mirror of
https://github.com/Motorhead1991/qemu.git
synced 2025-07-31 06:13:53 -06:00
b6aed193e5
In many cases we just want an effect of qmp command and want to raise
on failure. Use vm.cmd() method which does exactly this.
The commit is generated by command
git grep -l '\.qmp(' | xargs ./scripts/python_qmp_updater.py
And then, fix self.assertRaises to expect ExecuteError exception in
tests/qemu-iotests/124
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 20231006154125.1068348-16-vsementsov@yandex-team.ru
Signed-off-by: John Snow <jsnow@redhat.com>
311 lines
9.5 KiB
Python
Executable file
311 lines
9.5 KiB
Python
Executable file
#!/usr/bin/env python3
|
|
# group: rw quick
|
|
#
|
|
# This test covers the basic fleecing workflow, which provides a
|
|
# point-in-time snapshot of a node that can be queried over NBD.
|
|
#
|
|
# Copyright (C) 2018 Red Hat, Inc.
|
|
# John helped, too.
|
|
#
|
|
# 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/>.
|
|
#
|
|
# Creator/Owner: John Snow <jsnow@redhat.com>
|
|
|
|
from subprocess import CalledProcessError
|
|
|
|
import iotests
|
|
from iotests import log, qemu_img, qemu_io
|
|
|
|
iotests.script_initialize(
|
|
supported_fmts=['qcow2'],
|
|
supported_platforms=['linux'],
|
|
required_fmts=['copy-before-write'],
|
|
unsupported_imgopts=['compat']
|
|
)
|
|
|
|
patterns = [('0x5d', '0', '64k'),
|
|
('0xd5', '1M', '64k'),
|
|
('0xdc', '32M', '64k'),
|
|
('0xcd', '0x3ff0000', '64k')] # 64M - 64K
|
|
|
|
overwrite = [('0xab', '0', '64k'), # Full overwrite
|
|
('0xad', '0x00f8000', '64k'), # Partial-left (1M-32K)
|
|
('0x1d', '0x2008000', '64k'), # Partial-right (32M+32K)
|
|
('0xea', '0x3fe0000', '64k')] # Adjacent-left (64M - 128K)
|
|
|
|
zeroes = [('0', '0x00f8000', '32k'), # Left-end of partial-left (1M-32K)
|
|
('0', '0x2010000', '32k'), # Right-end of partial-right (32M+64K)
|
|
('0', '0x3fe0000', '64k')] # overwrite[3]
|
|
|
|
remainder = [('0xd5', '0x108000', '32k'), # Right-end of partial-left [1]
|
|
('0xdc', '32M', '32k'), # Left-end of partial-right [2]
|
|
('0xcd', '0x3ff0000', '64k')] # patterns[3]
|
|
|
|
def do_test(vm, use_cbw, use_snapshot_access_filter, base_img_path,
|
|
fleece_img_path, nbd_sock_path=None,
|
|
target_img_path=None,
|
|
bitmap=False):
|
|
push_backup = target_img_path is not None
|
|
assert (nbd_sock_path is not None) != push_backup
|
|
if push_backup:
|
|
assert use_cbw
|
|
|
|
log('--- Setting up images ---')
|
|
log('')
|
|
|
|
qemu_img('create', '-f', iotests.imgfmt, base_img_path, '64M')
|
|
if bitmap:
|
|
qemu_img('bitmap', '--add', base_img_path, 'bitmap0')
|
|
|
|
if use_snapshot_access_filter:
|
|
assert use_cbw
|
|
qemu_img('create', '-f', 'raw', fleece_img_path, '64M')
|
|
else:
|
|
qemu_img('create', '-f', 'qcow2', fleece_img_path, '64M')
|
|
|
|
if push_backup:
|
|
qemu_img('create', '-f', 'qcow2', target_img_path, '64M')
|
|
|
|
for p in patterns:
|
|
qemu_io('-f', iotests.imgfmt,
|
|
