#!/usr/bin/env python3 # # Tests for image streaming. # # Copyright (C) 2012 IBM Corp. # # 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 . # import time import os import iotests from iotests import qemu_img, qemu_io 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 TestSingleDrive(iotests.QMPTestCase): image_len = 1 * 1024 * 1024 # MB def setUp(self): iotests.create_image(backing_img, TestSingleDrive.image_len) qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, mid_img) qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % mid_img, test_img) qemu_io('-f', 'raw', '-c', 'write -P 0x1 0 512', backing_img) qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0x1 524288 512', mid_img) self.vm = iotests.VM().add_drive("blkdebug::" + test_img, "backing.node-name=mid," + "backing.backing.node-name=base") self.vm.launch() def tearDown(self): self.vm.shutdown() os.remove(test_img) os.remove(mid_img) os.remove(backing_img) def test_stream(self): self.assert_no_active_block_jobs() result = self.vm.qmp('block-stream', device='drive0') self.assert_qmp(result, 'return', {}) self.wait_until_completed() self.assert_no_active_block_jobs() self.vm.shutdown() self.assertEqual(qemu_io('-f', 'raw', '-c', 'map', backing_img), qemu_io('-f', iotests.imgfmt, '-c', 'map', test_img), 'image file map does not match backing file after streaming') def test_stream_intermediate(self): self.assert_no_active_block_jobs() self.assertNotEqual(qemu_io('-f', 'raw', '-rU', '-c', 'map', backing_img), qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', mid_img), 'image file map matches backing file before streaming') result = self.vm.qmp('block-stream', device='mid', job_id='stream-mid') self.assert_qmp(result, 'return', {}) self.wait_until_completed(drive='stream-mid') self.assert_no_active_block_jobs() self.vm.shutdown() self.assertEqual(qemu_io('-f', 'raw', '-c', 'map', backing_img), qemu_io('-f', iotests.imgfmt, '-c', 'map', mid_img), 'image file map does not match backing file after streaming') def test_stream_pause(self): self.assert_no_active_block_jobs() self.vm.pause_drive('drive0') result = self.vm.qmp('block-stream', device='drive0') self.assert_qmp(result, 'return', {}) self.pause_job('drive0', wait=False) self.vm.resume_drive('drive0') self.pause_wait('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.wait_until_completed() self.assert_no_active_block_jobs() self.vm.shutdown() self.assertEqual(qemu_io('-f', 'raw', '-c', 'map', backing_img), qemu_io('-f', iotests.imgfmt, '-c', 'map', test_img), 'image file map does not match backing file after streaming') def test_stream_no_op(self): self.assert_no_active_block_jobs() # The image map is empty before the operation empty_map = qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', test_img) # This is a no-op: no data should ever be copied from the base image result = self.vm.qmp('block-stream', device='drive0', base=mid_img) self.assert_qmp(result, 'return', {}) self.wait_until_completed() self.assert_no_active_block_jobs() self.vm.shutdown() self.assertEqual(qemu_io('-f', iotests.imgfmt, '-c', 'map', test_img), empty_map, 'image file map changed after a no-op') def test_stream_partial(self): self.assert_no_active_block_jobs() result = self.vm.qmp('block-stream', device='drive0', base=backing_img) self.assert_qmp(result, 'return', {}) self.wait_until_completed() self.assert_no_active_block_jobs() self.vm.shutdown() self.assertEqual(qemu_io('-f', iotests.imgfmt, '-c', 'map', mid_img), qemu_io('-f', iotests.imgfmt, '-c', 'map', test_img), 'image file map does not match backing file after streaming') def test_device_not_found(self): result = self.vm.qmp('block-stream', device='nonexistent') self.assert_qmp(result, 'error/desc', 'Cannot find device=nonexistent nor node_name=nonexistent') def test_job_id_missing(self): result = self.vm.qmp('block-stream', device='mid') self.assert_qmp(result, 'error/desc', "Invalid job ID ''") def test_read_only(self): # Create a new file that we can attach (we need a read-only top) with iotests.FilePath('ro-top.img') as ro_top_path: qemu_img('create', '-f', iotests.imgfmt, ro_top_path, str(self.image_len)) result = self.vm.qmp('blockdev-add', node_name='ro-top', driver=iotests.imgfmt, read_only=True, file={ 'driver': 'file', 'filename': ro_top_path, 'read-only': True }, backing='mid') self.assert_qmp(result, 'return', {}) result = self.vm.qmp('block-stream', job_id='stream', device='ro-top', base_node='base') self.assert_qmp(result, 'error/desc', 'Block node is read-only') result = self.vm.qmp('blockdev-del', node_name='ro-top') self.assert_qmp(result, 'return', {}) class TestParallelOps(iotests.QMPTestCase): num_ops = 4 # Number of parallel block-stream operations num_imgs = num_ops * 2 + 1 image_len = num_ops * 4 * 1024 * 1024 imgs = [] def setUp(self): opts = [] self.imgs = [] # Initialize file names and command-line options for i in range(self.num_imgs): img_depth = self.num_imgs - i - 1 opts.append("backing." * img_depth + "node-name=node%d" % i) self.imgs.append(os.path.join(iotests.test_dir, 'img-%d.img' % i)) # Create all images iotests.create_image(self.imgs[0], self.image_len) for i in range(1, self.num_imgs): qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % self.imgs[i-1], self.imgs[i]) # Put data into the images we are copying data from odd_img_indexes = [x for x in reversed(range(self.num_imgs)) if x % 2 == 1] for i in range(len(odd_img_indexes)): # Alternate between 2MB and 4MB. # This way jobs will not finish in the same order they were created num_mb = 2 + 2 * (i % 2) qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0xFF %dM %dM' % (i * 4, num_mb), self.imgs[odd_img_indexes[i]]) # Attach the drive to the VM self.vm = iotests.VM() self.vm.add_drive(self.imgs[-1], ','.join(opts)) self.vm.launch() def tearDown(self): self.vm.shutdown() for img in self.imgs: os.remove(img) # Test that it's possible to run several block-stream operations # in parallel in the same snapshot chain def test_stream_parallel(self): self.assert_no_active_block_jobs() # Check that the maps don't match before the streaming operations for i in range(2, self.num_imgs, 2): self.assertNotEqual(qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.imgs[i]), qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.imgs[i-1]), 'image file map matches backing file before streaming') # Create all streaming jobs pending_jobs = [] for i in range(2, self.num_imgs, 2): node_name = 'node%d' % i job_id = 'stream-%s' % node_name pending_jobs.append(job_id) result = self.vm.qmp('block-stream', device=node_name, job_id=job_id, base=self.imgs[i-2], speed=512*1024) self.assert_qmp(result, 'return', {}) for job in pending_jobs: result = self.vm.qmp('block-job-set-speed', device=job, speed=0) self.assert_qmp(result, 'return', {}) # Wait for all jobs to be finished. while len(pending_jobs) > 0: for event in self.vm.get_qmp_events(wait=True): if event['event'] == 'BLOCK_JOB_COMPLETED': job_id = self.dictpath(event, 'data/device') self.assertTrue(job_id in pending_jobs) self.assert_qmp_absent(event, 'data/error') pending_jobs.remove(job_id) self.assert_no_active_block_jobs() self.vm.shutdown() # Check that all maps match now for i in range(2, self.num_imgs, 2): self.assertEqual(qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[i]), qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[i-1]), 'image file map does not match backing file after streaming') # Test that it's not possible to perform two block-stream # operations if there are nodes involved in both. def test_overlapping_1(self): self.assert_no_active_block_jobs() # Set a speed limit to make sure that this job blocks the rest result = self.vm.qmp('block-stream', device='node4', job_id='stream-node4', base=self.imgs[1], speed=1024*1024) self.assert_qmp(result, 'return', {}) result = self.vm.qmp('block-stream', device='node5', job_id='stream-node5', base=self.imgs[2]) self.assert_qmp(result, 'error/desc', "Node 'node4' is busy: block device is in use by block job: stream") result = self.vm.qmp('block-stream', device='node3', job_id='stream-node3', base=self.imgs[2]) self.assert_qmp(result, 'error/desc', "Node 'node3' is busy: block device is in use by block job: stream") result = self.vm.qmp('block-stream', device='node4', job_id='stream-node4-v2') self.assert_qmp(result, 'error/desc', "Node 'node4' is busy: block