add_drive(None, 'media=cdrom', 'ide') + + # Add each individual quorum images + for i in self.IMAGES: + qemu_img('create', '-f', iotests.imgfmt, i, + str(self.image_len)) + # Assign a node name to each quorum image in order to manipulate + # them + opts = "node-name=img%i" % self.IMAGES.index(i) + opts += ',driver=%s' % iotests.imgfmt + opts += ',file.driver=file' + opts += ',file.filename=%s' % i + self.vm = self.vm.add_blockdev(opts) + + self.vm.launch() + + #assemble the quorum block device from the individual files + args = { "driver": "quorum", "node-name": "quorum0", + "vote-threshold": 2, "children": [ "img0", "img1", "img2" ] } + result = self.vm.qmp("blockdev-add", **args) + self.assert_qmp(result, 'return', {}) + + + def tearDown(self): + self.vm.shutdown() + for i in self.IMAGES + [ quorum_repair_img, quorum_snapshot_file, + nbd_sock_path ]: + # Do a try/except because the test may have deleted some images + try: + os.remove(i) + except OSError: + pass + + def test_complete(self): + result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0', + sync='full', node_name="repair0", replaces="img1", + target=quorum_repair_img, format=iotests.imgfmt) + self.assert_qmp(result, 'return', {}) + + self.complete_and_wait(drive="job0") + self.assert_has_block_node("repair0", quorum_repair_img) + self.vm.assert_block_path('quorum0', '/children.1', 'repair0') + self.vm.shutdown() + self.assertTrue(iotests.compare_images(quorum_img2, quorum_repair_img), + 'target image does not match source after mirroring') + + def test_cancel(self): + result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0', + sync='full', node_name="repair0", replaces="img1", + target=quorum_repair_img, format=iotests.imgfmt) + self.assert_qmp(result, 'return', {}) + + self.cancel_and_wait(drive="job0", force=True) + # here we check that the last registered quorum file has not been + # swapped out and unref + self.assert_has_block_node(None, quorum_img3) + + def test_cancel_after_ready(self): + result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0', + sync='full', node_name="repair0", replaces="img1", + target=quorum_repair_img, format=iotests.imgfmt) + self.assert_qmp(result, 'return', {}) + + self.wait_ready_and_cancel(drive="job0") + # here we check that the last registered quorum file has not been + # swapped out and unref + self.assert_has_block_node(None, quorum_img3) + self.vm.shutdown() + self.assertTrue(iotests.compare_images(quorum_img2, quorum_repair_img), + 'target image does not match source after mirroring') + + def test_pause(self): + result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0', + sync='full', node_name="repair0", replaces="img1", + target=quorum_repair_img, format=iotests.imgfmt) + self.assert_qmp(result, 'return', {}) + + self.pause_job('job0') + + result = self.vm.qmp('query-block-jobs') + offset = self.dictpath(result, 'return[0]/offset') + + time.sleep(0.5) + result = self.vm.qmp('query-block-jobs') + self.assert_qmp(result, 'return[0]/offset', offset) + + result = self.vm.qmp('block-job-resume', device='job0') + self.assert_qmp(result, 'return', {}) + + self.complete_and_wait(drive="job0") + self.vm.shutdown() + self.assertTrue(iotests.compare_images(quorum_img2, quorum_repair_img), + 'target image does not match source after mirroring') + + def test_medium_not_found(self): + if iotests.qemu_default_machine != 'pc': + return + + result = self.vm.qmp('drive-mirror', job_id='job0', device='drive0', # CD-ROM + sync='full', + node_name='repair0', + replaces='img1', + target=quorum_repair_img, format=iotests.imgfmt) + self.assert_qmp(result, 'error/class', 'GenericError') + + def test_image_not_found(self): + result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0', + sync='full', node_name='repair0', replaces='img1', + mode='existing', target=quorum_repair_img, + format=iotests.imgfmt) + self.assert_qmp(result, 'error/class', 'GenericError') + + def test_device_not_found(self): + result = self.vm.qmp('drive-mirror', job_id='job0', + device='nonexistent', sync='full', + node_name='repair0', + replaces='img1', + target=quorum_repair_img, format=iotests.imgfmt) + self.assert_qmp(result, 'error/class', 'GenericError') + + def test_wrong_sync_mode(self): + result = self.vm.qmp('drive-mirror', device='quorum0', job_id='job0', + node_name='repair0', + replaces='img1', + target=quorum_repair_img, format=iotests.imgfmt) + self.assert_qmp(result, 'error/class', 'GenericError') + + def test_no_node_name(self): + result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0', + sync='full', replaces='img1', + target=quorum_repair_img, format=iotests.imgfmt) + self.assert_qmp(result, 'error/class', 'GenericError') + + def test_nonexistent_replaces(self): + result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0', + sync='full', node_name='repair0', replaces='img77', + target=quorum_repair_img, format=iotests.imgfmt) + self.assert_qmp(result, 'error/class', 'GenericError') + + def test_after_a_quorum_snapshot(self): + result = self.vm.qmp('blockdev-snapshot-sync', node_name='img1', + snapshot_file=quorum_snapshot_file, + snapshot_node_name="snap1"); + + result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0', + sync='full', node_name='repair0', replaces="img1", + target=quorum_repair_img, format=iotests.imgfmt) + self.assert_qmp(result, 'error/class', 'GenericError') + + result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0', + sync='full', node_name='repair0', replaces="snap1", + target=quorum_repair_img, format=iotests.imgfmt) + self.assert_qmp(result, 'return', {}) + + self.complete_and_wait('job0') + self.assert_has_block_node("repair0", quorum_repair_img) + self.vm.assert_block_path('quorum0', '/children.1', 'repair0') + + def test_with_other_parent(self): + """ + Check that we cannot replace a Quorum child when it has other + parents. + """ + result = self.vm.qmp('nbd-server-start', + addr={ + 'type': 'unix', + 'data': {'path': nbd_sock_path} + }) + self.assert_qmp(result, 'return', {}) + + result = self.vm.qmp('nbd-server-add', device='img1') + self.assert_qmp(result, 'return', {}) + + result = self.vm.qmp('drive-mirror', job_id='mirror', device='quorum0', + sync='full', node_name='repair0', replaces='img1', + target=quorum_repair_img, format=iotests.imgfmt) + self.assert_qmp(result, 'error/desc', + "Cannot replace 'img1' by a node mirrored from " + "'quorum0', because it cannot be guaranteed that doing " + "so would not lead to an abrupt change of visible data") + + def test_with_other_parents_after_mirror_start(self): + """ + The same as test_with_other_parent(), but add the NBD server + only when the mirror job is already running. + """ + result = self.vm.qmp('nbd-server-start', + addr={ + 'type': 'unix', + 'data': {'path': nbd_sock_path} + }) + self.assert_qmp(result, 'return', {}) + + result = self.vm.qmp('drive-mirror', job_id='mirror', device='quorum0', + sync='full', node_name='repair0', replaces='img1', + target=quorum_repair_img, format=iotests.imgfmt) + self.assert_qmp(result, 'return', {}) + + result = self.vm.qmp('nbd-server-add', device='img1') + self.assert_qmp(result, 'return', {}) + + # The full error message goes to stderr, we will check it later + self.complete_and_wait('mirror', + completion_error='Operation not permitted') + + # Should not have been replaced + self.vm.assert_block_path('quorum0', '/children.1', 'img1') + + # Check the full error message now + self.vm.shutdown() + log = self.vm.get_log() + log = re.sub(r'^\[I \d+\.\d+\] OPENED\n', '', log) + log = re.sub(r'^Formatting.*\n', '', log) + log = re.sub(r'\n\[I \+\d+\.\d+\] CLOSED\n?