Demonstrate new API for filter insertion and removal. Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@xxxxxxxxxxxxx> --- tests/qemu-iotests/tests/filter-insertion | 253 ++++++++++++++++++ tests/qemu-iotests/tests/filter-insertion.out | 5 + 2 files changed, 258 insertions(+) create mode 100755 tests/qemu-iotests/tests/filter-insertion create mode 100644 tests/qemu-iotests/tests/filter-insertion.out diff --git a/tests/qemu-iotests/tests/filter-insertion b/tests/qemu-iotests/tests/filter-insertion new file mode 100755 index 0000000000..4898d6e043 --- /dev/null +++ b/tests/qemu-iotests/tests/filter-insertion @@ -0,0 +1,253 @@ +#!/usr/bin/env python3 +# +# Tests for inserting and removing filters in a block graph. +# +# Copyright (c) 2022 Virtuozzo International GmbH. +# +# 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/>. +# + +import os + +import iotests +from iotests import qemu_img_create, try_remove + + +disk = os.path.join(iotests.test_dir, 'disk') +sock = os.path.join(iotests.sock_dir, 'sock') +size = 1024 * 1024 + + +class TestFilterInsertion(iotests.QMPTestCase): + def setUp(self): + qemu_img_create(disk, str(size)) + + self.vm = iotests.VM() + self.vm.launch() + + self.vm.qmp_check('blockdev-add', { + 'node-name': 'disk0', + 'driver': 'qcow2', + 'file': { + 'node-name': 'file0', + 'driver': 'file', + 'filename': disk + } + }) + + def tearDown(self): + self.vm.shutdown() + os.remove(disk) + try_remove(sock) + + def test_simple_insertion(self): + vm = self.vm + + vm.qmp_check('blockdev-add', { + 'node-name': 'filter', + 'driver': 'preallocate', + 'file': 'file0' + }) + + vm.qmp_check('x-blockdev-replace', { + 'parent-type': 'driver', + 'node-name': 'disk0', + 'child': 'file', + 'new-child': 'filter' + }) + + # Filter inserted: + # disk0 -file-> filter -file-> file0 + vm.assert_edges_list([ + ('disk0', 'file', 'filter'), + ('filter', 'file', 'file0') + ]) + + vm.qmp_check('x-blockdev-replace', { + 'parent-type': 'driver', + 'node-name': 'disk0', + 'child': 'file', + 'new-child': 'file0' + }) + + # Filter replaced, but still exists: + # dik0 -file-> file0 <-file- filter + vm.assert_edges_list([ + ('disk0', 'file', 'file0'), + ('filter', 'file', 'file0') + ]) + + vm.qmp_check('blockdev-del', node_name='filter') + + # Filter removed + # dik0 -file-> file0 + vm.assert_edges_list([ + ('disk0', 'file', 'file0') + ]) + + def test_tran_insert_under_qdev(self): + vm = self.vm + + vm.qmp_check('device_add', driver='virtio-scsi') + vm.qmp_check('device_add', id='sda', driver='scsi-hd', drive='disk0') + + vm.qmp_check('transaction', actions=[ + { + 'type': 'blockdev-add', + 'data': { + 'node-name': 'filter', + 'driver': 'compress', + 'file': 'disk0' + } + }, { + 'type': 'x-blockdev-replace', + 'data': { + 'parent-type': 'qdev', + 'qdev-id': 'sda', + 'new-child': 'filter' + } + } + ]) + + # Filter inserted: + # sda -root-> filter -file-> disk0 -file-> file0 + vm.assert_edges_list([ + # parent_node_name, child_name, child_node_name + ('sda', 'root', 'filter'), + ('filter', 'file', 'disk0'), + ('disk0', 'file', 'file0'), + ]) + + vm.qmp_check('x-blockdev-replace', { + 'parent-type': 'qdev', + 'qdev-id': 'sda', + 'new-child': 'disk0' + }) + vm.qmp_check('blockdev-del', node_name='filter') + + # Filter removed: + # sda -root-> disk0 -file-> file0 + vm.assert_edges_list([ + # parent_node_name, child_name, child_node_name + ('sda', 'root', 'disk0'), + ('disk0', 'file', 'file0'), + ]) + + def test_tran_insert_under_nbd_export(self): + vm = self.vm + + vm.qmp_check('nbd-server-start', + addr={'type': 'unix', 'data': {'path': sock}}) + vm.qmp_check('block-export-add', id='exp1', type='nbd', + node_name='disk0', name='exp1') + vm.qmp_check('block-export-add', id='exp2', type='nbd', + node_name='disk0', name='exp2') + vm.qmp_check('object-add', qom_type='throttle-group', + id='tg', limits={'iops-read': 1}) + + vm.qmp_check('transaction', actions=[ + { + 'type': 'blockdev-add', + 'data': { + 'node-name': 'filter', + 'driver': 'throttle', + 'throttle-group': 'tg', + 'file': 'disk0' + } + }, { + 'type': 'x-blockdev-replace', + 'data': { + 'parent-type': 'export', + 'export-id': 'exp1', + 'new-child': 'filter' + } + } + ]) + + # Only exp1 is throttled, exp2 is not: + # exp1 -root-> filter + # | + # |file + # v + # exp2 -file-> disk0 -file> file0 + vm.assert_edges_list([ + # parent_node_name, child_name, child_node_name + ('exp1', 'root', 'filter'), + ('filter', 'file', 'disk0'), + ('disk0', 'file', 'file0'), + ('exp2', 'root', 'disk0') + ]) + + vm.qmp_check('x-blockdev-replace', { + 'parent-type': 'export', + 'export-id': 'exp2', + 'new-child': 'filter' + }) + + # Both throttled: + # exp1 -root-> filter <-file- exp2 + # | + # |file + # v + # disk0 -file> file0 + vm.assert_edges_list([ + # parent_node_name, child_name, child_node_name + ('exp1', 'root', 'filter'), + ('filter', 'file', 'disk0'), + ('disk0', 'file', 'file0'), + ('exp2', 'root', 'filter') + ]) + + # Check, that filter is in use and can't be removed + result = vm.qmp('blockdev-del', node_name='filter') + self.assert_qmp(result, 'error/desc', 'Node filter is in use') + + vm.qmp_check('transaction', actions=[ + { + 'type': 'x-blockdev-replace', + 'data': { + 'parent-type': 'export', + 'export-id': 'exp1', + 'new-child': 'disk0' + } + }, { + 'type': 'x-blockdev-replace', + 'data': { + 'parent-type': 'export', + 'export-id': 'exp2', + 'new-child': 'disk0' + } + } + ]) + vm.qmp_check('blockdev-del', node_name='filter') + + # Filter removed: + # exp1 -root-> disk0 <-file- exp2 + # | + # |file + # v + # file0 + vm.assert_edges_list([ + # parent_node_name, child_name, child_node_name + ('exp1', 'root', 'disk0'), + ('disk0', 'file', 'file0'), + ('exp2', 'root', 'disk0') + ]) + + +if __name__ == '__main__': + iotests.main( + supported_fmts=['qcow2'], + supported_protocols=['file'] + ) diff --git a/tests/qemu-iotests/tests/filter-insertion.out b/tests/qemu-iotests/tests/filter-insertion.out new file mode 100644 index 0000000000..8d7e996700 --- /dev/null +++ b/tests/qemu-iotests/tests/filter-insertion.out @@ -0,0 +1,5 @@ +... +---------------------------------------------------------------------- +Ran 3 tests + +OK -- 2.31.1
