Commit 44a8174e authored by Stefan Hajnoczi's avatar Stefan Hajnoczi Committed by Eric Blake
Browse files

iotests: add 208 nbd-server + blockdev-snapshot-sync test case 



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: default avatarStefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20180306204819.11266-3-stefanha@redhat.com>
Reviewed-by: default avatarMax Reitz <mreitz@redhat.com>
Signed-off-by: default avatarEric Blake <eblake@redhat.com>
parent d03654ea

tests/qemu-iotests/208

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#!/usr/bin/env python

#

# Copyright (C) 2018 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>

#

# Check that the runtime NBD server does not crash when stopped after

# blockdev-snapshot-sync.



import iotests



with iotests.FilePath('disk.img') as disk_img_path, \

     iotests.FilePath('disk-snapshot.img') as disk_snapshot_img_path, \

     iotests.FilePath('nbd.sock') as nbd_sock_path, \

     iotests.VM() as vm:



    img_size = '10M'

    iotests.qemu_img_pipe('create', '-f', iotests.imgfmt, disk_img_path, img_size)



    iotests.log('Launching VM...')

    (vm.add_drive(disk_img_path, 'node-name=drive0-node', interface='none')

       .launch())



    iotests.log('Starting NBD server...')

    iotests.log(vm.qmp('nbd-server-start', addr={

            "type": "unix",

            "data": {

                "path": nbd_sock_path,

            }

        }))



    iotests.log('Adding NBD export...')

    iotests.log(vm.qmp('nbd-server-add', device='drive0-node', writable=True))



    iotests.log('Creating external snapshot...')

    iotests.log(vm.qmp('blockdev-snapshot-sync',

        node_name='drive0-node',

        snapshot_node_name='drive0-snapshot-node',

        snapshot_file=disk_snapshot_img_path))



    iotests.log('Stopping NBD server...')

    iotests.log(vm.qmp('nbd-server-stop'))

tests/qemu-iotests/208.out

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Launching VM...

Starting NBD server...

{u'return': {}}

Adding NBD export...

{u'return': {}}

Creating external snapshot...

{u'return': {}}

Stopping NBD server...

{u'return': {}}

tests/qemu-iotests/group

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@@ -204,3 +204,4 @@ 
205 rw auto quick

206 rw auto

207 rw auto

208 rw auto quick