$', '', log) + log = re.sub(r'^%s: ' % os.path.basename(iotests.qemu_prog), '', log) + + self.assertEqual(log, + "Can no longer replace 'img1' by 'repair0', because " + + "it can no longer be guaranteed that doing so would " + + "not lead to an abrupt change of visible data") + + +# Test mirroring with a source that does not have any parents (not even a +# BlockBackend) +class TestOrphanedSource(iotests.QMPTestCase): + def setUp(self): + blk0 = { 'node-name': 'src', + 'driver': 'null-co' } + + blk1 = { 'node-name': 'dest', + 'driver': 'null-co' } + + blk2 = { 'node-name': 'dest-ro', + 'driver': 'null-co', + 'read-only': 'on' } + + self.vm = iotests.VM() + self.vm.add_blockdev(self.vm.qmp_to_opts(blk0)) + self.vm.add_blockdev(self.vm.qmp_to_opts(blk1)) + self.vm.add_blockdev(self.vm.qmp_to_opts(blk2)) + self.vm.launch() + + def tearDown(self): + self.vm.shutdown() + + def test_no_job_id(self): + self.assert_no_active_block_jobs() + + result = self.vm.qmp('blockdev-mirror', device='src', sync='full', + target='dest') + self.assert_qmp(result, 'error/class', 'GenericError') + + def test_success(self): + self.assert_no_active_block_jobs() + + result = self.vm.qmp('blockdev-mirror', job_id='job', device='src', + sync='full', target='dest') + self.assert_qmp(result, 'return', {}) + + self.complete_and_wait('job') + + def test_failing_permissions(self): + self.assert_no_active_block_jobs() + + result = self.vm.qmp('blockdev-mirror', device='src', sync='full', + target='dest-ro') + self.assert_qmp(result, 'error/class', 'GenericError') + + def test_failing_permission_in_complete(self): + self.assert_no_active_block_jobs() + + # Unshare consistent-read on the target + # (The mirror job does not care) + result = self.vm.qmp('blockdev-add', + driver='blkdebug', + node_name='dest-perm', + image='dest', + unshare_child_perms=['consistent-read']) + self.assert_qmp(result, 'return', {}) + + result = self.vm.qmp('blockdev-mirror', job_id='job', device='src', + sync='full', target='dest', + filter_node_name='mirror-filter') + self.assert_qmp(result, 'return', {}) + + # Require consistent-read on the source + # (We can only add this node once the job has started, or it + # will complain that it does not want to run on non-root nodes) + result = self.vm.qmp('blockdev-add', + driver='blkdebug', + node_name='src-perm', + image='src', + take_child_perms=['consistent-read']) + self.assert_qmp(result, 'return', {}) + + # While completing, mirror will attempt to replace src by + # dest, which must fail because src-perm requires + # consistent-read but dest-perm does not share it; thus + # aborting the job when it is supposed to complete + self.complete_and_wait('job', + completion_error='Operation not permitted') + + # Assert that all of our nodes are still there (except for the + # mirror filter, which should be gone despite the failure) + nodes = self.vm.qmp('query-named-block-nodes')['return'] + nodes = [node['node-name'] for node in nodes] + + for expect in ('src', 'src-perm', 'dest', 'dest-perm'): + self.assertTrue(expect in nodes, '%s disappeared' % expect) + self.assertFalse('mirror-filter' in nodes, + 'Mirror filter node did not disappear') + +# Test cases for @replaces that do not necessarily involve Quorum +class TestReplaces(iotests.QMPTestCase): + # Each of these test cases needs their own block graph, so do not + # create any nodes here + def setUp(self): + self.vm = iotests.VM() + self.vm.launch() + + def tearDown(self): + self.vm.shutdown() + for img in (test_img, target_img): + try: + os.remove(img) + except OSError: + pass + + @iotests.skip_if_unsupported(['copy-on-read']) + def test_replace_filter(self): + """ + Check that we can replace filter nodes. + """ + result = self.vm.qmp('blockdev-add', **{ + 'driver': 'copy-on-read', + 'node-name': 'filter0', + 'file': { + 'driver': 'copy-on-read', + 'node-name': 'filter1', + 'file': { + 'driver': 'null-co' + } + } + }) + self.assert_qmp(result, 'return', {}) + + result = self.vm.qmp('blockdev-add', + node_name='target', driver='null-co') + self.assert_qmp(result, 'return', {}) + + result = self.vm.qmp('blockdev-mirror', job_id='mirror', device='filter0', + target='target', sync='full', replaces='filter1') + self.assert_qmp(result, 'return', {}) + + self.complete_and_wait('mirror') + + self.vm.assert_block_path('filter0', '/file', 'target') + +# Tests for mirror with filters (and how the mirror filter behaves, as +# an example for an implicit filter) +class TestFilters(iotests.QMPTestCase): + def