device is in use by block job: stream") # block-commit should also fail if it touches nodes used by the stream job result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[4], job_id='commit-node4') self.assert_qmp(result, 'error/desc', "Node 'node4' is busy: block device is in use by block job: stream") result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[1], top=self.imgs[3], job_id='commit-node1') self.assert_qmp(result, 'error/desc', "Node 'node3' is busy: block device is in use by block job: stream") # This fails because it needs to modify the backing string in node2, which is blocked result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[0], top=self.imgs[1], job_id='commit-node0') self.assert_qmp(result, 'error/desc', "Node 'node2' is busy: block device is in use by block job: stream") result = self.vm.qmp('block-job-set-speed', device='stream-node4', speed=0) self.assert_qmp(result, 'return', {}) self.wait_until_completed(drive='stream-node4') self.assert_no_active_block_jobs() # Similar to test_overlapping_1, but with block-commit # blocking the other jobs def test_overlapping_2(self): self.assertLessEqual(9, self.num_imgs) self.assert_no_active_block_jobs() # Set a speed limit to make sure that this job blocks the rest result = self.vm.qmp('block-commit', device='drive0', top=self.imgs[5], base=self.imgs[3], job_id='commit-node3', speed=1024*1024) self.assert_qmp(result, 'return', {}) result = self.vm.qmp('block-stream', device='node3', job_id='stream-node3') self.assert_qmp(result, 'error/desc', "Node 'node3' is busy: block device is in use by block job: commit") result = self.vm.qmp('block-stream', device='node6', base=self.imgs[2], job_id='stream-node6') self.assert_qmp(result, 'error/desc', "Node 'node5' is busy: block device is in use by block job: commit") result = self.vm.qmp('block-stream', device='node4', base=self.imgs[2], job_id='stream-node4') self.assert_qmp(result, 'error/desc', "Node 'node4' is busy: block device is in use by block job: commit") result = self.vm.qmp('block-stream', device='node6', base=self.imgs[4], job_id='stream-node6-v2') self.assert_qmp(result, 'error/desc', "Node 'node5' is busy: block device is in use by block job: commit") # This fails because block-commit currently blocks the active layer even if it's not used result = self.vm.qmp('block-stream', device='drive0', base=self.imgs[5], job_id='stream-drive0') self.assert_qmp(result, 'error/desc', "Node 'drive0' is busy: block device is in use by block job: commit") result = self.vm.qmp('block-job-set-speed', device='commit-node3', speed=0) self.assert_qmp(result, 'return', {}) self.wait_until_completed(drive='commit-node3') # Similar to test_overlapping_2, but here block-commit doesn't use the 'top' parameter. # Internally this uses a mirror block job, hence the separate test case. def test_overlapping_3(self): self.assertLessEqual(8, self.num_imgs) self.assert_no_active_block_jobs() # Set a speed limit to make sure that this job blocks the rest result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[3], job_id='commit-drive0', speed=1024*1024) self.assert_qmp(result, 'return', {}) result = self.vm.qmp('block-stream', device='node5', base=self.imgs[3], job_id='stream-node6') self.assert_qmp(result, 'error/desc', "Node 'node5' is busy: block device is in use by block job: commit") event = self.vm.event_wait(name='BLOCK_JOB_READY') self.assert_qmp(event, 'data/device', 'commit-drive0') self.assert_qmp(event, 'data/type', 'commit') self.assert_qmp_absent(event, 'data/error') result = self.vm.qmp('block-job-set-speed', device='commit-drive0', speed=0) self.assert_qmp(result, 'return', {}) result = self.vm.qmp('block-job-complete', device='commit-drive0') self.assert_qmp(result, 'return', {}) self.wait_until_completed(drive='commit-drive0') # In this case the base node of the stream job is the same as the # top node of commit job. Since this results in the commit filter # node being part of the stream chain, this is not allowed. def test_overlapping_4(self): self.assert_no_active_block_jobs() # Commit from node2 into node0 result = self.vm.qmp('block-commit', device='drive0', top=self.imgs[2], base=self.imgs[0], filter_node_name='commit-filter', speed=1024*1024) self.assert_qmp(result, 'return', {}) # Stream from node2 into node4 result = self.vm.qmp('block-stream', device='node4', base_node='node2', job_id='node4') self.assert_qmp(result, 'error/desc', "Cannot freeze 'backing' link to 'commit-filter'") result = self.vm.qmp('block-job-set-speed', device='drive0', speed=0) self.assert_qmp(result, 'return', {}) self.wait_until_completed() self.assert_no_active_block_jobs() # In this case the base node of the stream job is the commit job's # filter node. stream does not have a real dependency on its base # node, so even though commit removes it when it is done, there is # no conflict. def test_overlapping_5(self): self.assert_no_active_block_jobs() # Commit from node2 into node0 result = self.vm.qmp('block-commit', device='drive0', top_node='node2', base_node='node0', filter_node_name='commit-filter', speed=1024*1024) self.assert_qmp(result, 'return', {}) # Stream from node2 into node4 result = self.vm.qmp('block-stream', device='node4', base_node='commit-filter', job_id='node4') self.assert_qmp(result, 'return', {}) result = self.vm.qmp('block-job-set-speed', device='drive0', speed=0) self.assert_qmp(result, 'return', {}) self.vm.run_job(job='drive0', auto_dismiss=True, use_log=False) self.vm.run_job(job='node4', auto_dismiss=True, use_log=False) self.assert_no_active_block_jobs() # Test a block-stream and a block-commit job in parallel # Here the stream job is supposed to finish quickly in order to reproduce # the scenario that triggers the bug fixed in 3d5d319e1221 and 1a63a907507 def test_stream_commit_1(self): self.assertLessEqual(8, self.num_imgs) self.assert_no_active_block_jobs() # Stream from node0 into node2 result = self.vm.qmp('block-stream', device='node2', base_node='node0', job_id='node2') self.assert_qmp(result, 'return', {}) # Commit from the active layer into node3 result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[3]) self.assert_qmp(result, 'return', {}) # Wait for all jobs to be finished. pending_jobs = ['node2', 'drive0'] while len(pending_jobs) > 0: for event in self.vm.get_qmp_events(wait=True): if event['event'] == 'BLOCK_JOB_COMPLETED': node_name = self.dictpath(event, 'data/device') self.assertTrue(node_name in pending_jobs) self.assert_qmp_absent(event, 'data/error') pending_jobs.remove(node_name) if event['event'] == 'BLOCK_JOB_READY': self.assert_qmp(event, 'data/device', 'drive0') self.assert_qmp(event, 'data/type', 'commit') self.assert_qmp_absent(event, 'data/error') self.assertTrue('drive0' in pending_jobs) self.vm.qmp('block-job-complete', device='drive0') self.assert_no_active_block_jobs() # This is similar to test_stream_commit_1 but both jobs are slowed # down so they can run in parallel for a little while. def test_stream_commit_2(self): self.assertLessEqual(8, self.num_imgs) self.assert_no_active_block_jobs() # Stream from node0 into node4 result = self.vm.qmp('block-stream', device='node4', base_node='node0', job_id='node4', speed=1024*1024) self.assert_qmp(result, 'return', {}) # Commit from the active layer into node5 result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[5], speed=1024*1024) self.assert_qmp(result, 'return', {}) for job in ['drive0', 'node4']: result = self.vm.qmp('block-job-set-speed', device=job, speed=0) self.assert_qmp(result, 'return', {}) # Wait for all jobs to be finished. pending_jobs = ['node4', 'drive0'] while len(pending_jobs) > 0: for event in self.vm.get_qmp_events(wait=True): if event['event'] == 'BLOCK_JOB_COMPLETED': node_name = self.dictpath(event, 'data/device') self.assertTrue(node_name in pending_jobs) self.assert_qmp_absent(event, 'data/error') pending_jobs.remove(node_name) if event['event'] == 'BLOCK_JOB_READY': self.assert_qmp(event, 'data/device', 'drive0') self.assert_qmp(event, 'data/type', 'commit') self.assert_qmp_absent(event, 'data/error') self.assertTrue('drive0' in pending_jobs) self.vm.qmp('block-job-complete', device='drive0') self.assert_no_active_block_jobs() # Test the base_node parameter def test_stream_base_node_name(self): self.assert_no_active_block_jobs() self.assertNotEqual(qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.imgs[4]), qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.imgs[3]), 