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https://github.com/xemu-project/xemu.git
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c20555e15f
Now, bdrv_node_check_perm() is called only with fresh cumulative permissions, so its actually "refresh_perm". Move permission calculation to the function. Also, drop unreachable error message and rewrite the remaining one to be more generic (as now we don't know which node is added and which was already here). Add also Virtuozzo copyright, as big work is done at this point. Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <20210428151804.439460-37-vsementsov@virtuozzo.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
1041 lines
44 KiB
Python
Executable File
1041 lines
44 KiB
Python
Executable File
#!/usr/bin/env python3
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# group: rw
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#
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# Test cases for the QMP 'x-blockdev-reopen' command
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#
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# Copyright (C) 2018-2019 Igalia, S.L.
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# Author: Alberto Garcia <berto@igalia.com>
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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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import os
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import re
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import iotests
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import copy
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import json
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from iotests import qemu_img, qemu_io
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hd_path = [
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os.path.join(iotests.test_dir, 'hd0.img'),
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os.path.join(iotests.test_dir, 'hd1.img'),
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os.path.join(iotests.test_dir, 'hd2.img')
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]
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def hd_opts(idx):
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return {'driver': iotests.imgfmt,
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'node-name': 'hd%d' % idx,
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'file': {'driver': 'file',
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'node-name': 'hd%d-file' % idx,
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'filename': hd_path[idx] } }
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class TestBlockdevReopen(iotests.QMPTestCase):
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total_io_cmds = 0
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def setUp(self):
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qemu_img('create', '-f', iotests.imgfmt, hd_path[0], '3M')
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qemu_img('create', '-f', iotests.imgfmt, '-b', hd_path[0],
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'-F', iotests.imgfmt, hd_path[1])
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qemu_img('create', '-f', iotests.imgfmt, hd_path[2], '3M')
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qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0xa0 0 1M', hd_path[0])
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qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0xa1 1M 1M', hd_path[1])
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qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0xa2 2M 1M', hd_path[2])
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self.vm = iotests.VM()
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self.vm.launch()
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def tearDown(self):
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self.vm.shutdown()
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self.check_qemu_io_errors()
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os.remove(hd_path[0])
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os.remove(hd_path[1])
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os.remove(hd_path[2])
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# The output of qemu-io is not returned by vm.hmp_qemu_io() but
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# it's stored in the log and can only be read when the VM has been
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# shut down. This function runs qemu-io and keeps track of the
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# number of times it's been called.
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def run_qemu_io(self, img, cmd):
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result = self.vm.hmp_qemu_io(img, cmd)
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self.assert_qmp(result, 'return', '')
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self.total_io_cmds += 1
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# Once the VM is shut down we can parse the log and see if qemu-io
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# ran without errors.
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def check_qemu_io_errors(self):
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self.assertFalse(self.vm.is_running())
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found = 0
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log = self.vm.get_log()
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for line in log.split("\n"):
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if line.startswith("Pattern verification failed"):
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raise Exception("%s (command #%d)" % (line, found))
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if re.match("read .*/.* bytes at offset", line):
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found += 1
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self.assertEqual(found, self.total_io_cmds,
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"Expected output of %d qemu-io commands, found %d" %
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(found, self.total_io_cmds))
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# Run x-blockdev-reopen with 'opts' but applying 'newopts'
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# on top of it. The original 'opts' dict is unmodified
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def reopen(self, opts, newopts = {}, errmsg = None):
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opts = copy.deepcopy(opts)
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# Apply the changes from 'newopts' on top of 'opts'
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for key in newopts:
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value = newopts[key]
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# If key has the form "foo.bar" then we need to do
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# opts["foo"]["bar"] = value, not opts["foo.bar"] = value
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subdict = opts
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while key.find('.') != -1:
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[prefix, key] = key.split('.', 1)
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subdict = opts[prefix]
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subdict[key] = value
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result = self.vm.qmp('x-blockdev-reopen', conv_keys = False, **opts)
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if errmsg:
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self.assert_qmp(result, 'error/class', 'GenericError')
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self.assert_qmp(result, 'error/desc', errmsg)
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else:
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self.assert_qmp(result, 'return', {})
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# Run query-named-block-nodes and return the specified entry
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def get_node(self, node_name):
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result = self.vm.qmp('query-named-block-nodes')
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for node in result['return']:
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if node['node-name'] == node_name:
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return node
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return None
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# Run 'query-named-block-nodes' and compare its output with the
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# value passed by the user in 'graph'
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def check_node_graph(self, graph):
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result = self.vm.qmp('query-named-block-nodes')
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self.assertEqual(json.dumps(graph, sort_keys=True),
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json.dumps(result, sort_keys=True))
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# This test opens one single disk image (without backing files)
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# and tries to reopen it with illegal / incorrect parameters.