setUp(self): + qemu_img('create', '-f', iotests.imgfmt, backing_img, '1M') + qemu_img('create', '-f', iotests.imgfmt, '-b', backing_img, + '-F', iotests.imgfmt, test_img) + qemu_img('create', '-f', iotests.imgfmt, '-b', backing_img, + '-F', iotests.imgfmt, target_img) + + qemu_io('-c', 'write -P 1 0 512k', backing_img) + qemu_io('-c', 'write -P 2 512k 512k', test_img) + + self.vm = iotests.VM().add_device('virtio-scsi,id=vio-scsi') + self.vm.launch() + + result = self.vm.qmp('blockdev-add', **{ + 'node-name': 'target', + 'driver': iotests.imgfmt, + 'file': { + 'driver': 'file', + 'filename': target_img + }, + 'backing': None + }) + self.assert_qmp(result, 'return', {}) + + self.filterless_chain = { + 'node-name': 'source', + 'driver': iotests.imgfmt, + 'file': { + 'driver': 'file', + 'filename': test_img + }, + 'backing': { + 'node-name': 'backing', + 'driver': iotests.imgfmt, + 'file': { + 'driver': 'file', + 'filename': backing_img + } + } + } + + def tearDown(self): + self.vm.shutdown() + + os.remove(test_img) + os.remove(target_img) + os.remove(backing_img) + + def test_cor(self): + result = self.vm.qmp('blockdev-add', **{ + 'node-name': 'filter', + 'driver': 'copy-on-read', + 'file': self.filterless_chain + }) + self.assert_qmp(result, 'return', {}) + + result = self.vm.qmp('blockdev-mirror', + job_id='mirror', + device='filter', + target='target', + sync='top') + self.assert_qmp(result, 'return', {}) + + self.complete_and_wait('mirror') + + self.vm.qmp('blockdev-del', node_name='target') + + target_map = qemu_img_pipe('map', '--output=json', target_img) + target_map = json.loads(target_map) + + assert target_map[0]['start'] == 0 + assert target_map[0]['length'] == 512 * 1024 + assert target_map[0]['depth'] == 1 + + assert target_map[1]['start'] == 512 * 1024 + assert target_map[1]['length'] == 512 * 1024 + assert target_map[1]['depth'] == 0 + + def test_implicit_mirror_filter(self): + result = self.vm.qmp('blockdev-add', **self.filterless_chain) + self.assert_qmp(result, 'return', {}) + + # We need this so we can query from above the mirror node + result = self.vm.qmp('device_add', + driver='scsi-hd', + id='virtio', + bus='vio-scsi.0', + drive='source') + self.assert_qmp(result, 'return', {}) + + result = self.vm.qmp('blockdev-mirror', + job_id='mirror', + device='source', + target='target', + sync='top') + self.assert_qmp(result, 'return', {}) + + # The mirror filter is now an implicit node, so it should be + # invisible when querying the backing chain + blockdevs = self.vm.qmp('query-block')['return'] + device_info = next(dev for dev in blockdevs if dev['qdev'] == 'virtio') + + assert device_info['inserted']['node-name'] == 'source' + + image_info = device_info['inserted']['image'] + assert image_info['filename'] == test_img + assert image_info['backing-image']['filename'] == backing_img + + self.complete_and_wait('mirror') + + def test_explicit_mirror_filter(self): + # Same test as above, but this time we give the mirror filter + # a node-name so it will not be invisible + result = self.vm.qmp('blockdev-add', **self.filterless_chain) + self.assert_qmp(result, 'return', {}) + + # We need this so we can query from above the mirror node + result = self.vm.qmp('device_add', + driver='scsi-hd', + id='virtio', + bus='vio-scsi.0', + drive='source') + self.assert_qmp(result, 'return', {}) + + result = self.vm.qmp('blockdev-mirror', + job_id='mirror', + device='source', + target='target', + sync='top', + filter_node_name='mirror-filter') + self.assert_qmp(result, 'return', {}) + + # With a node-name given to it, the mirror filter should now + # be visible + blockdevs = self.vm.qmp('query-block')['return'] + device_info = next(dev for dev in blockdevs if dev['qdev'] == 'virtio') + + assert device_info['inserted']['node-name'] == 'mirror-filter' + + self.complete_and_wait('mirror') + + +if __name__ == '__main__': + iotests.main(supported_fmts=['qcow2', 'qed'], + supported_protocols=['file'], + supported_platforms=['linux', 'freebsd', 'netbsd', 'openbsd']) |