9a378495c3
This test waits for a MIGRATION event with status=completed on the source VM before querying the migration status on both source and destination. However, just because the source says migration has completed does not mean the destination thinks the same. Therefore, in some cases, the destination VM may still report "active" instead of "completed" when asked for its migration status. Fix this by enabling migration events on both VMs and waiting until both source and destination emit a status=completed MIGRATION event. Signed-off-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
126 lines
4.8 KiB
Python
Executable file
126 lines
4.8 KiB
Python
Executable file
#!/usr/bin/env python
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#
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# Copyright (C) 2018 Red Hat, Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# Creator/Owner: Kevin Wolf <kwolf@redhat.com>
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#
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# Check that block node activation and inactivation works with a block graph
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# that is built with individually created nodes
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import iotests
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import os
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iotests.verify_image_format(supported_fmts=['qcow2'])
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iotests.verify_platform(['linux'])
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def enable_migration_events(vm, name):
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iotests.log('Enabling migration QMP events on %s...' % name)
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iotests.log(vm.qmp('migrate-set-capabilities', capabilities=[
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{
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'capability': 'events',
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'state': True
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}
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]))
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def wait_migration(vm):
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while True:
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event = vm.event_wait('MIGRATION')
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iotests.log(event, filters=[iotests.filter_qmp_event])
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if event['data']['status'] == 'completed':
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break
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with iotests.FilePath('img') as img_path, \
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iotests.FilePath('backing') as backing_path, \
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iotests.FilePath('mig_fifo_a') as fifo_a, \
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iotests.FilePath('mig_fifo_b') as fifo_b, \
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iotests.VM(path_suffix='a') as vm_a, \
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iotests.VM(path_suffix='b') as vm_b:
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iotests.qemu_img_pipe('create', '-f', iotests.imgfmt, backing_path, '64M')
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iotests.qemu_img_pipe('create', '-f', iotests.imgfmt, img_path, '64M')
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os.mkfifo(fifo_a)
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os.mkfifo(fifo_b)
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iotests.log('Launching source VM...')
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(vm_a.add_blockdev('file,filename=%s,node-name=drive0-file' % (img_path))
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.add_blockdev('%s,file=drive0-file,node-name=drive0' % (iotests.imgfmt))
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.add_blockdev('file,filename=%s,node-name=drive0-backing-file' % (backing_path))
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.add_blockdev('%s,file=drive0-backing-file,node-name=drive0-backing' % (iotests.imgfmt))
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.launch())
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enable_migration_events(vm_a, 'A')
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iotests.log('Launching destination VM...')
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(vm_b.add_blockdev('file,filename=%s,node-name=drive0-file' % (img_path))
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.add_blockdev('%s,file=drive0-file,node-name=drive0' % (iotests.imgfmt))
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.add_blockdev('file,filename=%s,node-name=drive0-backing-file' % (backing_path))
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.add_blockdev('%s,file=drive0-backing-file,node-name=drive0-backing' % (iotests.imgfmt))
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.add_incoming("exec: cat '%s'" % (fifo_a))
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.launch())
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enable_migration_events(vm_b, 'B')
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# Add a child node that was created after the parent node. The reverse case
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# is covered by the -blockdev options above.
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iotests.log(vm_a.qmp('blockdev-snapshot', node='drive0-backing',
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overlay='drive0'))
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iotests.log(vm_b.qmp('blockdev-snapshot', node='drive0-backing',
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overlay='drive0'))
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iotests.log('Starting migration to B...')
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iotests.log(vm_a.qmp('migrate', uri='exec:cat >%s' % (fifo_a)))
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with iotests.Timeout(3, 'Migration does not complete'):
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# Wait for the source first (which includes setup=setup)
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wait_migration(vm_a)
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# Wait for the destination second (which does not)
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wait_migration(vm_b)
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iotests.log(vm_a.qmp('query-migrate')['return']['status'])
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iotests.log(vm_b.qmp('query-migrate')['return']['status'])
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iotests.log(vm_a.qmp('query-status'))
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iotests.log(vm_b.qmp('query-status'))
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iotests.log('Add a second parent to drive0-file...')
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iotests.log(vm_b.qmp('blockdev-add', driver='raw', file='drive0-file',
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node_name='drive0-raw'))
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iotests.log('Restart A with -incoming and second parent...')
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vm_a.shutdown()
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(vm_a.add_blockdev('raw,file=drive0-file,node-name=drive0-raw')
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.add_incoming("exec: cat '%s'" % (fifo_b))
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.launch())
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enable_migration_events(vm_a, 'A')
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iotests.log(vm_a.qmp('blockdev-snapshot', node='drive0-backing',
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overlay='drive0'))
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iotests.log('Starting migration back to A...')
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iotests.log(vm_b.qmp('migrate', uri='exec:cat >%s' % (fifo_b)))
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with iotests.Timeout(3, 'Migration does not complete'):
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# Wait for the source first (which includes setup=setup)
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wait_migration(vm_b)
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# Wait for the destination second (which does not)
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wait_migration(vm_a)
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iotests.log(vm_a.qmp('query-migrate')['return']['status'])
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iotests.log(vm_b.qmp('query-migrate')['return']['status'])
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iotests.log(vm_a.qmp('query-status'))
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iotests.log(vm_b.qmp('query-status'))
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