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def test_incorrect_parameters_single_file(self):
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# Open 'hd0' only (no backing files)
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opts = hd_opts(0)
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result = self.vm.qmp('blockdev-add', conv_keys = False, **opts)
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self.assert_qmp(result, 'return', {})
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original_graph = self.vm.qmp('query-named-block-nodes')
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# We can reopen the image passing the same options
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self.reopen(opts)
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# We can also reopen passing a child reference in 'file'
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self.reopen(opts, {'file': 'hd0-file'})
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# We cannot change any of these
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self.reopen(opts, {'node-name': 'not-found'}, "Failed to find node with node-name='not-found'")
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self.reopen(opts, {'node-name': ''}, "Failed to find node with node-name=''")
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self.reopen(opts, {'node-name': None}, "Invalid parameter type for 'node-name', expected: string")
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self.reopen(opts, {'driver': 'raw'}, "Cannot change the option 'driver'")
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self.reopen(opts, {'driver': ''}, "Invalid parameter ''")
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self.reopen(opts, {'driver': None}, "Invalid parameter type for 'driver', expected: string")
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self.reopen(opts, {'file': 'not-found'}, "Cannot change the option 'file'")
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self.reopen(opts, {'file': ''}, "Cannot change the option 'file'")
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self.reopen(opts, {'file': None}, "Invalid parameter type for 'file', expected: BlockdevRef")
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self.reopen(opts, {'file.node-name': 'newname'}, "Cannot change the option 'node-name'")
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self.reopen(opts, {'file.driver': 'host_device'}, "Cannot change the option 'driver'")
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self.reopen(opts, {'file.filename': hd_path[1]}, "Cannot change the option 'filename'")
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self.reopen(opts, {'file.aio': 'native'}, "Cannot change the option 'aio'")
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self.reopen(opts, {'file.locking': 'off'}, "Cannot change the option 'locking'")
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self.reopen(opts, {'file.filename': None}, "Invalid parameter type for 'file.filename', expected: string")
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# node-name is optional in BlockdevOptions, but x-blockdev-reopen needs it
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del opts['node-name']
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self.reopen(opts, {}, "node-name not specified")
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# Check that nothing has changed
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self.check_node_graph(original_graph)
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# Remove the node
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result = self.vm.qmp('blockdev-del', conv_keys = True, node_name = 'hd0')
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self.assert_qmp(result, 'return', {})
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# This test opens an image with a backing file and tries to reopen
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# it with illegal / incorrect parameters.
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def test_incorrect_parameters_backing_file(self):
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# Open hd1 omitting the backing options (hd0 will be opened
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# with the default options)
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opts = hd_opts(1)
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result = self.vm.qmp('blockdev-add', conv_keys = False, **opts)
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self.assert_qmp(result, 'return', {})
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original_graph = self.vm.qmp('query-named-block-nodes')
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# We can't reopen the image passing the same options, 'backing' is mandatory
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self.reopen(opts, {}, "backing is missing for 'hd1'")
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# Everything works if we pass 'backing' using the existing node name
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for node in original_graph['return']:
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if node['drv'] == iotests.imgfmt and node['file'] == hd_path[0]:
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backing_node_name = node['node-name']
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self.reopen(opts, {'backing': backing_node_name})
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# We can't use a non-existing or empty (non-NULL) node as the backing image
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self.reopen(opts, {'backing': 'not-found'}, "Cannot find device=\'\' nor node-name=\'not-found\'")
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self.reopen(opts, {'backing': ''}, "Cannot find device=\'\' nor node-name=\'\'")
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# We can reopen the image just fine if we specify the backing options
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opts['backing'] = {'driver': iotests.imgfmt,
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'file': {'driver': 'file',
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'filename': hd_path[0]}}
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self.reopen(opts)
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# We cannot change any of these options
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self.reopen(opts, {'backing.node-name': 'newname'}, "Cannot change the option 'node-name'")
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self.reopen(opts, {'backing.driver': 'raw'}, "Cannot change the option 'driver'")
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self.reopen(opts, {'backing.file.node-name': 'newname'}, "Cannot change the option 'node-name'")
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self.reopen(opts, {'backing.file.driver': 'host_device'}, "Cannot change the option 'driver'")
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# Check that nothing has changed since the beginning
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self.check_node_graph(original_graph)
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# Remove the node
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result = self.vm.qmp('blockdev-del', conv_keys = True, node_name = 'hd1')
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self.assert_qmp(result, 'return', {})
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# Reopen an image several times changing some of its options
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def test_reopen(self):
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# Check whether the filesystem supports O_DIRECT
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if 'O_DIRECT' in qemu_io('-f', 'raw', '-t', 'none', '-c', 'quit', hd_path[0]):
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supports_direct = False
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else:
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supports_direct = True
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# Open the hd1 image passing all backing options
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opts = hd_opts(1)
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opts['backing'] = hd_opts(0)
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result = self.vm.qmp('blockdev-add', conv_keys = False, **opts)
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self.assert_qmp(result, 'return', {})
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original_graph = self.vm.qmp('query-named-block-nodes')
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# We can reopen the image passing the same options
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self.reopen(opts)
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# Reopen in read-only mode
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self.assert_qmp(self.get_node('hd1'), 'ro', False)
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self.reopen(opts, {'read-only': True})
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self.assert_qmp(self.get_node('hd1'), 'ro', True)
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self.reopen(opts)
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self.assert_qmp(self.get_node('hd1'), 'ro', False)
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# Change the cache options
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self.assert_qmp(self.get_node('hd1'), 'cache/writeback', True)
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self.assert_qmp(self.get_node('hd1'), 'cache/direct', False)
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self.assert_qmp(self.get_node('hd1'), 'cache/no-flush', False)
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self.reopen(opts, {'cache': { 'direct': supports_direct, 'no-flush': True }})
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self.assert_qmp(self.get_node('hd1'), 'cache/writeback', True)
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self.assert_qmp(self.get_node('hd1'), 'cache/direct', supports_direct)
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self.assert_qmp(self.get_node('hd1'), 'cache/no-flush', True)
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# Reopen again with the original options
