Commit 12314f2d authored by Stefan Hajnoczi's avatar Stefan Hajnoczi Committed by Eric Blake
Browse files

qemu-iotests: add 194 non-shared storage migration test



Non-shared storage migration with NBD and drive-mirror is currently not
tested by qemu-iotests.  This test case covers the basic migration
scenario.

Signed-off-by: default avatarStefan Hajnoczi <stefanha@redhat.com>
Based-on: <20170823134242.12080-1-famz@redhat.com>
Message-Id: <20170823140506.28723-1-stefanha@redhat.com>
Tested-by: default avatarEric Blake <eblake@redhat.com>
Signed-off-by: default avatarEric Blake <eblake@redhat.com>
parent 7d5b5261
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tests/qemu-iotests/194

0 → 100755
+73 −0
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#!/usr/bin/env python
#
# Copyright (C) 2017 Red Hat, Inc.
#
# 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: Stefan Hajnoczi <stefanha@redhat.com>
#
# Non-shared storage migration test using NBD server and drive-mirror

import os
import atexit
import iotests

iotests.verify_platform(['linux'])

img_size = '1G'
source_img_path = os.path.join(iotests.test_dir, 'source.img')
dest_img_path = os.path.join(iotests.test_dir, 'dest.img')
iotests.qemu_img_pipe('create', '-f', iotests.imgfmt, source_img_path, img_size)
iotests.qemu_img_pipe('create', '-f', iotests.imgfmt, dest_img_path, img_size)

iotests.log('Launching VMs...')
migration_sock_path = os.path.join(iotests.test_dir, 'migration.sock')
nbd_sock_path = os.path.join(iotests.test_dir, 'nbd.sock')
source_vm = iotests.VM('source').add_drive(source_img_path)
dest_vm = (iotests.VM('dest').add_drive(dest_img_path)
                             .add_incoming('unix:{0}'.format(migration_sock_path)))
source_vm.launch()
atexit.register(source_vm.shutdown)
dest_vm.launch()
atexit.register(dest_vm.shutdown)

iotests.log('Launching NBD server on destination...')
iotests.log(dest_vm.qmp('nbd-server-start', addr={'type': 'unix', 'data': {'path': nbd_sock_path}}))
iotests.log(dest_vm.qmp('nbd-server-add', device='drive0', writable=True))

iotests.log('Starting drive-mirror on source...')
iotests.log(source_vm.qmp(
              'drive-mirror',
              device='drive0',
              target='nbd+unix:///drive0?socket={0}'.format(nbd_sock_path),
              sync='full',
              format='raw', # always raw, the server handles the format
              mode='existing'))

iotests.log('Waiting for drive-mirror to complete...')
iotests.log(source_vm.event_wait('BLOCK_JOB_READY'),
            filters=[iotests.filter_qmp_event])

iotests.log('Starting migration...')
source_vm.qmp('migrate-set-capabilities',
              capabilities=[{'capability': 'events', 'state': True}])
dest_vm.qmp('migrate-set-capabilities',
            capabilities=[{'capability': 'events', 'state': True}])
iotests.log(source_vm.qmp('migrate', uri='unix:{0}'.format(migration_sock_path)))

while True:
    event = source_vm.event_wait('MIGRATION')
    iotests.log(event, filters=[iotests.filter_qmp_event])
    if event['data']['status'] in ('completed', 'failed'):
        break
+13 −0
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Launching VMs...
Launching NBD server on destination...
{u'return': {}}
{u'return': {}}
Starting drive-mirror on source...
{u'return': {}}
Waiting for drive-mirror to complete...
{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'device': u'drive0', u'type': u'mirror', u'speed': 0, u'len': 1073741824, u'offset': 1073741824}, u'event': u'BLOCK_JOB_READY'}
Starting migration...
{u'return': {}}
{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'setup'}, u'event': u'MIGRATION'}
{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'active'}, u'event': u'MIGRATION'}
{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'completed'}, u'event': u'MIGRATION'}
+1 −0
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@@ -187,3 +187,4 @@
189 rw auto
190 rw auto quick
192 rw auto quick
194 rw auto migration quick
+13 −0
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@@ -133,6 +133,14 @@ chown_re = re.compile(r"chown [0-9]+:[0-9]+")
def filter_chown(msg):
    return chown_re.sub("chown UID:GID", msg)

def filter_qmp_event(event):
    '''Filter a QMP event dict'''
    event = dict(event)
    if 'timestamp' in event:
        event['timestamp']['seconds'] = 'SECS'
        event['timestamp']['microseconds'] = 'USECS'
    return event

def log(msg, filters=[]):
    for flt in filters:
        msg = flt(msg)
@@ -200,6 +208,11 @@ class VM(qtest.QEMUQtestMachine):
            self._args.append(','.join(opts))
        return self

    def add_incoming(self, addr):
        self._args.append('-incoming')
        self._args.append(addr)
        return self

    def pause_drive(self, drive, event=None):
        '''Pause drive r/w operations'''
        if not event: