[qemu.git] / tests / qemu-iotests / 136

#!/usr/bin/env python
#
# Tests for block device statistics
#
# Copyright (C) 2015 Igalia, S.L.
# Author: Alberto Garcia <[email protected]>
#
# 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 iotests
import os

interval_length = 10
nsec_per_sec = 1000000000
op_latency = nsec_per_sec / 1000 # See qtest_latency_ns in accounting.c
bad_sector = 8192
bad_offset = bad_sector * 512
blkdebug_file = os.path.join(iotests.test_dir, 'blkdebug.conf')

class BlockDeviceStatsTestCase(iotests.QMPTestCase):
    test_img = "null-aio://"
    total_rd_bytes = 0
    total_rd_ops = 0
    total_wr_bytes = 0
    total_wr_ops = 0
    total_wr_merged = 0
    total_flush_ops = 0
    failed_rd_ops = 0
    failed_wr_ops = 0
    invalid_rd_ops = 0
    invalid_wr_ops = 0
    wr_highest_offset = 0
    account_invalid = False
    account_failed = False

    def blockstats(self, device):
        result = self.vm.qmp("query-blockstats")
        for r in result['return']:
            if r['device'] == device:
                return r['stats']
        raise Exception("Device not found for blockstats: %s" % device)

    def create_blkdebug_file(self):
        file = open(blkdebug_file, 'w')
        file.write('''
[inject-error]
event = "read_aio"
errno = "5"
sector = "%d"

[inject-error]
event = "write_aio"
errno = "5"
sector = "%d"
''' % (bad_sector, bad_sector))
        file.close()

    def setUp(self):
        drive_args = []
        drive_args.append("stats-intervals.0=%d" % interval_length)
        drive_args.append("stats-account-invalid=%s" %
                          (self.account_invalid and "on" or "off"))
        drive_args.append("stats-account-failed=%s" %
                          (self.account_failed and "on" or "off"))
        self.create_blkdebug_file()
        self.vm = iotests.VM().add_drive('blkdebug:%s:%s' %
                                         (blkdebug_file, self.test_img),
                                         ','.join(drive_args))
        self.vm.launch()
        # Set an initial value for the clock
        self.vm.qtest("clock_step %d" % nsec_per_sec)

    def tearDown(self):
        self.vm.shutdown()
        os.remove(blkdebug_file)

    def accounted_ops(self, read = False, write = False, flush = False):
        ops = 0
        if write:
            ops += self.total_wr_ops
            if self.account_failed:
                ops += self.failed_wr_ops
            if self.account_invalid:
                ops += self.invalid_wr_ops
        if read:
            ops += self.total_rd_ops
            if self.account_failed:
                ops += self.failed_rd_ops
            if self.account_invalid:
                ops += self.invalid_rd_ops
        if flush:
            ops += self.total_flush_ops
        return ops

    def accounted_latency(self, read = False, write = False, flush = False):
        latency = 0
        if write:
            latency += self.total_wr_ops * op_latency
            if self.account_failed:
                latency += self.failed_wr_ops * op_latency
        if read:
            latency += self.total_rd_ops * op_latency
            if self.account_failed:
                latency += self.failed_rd_ops * op_latency
        if flush:
            latency += self.total_flush_ops * op_latency
        return latency

    def check_values(self):
        stats = self.blockstats('drive0')

        # Check that the totals match with what we have calculated
        self.assertEqual(self.total_rd_bytes, stats['rd_bytes'])
        self.assertEqual(self.total_wr_bytes, stats['wr_bytes'])
        self.assertEqual(self.total_rd_ops, stats['rd_operations'])
        self.assertEqual(self.total_wr_ops, stats['wr_operations'])
        self.assertEqual(self.total_flush_ops, stats['flush_operations'])
        self.assertEqual(self.wr_highest_offset, stats['wr_highest_offset'])
        self.assertEqual(self.failed_rd_ops, stats['failed_rd_operations'])
        self.assertEqual(self.failed_wr_ops, stats['failed_wr_operations'])
        self.assertEqual(self.invalid_rd_ops, stats['invalid_rd_operations'])
        self.assertEqual(self.invalid_wr_ops, stats['invalid_wr_operations'])
        self.assertEqual(self.account_invalid, stats['account_invalid'])
        self.assertEqual(self.account_failed, stats['account_failed'])
        self.assertEqual(self.total_wr_merged, stats['wr_merged'])

        # Check that there's exactly one interval with the length we defined
        self.assertEqual(1, len(stats['timed_stats']))
        timed_stats = stats['timed_stats'][0]
        self.assertEqual(interval_length, timed_stats['interval_length'])

        total_rd_latency = self.accounted_latency(read = True)
        if (total_rd_latency != 0):
            self.assertEqual(total_rd_latency, stats['rd_total_time_ns'])
            self.assertEqual(op_latency, timed_stats['min_rd_latency_ns'])
            self.assertEqual(op_latency, timed_stats['max_rd_latency_ns'])
            self.assertEqual(op_latency, timed_stats['avg_rd_latency_ns'])
            self.assertLess(0, timed_stats['avg_rd_queue_depth'])
        else:
            self.assertEqual(0, stats['rd_total_time_ns'])
            self.assertEqual(0, timed_stats['min_rd_latency_ns'])
            self.assertEqual(0, timed_stats['max_rd_latency_ns'])
            self.assertEqual(0, timed_stats['avg_rd_latency_ns'])
            self.assertEqual(0, timed_stats['avg_rd_queue_depth'])

        # min read latency <= avg read latency <= max read latency
        self.assertLessEqual(timed_stats['min_rd_latency_ns'],
                             timed_stats['avg_rd_latency_ns'])
        self.assertLessEqual(timed_stats['avg_rd_latency_ns'],
                             timed_stats['max_rd_latency_ns'])

        total_wr_latency = self.accounted_latency(write = True)
        if (total_wr_latency != 0):
            self.assertEqual(total_wr_latency, stats['wr_total_time_ns'])
            self.assertEqual(op_latency, timed_stats['min_wr_latency_ns'])
            self.assertEqual(op_latency, timed_stats['max_wr_latency_ns'])
            self.assertEqual(op_latency, timed_stats['avg_wr_latency_ns'])
            self.assertLess(0, timed_stats['avg_wr_queue_depth'])
        else:
            self.assertEqual(0, stats['wr_total_time_ns'])
            self.assertEqual(0, timed_stats['min_wr_latency_ns'])
            self.assertEqual(0, timed_stats['max_wr_latency_ns'])
            self.assertEqual(0, timed_stats['avg_wr_latency_ns'])
            self.assertEqual(0, timed_stats['avg_wr_queue_depth'])

        # min write latency <= avg write latency <= max write latency
        self.assertLessEqual(timed_stats['min_wr_latency_ns'],
                             timed_stats['avg_wr_latency_ns'])
        self.assertLessEqual(timed_stats['avg_wr_latency_ns'],
                             timed_stats['max_wr_latency_ns'])

        total_flush_latency = self.accounted_latency(flush = True)
        if (total_flush_latency != 0):
            self.assertEqual(total_flush_latency, stats['flush_total_time_ns'])
            self.assertEqual(op_latency, timed_stats['min_flush_latency_ns'])
            self.assertEqual(op_latency, timed_stats['max_flush_latency_ns'])
            self.assertEqual(op_latency, timed_stats['avg_flush_latency_ns'])
        else:
            self.assertEqual(0, stats['flush_total_time_ns'])
            self.assertEqual(0, timed_stats['min_flush_latency_ns'])
            self.assertEqual(0, timed_stats['max_flush_latency_ns'])
            self.assertEqual(0, timed_stats['avg_flush_latency_ns'])

        # min flush latency <= avg flush latency <= max flush latency
        self.assertLessEqual(timed_stats['min_flush_latency_ns'],
                             timed_stats['avg_flush_latency_ns'])
        self.assertLessEqual(timed_stats['avg_flush_latency_ns'],
                             timed_stats['max_flush_latency_ns'])

