| 1 | #!/usr/bin/env python3 |
| 2 | # group: rw quick |
| 3 | # |
| 4 | # Test the rate limit of QMP events |
| 5 | # |
| 6 | # Copyright (C) 2016 Igalia, S.L. |
| 7 | # Author: Alberto Garcia <berto@igalia.com> |
| 8 | # |
| 9 | # This program is free software; you can redistribute it and/or modify |
| 10 | # it under the terms of the GNU General Public License as published by |
| 11 | # the Free Software Foundation; either version 2 of the License, or |
| 12 | # (at your option) any later version. |
| 13 | # |
| 14 | # This program is distributed in the hope that it will be useful, |
| 15 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | # GNU General Public License for more details. |
| 18 | # |
| 19 | # You should have received a copy of the GNU General Public License |
| 20 | # along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 21 | # |
| 22 | |
| 23 | import os |
| 24 | import iotests |
| 25 | |
| 26 | imgs = (os.path.join(iotests.test_dir, 'quorum0.img'), |
| 27 | os.path.join(iotests.test_dir, 'quorum1.img'), |
| 28 | os.path.join(iotests.test_dir, 'quorum2.img')) |
| 29 | |
| 30 | img_conf = (os.path.join(iotests.test_dir, 'quorum0.conf'), |
| 31 | os.path.join(iotests.test_dir, 'quorum1.conf'), |
| 32 | os.path.join(iotests.test_dir, 'quorum2.conf')) |
| 33 | |
| 34 | event_rate = 1000000000 |
| 35 | sector_size = 512 |
| 36 | offset = 10 |
| 37 | |
| 38 | class TestQuorumEvents(iotests.QMPTestCase): |
| 39 | read_pattern = 'quorum' |
| 40 | |
| 41 | def create_blkdebug_file(self, blkdebug_file, bad_sector): |
| 42 | file = open(blkdebug_file, 'w') |
| 43 | file.write(''' |
| 44 | [inject-error] |
| 45 | event = "read_aio" |
| 46 | errno = "5" |
| 47 | sector = "%d" |
| 48 | ''' % bad_sector) |
| 49 | file.close() |
| 50 | |
| 51 | @iotests.skip_if_unsupported(['quorum']) |
| 52 | def setUp(self): |
| 53 | driveopts = ['driver=quorum', 'vote-threshold=2'] |
| 54 | driveopts.append('read-pattern=%s' % self.read_pattern) |
| 55 | for i in range(len(imgs)): |
| 56 | iotests.qemu_img('create', '-f', iotests.imgfmt, imgs[i], '1M') |
| 57 | self.create_blkdebug_file(img_conf[i], i + offset) |
| 58 | driveopts.append('children.%d.driver=%s' % (i, iotests.imgfmt)) |
| 59 | driveopts.append('children.%d.file.driver=blkdebug' % i) |
| 60 | driveopts.append('children.%d.file.config=%s' % (i, img_conf[i])) |
| 61 | driveopts.append('children.%d.file.image.filename=%s' % (i, imgs[i])) |
| 62 | driveopts.append('children.%d.node-name=img%d' % (i, i)) |
| 63 | self.vm = iotests.VM() |
| 64 | self.vm.add_drive(None, opts = ','.join(driveopts)) |
| 65 | self.vm.launch() |
| 66 | |
| 67 | def tearDown(self): |
| 68 | self.vm.shutdown() |
| 69 | for i in range(len(imgs)): |
| 70 | os.remove(imgs[i]) |
| 71 | os.remove(img_conf[i]) |
| 72 | |
| 73 | def do_check_event(self, node, sector = 0): |
| 74 | if node == None: |
| 75 | self.assertEqual(self.vm.get_qmp_event(), None) |
| 76 | return |
| 77 | |
| 78 | for event in self.vm.get_qmp_events(wait=True): |
| 79 | if event['event'] == 'QUORUM_REPORT_BAD': |
| 80 | self.assert_qmp(event, 'data/node-name', node) |
| 81 | self.assert_qmp(event, 'data/sector-num', sector) |
| 82 | |
| 83 | def testQuorum(self): |
| 84 | # Generate an error and get an event |
| 85 | self.vm.hmp_qemu_io("drive0", "aio_read %d %d" % |
| 86 | (offset * sector_size, sector_size)) |
| 87 | self.vm.qtest("clock_step 10") |
| 88 | self.do_check_event('img0', offset) |
| 89 | |
| 90 | # I/O errors in the same child: only one event is emitted |
| 91 | delay = 10 |
| 92 | for i in range(3): |
| 93 | self.vm.hmp_qemu_io("drive0", "aio_read %d %d" % |
| 94 | (offset * sector_size, sector_size)) |
| 95 | self.vm.qtest("clock_step %d" % delay) |
| 96 | self.do_check_event(None) |
| 97 | |
| 98 | # Wait enough so the event is finally emitted |
| 99 | self.vm.qtest("clock_step %d" % (2 * event_rate)) |
| 100 | self.do_check_event('img0', offset) |
| 101 | |
| 102 | # I/O errors in the same child: all events are emitted |
| 103 | delay = 2 * event_rate |
| 104 | for i in range(3): |
| 105 | self.vm.hmp_qemu_io("drive0", "aio_read %d %d" % |
| 106 | (offset * sector_size, sector_size)) |
| 107 | self.vm.qtest("clock_step %d" % delay) |
| 108 | self.do_check_event('img0', offset) |
| 109 | |
| 110 | # I/O errors in different children: all events are emitted |
| 111 | delay = 10 |
| 112 | for i in range(len(imgs)): |
| 113 | self.vm.hmp_qemu_io("drive0", "aio_read %d %d" % |
| 114 | ((offset + i) * sector_size, sector_size)) |
| 115 | self.vm.qtest("clock_step %d" % delay) |
| 116 | # In fifo mode only errors in the first child are detected |
| 117 | if i > 0 and self.read_pattern == 'fifo': |
| 118 | self.do_check_event(None) |
| 119 | else: |
| 120 | self.do_check_event('img%d' % i, offset + i) |
| 121 | |
| 122 | # I/O errors in different children: all events are emitted |
| 123 | delay = 2 * event_rate |
| 124 | for i in range(len(imgs)): |
| 125 | self.vm.hmp_qemu_io("drive0", "aio_read %d %d" % |
| 126 | ((offset + i) * sector_size, sector_size)) |
| 127 | self.vm.qtest("clock_step %d" % delay) |
| 128 | # In fifo mode only errors in the first child are detected |
| 129 | if i > 0 and self.read_pattern == 'fifo': |
| 130 | self.do_check_event(None) |
| 131 | else: |
| 132 | self.do_check_event('img%d' % i, offset + i) |
| 133 | |
| 134 | # No more pending events |
| 135 | self.do_check_event(None) |
| 136 | |
| 137 | class TestFifoQuorumEvents(TestQuorumEvents): |
| 138 | read_pattern = 'fifo' |
| 139 | |
| 140 | if __name__ == '__main__': |
| 141 | iotests.verify_quorum() |
| 142 | iotests.main(supported_fmts=["raw"], |
| 143 | supported_protocols=["file"], |
| 144 | require_hmp=True) |