6 # Copyright (c) 2019 Virtuozzo International GmbH.
8 # This program is free software; you can redistribute it and/or modify
9 # it under the terms of the GNU General Public License as published by
10 # the Free Software Foundation; either version 2 of the License, or
11 # (at your option) any later version.
13 # This program is distributed in the hope that it will be useful,
14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 # GNU General Public License for more details.
18 # You should have received a copy of the GNU General Public License
19 # along with this program. If not, see <http://www.gnu.org/licenses/>.
26 from iotests import qemu_img_create, file_path, qemu_nbd_popen
28 disk_a, disk_b = file_path('disk_a', 'disk_b')
29 nbd_sock = file_path('nbd-sock', base_dir=iotests.sock_dir)
30 nbd_uri = 'nbd+unix:///?socket=' + nbd_sock
35 class TestNbdReconnect(iotests.QMPTestCase):
36 def init_vm(self, disk_size):
37 qemu_img_create('-f', iotests.imgfmt, disk_a, str(disk_size))
38 qemu_img_create('-f', iotests.imgfmt, disk_b, str(disk_size))
39 self.vm = iotests.VM().add_drive(disk_a)
41 self.vm.hmp_qemu_io('drive0', 'write 0 {}'.format(disk_size))
48 def start_job(self, job):
49 """Stat job with nbd target and kill the server"""
50 assert job in ('blockdev-backup', 'blockdev-mirror')
51 with qemu_nbd_popen('-k', nbd_sock, '-f', iotests.imgfmt, disk_b):
52 self.vm.cmd('blockdev-add',
53 {'node-name': 'backup0',
55 'file': {'driver': 'nbd',
56 'server': {'type': 'unix',
58 'reconnect-delay': 10}})
59 self.vm.cmd(job, device='drive0',
60 sync='full', target='backup0',
61 speed=(1 * 1024 * 1024))
63 # Wait for some progress
66 jobs = self.vm.qmp('query-block-jobs')['return']
67 if jobs and jobs[0]['offset'] > 0:
72 self.assertTrue(jobs and jobs[0]['offset'] > 0) # job started
74 jobs = self.vm.qmp('query-block-jobs')['return']
75 # Check that job is still in progress
77 self.assertTrue(jobs[0]['offset'] < jobs[0]['len'])
79 self.vm.cmd('block-job-set-speed', device='drive0', speed=0)
81 # Emulate server down time for 1 second
84 def test_backup(self):
85 size = 5 * 1024 * 1024
87 self.start_job('blockdev-backup')
89 with qemu_nbd_popen('-k', nbd_sock, '-f', iotests.imgfmt, disk_b):
90 e = self.vm.event_wait('BLOCK_JOB_COMPLETED')
91 self.assertEqual(e['data']['offset'], size)
92 self.vm.cmd('blockdev-del', node_name='backup0')
95 self.vm.cmd('block-job-cancel', device='drive0', force=True)
98 self.vm.event_wait('BLOCK_JOB_CANCELLED')
99 delta_t = time.time() - start_t
100 self.assertTrue(delta_t < 5.0)
102 def test_mirror_cancel(self):
103 # Mirror speed limit doesn't work well enough, it seems that mirror
104 # will run many parallel requests anyway. MAX_IN_FLIGHT is 16 and
105 # MAX_IO_BYTES is 1M in mirror.c, so let's use 20M disk.
106 self.init_vm(20 * 1024 * 1024)
107 self.start_job('blockdev-mirror')
110 def test_backup_cancel(self):
111 self.init_vm(5 * 1024 * 1024)
112 self.start_job('blockdev-backup')
116 if __name__ == '__main__':
117 iotests.main(supported_fmts=['qcow2'])