        # idle_time_ns must be > 0 if we have performed any operation
        if (self.accounted_ops(read = True, write = True, flush = True) != 0):
            self.assertLess(0, stats['idle_time_ns'])
        else:
            self.assertFalse(stats.has_key('idle_time_ns'))

        # This test does not alter these, so they must be all 0
        self.assertEqual(0, stats['rd_merged'])
        self.assertEqual(0, stats['failed_flush_operations'])
        self.assertEqual(0, stats['invalid_flush_operations'])

    def do_test_stats(self, rd_size = 0, rd_ops = 0, wr_size = 0, wr_ops = 0,
                      flush_ops = 0, invalid_rd_ops = 0, invalid_wr_ops = 0,
                      failed_rd_ops = 0, failed_wr_ops = 0, wr_merged = 0):
        # The 'ops' list will contain all the requested I/O operations
        ops = []
        for i in range(rd_ops):
            ops.append("aio_read %d %d" % (i * rd_size, rd_size))

        for i in range(wr_ops):
            ops.append("aio_write %d %d" % (i * wr_size, wr_size))

        for i in range(flush_ops):
            ops.append("aio_flush")

        highest_offset = wr_ops * wr_size

        for i in range(invalid_rd_ops):
            ops.append("aio_read -i 0 512")

        for i in range(invalid_wr_ops):
            ops.append("aio_write -i 0 512")

        for i in range(failed_rd_ops):
            ops.append("aio_read %d 512" % bad_offset)

        for i in range(failed_wr_ops):
            ops.append("aio_write %d 512" % bad_offset)

        if failed_wr_ops > 0:
            highest_offset = max(highest_offset, bad_offset + 512)

        # Now perform all operations
        for op in ops:
            self.vm.hmp_qemu_io("drive0", op)

        # Update the expected totals
        self.total_rd_bytes += rd_ops * rd_size
        self.total_rd_ops += rd_ops
        self.total_wr_bytes += wr_ops * wr_size
        self.total_wr_ops += wr_ops
        self.total_wr_merged += wr_merged
        self.total_flush_ops += flush_ops
        self.invalid_rd_ops += invalid_rd_ops
        self.invalid_wr_ops += invalid_wr_ops
        self.failed_rd_ops += failed_rd_ops
        self.failed_wr_ops += failed_wr_ops

        self.wr_highest_offset = max(self.wr_highest_offset, highest_offset)

        # Advance the clock so idle_time_ns has a meaningful value
        self.vm.qtest("clock_step %d" % nsec_per_sec)

        # And check that the actual statistics match the expected ones
        self.check_values()

    def test_read_only(self):
        test_values = [[512,    1],
                       [65536,  1],
                       [512,   12],
                       [65536, 12]]
        for i in test_values:
            self.do_test_stats(rd_size = i[0], rd_ops = i[1])

    def test_write_only(self):
        test_values = [[512,    1],
                       [65536,  1],
                       [512,   12],
                       [65536, 12]]
        for i in test_values:
            self.do_test_stats(wr_size = i[0], wr_ops = i[1])

    def test_invalid(self):
        self.do_test_stats(invalid_rd_ops = 7)
        self.do_test_stats(invalid_wr_ops = 3)
        self.do_test_stats(invalid_rd_ops = 4, invalid_wr_ops = 5)

    def test_failed(self):
        self.do_test_stats(failed_rd_ops = 8)
        self.do_test_stats(failed_wr_ops = 6)
        self.do_test_stats(failed_rd_ops = 5, failed_wr_ops = 12)

    def test_flush(self):
        self.do_test_stats(flush_ops = 8)

    def test_all(self):
        # rd_size, rd_ops, wr_size, wr_ops, flush_ops
        # invalid_rd_ops,  invalid_wr_ops,
        # failed_rd_ops,   failed_wr_ops
        # wr_merged
        test_values = [[512,    1, 512,   1, 1, 4, 7, 5, 2, 0],
                       [65536,  1, 2048, 12, 7, 7, 5, 2, 5, 0],
                       [32768,  9, 8192,  1, 4, 3, 2, 4, 6, 0],
                       [16384, 11, 3584, 16, 9, 8, 6, 7, 3, 0]]
        for i in test_values:
            self.do_test_stats(*i)