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self.reopen(opts)
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self.assert_qmp(self.get_node('hd1'), 'cache/writeback', True)
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self.assert_qmp(self.get_node('hd1'), 'cache/direct', False)
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self.assert_qmp(self.get_node('hd1'), 'cache/no-flush', False)
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# Change 'detect-zeroes' and 'discard'
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self.assert_qmp(self.get_node('hd1'), 'detect_zeroes', 'off')
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self.reopen(opts, {'detect-zeroes': 'on'})
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self.assert_qmp(self.get_node('hd1'), 'detect_zeroes', 'on')
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self.reopen(opts, {'detect-zeroes': 'unmap'},
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"setting detect-zeroes to unmap is not allowed " +
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"without setting discard operation to unmap")
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self.assert_qmp(self.get_node('hd1'), 'detect_zeroes', 'on')
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self.reopen(opts, {'detect-zeroes': 'unmap', 'discard': 'unmap'})
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self.assert_qmp(self.get_node('hd1'), 'detect_zeroes', 'unmap')
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self.reopen(opts)
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self.assert_qmp(self.get_node('hd1'), 'detect_zeroes', 'off')
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# Changing 'force-share' is currently not supported
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self.reopen(opts, {'force-share': True}, "Cannot change the option 'force-share'")
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# Change some qcow2-specific options
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# No way to test for success other than checking the return message
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if iotests.imgfmt == 'qcow2':
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self.reopen(opts, {'l2-cache-entry-size': 128 * 1024},
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"L2 cache entry size must be a power of two "+
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"between 512 and the cluster size (65536)")
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self.reopen(opts, {'l2-cache-size': 1024 * 1024,
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'cache-size': 512 * 1024},
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"l2-cache-size may not exceed cache-size")
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self.reopen(opts, {'l2-cache-size': 4 * 1024 * 1024,
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'refcount-cache-size': 4 * 1024 * 1024,
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'l2-cache-entry-size': 32 * 1024})
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self.reopen(opts, {'pass-discard-request': True})
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# Check that nothing has changed since the beginning
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# (from the parameters that we can check)
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self.check_node_graph(original_graph)
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# Check that the node names (other than the top-level one) are optional
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del opts['file']['node-name']
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del opts['backing']['node-name']
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del opts['backing']['file']['node-name']
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self.reopen(opts)
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self.check_node_graph(original_graph)
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# Reopen setting backing = null, this removes the backing image from the chain
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self.reopen(opts, {'backing': None})
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self.assert_qmp_absent(self.get_node('hd1'), 'image/backing-image')
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# Open the 'hd0' image
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result = self.vm.qmp('blockdev-add', conv_keys = False, **hd_opts(0))
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self.assert_qmp(result, 'return', {})
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# Reopen the hd1 image setting 'hd0' as its backing image
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self.reopen(opts, {'backing': 'hd0'})
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self.assert_qmp(self.get_node('hd1'), 'image/backing-image/filename', hd_path[0])
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# Check that nothing has changed since the beginning
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self.reopen(hd_opts(0), {'read-only': True})
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self.check_node_graph(original_graph)
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# The backing file (hd0) is now a reference, we cannot change backing.* anymore
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self.reopen(opts, {}, "Cannot change the option 'backing.driver'")
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# We can't remove 'hd0' while it's a backing image of 'hd1'
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result = self.vm.qmp('blockdev-del', conv_keys = True, node_name = 'hd0')
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self.assert_qmp(result, 'error/class', 'GenericError')
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self.assert_qmp(result, 'error/desc', "Node 'hd0' is busy: node is used as backing hd of 'hd1'")
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# But we can remove both nodes if done in the proper order
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result = self.vm.qmp('blockdev-del', conv_keys = True, node_name = 'hd1')
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self.assert_qmp(result, 'return', {})
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result = self.vm.qmp('blockdev-del', conv_keys = True, node_name = 'hd0')
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self.assert_qmp(result, 'return', {})
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# Reopen a raw image and see the effect of changing the 'offset' option
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def test_reopen_raw(self):
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opts = {'driver': 'raw', 'node-name': 'hd0',
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'file': { 'driver': 'file',
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'filename': hd_path[0],
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'node-name': 'hd0-file' } }
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# First we create a 2MB raw file, and fill each half with a
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# different value
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qemu_img('create', '-f', 'raw', hd_path[0], '2M')
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qemu_io('-f', 'raw', '-c', 'write -P 0xa0 0 1M', hd_path[0])
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qemu_io('-f', 'raw', '-c', 'write -P 0xa1 1M 1M', hd_path[0])
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# Open the raw file with QEMU
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result = self.vm.qmp('blockdev-add', conv_keys = False, **opts)
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self.assert_qmp(result, 'return', {})
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# Read 1MB from offset 0
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self.run_qemu_io("hd0", "read -P 0xa0 0 1M")
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# Reopen the image with a 1MB offset.
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# Now the results are different
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self.reopen(opts, {'offset': 1024*1024})
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self.run_qemu_io("hd0", "read -P 0xa1 0 1M")
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# Reopen again with the original options.
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# We get the original results again
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self.reopen(opts)
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self.run_qemu_io("hd0", "read -P 0xa0 0 1M")
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# Remove the block device
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result = self.vm.qmp('blockdev-del', conv_keys = True, node_name = 'hd0')
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self.assert_qmp(result, 'return', {})
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# Omitting an option should reset it to the default value, but if
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# an option cannot be changed it shouldn't be possible to reset it
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# to its default value either
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def test_reset_default_values(self):
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opts = {'driver': 'qcow2', 'node-name': 'hd0',
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'file': { 'driver': 'file',
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'filename': hd_path[0],
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'x-check-cache-dropped': True, # This one can be changed
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'locking': 'off', # This one can NOT be changed
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'node-name': 'hd0-file' } }
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# Open the file with QEMU
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result = self.vm.qmp('blockdev-add', conv_keys = False, **opts)
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self.assert_qmp(result, 'return', {})
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# file.x-check-cache-dropped can be changed...
