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qemu/tests/qemu-iotests/030
Vladimir Sementsov-Ogievskiy e2c5093c99 iotests: 30: drop from auto group (and effectively from make check) 
I reproduced the following crash fast enough:

0  raise () at /lib64/libc.so.6
1  abort () at /lib64/libc.so.6
2  _nl_load_domain.cold () at /lib64/libc.so.6
3  annobin_assert.c_end () at /lib64/libc.so.6
4  bdrv_reopen_multiple (bs_queue=0x55de75fa9b70, errp=0x0)
   at ../block.c:3820
5  bdrv_reopen_set_read_only (bs=0x55de760fc020, read_only=true,
   errp=0x0) at ../block.c:3870
6  stream_clean (job=0x55de75fa9410) at ../block/stream.c:99
7  job_clean (job=0x55de75fa9410) at ../job.c:680
8  job_finalize_single (job=0x55de75fa9410) at ../job.c:696
9  job_txn_apply (job=0x55de75fa9410,
   fn=0x55de741eee27 <job_finalize_single>) at ../job.c:158
10 job_do_finalize (job=0x55de75fa9410) at ../job.c:805
11 job_completed_txn_success (job=0x55de75fa9410) at ../job.c:855
12 job_completed (job=0x55de75fa9410) at ../job.c:868
13 job_exit (opaque=0x55de75fa9410) at ../job.c:888
14 aio_bh_call (bh=0x55de76b9b4e0) at ../util/async.c:136
15 aio_bh_poll (ctx=0x55de75bc5300) at ../util/async.c:164
16 aio_dispatch (ctx=0x55de75bc5300) at ../util/aio-posix.c:381
17 aio_ctx_dispatch (source=0x55de75bc5300, callback=0x0,
   user_data=0x0) at ../util/async.c:306
18 g_main_context_dispatch () at /lib64/libglib-2.0.so.0
19 glib_pollfds_poll () at ../util/main-loop.c:232
20 os_host_main_loop_wait (timeout=0) at ../util/main-loop.c:255
21 main_loop_wait (nonblocking=0) at ../util/main-loop.c:531
22 qemu_main_loop () at ../softmmu/runstate.c:722
23 main (argc=20, argv=0x7ffe218f0268, envp=0x7ffe218f0310) at
   ../softmmu/main.c:50

(gdb) fr 4
4  bdrv_reopen_multiple (bs_queue=0x55de75fa9b70, errp=0x0) at
      ../block.c:3820
3820                assert(perm == state->perm);
(gdb) list
3815
3816            if (ret == 0) {
3817                uint64_t perm, shared;
3818
3819                bdrv_get_cumulative_perm(state->bs, &perm,
                    &shared);
3820                assert(perm == state->perm);
3821                assert(shared == state->shared_perm);
3822
3823                bdrv_set_perm(state->bs);
3824            } else {
(gdb) p perm
$1 = 1
(gdb) p state->perm
$2 = 0

Then I had 38 successful iterations and another crash:
0  bdrv_check_update_perm (bs=0x5631ac97bc50, q=0x0, new_used_perm=1,
   new_shared_perm=31, ignore_children=0x0, errp=0x7ffd9d477cf8) at
   ../block.c:2197
1  bdrv_root_attach_child
    (child_bs=0x5631ac97bc50, child_name=0x5631aaf6b1f9 "backing",
    child_class=0x5631ab280ca0 <child_of_bds>, child_role=8,
    ctx=0x5631ab757300, perm=1, shared_perm=31, opaque=0x5631abb8c020,
    errp=0x7ffd9d477cf8)
    at ../block.c:2642
2  bdrv_attach_child (parent_bs=0x5631abb8c020,
   child_bs=0x5631ac97bc50, child_name=0x5631aaf6b1f9 "backing",
   child_class=0x5631ab280ca0 <child_of_bds>, child_role=8,
   errp=0x7ffd9d477cf8)
    at ../block.c:2719
3  bdrv_set_backing_hd (bs=0x5631abb8c020, backing_hd=0x5631ac97bc50,
   errp=0x7ffd9d477cf8) at ../block.c:2854
4  stream_prepare (job=0x5631ac751eb0) at ../block/stream.c:74
5  job_prepare (job=0x5631ac751eb0) at ../job.c:784
6  job_txn_apply (job=0x5631ac751eb0, fn=0x5631aacb1156 <job_prepare>)
   at ../job.c:158
7  job_do_finalize (job=0x5631ac751eb0) at ../job.c:801
8  job_completed_txn_success (job=0x5631ac751eb0) at ../job.c:855
9  job_completed (job=0x5631ac751eb0) at ../job.c:868
10 job_exit (opaque=0x5631ac751eb0) at ../job.c:888
11 aio_bh_call (bh=0x7f3d9c007680) at ../util/async.c:136
12 aio_bh_poll (ctx=0x5631ab757300) at ../util/async.c:164
13 aio_dispatch (ctx=0x5631ab757300) at ../util/aio-posix.c:381
14 aio_ctx_dispatch (source=0x5631ab757300, callback=0x0,
   user_data=0x0) at ../util/async.c:306
15 g_main_context_dispatch () at /lib64/libglib-2.0.so.0
16 glib_pollfds_poll () at ../util/main-loop.c:232
17 os_host_main_loop_wait (timeout=0) at ../util/main-loop.c:255
18 main_loop_wait (nonblocking=0) at ../util/main-loop.c:531
19 qemu_main_loop () at ../softmmu/runstate.c:722
20 main (argc=20, argv=0x7ffd9d478198, envp=0x7ffd9d478240) at
   ../softmmu/main.c:50
(gdb) list
2192        QLIST_FOREACH(c, &bs->parents, next_parent) {
2193            if (g_slist_find(ignore_children, c)) {
2194                continue;
2195            }
2196
2197            if ((new_used_perm & c->shared_perm) != new_used_perm)
                {
2198                char *user = bdrv_child_user_desc(c);
2199                char *perm_names = bdrv_perm_names(new_used_perm &
                    ~c->shared_perm);
2200
2201                error_setg(errp, "Conflicts with use by %s as '%s',
                    which does not "
(gdb) p c
$1 = (BdrvChild *) 0x8585858585858585

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-id: 20210205111021.715240-1-vsementsov@virtuozzo.com
Reviewed-by: Eric Blake <eblake@redhat.com>
[PMM: trimmed the part of the commit message referring to
as-yet-unapplied patchseries]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-02-05 15:16:13 +00:00

979 lines
41 KiB
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Raw Blame History

#!/usr/bin/env python3
# group: rw backing
#
# 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
import unittest
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,
'-F', 'raw', mid_img)
qemu_img('create', '-f', iotests.imgfmt,
'-o', 'backing_file=%s' % mid_img,
'-F', iotests.imgfmt, test_img)
qemu_io('-f', 'raw', '-c', 'write -P 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],
'-F', 'raw' if i == 1 else iotests.imgfmt, 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
@unittest.skipIf(os.environ.get('QEMU_CHECK_BLOCK_AUTO'), 'disabled in CI')
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, bottom=f'node{i-1}',
speed=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],
filter_node_name='stream-filter', 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 'stream-filter' 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 'stream-filter' 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")
result = self.vm.qmp('block-job-set-speed', device='commit-drive0', speed=0)
self.assert_qmp(result, 'return', {})
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-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)
self.vm.run_job(job='node4', auto_dismiss=True)
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,
'-F', iotests.imgfmt, 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,
'-F', 'raw', 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,
'-F', 'raw', 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,
'-F', 'raw', 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'])
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