    def test_no_op(self):
        # All values must be sane before doing any I/O
        self.check_values()


class BlockDeviceStatsTestAccountInvalid(BlockDeviceStatsTestCase):
    account_invalid = True
    account_failed = False

class BlockDeviceStatsTestAccountFailed(BlockDeviceStatsTestCase):
    account_invalid = False
    account_failed = True

class BlockDeviceStatsTestAccountBoth(BlockDeviceStatsTestCase):
    account_invalid = True
    account_failed = True

class BlockDeviceStatsTestCoroutine(BlockDeviceStatsTestCase):
    test_img = "null-co://"

if __name__ == '__main__':
    iotests.main(supported_fmts=["raw"])
Commit	Line	Data
4214face AG	1	#!/usr/bin/env python
	2	#
	3	# Tests for block device statistics
	4	#
	5	# Copyright (C) 2015 Igalia, S.L.
	6	# Author: Alberto Garcia <[email protected]>
	7	#
	8	# This program is free software; you can redistribute it and/or modify
	9	# it under the terms of the GNU General Public License as published by
	10	# the Free Software Foundation; either version 2 of the License, or
	11	# (at your option) any later version.
	12	#
	13	# This program is distributed in the hope that it will be useful,
	14	# but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	# GNU General Public License for more details.
	17	#
	18	# You should have received a copy of the GNU General Public License
	19	# along with this program. If not, see <http://www.gnu.org/licenses/>.
	20	#
	21
	22	import iotests
	23	import os
	24
	25	interval_length = 10
	26	nsec_per_sec = 1000000000
	27	op_latency = nsec_per_sec / 1000 # See qtest_latency_ns in accounting.c
	28	bad_sector = 8192
	29	bad_offset = bad_sector * 512
	30	blkdebug_file = os.path.join(iotests.test_dir, 'blkdebug.conf')
	31
	32	class BlockDeviceStatsTestCase(iotests.QMPTestCase):
	33	test_img = "null-aio://"
	34	total_rd_bytes = 0
	35	total_rd_ops = 0
	36	total_wr_bytes = 0
	37	total_wr_ops = 0
	38	total_wr_merged = 0
	39	total_flush_ops = 0
	40	failed_rd_ops = 0
	41	failed_wr_ops = 0
	42	invalid_rd_ops = 0
	43	invalid_wr_ops = 0
	44	wr_highest_offset = 0
	45	account_invalid = False
	46	account_failed = False
	47
	48	def blockstats(self, device):
	49	result = self.vm.qmp("query-blockstats")
	50	for r in result['return']:
	51	if r['device'] == device:
	52	return r['stats']
	53	raise Exception("Device not found for blockstats: %s" % device)
	54
	55	def create_blkdebug_file(self):
	56	file = open(blkdebug_file, 'w')
	57	file.write('''
	58	[inject-error]
	59	event = "read_aio"
	60	errno = "5"
	61	sector = "%d"
	62
	63	[inject-error]
	64	event = "write_aio"
65	errno = "5"
66	sector = "%d"
67	''' % (bad_sector, bad_sector))
68	file.close()
69
70	def setUp(self):
71	drive_args = []
40119eff	72	drive_args.append("stats-intervals.0=%d" % interval_length)
4214face AG	73	drive_args.append("stats-account-invalid=%s" %
	74	(self.account_invalid and "on" or "off"))
	75	drive_args.append("stats-account-failed=%s" %
	76	(self.account_failed and "on" or "off"))
	77	self.create_blkdebug_file()
809eb70e	78	self.vm = iotests.VM().add_drive('blkdebug:%s:%s' %
4214face AG	79	(blkdebug_file, self.test_img),
	80	','.join(drive_args))
	81	self.vm.launch()
	82	# Set an initial value for the clock
