3 # Test the rate limit of QMP events
5 # Copyright (C) 2016 Igalia, S.L.
6 # Author: Alberto Garcia <berto@igalia.com>
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/>.
25 imgs = (os.path.join(iotests.test_dir, 'quorum0.img'),
26 os.path.join(iotests.test_dir, 'quorum1.img'),
27 os.path.join(iotests.test_dir, 'quorum2.img'))
29 img_conf = (os.path.join(iotests.test_dir, 'quorum0.conf'),
30 os.path.join(iotests.test_dir, 'quorum1.conf'),
31 os.path.join(iotests.test_dir, 'quorum2.conf'))
33 event_rate = 1000000000
37 class TestQuorumEvents(iotests.QMPTestCase):
38 read_pattern = 'quorum'
40 def create_blkdebug_file(self, blkdebug_file, bad_sector):
41 file = open(blkdebug_file, 'w')
50 @iotests.skip_if_unsupported(['quorum'])
52 driveopts = ['driver=quorum', 'vote-threshold=2']
53 driveopts.append('read-pattern=%s' % self.read_pattern)
54 for i in range(len(imgs)):
55 iotests.qemu_img('create', '-f', iotests.imgfmt, imgs[i], '1M')
56 self.create_blkdebug_file(img_conf[i], i + offset)
57 driveopts.append('children.%d.driver=%s' % (i, iotests.imgfmt))
58 driveopts.append('children.%d.file.driver=blkdebug' % i)
59 driveopts.append('children.%d.file.config=%s' % (i, img_conf[i]))
60 driveopts.append('children.%d.file.image.filename=%s' % (i, imgs[i]))
61 driveopts.append('children.%d.node-name=img%d' % (i, i))
62 self.vm = iotests.VM()
63 self.vm.add_drive(None, opts = ','.join(driveopts))
68 for i in range(len(imgs)):
70 os.remove(img_conf[i])
72 def do_check_event(self, node, sector = 0):
74 self.assertEqual(self.vm.get_qmp_event(), None)
77 for event in self.vm.get_qmp_events(wait=True):
78 if event['event'] == 'QUORUM_REPORT_BAD':
79 self.assert_qmp(event, 'data/node-name', node)
80 self.assert_qmp(event, 'data/sector-num', sector)
83 # Generate an error and get an event
84 self.vm.hmp_qemu_io("drive0", "aio_read %d %d" %
85 (offset * sector_size, sector_size))
86 self.vm.qtest("clock_step 10")
87 self.do_check_event('img0', offset)
89 # I/O errors in the same child: only one event is emitted
92 self.vm.hmp_qemu_io("drive0", "aio_read %d %d" %
93 (offset * sector_size, sector_size))
94 self.vm.qtest("clock_step %d" % delay)
95 self.do_check_event(None)
97 # Wait enough so the event is finally emitted
98 self.vm.qtest("clock_step %d" % (2 * event_rate))
99 self.do_check_event('img0', offset)
101 # I/O errors in the same child: all events are emitted
102 delay = 2 * event_rate
104 self.vm.hmp_qemu_io("drive0", "aio_read %d %d" %
105 (offset * sector_size, sector_size))
106 self.vm.qtest("clock_step %d" % delay)
107 self.do_check_event('img0', offset)
109 # I/O errors in different children: all events are emitted
111 for i in range(len(imgs)):
112 self.vm.hmp_qemu_io("drive0", "aio_read %d %d" %
113 ((offset + i) * sector_size, sector_size))
114 self.vm.qtest("clock_step %d" % delay)
115 # In fifo mode only errors in the first child are detected
116 if i > 0 and self.read_pattern == 'fifo':
117 self.do_check_event(None)
119 self.do_check_event('img%d' % i, offset + i)
121 # I/O errors in different children: all events are emitted
122 delay = 2 * event_rate
123 for i in range(len(imgs)):
124 self.vm.hmp_qemu_io("drive0", "aio_read %d %d" %
125 ((offset + i) * sector_size, sector_size))
126 self.vm.qtest("clock_step %d" % delay)
127 # In fifo mode only errors in the first child are detected
128 if i > 0 and self.read_pattern == 'fifo':
129 self.do_check_event(None)
131 self.do_check_event('img%d' % i, offset + i)
133 # No more pending events
134 self.do_check_event(None)
136 class TestFifoQuorumEvents(TestQuorumEvents):
137 read_pattern = 'fifo'
139 if __name__ == '__main__':
140 iotests.verify_quorum()
141 iotests.main(supported_fmts=["raw"],
142 supported_protocols=["file"])