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self.reopen(opts, { 'file.x-check-cache-dropped': False })
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# ...and dropped completely (resetting to the default value)
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del opts['file']['x-check-cache-dropped']
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self.reopen(opts)
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# file.locking cannot be changed nor reset to the default value
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self.reopen(opts, { 'file.locking': 'on' }, "Cannot change the option 'locking'")
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del opts['file']['locking']
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self.reopen(opts, {}, "Option 'locking' cannot be reset to its default value")
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# But we can reopen it if we maintain its previous value
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self.reopen(opts, { 'file.locking': 'off' })
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# Remove the block device
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result = self.vm.qmp('blockdev-del', conv_keys = True, node_name = 'hd0')
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self.assert_qmp(result, 'return', {})
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# This test modifies the node graph a few times by changing the
|
|
# 'backing' option on reopen and verifies that the guest data that
|
|
# is read afterwards is consistent with the graph changes.
|
|
def test_io_with_graph_changes(self):
|
|
opts = []
|
|
|
|
# Open hd0, hd1 and hd2 without any backing image
|
|
for i in range(3):
|
|
opts.append(hd_opts(i))
|
|
opts[i]['backing'] = None
|
|
result = self.vm.qmp('blockdev-add', conv_keys = False, **opts[i])
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
# hd0
|
|
self.run_qemu_io("hd0", "read -P 0xa0 0 1M")
|
|
self.run_qemu_io("hd0", "read -P 0 1M 1M")
|
|
self.run_qemu_io("hd0", "read -P 0 2M 1M")
|
|
|
|
# hd1 <- hd0
|
|
self.reopen(opts[0], {'backing': 'hd1'})
|
|
|
|
self.run_qemu_io("hd0", "read -P 0xa0 0 1M")
|
|
self.run_qemu_io("hd0", "read -P 0xa1 1M 1M")
|
|
self.run_qemu_io("hd0", "read -P 0 2M 1M")
|
|
|
|
# hd1 <- hd0 , hd1 <- hd2
|
|
self.reopen(opts[2], {'backing': 'hd1'})
|
|
|
|
self.run_qemu_io("hd2", "read -P 0 0 1M")
|
|
self.run_qemu_io("hd2", "read -P 0xa1 1M 1M")
|
|
self.run_qemu_io("hd2", "read -P 0xa2 2M 1M")
|
|
|
|
# hd1 <- hd2 <- hd0
|
|
self.reopen(opts[0], {'backing': 'hd2'})
|
|
|
|
self.run_qemu_io("hd0", "read -P 0xa0 0 1M")
|
|
self.run_qemu_io("hd0", "read -P 0xa1 1M 1M")
|
|
self.run_qemu_io("hd0", "read -P 0xa2 2M 1M")
|
|
|
|
# hd2 <- hd0
|
|
self.reopen(opts[2], {'backing': None})
|
|
|
|
self.run_qemu_io("hd0", "read -P 0xa0 0 1M")
|
|
self.run_qemu_io("hd0", "read -P 0 1M 1M")
|
|
self.run_qemu_io("hd0", "read -P 0xa2 2M 1M")
|
|
|
|
# hd2 <- hd1 <- hd0
|
|
self.reopen(opts[1], {'backing': 'hd2'})
|
|
self.reopen(opts[0], {'backing': 'hd1'})
|
|
|
|
self.run_qemu_io("hd0", "read -P 0xa0 0 1M")
|
|
self.run_qemu_io("hd0", "read -P 0xa1 1M 1M")
|
|
self.run_qemu_io("hd0", "read -P 0xa2 2M 1M")
|
|
|
|
# Illegal operation: hd2 is a child of hd1
|
|
self.reopen(opts[2], {'backing': 'hd1'},
|
|
"Making 'hd1' a backing file of 'hd2' would create a cycle")
|
|
|
|
# hd2 <- hd0, hd2 <- hd1
|
|
self.reopen(opts[0], {'backing': 'hd2'})
|
|
|
|
self.run_qemu_io("hd1", "read -P 0 0 1M")
|
|
self.run_qemu_io("hd1", "read -P 0xa1 1M 1M")
|
|
self.run_qemu_io("hd1", "read -P 0xa2 2M 1M")
|
|
|
|
# More illegal operations
|
|
self.reopen(opts[2], {'backing': 'hd1'},
|
|
"Making 'hd1' a backing file of 'hd2' would create a cycle")
|
|
self.reopen(opts[2], {'file': 'hd0-file'}, "Cannot change the option 'file'")
|
|
|
|
result = self.vm.qmp('blockdev-del', conv_keys = True, node_name = 'hd2')
|
|
self.assert_qmp(result, 'error/class', 'GenericError')
|
|
self.assert_qmp(result, 'error/desc', "Node 'hd2' is busy: node is used as backing hd of 'hd0'")
|
|
|
|
# hd1 doesn't have a backing file now
|
|
self.reopen(opts[1], {'backing': None})
|
|
|
|
self.run_qemu_io("hd1", "read -P 0 0 1M")
|
|
self.run_qemu_io("hd1", "read -P 0xa1 1M 1M")
|
|
self.run_qemu_io("hd1", "read -P 0 2M 1M")
|
|
|
|
# We can't remove the 'backing' option if the image has a
|
|
# default backing file
|
|
del opts[1]['backing']
|
|
self.reopen(opts[1], {}, "backing is missing for 'hd1'")
|
|
|
|
self.run_qemu_io("hd1", "read -P 0 0 1M")
|
|
self.run_qemu_io("hd1", "read -P 0xa1 1M 1M")
|
|
self.run_qemu_io("hd1", "read -P 0 2M 1M")
|
|
|
|
# This test verifies that we can't change the children of a block
|
|
# device during a reopen operation in a way that would create
|
|
# cycles in the node graph
|
|
@iotests.skip_if_unsupported(['blkverify'])
|
|
def test_graph_cycles(self):
|
|
opts = []
|
|
|
|
# Open all three images without backing file
|
|
for i in range(3):
|
|
opts.append(hd_opts(i))
|
|
opts[i]['backing'] = None
|
|
result = self.vm.qmp('blockdev-add', conv_keys = False, **opts[i])
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
# hd1 <- hd0, hd1 <- hd2
|
|
self.reopen(opts[0], {'backing': 'hd1'})
|
|
self.reopen(opts[2], {'backing': 'hd1'})
|
|
|
|
# Illegal: hd2 is backed by hd1
|
|
self.reopen(opts[1], {'backing': 'hd2'},
|
|
