--- /dev/null
+#!/usr/bin/env python
+#
+# 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 <http://www.gnu.org/licenses/>.
+#
+
+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)
+ 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_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_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', {})
+
+ result = self.vm.qmp('block-job-pause', device='drive0')
+ self.assert_qmp(result, 'return', {})
+
+ time.sleep(1)
+ result = self.vm.qmp('query-block-jobs')
+ offset = self.dictpath(result, 'return[0]/offset')
+
+ time.sleep(1)
+ 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.vm.resume_drive('drive0')
+ 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_partial(self):
+ self.assert_no_active_block_jobs()
+
+ 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', 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/class', 'DeviceNotFound')
+
+
+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
+
+ 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':
+ 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)
+ 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.image_len)
+ self.assert_qmp(event, 'data/len', self.image_len)
+ completed = True
+
+ 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':
+ 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')
+ self.assert_qmp(result, 'return[0]/paused', False)
+ self.assert_qmp(result, 'return[0]/io-status', 'ok')
+ 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_absent(event, 'data/error')
+ self.assert_qmp(event, 'data/offset', self.image_len)
+ self.assert_qmp(event, 'data/len', self.image_len)
+ completed = True
+
+ 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
+
+ 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')
+
+ 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')
+ self.assert_qmp(result, 'return[0]/paused', False)
+ self.assert_qmp(result, 'return[0]/io-status', 'ok')
+ 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_absent(event, 'data/error')
+ self.assert_qmp(event, 'data/offset', self.image_len)
+ self.assert_qmp(event, 'data/len', self.image_len)
+ completed = True
+
+ 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)
+ self.assertEqual(events, [], 'unexpected QMP event: %s' % events)
+
+ 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/class', 'GenericError')
+
+ 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=-1)
+ self.assert_qmp(result, 'error/class', 'GenericError')
+
+ self.cancel_and_wait()
+
+if __name__ == '__main__':
+ iotests.main(supported_fmts=['qcow2', 'qed'])
Code Review / kvmfornfv.git / blobdiff