'image file map matches backing file before streaming') # Error: the base node does not exist result = self.vm.qmp('block-stream', device='node4', base_node='none', job_id='stream') self.assert_qmp(result, 'error/desc', 'Cannot find device= nor node_name=none') # Error: the base node is not a backing file of the top node result = self.vm.qmp('block-stream', device='node4', base_node='node6', job_id='stream') self.assert_qmp(result, 'error/desc', "Node 'node6' is not a backing image of 'node4'") # Error: the base node is the same as the top node result = self.vm.qmp('block-stream', device='node4', base_node='node4', job_id='stream') self.assert_qmp(result, 'error/desc', "Node 'node4' is not a backing image of 'node4'") # Error: cannot specify 'base' and 'base-node' at the same time result = self.vm.qmp('block-stream', device='node4', base=self.imgs[2], base_node='node2', job_id='stream') self.assert_qmp(result, 'error/desc', "'base' and 'base-node' cannot be specified at the same time") # Success: the base node is a backing file of the top node result = self.vm.qmp('block-stream', device='node4', base_node='node2', job_id='stream') self.assert_qmp(result, 'return', {}) self.wait_until_completed(drive='stream') self.assert_no_active_block_jobs() self.vm.shutdown() self.assertEqual(qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[4]), qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[3]), 'image file map matches backing file after streaming') class TestQuorum(iotests.QMPTestCase): num_children = 3 children = [] backing = [] @iotests.skip_if_unsupported(['quorum']) def setUp(self): opts = ['driver=quorum', 'vote-threshold=2'] # Initialize file names and command-line options for i in range(self.num_children): child_img = os.path.join(iotests.test_dir, 'img-%d.img' % i) backing_img = os.path.join(iotests.test_dir, 'backing-%d.img' % i) self.children.append(child_img) self.backing.append(backing_img) qemu_img('create', '-f', iotests.imgfmt, backing_img, '1M') qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0x55 0 1024', backing_img) qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, child_img) opts.append("children.%d.file.filename=%s" % (i, child_img)) opts.append("children.%d.node-name=node%d" % (i, i)) # Attach the drive to the VM self.vm = iotests.VM() self.vm.add_drive(path = None, opts = ','.join(opts)) self.vm.launch() def tearDown(self): self.vm.shutdown() for img in self.children: os.remove(img) for img in self.backing: os.remove(img) def test_stream_quorum(self): self.assertNotEqual(qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.children[0]), qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.backing[0]), 'image file map matches backing file before streaming') self.assert_no_active_block_jobs() result = self.vm.qmp('block-stream', device='node0', job_id='stream-node0') self.assert_qmp(result, 'return', {}) self.wait_until_completed(drive='stream-node0') self.assert_no_active_block_jobs() self.vm.shutdown() self.assertEqual(qemu_io('-f', iotests.imgfmt, '-c', 'map', self.children[0]), qemu_io('-f', iotests.imgfmt, '-c', 'map', self.backing[0]), 'image file map does not match backing file after streaming') class TestSmallerBackingFile(iotests.QMPTestCase): backing_len = 1 * 1024 * 1024 # MB image_len = 2 * backing_len def setUp(self): iotests.create_image(backing_img, self.backing_len) qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img, str(self.image_len)) self.vm = iotests.VM().add_drive(test_img) self.vm.launch() # If this hangs, then you are missing a fix to complete streaming when the # end of the backing file is reached. def test_stream(self): self.assert_no_active_block_jobs() result = self.vm.qmp('block-stream', device='drive0') self.assert_qmp(result, 'return', {}) self.wait_until_completed() self.assert_no_active_block_jobs() self.vm.shutdown() class TestErrors(iotests.QMPTestCase): image_len = 2 * 1024 * 1024 # MB # this should match STREAM_BUFFER_SIZE/512 in block/stream.c STREAM_BUFFER_SIZE = 512 * 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.STREAM_BUFFER_SIZE // 512, event, event)) file.close() class TestEIO(TestErrors): def setUp(self): self.blkdebug_file = backing_img + ".blkdebug" iotests.create_image(backing_img, TestErrors.