	83	self.vm.qtest("clock_step %d" % nsec_per_sec)
	84
	85	def tearDown(self):
	86	self.vm.shutdown()
	87	os.remove(blkdebug_file)
	88
	89	def accounted_ops(self, read = False, write = False, flush = False):
	90	ops = 0
	91	if write:
	92	ops += self.total_wr_ops
	93	if self.account_failed:
	94	ops += self.failed_wr_ops
	95	if self.account_invalid:
	96	ops += self.invalid_wr_ops
	97	if read:
	98	ops += self.total_rd_ops
	99	if self.account_failed:
	100	ops += self.failed_rd_ops
	101	if self.account_invalid:
	102	ops += self.invalid_rd_ops
	103	if flush:
	104	ops += self.total_flush_ops
	105	return ops
	106
	107	def accounted_latency(self, read = False, write = False, flush = False):
	108	latency = 0
	109	if write:
	110	latency += self.total_wr_ops * op_latency
	111	if self.account_failed:
	112	latency += self.failed_wr_ops * op_latency
	113	if read:
	114	latency += self.total_rd_ops * op_latency
	115	if self.account_failed:
	116	latency += self.failed_rd_ops * op_latency
	117	if flush:
	118	latency += self.total_flush_ops * op_latency
	119	return latency
	120
	121	def check_values(self):
	122	stats = self.blockstats('drive0')
	123
	124	# Check that the totals match with what we have calculated
	125	self.assertEqual(self.total_rd_bytes, stats['rd_bytes'])
	126	self.assertEqual(self.total_wr_bytes, stats['wr_bytes'])
	127	self.assertEqual(self.total_rd_ops, stats['rd_operations'])
	128	self.assertEqual(self.total_wr_ops, stats['wr_operations'])
	129	self.assertEqual(self.total_flush_ops, stats['flush_operations'])
	130	self.assertEqual(self.wr_highest_offset, stats['wr_highest_offset'])
	131	self.assertEqual(self.failed_rd_ops, stats['failed_rd_operations'])
	132	self.assertEqual(self.failed_wr_ops, stats['failed_wr_operations'])
	133	self.assertEqual(self.invalid_rd_ops, stats['invalid_rd_operations'])
	134	self.assertEqual(self.invalid_wr_ops, stats['invalid_wr_operations'])
	135	self.assertEqual(self.account_invalid, stats['account_invalid'])
	136	self.assertEqual(self.account_failed, stats['account_failed'])
	137	self.assertEqual(self.total_wr_merged, stats['wr_merged'])
	138
	139	# Check that there's exactly one interval with the length we defined
	140	self.assertEqual(1, len(stats['timed_stats']))
	141	timed_stats = stats['timed_stats'][0]
	142	self.assertEqual(interval_length, timed_stats['interval_length'])
143
144	total_rd_latency = self.accounted_latency(read = True)
145	if (total_rd_latency != 0):
146	self.assertEqual(total_rd_latency, stats['rd_total_time_ns'])
147	self.assertEqual(op_latency, timed_stats['min_rd_latency_ns'])
148	self.assertEqual(op_latency, timed_stats['max_rd_latency_ns'])
149	self.assertEqual(op_latency, timed_stats['avg_rd_latency_ns'])
150	self.assertLess(0, timed_stats['avg_rd_queue_depth'])
151	else:
152	self.assertEqual(0, stats['rd_total_time_ns'])
153	self.assertEqual(0, timed_stats['min_rd_latency_ns'])
154	self.assertEqual(0, timed_stats['max_rd_latency_ns'])
155	self.assertEqual(0, timed_stats['avg_rd_latency_ns'])
156	self.assertEqual(0, timed_stats['avg_rd_queue_depth'])
157
158	# min read latency <= avg read latency <= max read latency
159	self.assertLessEqual(timed_stats['min_rd_latency_ns'],
160	timed_stats['avg_rd_latency_ns'])
161	self.assertLessEqual(timed_stats['avg_rd_latency_ns'],
162	timed_stats['max_rd_latency_ns'])
163
164	total_wr_latency = self.accounted_latency(write = True)
165	if (total_wr_latency != 0):
166	self.assertEqual(total_wr_latency, stats['wr_total_time_ns'])
167	self.assertEqual(op_latency, timed_stats['min_wr_latency_ns'])
168	self.assertEqual(op_latency, timed_stats['max_wr_latency_ns'])
169	self.assertEqual(op_latency, timed_stats['avg_wr_latency_ns'])
170	self.assertLess(0, timed_stats['avg_wr_queue_depth'])
171	else:
172	self.assertEqual(0, stats['wr_total_time_ns'])
173	self.assertEqual(0, timed_stats['min_wr_latency_ns'])
174	self.assertEqual(0, timed_stats['max_wr_latency_ns'])
175	self.assertEqual(0, timed_stats['avg_wr_latency_ns'])
176	self.assertEqual(0, timed_stats['avg_wr_queue_depth'])
177
178	# min write latency <= avg write latency <= max write latency
179	self.assertLessEqual(timed_stats['min_wr_latency_ns'],
180	timed_stats['avg_wr_latency_ns'])
181	self.assertLessEqual(timed_stats['avg_wr_latency_ns'],
182	timed_stats['max_wr_latency_ns'])
183
184	total_flush_latency = self.accounted_latency(flush = True)
185	if (total_flush_latency != 0):
186	self.assertEqual(total_flush_latency, stats['flush_total_time_ns'])
187	self.assertEqual(op_latency, timed_stats['min_flush_latency_ns'])
188	self.assertEqual(op_latency, timed_stats['max_flush_latency_ns'])
189	self.assertEqual(op_latency, timed_stats['avg_flush_latency_ns'])
190	else:
191	self.assertEqual(0, stats['flush_total_time_ns'])
192	self.assertEqual(0, timed_stats['min_flush_latency_ns'])
193	self.assertEqual(0, timed_stats['max_flush_latency_ns'])
194	self.assertEqual(0, timed_stats['avg_flush_latency_ns'])
195
196	# min flush latency <= avg flush latency <= max flush latency
197	self.assertLessEqual(timed_stats['min_flush_latency_ns'],
198	timed_stats['avg_flush_latency_ns'])
199	self.assertLessEqual(timed_stats['avg_flush_latency_ns'],
200	timed_stats['max_flush_latency_ns'])
201
202	# idle_time_ns must be > 0 if we have performed any operation
203	if (self.accounted_ops(read = True, write = True, flush = True) != 0):
204	self.assertLess(0, stats['idle_time_ns'])
205	else:
206	self.assertFalse(stats.has_key('idle_time_ns'))
207
208	# This test does not alter these, so they must be all 0
209	self.assertEqual(0, stats['rd_merged'])
210	self.assertEqual(0, stats['failed_flush_operations'])
211	self.assertEqual(0, stats['invalid_flush_operations'])
212
213	def do_test_stats(self, rd_size = 0, rd_ops = 0, wr_size = 0, wr_ops = 0,
214	flush_ops = 0, invalid_rd_ops = 0, invalid_wr_ops = 0,
215	failed_rd_ops = 0, failed_wr_ops = 0, wr_merged = 0):
216	# The 'ops' list will contain all the requested I/O operations
217	ops = []
218	for i in range(rd_ops):
219	ops.append("aio_read %d %d" % (i * rd_size, rd_size))
220
221	for i in range(wr_ops):
222	ops.append("aio_write %d %d" % (i * wr_size, wr_size))
223
224	for i in range(flush_ops):
225	ops.append("aio_flush")
226
227	highest_offset = wr_ops * wr_size
228
37546ff2 EB	229	for i in range(invalid_rd_ops):
37546ff2 EB	230	ops.append("aio_read -i 0 512")
4214face	231
