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#!/usr/bin/env python
#
# Tests for qmp command nbd-server-remove.
#
# Copyright (c) 2017 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 sys
import iotests
import time
from iotests import qemu_img_create, qemu_io, filter_qemu_io, QemuIoInteractive
nbd_sock = 'nbd_sock'
nbd_uri = 'nbd+unix:///exp?socket=' + nbd_sock
disk = os.path.join(iotests.test_dir, 'disk')
class TestNbdServerRemove(iotests.QMPTestCase):
def setUp(self):
qemu_img_create('-f', iotests.imgfmt, disk, '1M')
self.vm = iotests.VM().add_drive(disk)
self.vm.launch()
address = {
'type': 'unix',
'data': {
'path': nbd_sock
}
}
result = self.vm.qmp('nbd-server-start', addr=address)
self.assert_qmp(result, 'return', {})
result = self.vm.qmp('nbd-server-add', device='drive0', name='exp')
self.assert_qmp(result, 'return', {})
def tearDown(self):
self.vm.shutdown()
os.remove(nbd_sock)
os.remove(disk)
def remove_export(self, name, mode=None):
if mode is None:
return self.vm.qmp('nbd-server-remove', name=name)
else:
return self.vm.qmp('nbd-server-remove', name=name, mode=mode)
def assertExportNotFound(self, name):
result = self.vm.qmp('nbd-server-remove', name=name)
self.assert_qmp(result, 'error/desc', "Export 'exp' is not found")
def assertExistingClients(self, result):
self.assert_qmp(result, 'error/desc', "export 'exp' still in use")
def assertReadOk(self, qemu_io_output):
self.assertEqual(
filter_qemu_io(qemu_io_output).strip(),
'read 512/512 bytes at offset 0\n' +
'512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)')
def assertReadFailed(self, qemu_io_output):
self.assertEqual(filter_qemu_io(qemu_io_output).strip(),
'read failed: Input/output error')
def assertConnectFailed(self, qemu_io_output):
self.assertEqual(filter_qemu_io(qemu_io_output).strip(),
"can't open device " + nbd_uri +
": Requested export not available\n"
"server reported: export 'exp' not present")
def do_test_connect_after_remove(self, mode=None):
args = ('-r', '-f', 'raw', '-c', 'read 0 512', nbd_uri)
self.assertReadOk(qemu_io(*args))
result = self.remove_export('exp', mode)
self.assert_qmp(result, 'return', {})
self.assertExportNotFound('exp')
self.assertConnectFailed(qemu_io(*args))
def test_connect_after_remove_default(self):
self.do_test_connect_after_remove()
def test_connect_after_remove_safe(self):
self.do_test_connect_after_remove('safe')
def test_connect_after_remove_force(self):
self.do_test_connect_after_remove('hard')
def do_test_remove_during_connect_safe(self, mode=None):
qio = QemuIoInteractive('-r', '-f', 'raw', nbd_uri)
self.assertReadOk(qio.cmd('read 0 512'))
result = self.remove_export('exp', mode)
self.assertExistingClients(result)
self.assertReadOk(qio.cmd('read 0 512'))
qio.close()
result = self.remove_export('exp', mode)
self.assert_qmp(result, 'return', {})
self.assertExportNotFound('exp')
def test_remove_during_connect_default(self):
self.do_test_remove_during_connect_safe()
def test_remove_during_connect_safe(self):
self.do_test_remove_during_connect_safe('safe')
def test_remove_during_connect_hard(self):
qio = QemuIoInteractive('-r', '-f', 'raw', nbd_uri)
self.assertReadOk(qio.cmd('read 0 512'))
result = self.remove_export('exp', 'hard')
self.assert_qmp(result, 'return', {})
self.assertReadFailed(qio.cmd('read 0 512'))
self.assertExportNotFound('exp')
qio.close()
def test_remove_during_connect_safe_hard(self):
qio = QemuIoInteractive('-r', '-f', 'raw', nbd_uri)
self.assertReadOk(qio.cmd('read 0 512'))
result = self.remove_export('exp', 'safe')
self.assertExistingClients(result)
self.assertReadOk(qio.cmd('read 0 512'))
result = self.remove_export('exp', 'hard')
self.assert_qmp(result, 'return', {})
self.assertExportNotFound('exp')
self.assertReadFailed(qio.cmd('read 0 512'))
qio.close()
if __name__ == '__main__':
iotests.main()
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