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) 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(self.blkdebug_file) def test_report(self): self.assert_no_active_block_jobs() result = self.vm.qmp('block-stream', device='drive0') 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_COMPLETED': self.assertTrue(error, 'job completed unexpectedly') self.assert_qmp(event, 'data/type', 'stream') self.assert_qmp(event, 'data/device', 'drive0') self.assert_qmp(event, 'data/error', 'Input/output error') self.assert_qmp(event, 'data/offset', self.STREAM_BUFFER_SIZE) self.assert_qmp(event, 'data/len', self.image_len) completed = True elif event['event'] == 'JOB_STATUS_CHANGE': self.assert_qmp(event, 'data/id', 'drive0') self.assert_no_active_block_jobs() self.vm.shutdown() def test_ignore(self): self.assert_no_active_block_jobs() result = self.vm.qmp('block-stream', device='drive0', on_error='ignore') self.assert_qmp(result, 'return', {}) error = False completed = False while not completed: for event in self.vm.get_qmp_events(wait=True): if event['event'] == 'BLOCK_JOB_ERROR': error = True self.assert_qmp(event, 'data/device', 'drive0') self.assert_qmp(event, 'data/operation', 'read') result = self.vm.qmp('query-block-jobs') if result == {'return': []}: # Job finished too quickly continue self.assert_qmp(result, 'return[0]/paused', False) elif event['event'] == 'BLOCK_JOB_COMPLETED': self.assertTrue(error, 'job completed unexpectedly') self.assert_qmp(event, 'data/type', 'stream') self.assert_qmp(event, 'data/device', 'drive0') self.assert_qmp(event, 'data/error', 'Input/output error') self.assert_qmp(event, 'data/offset', self.image_len) self.assert_qmp(event, 'data/len', self.image_len) completed = True elif event['event'] == 'JOB_STATUS_CHANGE': self.assert_qmp(event, 'data/id', 'drive0') self.assert_no_active_block_jobs() self.vm.shutdown() def test_stop(self): self.assert_no_active_block_jobs() result = self.vm.qmp('block-stream', device='drive0', on_error='stop') self.assert_qmp(result, 'return', {}) error = False completed = False while not completed: for event in self.vm.get_qmp_events(wait=True): if event['event'] == 'BLOCK_JOB_ERROR': error = True 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]/offset', self.STREAM_BUFFER_SIZE) 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') if result == {'return': []}: # Race; likely already finished. Check. continue self.assert_qmp(result, 'return[0]/paused', False) self.assert_qmp(result, 'return[0]/io-status', 'ok') elif event['event'] == 'BLOCK_JOB_COMPLETED': self.assertTrue(error, 'job completed unexpectedly') self.assert_qmp(event, 'data/type', 'stream') self.assert_qmp(event, 'data/device', 'drive0') self.assert_qmp_absent(event, 'data/error') self.assert_qmp(event, 'data/offset', self.image_len) self.assert_qmp(event, 'data/len', self.image_len) completed = True elif event['event'] == 'JOB_STATUS_CHANGE': self.assert_qmp(event, 'data/id', 'drive0') self.assert_no_active_block_jobs() self.vm.shutdown() def test_enospc(self): self.assert_no_active_block_jobs() result = self.vm.qmp('block-stream', device='drive0', on_error='enospc') 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_COMPLETED': self.assertTrue(error, 'job completed unexpectedly') self.assert_qmp(event, 'data/type', 'stream') self.assert_qmp(event, 'data/device', 'drive0') self.assert_qmp(event, 'data/error', 'Input/output error') self.assert_qmp(event, 'data/offset', self.STREAM_BUFFER_SIZE) self.assert_qmp(event, 'data/len', self.image_len) completed = True elif event['event'] == 'JOB_STATUS_CHANGE': self.assert_qmp(event, 'data/id', 'drive0') self.assert_no_active_block_jobs() self.vm.shutdown() class TestENOSPC(TestErrors): def setUp(self): self.blkdebug_file = backing_img + ".blkdebug" iotests.create_image(backing_img, TestErrors.image_len) self.create_blkdebug_file(self.blkdebug_file, "read_aio", 28) qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=blkdebug:%s:%s,backing_fmt=raw' % (self.blkdebug_file, backing_img), 