"Making 'hd2' a backing file of 'hd1' would create a cycle")
|
|
|
|
# hd1 <- hd0 <- hd2
|
|
self.reopen(opts[2], {'backing': 'hd0'})
|
|
|
|
# Illegal: hd2 is backed by hd0, which is backed by hd1
|
|
self.reopen(opts[1], {'backing': 'hd2'},
|
|
"Making 'hd2' a backing file of 'hd1' would create a cycle")
|
|
|
|
# Illegal: hd1 cannot point to itself
|
|
self.reopen(opts[1], {'backing': 'hd1'},
|
|
"Making 'hd1' a backing file of 'hd1' would create a cycle")
|
|
|
|
# Remove all backing files
|
|
self.reopen(opts[0])
|
|
self.reopen(opts[2])
|
|
|
|
##########################################
|
|
# Add a blkverify node using hd0 and hd1 #
|
|
##########################################
|
|
bvopts = {'driver': 'blkverify',
|
|
'node-name': 'bv',
|
|
'test': 'hd0',
|
|
'raw': 'hd1'}
|
|
result = self.vm.qmp('blockdev-add', conv_keys = False, **bvopts)
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
# blkverify doesn't currently allow reopening. TODO: implement this
|
|
self.reopen(bvopts, {}, "Block format 'blkverify' used by node 'bv'" +
|
|
" does not support reopening files")
|
|
|
|
# Illegal: hd0 is a child of the blkverify node
|
|
self.reopen(opts[0], {'backing': 'bv'},
|
|
"Making 'bv' a backing file of 'hd0' would create a cycle")
|
|
|
|
# Delete the blkverify node
|
|
result = self.vm.qmp('blockdev-del', conv_keys = True, node_name = 'bv')
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
# Misc reopen tests with different block drivers
|
|
@iotests.skip_if_unsupported(['quorum', 'throttle'])
|
|
def test_misc_drivers(self):
|
|
####################
|
|
###### quorum ######
|
|
####################
|
|
for i in range(3):
|
|
opts = hd_opts(i)
|
|
# Open all three images without backing file
|
|
opts['backing'] = None
|
|
result = self.vm.qmp('blockdev-add', conv_keys = False, **opts)
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
opts = {'driver': 'quorum',
|
|
'node-name': 'quorum0',
|
|
'children': ['hd0', 'hd1', 'hd2'],
|
|
'vote-threshold': 2}
|
|
result = self.vm.qmp('blockdev-add', conv_keys = False, **opts)
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
# Quorum doesn't currently allow reopening. TODO: implement this
|
|
self.reopen(opts, {}, "Block format 'quorum' used by node 'quorum0'" +
|
|
" does not support reopening files")
|
|
|
|
# You can't make quorum0 a backing file of hd0:
|
|
# hd0 is already a child of quorum0.
|
|
self.reopen(hd_opts(0), {'backing': 'quorum0'},
|
|
"Making 'quorum0' a backing file of 'hd0' would create a cycle")
|
|
|
|
# Delete quorum0
|
|
result = self.vm.qmp('blockdev-del', conv_keys = True, node_name = 'quorum0')
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
# Delete hd0, hd1 and hd2
|
|
for i in range(3):
|
|
result = self.vm.qmp('blockdev-del', conv_keys = True,
|
|
node_name = 'hd%d' % i)
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
######################
|
|
###### blkdebug ######
|
|
######################
|
|
opts = {'driver': 'blkdebug',
|
|
'node-name': 'bd',
|
|
'config': '/dev/null',
|
|
'image': hd_opts(0)}
|
|
result = self.vm.qmp('blockdev-add', conv_keys = False, **opts)
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
# blkdebug allows reopening if we keep the same options
|
|
self.reopen(opts)
|
|
|
|
# but it currently does not allow changes
|
|
self.reopen(opts, {'image': 'hd1'}, "Cannot change the option 'image'")
|
|
self.reopen(opts, {'align': 33554432}, "Cannot change the option 'align'")
|
|
self.reopen(opts, {'config': '/non/existent'}, "Cannot change the option 'config'")
|
|
del opts['config']
|
|
self.reopen(opts, {}, "Option 'config' cannot be reset to its default value")
|
|
|
|
# Delete the blkdebug node
|
|
result = self.vm.qmp('blockdev-del', conv_keys = True, node_name = 'bd')
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
##################
|
|
###### null ######
|
|
##################
|
|
opts = {'driver': 'null-co', 'node-name': 'root', 'size': 1024}
|
|
|
|
result = self.vm.qmp('blockdev-add', conv_keys = False, **opts)
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
# 1 << 30 is the default value, but we cannot change it explicitly
|
|
self.reopen(opts, {'size': (1 << 30)}, "Cannot change the option 'size'")
|
|
|
|
# We cannot change 'size' back to its default value either
|
|
del opts['size']
|
|
self.reopen(opts, {}, "Option 'size' cannot be reset to its default value")
|
|
|
|
result = self.vm.qmp('blockdev-del', conv_keys = True, node_name = 'root')
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
##################
|
|
###### file ######
|
|
##################
|
|
opts = hd_opts(0)
|
|
opts['file']['locking'] = 'on'
|
|
result = self.vm.qmp('blockdev-add', conv_keys = False, **opts)
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
# 'locking' cannot be changed
|
|
del opts['file']['locking']
|
|
self.reopen(opts, {'file.locking': 'on'})
|
|
self.reopen(opts, {'file.locking': 'off'}, "Cannot change the option 'locking'")
|
|
self.reopen(opts, {}, "Option 'locking' cannot be reset to its default value")
|
|
|
|
# Trying to reopen the 'file' node directly does not make a difference
|
|
opts = opts['file']
|
|
self.reopen(opts, {'locking': 'on'})
|
|
self.reopen(opts, {'locking': 'off'}, "Cannot change the option 'locking'")
|
|
self.reopen(opts, {}, "Option 'locking' cannot be reset to its default value")
|
|
|
|
result = self.vm.qmp('blockdev-del', conv_keys = True, node_name = 'hd0')
