From patchwork Mon Nov 11 10:04:23 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrey Shinkevich X-Patchwork-Id: 1192852 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=virtuozzo.com Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 47BRMd5tZ1z9sPV for ; Mon, 11 Nov 2019 21:05:33 +1100 (AEDT) Received: from localhost ([::1]:50400 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iU6Zf-0000qO-Mq for incoming@patchwork.ozlabs.org; Mon, 11 Nov 2019 05:05:31 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:45592) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iU6Yk-0000BX-UF for qemu-devel@nongnu.org; Mon, 11 Nov 2019 05:04:36 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iU6Yj-0005gE-4D for qemu-devel@nongnu.org; Mon, 11 Nov 2019 05:04:34 -0500 Received: from relay.sw.ru ([185.231.240.75]:45866) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iU6Yi-0005fl-T2; Mon, 11 Nov 2019 05:04:33 -0500 Received: from dhcp-172-16-25-136.sw.ru ([172.16.25.136]) by relay.sw.ru with esmtp (Exim 4.92.3) (envelope-from ) id 1iU6YZ-0001od-Jd; Mon, 11 Nov 2019 13:04:23 +0300 From: Andrey Shinkevich To: qemu-devel@nongnu.org, qemu-block@nongnu.org Subject: [PATCH v4] iotests: Test NBD client reconnection Date: Mon, 11 Nov 2019 13:04:23 +0300 Message-Id: <1573466663-626788-1-git-send-email-andrey.shinkevich@virtuozzo.com> X-Mailer: git-send-email 1.8.3.1 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 185.231.240.75 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kwolf@redhat.com, vsementsov@virtuozzo.com, mreitz@redhat.com, rkagan@virtuozzo.com, andrey.shinkevich@virtuozzo.com, den@openvz.org Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" The test for an NBD client. The NBD server is disconnected after the client write request. The NBD client should reconnect and complete the write operation. Suggested-by: Denis V. Lunev Suggested-by: Vladimir Sementsov-Ogievskiy Signed-off-by: Andrey Shinkevich Reviewed-by: Eric Blake Tested-by: Eric Blake --- v3 was discussed in the email thread with the message ID <1572627272-23359-1-git-send-email-andrey.shinkevich@virtuozzo.com> tests/qemu-iotests/277 | 96 ++++++++++++++++++++++++++++++++ tests/qemu-iotests/277.out | 6 ++ tests/qemu-iotests/group | 1 + tests/qemu-iotests/iotests.py | 5 ++ tests/qemu-iotests/nbd-fault-injector.py | 3 +- 5 files changed, 110 insertions(+), 1 deletion(-) create mode 100755 tests/qemu-iotests/277 create mode 100644 tests/qemu-iotests/277.out diff --git a/tests/qemu-iotests/277 b/tests/qemu-iotests/277 new file mode 100755 index 0000000..621060b --- /dev/null +++ b/tests/qemu-iotests/277 @@ -0,0 +1,96 @@ +#!/usr/bin/env python +# +# Test NBD client reconnection +# +# Copyright (c) 2019 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 . +# + +import os +import subprocess +import iotests +from iotests import file_path, log + + +nbd_sock, conf_file = file_path('nbd-sock', "nbd-fault-injector.conf") + + +def make_conf_file(event): + """ + Create configuration file for the nbd-fault-injector.py + + :param event: which event the server should close a connection on + """ + with open(conf_file, "w") as conff: + conff.write("[inject-error]\nevent={}\nwhen=after".format(event)) + + +def start_server_NBD(event): + make_conf_file(event) + + srv = subprocess.Popen(["nbd-fault-injector.py", "--classic-negotiation", + nbd_sock, conf_file], stdout=subprocess.PIPE, + stderr=subprocess.STDOUT, universal_newlines=True) + line = srv.stdout.readline() + if "Listening on " in line: + log('NBD server: started') + else: + log('NBD server: ' + line.rstrip()) + + return srv + + +def start_client_NBD(): + log('NBD client: QEMU-IO write') + args = iotests.qemu_io_args_no_fmt + \ + ['-c', 'write -P 0x7 0 3M', '--image-opts', + 'driver=nbd,server.type=unix,server.path={},' + 'reconnect-delay=7'.format(nbd_sock)] + clt = subprocess.Popen(args, stdout=subprocess.PIPE, + stderr=subprocess.STDOUT, + universal_newlines=True) + return clt + + +def check_proc_NBD(proc, connector): + try: + outs, errs = proc.communicate(timeout=10) + + if proc.returncode < 0: + log('NBD {}: EXIT SIGNAL {}\n'.format(connector, proc.returncode)) + log(outs) + else: + msg = outs.split("\n", 1) + log('NBD {}: {}'.format(connector, msg[0])) + + except subprocess.TimeoutExpired: + proc.kill() + log('NBD {}: ERROR timeout expired'.format(connector)) + finally: + if connector == 'server': + os.remove(nbd_sock) + os.remove(conf_file) + + +srv = start_server_NBD('data') +clt = start_client_NBD() +# The server should close the connection after a client write request +check_proc_NBD(srv, 'server') +# Start the NBD server again +srv = start_server_NBD('reply') +# The client should reconnect and complete the write operation +check_proc_NBD(clt, 'client') +# Make it sure that server terminated +check_proc_NBD(srv, 'server') diff --git a/tests/qemu-iotests/277.out b/tests/qemu-iotests/277.out new file mode 100644 index 0000000..45404b3 --- /dev/null +++ b/tests/qemu-iotests/277.out @@ -0,0 +1,6 @@ +NBD server: started +NBD client: QEMU-IO write +NBD server: Closing connection on rule match inject-error +NBD server: started +NBD client: wrote 3145728/3145728 bytes at offset 0 +NBD server: Closing connection on rule match inject-error diff --git a/tests/qemu-iotests/group b/tests/qemu-iotests/group index 0650403..20f7412 100644 --- a/tests/qemu-iotests/group +++ b/tests/qemu-iotests/group @@ -284,3 +284,4 @@ 268 rw auto quick 270 rw backing quick 272 rw +277 rw diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py index 075f473..295b3e4 100644 --- a/tests/qemu-iotests/iotests.py +++ b/tests/qemu-iotests/iotests.py @@ -47,6 +47,11 @@ qemu_io_args = [os.environ.get('QEMU_IO_PROG', 'qemu-io')] if os.environ.get('QEMU_IO_OPTIONS'): qemu_io_args += os.environ['QEMU_IO_OPTIONS'].strip().split(' ') +qemu_io_args_no_fmt = [os.environ.get('QEMU_IO_PROG', 'qemu-io')] +if os.environ.get('QEMU_IO_OPTIONS_NO_FMT'): + qemu_io_args_no_fmt += \ + os.environ['QEMU_IO_OPTIONS_NO_FMT'].strip().split(' ') + qemu_nbd_args = [os.environ.get('QEMU_NBD_PROG', 'qemu-nbd')] if os.environ.get('QEMU_NBD_OPTIONS'): qemu_nbd_args += os.environ['QEMU_NBD_OPTIONS'].strip().split(' ') diff --git a/tests/qemu-iotests/nbd-fault-injector.py b/tests/qemu-iotests/nbd-fault-injector.py index 6b2d659..7e2dab6 100755 --- a/tests/qemu-iotests/nbd-fault-injector.py +++ b/tests/qemu-iotests/nbd-fault-injector.py @@ -115,7 +115,8 @@ class FaultInjectionSocket(object): if rule.match(event, io): if rule.when == 0 or bufsize is None: print('Closing connection on rule match %s' % rule.name) - self.sock.flush() + self.sock.close() + sys.stdout.flush() sys.exit(0) if rule.when != -1: return rule.when