The stress test for an NBD client. The NBD server is disconnected after a client write operation. The NBD client should reconnect and retry the operation.
Suggested-by: Denis V. Lunev <d...@openvz.org> Signed-off-by: Andrey Shinkevich <andrey.shinkev...@virtuozzo.com> --- tests/qemu-iotests/277 | 91 ++++++++++++++++++++++++++++++++++++++++++++++ tests/qemu-iotests/277.out | 7 ++++ tests/qemu-iotests/group | 1 + 3 files changed, 99 insertions(+) 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..46a29b7 --- /dev/null +++ b/tests/qemu-iotests/277 @@ -0,0 +1,91 @@ +#!/usr/bin/env python +# +# Test nbd client reconnect +# +# 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 <http://www.gnu.org/licenses/>. +# + +import os +import sys +import io +import subprocess +import iotests +from iotests import file_path, log + + +def start_server_NBD(nbd_sock, conf_file): + 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: {}'.format(line.rstrip())) + + return srv + + +def check_server_NBD(srv): + exitcode = srv.wait(timeout=10) + + if exitcode < 0: + sys.stderr.write('NBD server: ERROR %i\n' % (-exitcode)) + log(srv.communicate()[0]) + else: + line = srv.stdout.readline() + log('NBD server: ' + line.rstrip()) + + os.remove(nbd_sock) + os.remove(conf_file) + + +def make_conf_file(conf_file, event): + if os.path.exists(conf_file): + os.remove(conf_file) + + with open(conf_file, "w+") as conff: + conff.write("[inject-error]\nevent={}\nwhen=after".format(event)) + + +disk, nbd_sock = file_path('disk', 'nbd-sock') +nbd_uri = 'nbd+unix:///?socket=' + nbd_sock +if os.path.exists(nbd_sock): + os.remove(nbd_sock) + +conf_file = os.path.join(iotests.test_dir, "nbd-fault-injector.conf") +make_conf_file(conf_file, "data") +srv = start_server_NBD(nbd_sock, conf_file) + +log('NBD client: QEMU-IO write') +args = iotests.qemu_io_args + ['-f', 'raw', '-c', 'write -P 0x7 0 3M', nbd_uri] +clt = subprocess.Popen(args, stdout=subprocess.PIPE, stderr=subprocess.STDOUT) + +check_server_NBD(srv) + +make_conf_file(conf_file, "reply") +srv = start_server_NBD(nbd_sock, conf_file) + +exitcode = clt.wait(timeout=10) +if exitcode < 0: + sys.stderr.write('qemu-io received signal %i: %s\n' % + (-exitcode, ' '.join(args))) + +for line in io.TextIOWrapper(clt.stdout, encoding="utf-8"): + if "3 MiB" not in line: + log('NBD client: ' + line.rstrip()) + +check_server_NBD(srv) diff --git a/tests/qemu-iotests/277.out b/tests/qemu-iotests/277.out new file mode 100644 index 0000000..07e6e82 --- /dev/null +++ b/tests/qemu-iotests/277.out @@ -0,0 +1,7 @@ +NBD server: started +NBD client: QEMU-IO write +NBD server: Closing connection on rule match inject-error +NBD server: started +NBD client: Connection closed +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 af322af..22ef1b8 100644 --- a/tests/qemu-iotests/group +++ b/tests/qemu-iotests/group @@ -282,3 +282,4 @@ 267 rw auto quick snapshot 268 rw auto quick 270 rw backing quick +277 rw -- 1.8.3.1
