980448f17a
234 implements functions that are useful for doing migration between two VMs. Move them to iotests.py so that other test cases can use them, too. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
110 lines
4.4 KiB
Python
Executable file
110 lines
4.4 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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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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vm_a.enable_migration_events('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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vm_b.enable_migration_events('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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vm_a.wait_migration()
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# Wait for the destination second (which does not)
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vm_b.wait_migration()
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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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vm_a.enable_migration_events('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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vm_b.wait_migration()
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# Wait for the destination second (which does not)
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vm_a.wait_migration()
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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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