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(self.blkdebug_file) def test_enospc(self): self.assert_no_active_block_jobs() result = self.vm.qmp('block-stream', device='drive0', on_error='enospc') self.assert_qmp(result, 'return', {}) error = False completed = 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 result = self.vm.qmp('query-block-jobs') self.assert_qmp(result, 'return[0]/paused', True) self.assert_qmp(result, 'return[0]/offset', self.STREAM_BUFFER_SIZE) self.assert_qmp(result, 'return[0]/io-status', 'nospace') result = self.vm.qmp('block-job-resume', device='drive0') self.assert_qmp(result, 'return', {}) result = self.vm.qmp('query-block-jobs') if result == {'return': []}: # Race; likely already finished. Check. continue self.assert_qmp(result, 'return[0]/paused', False) self.assert_qmp(result, 'return[0]/io-status', 'ok') elif event['event'] == 'BLOCK_JOB_COMPLETED': self.assertTrue(error, 'job completed unexpectedly') self.assert_qmp(event, 'data/type', 'stream') self.assert_qmp(event, 'data/device', 'drive0') self.assert_qmp_absent(event, 'data/error') self.assert_qmp(event, 'data/offset', self.image_len) self.assert_qmp(event, 'data/len', self.image_len) completed = True elif event['event'] == 'JOB_STATUS_CHANGE': self.assert_qmp(event, 'data/id', 'drive0') self.assert_no_active_block_jobs() self.vm.shutdown() class TestStreamStop(iotests.QMPTestCase): image_len = 8 * 1024 * 1024 * 1024 # GB def setUp(self): qemu_img('create', backing_img, str(TestStreamStop.image_len)) qemu_io('-f', 'raw', '-c', 'write -P 0x1 0 32M', backing_img) qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img) qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0x1 32M 32M', test_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(backing_img) def test_stream_stop(self): self.assert_no_active_block_jobs() self.vm.pause_drive('drive0') result = self.vm.qmp('block-stream', device='drive0') self.assert_qmp(result, 'return', {}) time.sleep(0.1) events = self.vm.get_qmp_events(wait=False) for e in events: self.assert_qmp(e, 'event', 'JOB_STATUS_CHANGE') self.assert_qmp(e, 'data/id', 'drive0') self.cancel_and_wait(resume=True) class TestSetSpeed(iotests.QMPTestCase): image_len = 80 * 1024 * 1024 # MB def setUp(self): qemu_img('create', backing_img, str(TestSetSpeed.image_len)) qemu_io('-f', 'raw', '-c', 'write -P 0x1 0 32M', backing_img) qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img) qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0x1 32M 32M', test_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(backing_img) # This is a short performance test which is not run by default. # Invoke "IMGFMT=qed ./030 TestSetSpeed.perf_test_throughput" def perf_test_throughput(self): self.assert_no_active_block_jobs() result = self.vm.qmp('block-stream', device='drive0') self.assert_qmp(result, 'return', {}) result = self.vm.qmp('block-job-set-speed', device='drive0', speed=8 * 1024 * 1024) self.assert_qmp(result, 'return', {}) self.wait_until_completed() self.assert_no_active_block_jobs() def test_set_speed(self): self.assert_no_active_block_jobs() self.vm.pause_drive('drive0') result = self.vm.qmp('block-stream', device='drive0') 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.cancel_and_wait(resume=True) self.vm.pause_drive('drive0') # Check setting speed in block-stream works result = self.vm.qmp('block-stream', device='drive0', 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.cancel_and_wait(resume=True) def test_set_speed_invalid(self): self.assert_no_active_block_jobs() result = self.vm.qmp('block-stream', device='drive0', speed=-1) self.assert_qmp(result, 'error/desc', "Parameter 'speed' expects a non-negative value") self.assert_no_active_block_jobs() self.vm.pause_drive('drive0') result = self.vm.qmp('block-stream', device='drive0') self.assert_qmp(result, 'return', {}) result = self.vm.qmp('block-job-set-speed', device='drive0', speed=-1) self.assert_qmp(result, 'error/desc', "Parameter 'speed' expects a non-negative value") self.cancel_and_wait(resume=True) if __name__ == '__main__': iotests.main(supported_fmts=['qcow2', 'qed'], supported_protocols=['file'])