This test verifies that the rate-limited QMP events are emitted at a maximum rate of 1 per second as defined in monitor_qapi_event_conf in monitor.c
It also checks that QUORUM_REPORT_BAD events generated from different nodes are kept in separate queues so they don't mask each other. Signed-off-by: Alberto Garcia <be...@igalia.com> Reviewed-by: Max Reitz <mre...@redhat.com> --- tests/qemu-iotests/146 | 129 +++++++++++++++++++++++++++++++++++++++++++++ tests/qemu-iotests/146.out | 5 ++ tests/qemu-iotests/group | 1 + 3 files changed, 135 insertions(+) create mode 100644 tests/qemu-iotests/146 create mode 100644 tests/qemu-iotests/146.out diff --git a/tests/qemu-iotests/146 b/tests/qemu-iotests/146 new file mode 100644 index 0000000..30bc379 --- /dev/null +++ b/tests/qemu-iotests/146 @@ -0,0 +1,129 @@ +#!/usr/bin/env python +# +# Test the rate limit of QMP events +# +# Copyright (C) 2016 Igalia, S.L. +# Author: Alberto Garcia <be...@igalia.com> +# +# 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 iotests + +imgs = (os.path.join(iotests.test_dir, 'quorum0.img'), + os.path.join(iotests.test_dir, 'quorum1.img'), + os.path.join(iotests.test_dir, 'quorum2.img')) + +img_conf = (os.path.join(iotests.test_dir, 'quorum0.conf'), + os.path.join(iotests.test_dir, 'quorum1.conf'), + os.path.join(iotests.test_dir, 'quorum2.conf')) + +event_rate = 1000000000 +sector_size = 512 +offset = 10 + +class TestQuorumEvents(iotests.QMPTestCase): + + def create_blkdebug_file(self, blkdebug_file, bad_sector): + file = open(blkdebug_file, 'w') + file.write(''' +[inject-error] +event = "read_aio" +errno = "5" +sector = "%d" +''' % bad_sector) + file.close() + + def setUp(self): + driveopts = ['driver=quorum', 'vote-threshold=2'] + for i in range(len(imgs)): + iotests.qemu_img('create', '-f', iotests.imgfmt, imgs[i], '1M') + self.create_blkdebug_file(img_conf[i], i + offset) + driveopts.append('children.%d.driver=%s' % (i, iotests.imgfmt)) + driveopts.append('children.%d.file.driver=blkdebug' % i) + driveopts.append('children.%d.file.config=%s' % (i, img_conf[i])) + driveopts.append('children.%d.file.image.filename=%s' % (i, imgs[i])) + driveopts.append('children.%d.node-name=img%d' % (i, i)) + self.vm = iotests.VM() + self.vm.add_drive(None, opts = ','.join(driveopts)) + self.vm.launch() + + def tearDown(self): + self.vm.shutdown() + for i in range(len(imgs)): + os.remove(imgs[i]) + os.remove(img_conf[i]) + + def do_check_event(self, node, sector = 0): + if node == None: + self.assertEqual(self.vm.get_qmp_event(), None) + return + + for event in self.vm.get_qmp_events(wait=True): + if event['event'] == 'QUORUM_REPORT_BAD': + self.assert_qmp(event, 'data/node-name', node) + self.assert_qmp(event, 'data/sector-num', sector) + + def testQuorum(self): + if not 'quorum' in iotests.qemu_img_pipe('--help'): + return + + # Generate an error and get an event + self.vm.hmp_qemu_io("drive0", "aio_read %d %d" % + (offset * sector_size, sector_size)) + self.vm.qtest("clock_step 10") + self.do_check_event('img0', offset) + + # I/O errors in the same child: only one event is emitted + delay = 10 + for i in range(3): + self.vm.hmp_qemu_io("drive0", "aio_read %d %d" % + (offset * sector_size, sector_size)) + self.vm.qtest("clock_step %d" % delay) + self.do_check_event(None) + + # Wait enough so the event is finally emitted + self.vm.qtest("clock_step %d" % (2 * event_rate)) + self.do_check_event('img0', offset) + + # I/O errors in the same child: all events are emitted + delay = 2 * event_rate + for i in range(3): + self.vm.hmp_qemu_io("drive0", "aio_read %d %d" % + (offset * sector_size, sector_size)) + self.vm.qtest("clock_step %d" % delay) + self.do_check_event('img0', offset) + + # I/O errors in different children: all events are emitted + delay = 10 + for i in range(len(imgs)): + self.vm.hmp_qemu_io("drive0", "aio_read %d %d" % + ((offset + i) * sector_size, sector_size)) + self.vm.qtest("clock_step %d" % delay) + self.do_check_event('img%d' % i, offset + i) + + # I/O errors in different children: all events are emitted + delay = 2 * event_rate + for i in range(len(imgs)): + self.vm.hmp_qemu_io("drive0", "aio_read %d %d" % + ((offset + i) * sector_size, sector_size)) + self.vm.qtest("clock_step %d" % delay) + self.do_check_event('img%d' % i, offset + i) + + # No more pending events + self.do_check_event(None) + +if __name__ == '__main__': + iotests.main(supported_fmts=["raw"]) diff --git a/tests/qemu-iotests/146.out b/tests/qemu-iotests/146.out new file mode 100644 index 0000000..ae1213e --- /dev/null +++ b/tests/qemu-iotests/146.out @@ -0,0 +1,5 @@ +. +---------------------------------------------------------------------- +Ran 1 tests + +OK diff --git a/tests/qemu-iotests/group b/tests/qemu-iotests/group index 47fd40c..54e7acc 100644 --- a/tests/qemu-iotests/group +++ b/tests/qemu-iotests/group @@ -148,3 +148,4 @@ 143 auto quick 144 rw auto quick 145 auto quick +146 rw auto quick -- 2.7.0
