44a8174e0a
This test case adds an NBD server export and then invokes blockdev-snapshot-sync, which changes the BlockDriverState node that the NBD server's BlockBackend points to. This is an interesting scenario to test and exercises the code path fixed by the previous commit. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Message-Id: <20180306204819.11266-3-stefanha@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Eric Blake <eblake@redhat.com>
56 lines
1.9 KiB
Python
Executable File
56 lines
1.9 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: Stefan Hajnoczi <stefanha@redhat.com>
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#
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# Check that the runtime NBD server does not crash when stopped after
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# blockdev-snapshot-sync.
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import iotests
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with iotests.FilePath('disk.img') as disk_img_path, \
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iotests.FilePath('disk-snapshot.img') as disk_snapshot_img_path, \
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iotests.FilePath('nbd.sock') as nbd_sock_path, \
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iotests.VM() as vm:
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img_size = '10M'
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iotests.qemu_img_pipe('create', '-f', iotests.imgfmt, disk_img_path, img_size)
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iotests.log('Launching VM...')
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(vm.add_drive(disk_img_path, 'node-name=drive0-node', interface='none')
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.launch())
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iotests.log('Starting NBD server...')
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iotests.log(vm.qmp('nbd-server-start', addr={
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"type": "unix",
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"data": {
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"path": nbd_sock_path,
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}
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}))
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iotests.log('Adding NBD export...')
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iotests.log(vm.qmp('nbd-server-add', device='drive0-node', writable=True))
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iotests.log('Creating external snapshot...')
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iotests.log(vm.qmp('blockdev-snapshot-sync',
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node_name='drive0-node',
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snapshot_node_name='drive0-snapshot-node',
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snapshot_file=disk_snapshot_img_path))
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iotests.log('Stopping NBD server...')
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iotests.log(vm.qmp('nbd-server-stop'))
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