37546ff2 EB	232	for i in range(invalid_wr_ops):
37546ff2 EB	233	ops.append("aio_write -i 0 512")
4214face AG	234
	235	for i in range(failed_rd_ops):
	236	ops.append("aio_read %d 512" % bad_offset)
	237
	238	for i in range(failed_wr_ops):
	239	ops.append("aio_write %d 512" % bad_offset)
	240
	241	if failed_wr_ops > 0:
	242	highest_offset = max(highest_offset, bad_offset + 512)
	243
4214face AG	244	# Now perform all operations
	245	for op in ops:
	246	self.vm.hmp_qemu_io("drive0", op)
	247
	248	# Update the expected totals
	249	self.total_rd_bytes += rd_ops * rd_size
	250	self.total_rd_ops += rd_ops
	251	self.total_wr_bytes += wr_ops * wr_size
	252	self.total_wr_ops += wr_ops
	253	self.total_wr_merged += wr_merged
	254	self.total_flush_ops += flush_ops
	255	self.invalid_rd_ops += invalid_rd_ops
	256	self.invalid_wr_ops += invalid_wr_ops
	257	self.failed_rd_ops += failed_rd_ops
	258	self.failed_wr_ops += failed_wr_ops
	259
	260	self.wr_highest_offset = max(self.wr_highest_offset, highest_offset)
	261
	262	# Advance the clock so idle_time_ns has a meaningful value
	263	self.vm.qtest("clock_step %d" % nsec_per_sec)
	264
	265	# And check that the actual statistics match the expected ones
	266	self.check_values()
	267
	268	def test_read_only(self):
	269	test_values = [[512, 1],
	270	[65536, 1],
	271	[512, 12],
	272	[65536, 12]]
	273	for i in test_values:
	274	self.do_test_stats(rd_size = i[0], rd_ops = i[1])
	275
	276	def test_write_only(self):
	277	test_values = [[512, 1],
	278	[65536, 1],
	279	[512, 12],
	280	[65536, 12]]
	281	for i in test_values:
	282	self.do_test_stats(wr_size = i[0], wr_ops = i[1])
	283
	284	def test_invalid(self):
	285	self.do_test_stats(invalid_rd_ops = 7)
	286	self.do_test_stats(invalid_wr_ops = 3)
	287	self.do_test_stats(invalid_rd_ops = 4, invalid_wr_ops = 5)
	288
	289	def test_failed(self):
	290	self.do_test_stats(failed_rd_ops = 8)
	291	self.do_test_stats(failed_wr_ops = 6)
	292	self.do_test_stats(failed_rd_ops = 5, failed_wr_ops = 12)
	293
	294	def test_flush(self):
	295	self.do_test_stats(flush_ops = 8)
	296
4214face AG	297	def test_all(self):
	298	# rd_size, rd_ops, wr_size, wr_ops, flush_ops
	299	# invalid_rd_ops, invalid_wr_ops,
	300	# failed_rd_ops, failed_wr_ops
	301	# wr_merged
91c6e4b7 KW	302	test_values = [[512, 1, 512, 1, 1, 4, 7, 5, 2, 0],
	303	[65536, 1, 2048, 12, 7, 7, 5, 2, 5, 0],
	304	[32768, 9, 8192, 1, 4, 3, 2, 4, 6, 0],
	305	[16384, 11, 3584, 16, 9, 8, 6, 7, 3, 0]]
4214face AG	306	for i in test_values:
	307	self.do_test_stats(*i)
	308
	309	def test_no_op(self):
	310	# All values must be sane before doing any I/O
	311	self.check_values()
	312
	313
	314	class BlockDeviceStatsTestAccountInvalid(BlockDeviceStatsTestCase):
	315	account_invalid = True
	316	account_failed = False
	317
	318	class BlockDeviceStatsTestAccountFailed(BlockDeviceStatsTestCase):
	319	account_invalid = False
	320	account_failed = True
	321
	322	class BlockDeviceStatsTestAccountBoth(BlockDeviceStatsTestCase):
	323	account_invalid = True
	324	account_failed = True
	325
	326	class BlockDeviceStatsTestCoroutine(BlockDeviceStatsTestCase):
	327	test_img = "null-co://"
	328
	329	if __name__ == '__main__':
	330	iotests.main(supported_fmts=["raw"])