'-c', 'write -P%s %s %s' % p, base_img_path)
|
|
|
|
log('Done')
|
|
|
|
log('')
|
|
log('--- Launching VM ---')
|
|
log('')
|
|
|
|
src_node = 'source'
|
|
tmp_node = 'temp'
|
|
qom_path = '/machine/peripheral/sda'
|
|
vm.add_blockdev(f'driver={iotests.imgfmt},file.driver=file,'
|
|
f'file.filename={base_img_path},node-name={src_node}')
|
|
vm.add_device('virtio-scsi')
|
|
vm.add_device(f'scsi-hd,id=sda,drive={src_node}')
|
|
vm.launch()
|
|
log('Done')
|
|
|
|
log('')
|
|
log('--- Setting up Fleecing Graph ---')
|
|
log('')
|
|
|
|
|
|
if use_snapshot_access_filter:
|
|
log(vm.qmp('blockdev-add', {
|
|
'node-name': tmp_node,
|
|
'driver': 'file',
|
|
'filename': fleece_img_path,
|
|
}))
|
|
else:
|
|
# create tmp_node backed by src_node
|
|
log(vm.qmp('blockdev-add', {
|
|
'driver': 'qcow2',
|
|
'node-name': tmp_node,
|
|
'file': {
|
|
'driver': 'file',
|
|
'filename': fleece_img_path,
|
|
},
|
|
'backing': src_node,
|
|
}))
|
|
|
|
# Establish CBW from source to fleecing node
|
|
if use_cbw:
|
|
fl_cbw = {
|
|
'driver': 'copy-before-write',
|
|
'node-name': 'fl-cbw',
|
|
'file': src_node,
|
|
'target': tmp_node
|
|
}
|
|
|
|
if bitmap:
|
|
fl_cbw['bitmap'] = {'node': src_node, 'name': 'bitmap0'}
|
|
|
|
log(vm.qmp('blockdev-add', fl_cbw))
|
|
|
|
log(vm.qmp('qom-set', path=qom_path, property='drive', value='fl-cbw'))
|
|
|
|
if use_snapshot_access_filter:
|
|
log(vm.qmp('blockdev-add', {
|
|
'driver': 'snapshot-access',
|
|
'node-name': 'fl-access',
|
|
'file': 'fl-cbw',
|
|
}))
|
|
else:
|
|
log(vm.qmp('blockdev-backup',
|
|
job_id='fleecing',
|
|
device=src_node,
|
|
target=tmp_node,
|
|
sync='none'))
|
|
|
|
export_node = 'fl-access' if use_snapshot_access_filter else tmp_node
|
|
|
|
if push_backup:
|
|
log('')
|
|
log('--- Starting actual backup ---')
|
|
log('')
|
|
|
|
log(vm.qmp('blockdev-add', **{
|
|
'driver': iotests.imgfmt,
|
|
'node-name': 'target',
|
|
'file': {
|
|
'driver': 'file',
|
|
'filename': target_img_path
|
|
}
|
|
}))
|
|
log(vm.qmp('blockdev-backup', device=export_node,
|
|
sync='full', target='target',
|
|
job_id='push-backup', speed=1))
|
|
else:
|
|
log('')
|
|
log('--- Setting up NBD Export ---')
|
|
log('')
|
|
|
|
nbd_uri = 'nbd+unix:///%s?socket=%s' % (export_node, nbd_sock_path)
|
|
log(vm.qmp('nbd-server-start',
|
|
{'addr': { 'type': 'unix',
|
|
'data': { 'path': nbd_sock_path } } }))
|
|
|
|
log(vm.qmp('nbd-server-add', device=export_node))
|
|
|
|
log('')
|
|
log('--- Sanity Check ---')
|
|
log('')
|
|
|
|
for p in patterns + zeroes:
|
|
cmd = 'read -P%s %s %s' % p
|
|
log(cmd)
|
|
|
|
try:
|
|
qemu_io('-r', '-f', 'raw', '-c', cmd, nbd_uri)
|
|
except CalledProcessError as exc:
|
|
if bitmap and p in zeroes:
|
|
log(exc.stdout)
|
|
else:
|
|
raise
|
|
|
|
log('')
|
|
log('--- Testing COW ---')
|
|
log('')
|
|
|
|
for p in overwrite:
|
|
cmd = 'write -P%s %s %s' % p
|
|
log(cmd)
|
|
log(vm.hmp_qemu_io(qom_path, cmd, qdev=True))
|
|
|
|
if push_backup:
|
|
# Check that previous operations were done during backup, not after
|
|
# If backup is already finished, it's possible that it was finished
|
|
# even before hmp qemu_io write, and we didn't actually test
|
|
# copy-before-write operation. This should not happen, as we use
|
|
# speed=1. But worth checking.
|
|
result = vm.qmp('query-block-jobs')
|
|
assert len(result['return']) == 1
|
|
|
|
vm.cmd('block-job-set-speed', device='push-backup', speed=0)
|
|
|
|
log(vm.event_wait(name='BLOCK_JOB_COMPLETED',
|
|
match={'data': {'device': 'push-backup'}}),
|
|
filters=[iotests.filter_qmp_event])
|
|
log(vm.qmp('blockdev-del', node_name='target'))
|
|
|
|
log('')
|
|
log('--- Verifying Data ---')
|
|
log('')
|
|
|
|
for p in patterns + zeroes:
|
|
cmd = 'read -P%s %s %s' % p
|
|
log(cmd)
|
|
args = ['-r', '-c', cmd]
|
|
if push_backup:
|
|
args += [target_img_path]
|
|
else:
|
|
args += ['-f', 'raw', nbd_uri]
|
|
|
|
try:
|
|
qemu_io(*args)
|
|
except CalledProcessError as exc:
|
|
if bitmap and p in zeroes:
|
|
log(exc.stdout)
|
|
else:
|
|
raise
|
|
|
|
log('')
|
|
log('--- Cleanup ---')
|
|
log('')
|
|
|
|
if not push_backup:
|
|
log(vm.qmp('nbd-server-stop'))
|
|
|
|
if use_cbw:
|
|
if use_snapshot_access_filter:
|
|
log(vm.qmp('blockdev-del', node_name='fl-access'))
|
|
log(vm.qmp('qom-set', path=qom_path, property='drive', value=src_node))
|
|
log(vm.qmp('blockdev-del', node_name='fl-cbw'))
|
|
else:
|
|
log(vm.qmp('block-job-cancel', device='fleecing'))
|
|
e = vm.event_wait('BLOCK_JOB_CANCELLED')
|
|
assert e is not None
|
|
log(e, filters=[iotests.filter_qmp_event])
|
|
|
|
log(vm.qmp('blockdev-del', node_name=tmp_node))
|
|
vm.shutdown()
|
|
|
|
log('')
|
|
log('--- Confirming writes ---')
|
|
log('')
|
|
|
|
for p in overwrite + remainder:
|
|
cmd = 'read -P%s %s %s' % p
|
|
log(cmd)
|
|
qemu_io(base_img_path, '-c', cmd)
|
|
|
|
log('')
|
|
log('Done')
|
|
|
|
|
|
def test(use_cbw, use_snapshot_access_filter,
|
|
nbd_sock_path=None, target_img_path=None, bitmap=False):
|
|
with iotests.FilePath('base.img') as base_img_path, \
|
|
iotests.FilePath('fleece.img') as fleece_img_path, \
|
|
iotests.VM() as vm:
|
|
do_test(vm, use_cbw, use_snapshot_access_filter, base_img_path,
|
|
fleece_img_path, nbd_sock_path, target_img_path,
|
|
bitmap=bitmap)
|
|
|
|
def test_pull(use_cbw, use_snapshot_access_filter, bitmap=False):
|
|
with iotests.FilePath('nbd.sock',
|
|
base_dir=iotests.sock_dir) as nbd_sock_path:
|
|
test(use_cbw, use_snapshot_access_filter, nbd_sock_path, None,
|
|
bitmap=bitmap)
|
|
|
|
def test_push():
|
|
with iotests.FilePath('target.img') as target_img_path:
|
|
test(True, True, None, target_img_path)
|
|
|
|
|
|
log('=== Test backup(sync=none) based fleecing ===\n')
|
|
test_pull(False, False)
|
|
|
|
log('=== Test cbw-filter based fleecing ===\n')
|
|
test_pull(True, False)
|
|
|
|
log('=== Test fleecing-format based fleecing ===\n')
|
|
test_pull(True, True)
|
|
|
|
log('=== Test fleecing-format based fleecing with bitmap ===\n')
|
|
test_pull(True, True, bitmap=True)
|
|
|
|
log('=== Test push backup with fleecing ===\n')
|
|
test_push()
|