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
######################
|
|
###### throttle ######
|
|
######################
|
|
opts = { 'qom-type': 'throttle-group', 'id': 'group0',
|
|
'limits': { 'iops-total': 1000 } }
|
|
result = self.vm.qmp('object-add', conv_keys = False, **opts)
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
opts = { 'qom-type': 'throttle-group', 'id': 'group1',
|
|
'limits': { 'iops-total': 2000 } }
|
|
result = self.vm.qmp('object-add', conv_keys = False, **opts)
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
# Add a throttle filter with group = group0
|
|
opts = { 'driver': 'throttle', 'node-name': 'throttle0',
|
|
'throttle-group': 'group0', 'file': hd_opts(0) }
|
|
result = self.vm.qmp('blockdev-add', conv_keys = False, **opts)
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
# We can reopen it if we keep the same options
|
|
self.reopen(opts)
|
|
|
|
# We can also reopen if 'file' is a reference to the child
|
|
self.reopen(opts, {'file': 'hd0'})
|
|
|
|
# This is illegal
|
|
self.reopen(opts, {'throttle-group': 'notfound'}, "Throttle group 'notfound' does not exist")
|
|
|
|
# But it's possible to change the group to group1
|
|
self.reopen(opts, {'throttle-group': 'group1'})
|
|
|
|
# Now group1 is in use, it cannot be deleted
|
|
result = self.vm.qmp('object-del', id = 'group1')
|
|
self.assert_qmp(result, 'error/class', 'GenericError')
|
|
self.assert_qmp(result, 'error/desc', "object 'group1' is in use, can not be deleted")
|
|
|
|
# Default options, this switches the group back to group0
|
|
self.reopen(opts)
|
|
|
|
# So now we cannot delete group0
|
|
result = self.vm.qmp('object-del', id = 'group0')
|
|
self.assert_qmp(result, 'error/class', 'GenericError')
|
|
self.assert_qmp(result, 'error/desc', "object 'group0' is in use, can not be deleted")
|
|
|
|
# But group1 is free this time, and it can be deleted
|
|
result = self.vm.qmp('object-del', id = 'group1')
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
# Let's delete the filter node
|
|
result = self.vm.qmp('blockdev-del', conv_keys = True, node_name = 'throttle0')
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
# And we can finally get rid of group0
|
|
result = self.vm.qmp('object-del', id = 'group0')
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
# If an image has a backing file then the 'backing' option must be
|
|
# passed on reopen. We don't allow leaving the option out in this
|
|
# case because it's unclear what the correct semantics would be.
|
|
def test_missing_backing_options_1(self):
|
|
# hd2
|
|
opts = hd_opts(2)
|
|
result = self.vm.qmp('blockdev-add', conv_keys = False, **opts)
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
# hd0
|
|
opts = hd_opts(0)
|
|
result = self.vm.qmp('blockdev-add', conv_keys = False, **opts)
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
# hd0 has no backing file: we can omit the 'backing' option
|
|
self.reopen(opts)
|
|
|
|
# hd2 <- hd0
|
|
self.reopen(opts, {'backing': 'hd2'})
|
|
|
|
# hd0 has a backing file: we must set the 'backing' option
|
|
self.reopen(opts, {}, "backing is missing for 'hd0'")
|
|
|
|
# hd2 can't be removed because it's the backing file of hd0
|
|
result = self.vm.qmp('blockdev-del', conv_keys = True, node_name = 'hd2')
|
|
self.assert_qmp(result, 'error/class', 'GenericError')
|
|
self.assert_qmp(result, 'error/desc', "Node 'hd2' is busy: node is used as backing hd of 'hd0'")
|
|
|
|
# Detach hd2 from hd0.
|
|
self.reopen(opts, {'backing': None})
|
|
|
|
# Without a backing file, we can omit 'backing' again
|
|
self.reopen(opts)
|
|
|
|
# Remove both hd0 and hd2
|
|
result = self.vm.qmp('blockdev-del', conv_keys = True, node_name = 'hd0')
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
result = self.vm.qmp('blockdev-del', conv_keys = True, node_name = 'hd2')
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
# If an image has default backing file (as part of its metadata)
|
|
# then the 'backing' option must be passed on reopen. We don't
|
|
# allow leaving the option out in this case because it's unclear
|
|
# what the correct semantics would be.
|
|
def test_missing_backing_options_2(self):
|
|
# hd0 <- hd1
|
|
# (hd0 is hd1's default backing file)
|
|
opts = hd_opts(1)
|
|
result = self.vm.qmp('blockdev-add', conv_keys = False, **opts)
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
# hd1 has a backing file: we can't omit the 'backing' option
|
|
self.reopen(opts, {}, "backing is missing for 'hd1'")
|
|
|
|
# Let's detach the backing file
|
|
self.reopen(opts, {'backing': None})
|
|
|
|
# No backing file attached to hd1 now, but we still can't omit the 'backing' option
|
|
self.reopen(opts, {}, "backing is missing for 'hd1'")
|
|
|
|
result = self.vm.qmp('blockdev-del', conv_keys = True, node_name = 'hd1')
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
# Test that making 'backing' a reference to an existing child
|
|
# keeps its current options
|
|
def test_backing_reference(self):
|
|
# hd2 <- hd1 <- hd0
|
|
opts = hd_opts(0)
|
|
opts['backing'] = hd_opts(1)
|
|
opts['backing']['backing'] = hd_opts(2)
|
|
# Enable 'detect-zeroes' on all three nodes
|
|
opts['detect-zeroes'] = 'on'
|
|
opts['backing']['detect-zeroes'] = 'on'
|
|
opts['backing']['backing']['detect-zeroes'] = 'on'
|
|
result = self.vm.qmp('blockdev-add', conv_keys = False, **opts)
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
# Reopen the chain passing the minimum amount of required options.
|
|
# By making 'backing' a reference to hd1 (instead of a sub-dict)
|
|
# we tell QEMU to keep its current set of options.
|
|
opts = {'driver': iotests.imgfmt,
|
|
'node-name': 'hd0',
|
|
'file': 'hd0-file',
|
|
'backing': 'hd1' }
|
|
self.reopen(opts)
|
|
|
|
# This has reset 'detect-zeroes' on hd0, but not on hd1 and hd2.
|
|
self.assert_qmp(self.get_node('hd0'), 'detect_zeroes', 'off')
|
|
self.assert_qmp(self.get_node('hd1'), 'detect_zeroes', 'on')
|
|
self.assert_qmp(self.get_node('hd2'), 'detect_zeroes', 'on')
|
|
|
|
# Test what happens if the graph changes due to other operations
|
|
# such as block-stream
|
|
def test_block_stream_1(self):
|
|
# hd1 <- hd0
|
|
opts = hd_opts(0)
|
|
opts['backing'] = hd_opts(1)
|
|
opts['backing']['backing'] = None
|
|
result = self.vm.qmp('blockdev-add', conv_keys = False, **opts)
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
# Stream hd1 into hd0 and wait until it's done
|
|
result = self.vm.qmp('block-stream', conv_keys = True, job_id = 'stream0', device = 'hd0')
|
|
self.assert_qmp(result, 'return', {})
|
|
self.wait_until_completed(drive = 'stream0')
|
|
|
|
# Now we have only hd0
|
|
self.assertEqual(self.get_node('hd1'), None)
|
|
|
|
# We have backing.* options but there's no backing file anymore
|
|
self.reopen(opts, {}, "Cannot change the option 'backing.driver'")
|
|
|
|
# If we remove the 'backing' option then we can reopen hd0 just fine
|
|
del opts['backing']
|
|
self.reopen(opts)
|
|
|
|
# We can also reopen hd0 if we set 'backing' to null
|
|
self.reopen(opts, {'backing': None})
|
|
|
|
result = self.vm.qmp('blockdev-del', conv_keys = True, node_name = 'hd0')
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
# Another block_stream test
|
|
def test_block_stream_2(self):
|
|
# hd2 <- hd1 <- hd0
|
|
opts = hd_opts(0)
|
|
opts['backing'] = hd_opts(1)
|
|
opts['backing']['backing'] = hd_opts(2)
|
|
result = self.vm.qmp('blockdev-add', conv_keys = False, **opts)
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
# Stream hd1 into hd0 and wait until it's done
|
|
result = self.vm.qmp('block-stream', conv_keys = True, job_id = 'stream0',
|
|
device = 'hd0', base_node = 'hd2')
|
|
self.assert_qmp(result, 'return', {})
|
|
self.wait_until_completed(drive = 'stream0')
|
|
|
|
# The chain is hd2 <- hd0 now. hd1 is missing
|
|
self.assertEqual(self.get_node('hd1'), None)
|
|
|
|
# The backing options in the dict were meant for hd1, but we cannot
|
|
# use them with hd2 because hd1 had a backing file while hd2 does not.
|
|
self.reopen(opts, {}, "Cannot change the option 'backing.driver'")
|
|
|
|
# If we remove hd1's options from the dict then things work fine
|
|
opts['backing'] = opts['backing']['backing']
|
|
self.reopen(opts)
|
|
|
|
# We can also reopen hd0 if we use a reference to the backing file
|
|
self.reopen(opts, {'backing': 'hd2'})
|
|
|
|
# But we cannot leave the option out
|
|
del opts['backing']
|
|
self.reopen(opts, {}, "backing is missing for 'hd0'")
|
|
|
|
# Now we can delete hd0 (and hd2)
|
|
result = self.vm.qmp('blockdev-del', conv_keys = True, node_name = 'hd0')
|
|
self.assert_qmp(result, 'return', {})
|
|
self.assertEqual(self.get_node('hd2'), None)
|
|
|
|
# Reopen the chain during a block-stream job (from hd1 to hd0)
|
|
def test_block_stream_3(self):
|
|
# hd2 <- hd1 <- hd0
|
|
opts = hd_opts(0)
|
|
opts['backing'] = hd_opts(1)
|
|
opts['backing']['backing'] = hd_opts(2)
|
|
result = self.vm.qmp('blockdev-add', conv_keys = False, **opts)
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
# hd2 <- hd0
|
|
result = self.vm.qmp('block-stream', conv_keys = True, job_id = 'stream0',
|
|
device = 'hd0', base_node = 'hd2',
|
|
auto_finalize = False)
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
# We can remove hd2 while the stream job is ongoing
|
|
opts['backing']['backing'] = None
|
|
self.reopen(opts, {})
|
|
|
|
# We can't remove hd1 while the stream job is ongoing
|
|
opts['backing'] = None
|
|
self.reopen(opts, {}, "Cannot change 'backing' link from 'hd0' to 'hd1'")
|
|
|
|
self.vm.run_job('stream0', auto_finalize = False, auto_dismiss = True)
|
|
|
|
# Reopen the chain during a block-stream job (from hd2 to hd1)
|
|
def test_block_stream_4(self):
|
|
# hd2 <- hd1 <- hd0
|
|
opts = hd_opts(0)
|
|
opts['backing'] = hd_opts(1)
|
|
opts['backing']['backing'] = hd_opts(2)
|
|
result = self.vm.qmp('blockdev-add', conv_keys = False, **opts)
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
# hd1 <- hd0
|
|
result = self.vm.qmp('block-stream', conv_keys = True, job_id = 'stream0',
|
|
device = 'hd1', filter_node_name='cor',
|
|
auto_finalize = False)
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
# We can't reopen with the original options because there is a filter
|
|
# inserted by stream job above hd1.
|
|
self.reopen(opts, {},
|
|
"Cannot change the option 'backing.backing.file.node-name'")
|
|
|
|
# We can't reopen hd1 to read-only, as block-stream requires it to be
|
|
# read-write
|
|
self.reopen(opts['backing'], {'read-only': True},
|
|
"Read-only block node 'hd1' cannot support read-write users")
|
|
|
|
# We can't remove hd2 while the stream job is ongoing
|
|
opts['backing']['backing'] = None
|
|
self.reopen(opts['backing'], {'read-only': False},
|
|
"Cannot change 'backing' link from 'hd1' to 'hd2'")
|
|
|
|
# We can detach hd1 from hd0 because it doesn't affect the stream job
|
|
opts['backing'] = None
|
|
self.reopen(opts)
|
|
|
|
self.vm.run_job('stream0', auto_finalize = False, auto_dismiss = True)
|
|
|
|
# Reopen the chain during a block-commit job (from hd0 to hd2)
|
|
def test_block_commit_1(self):
|
|
# hd2 <- hd1 <- hd0
|
|
opts = hd_opts(0)
|
|
opts['backing'] = hd_opts(1)
|
|
opts['backing']['backing'] = hd_opts(2)
|
|
result = self.vm.qmp('blockdev-add', conv_keys = False, **opts)
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
result = self.vm.qmp('block-commit', conv_keys = True, job_id = 'commit0',
|
|
device = 'hd0')
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
# We can't remove hd2 while the commit job is ongoing
|
|
opts['backing']['backing'] = None
|
|
self.reopen(opts, {}, "Cannot change 'backing' link from 'hd1' to 'hd2'")
|
|
|
|
# We can't remove hd1 while the commit job is ongoing
|
|
opts['backing'] = None
|
|
self.reopen(opts, {}, "Cannot change 'backing' link from 'hd0' to 'hd1'")
|
|
|
|
event = self.vm.event_wait(name='BLOCK_JOB_READY')
|
|
self.assert_qmp(event, 'data/device', 'commit0')
|
|
self.assert_qmp(event, 'data/type', 'commit')
|
|
self.assert_qmp_absent(event, 'data/error')
|
|
|
|
result = self.vm.qmp('block-job-complete', device='commit0')
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
self.wait_until_completed(drive = 'commit0')
|
|
|
|
# Reopen the chain during a block-commit job (from hd1 to hd2)
|
|
def test_block_commit_2(self):
|
|
# hd2 <- hd1 <- hd0
|
|
opts = hd_opts(0)
|
|
opts['backing'] = hd_opts(1)
|
|
opts['backing']['backing'] = hd_opts(2)
|
|
result = self.vm.qmp('blockdev-add', conv_keys = False, **opts)
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
result = self.vm.qmp('block-commit', conv_keys = True, job_id = 'commit0',
|
|
device = 'hd0', top_node = 'hd1',
|
|
auto_finalize = False)
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
# We can't remove hd2 while the commit job is ongoing
|
|
opts['backing']['backing'] = None
|
|
self.reopen(opts, {}, "Cannot change the option 'backing.driver'")
|
|
|
|
# We can't remove hd1 while the commit job is ongoing
|
|
opts['backing'] = None
|
|
self.reopen(opts, {}, "Cannot change backing link if 'hd0' has an implicit backing file")
|
|
|
|
# hd2 <- hd0
|
|
self.vm.run_job('commit0', auto_finalize = False, auto_dismiss = True)
|
|
|
|
self.assert_qmp(self.get_node('hd0'), 'ro', False)
|
|
self.assertEqual(self.get_node('hd1'), None)
|
|
self.assert_qmp(self.get_node('hd2'), 'ro', True)
|
|
|
|
def run_test_iothreads(self, iothread_a, iothread_b, errmsg = None):
|
|
opts = hd_opts(0)
|
|
result = self.vm.qmp('blockdev-add', conv_keys = False, **opts)
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
opts2 = hd_opts(2)
|
|
result = self.vm.qmp('blockdev-add', conv_keys = False, **opts2)
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
result = self.vm.qmp('object-add', qom_type='iothread', id='iothread0')
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
result = self.vm.qmp('object-add', qom_type='iothread', id='iothread1')
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
result = self.vm.qmp('device_add', driver='virtio-scsi', id='scsi0',
|
|
iothread=iothread_a)
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
result = self.vm.qmp('device_add', driver='virtio-scsi', id='scsi1',
|
|
iothread=iothread_b)
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
if iothread_a:
|
|
result = self.vm.qmp('device_add', driver='scsi-hd', drive='hd0',
|
|
share_rw=True, bus="scsi0.0")
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
if iothread_b:
|
|
result = self.vm.qmp('device_add', driver='scsi-hd', drive='hd2',
|
|
share_rw=True, bus="scsi1.0")
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
# Attaching the backing file may or may not work
|
|
self.reopen(opts, {'backing': 'hd2'}, errmsg)
|
|
|
|
# But removing the backing file should always work
|
|
self.reopen(opts, {'backing': None})
|
|
|
|
self.vm.shutdown()
|
|
|
|
# We don't allow setting a backing file that uses a different AioContext if
|
|
# neither of them can switch to the other AioContext
|
|
def test_iothreads_error(self):
|
|
self.run_test_iothreads('iothread0', 'iothread1',
|
|
"Cannot change iothread of active block backend")
|
|
|
|
def test_iothreads_compatible_users(self):
|
|
self.run_test_iothreads('iothread0', 'iothread0')
|
|
|
|
def test_iothreads_switch_backing(self):
|
|
self.run_test_iothreads('iothread0', None)
|
|
|
|
def test_iothreads_switch_overlay(self):
|
|
self.run_test_iothreads(None, 'iothread0')
|
|
|
|
if __name__ == '__main__':
|
|
iotests.activate_logging()
|
|
iotests.main(supported_fmts=["qcow2"],
|
|
supported_protocols=["file"])
|