From nobody Mon Feb 9 11:33:07 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=virtuozzo.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 153028807203924.707284423571764; Fri, 29 Jun 2018 09:01:12 -0700 (PDT) Received: from localhost ([::1]:43163 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fYvpf-0003Lo-6j for importer@patchew.org; Fri, 29 Jun 2018 12:01:11 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:40088) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fYv7U-0001G6-RD for qemu-devel@nongnu.org; Fri, 29 Jun 2018 11:15:34 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fYv7R-0006AR-E9 for qemu-devel@nongnu.org; Fri, 29 Jun 2018 11:15:32 -0400 Received: from relay.sw.ru ([185.231.240.75]:44516) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fYv7Q-000638-Un; Fri, 29 Jun 2018 11:15:29 -0400 Received: from vz-out.virtuozzo.com ([185.231.240.5] helo=kvm.sw.ru) by relay.sw.ru with esmtp (Exim 4.90_1) (envelope-from ) id 1fYv7N-0003YF-DX; Fri, 29 Jun 2018 18:15:25 +0300 From: Vladimir Sementsov-Ogievskiy To: qemu-devel@nongnu.org, qemu-block@nongnu.org Date: Fri, 29 Jun 2018 18:15:24 +0300 Message-Id: <20180629151524.138542-4-vsementsov@virtuozzo.com> X-Mailer: git-send-email 2.11.1 In-Reply-To: <20180629151524.138542-1-vsementsov@virtuozzo.com> References: <20180629151524.138542-1-vsementsov@virtuozzo.com> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 185.231.240.75 Subject: [Qemu-devel] [PATCH v2 3/3] qemu-iotests: Image fleecing test case 222 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kwolf@redhat.com, vsementsov@virtuozzo.com, famz@redhat.com, armbru@redhat.com, mreitz@redhat.com, den@openvz.org, jsnow@redhat.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" From: Fam Zheng This tests the workflow of creating a lightweight point-in-time snapshot with blockdev-backup command, and exporting it with built-in NBD server. It's tested that any post-snapshot writing to the original device doesn't change data seen in NBD target. Signed-off-by: Fam Zheng [vsementsov: add -f iotests.imgfmt to qemu_io, fix target_img to be always qcow2, add -r to qemu_io for nbd, add fleecing-filter layer, wrap long lines] Signed-off-by: Vladimir Sementsov-Ogievskiy --- tests/qemu-iotests/222 | 112 +++++++++++++++++++++++++++++++++++++++++= ++++ tests/qemu-iotests/222.out | 5 ++ tests/qemu-iotests/group | 1 + 3 files changed, 118 insertions(+) create mode 100755 tests/qemu-iotests/222 create mode 100644 tests/qemu-iotests/222.out diff --git a/tests/qemu-iotests/222 b/tests/qemu-iotests/222 new file mode 100755 index 0000000000..3bcf9505fd --- /dev/null +++ b/tests/qemu-iotests/222 @@ -0,0 +1,112 @@ +#!/usr/bin/env python +# +# Tests for image fleecing (point in time snapshot export to NBD) +# +# Copyright (C) 2014 Red Hat, Inc. +# +# Based on 055. +# +# 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 time +import os +import iotests +from iotests import qemu_img, qemu_io + +test_img =3D os.path.join(iotests.test_dir, 'test.img') +target_img =3D os.path.join(iotests.test_dir, 'target.img') +nbd_sock =3D os.path.join(iotests.test_dir, 'nbd.sock') + +class TestImageFleecing(iotests.QMPTestCase): + image_len =3D 64 * 1024 * 1024 # MB + + def setUp(self): + # Write data to the image so we can compare later + qemu_img('create', '-f', iotests.imgfmt, test_img, + str(TestImageFleecing.image_len)) + self.patterns =3D [ + ("0x5d", "0", "64k"), + ("0xd5", "1M", "64k"), + ("0xdc", "32M", "64k"), + ("0xdc", "67043328", "64k")] + + for p in self.patterns: + qemu_io('-f', iotests.imgfmt, '-c', 'write -P%s %s %s' % p, + test_img) + + qemu_img('create', '-f', 'qcow2', target_img, + str(TestImageFleecing.image_len)) + + self.vm =3D iotests.VM().add_drive(test_img) + self.vm.launch() + + self.overwrite_patterns =3D [ + ("0xa0", "0", "64k"), + ("0x0a", "1M", "64k"), + ("0x55", "32M", "64k"), + ("0x56", "67043328", "64k")] + + self.nbd_uri =3D "nbd+unix:///drive1?socket=3D%s" % nbd_sock + + def tearDown(self): + self.vm.shutdown() + os.remove(test_img) + os.remove(target_img) + + def verify_patterns(self): + for p in self.patterns: + self.assertEqual( + -1, + qemu_io(self.nbd_uri, '-r', '-c', 'read -P%s %s %s' % = p) + .find("verification failed"), + "Failed to verify pattern: %s %s %s" % p) + + def test_image_fleecing(self): + result =3D self.vm.qmp("blockdev-add", **{ + "driver": "fleecing-filter", + "node-name": "drive1", + "file": { + "driver": "qcow2", + "file": { + "driver": "file", + "filename": target_img, + }, + "backing": "drive0", + } + }) + self.assert_qmp(result, 'return', {}) + + result =3D self.vm.qmp( + "nbd-server-start", + **{"addr": { "type": "unix", "data": { "path": nbd_sock } = } }) + self.assert_qmp(result, 'return', {}) + result =3D self.vm.qmp("blockdev-backup", device=3D"drive0", + target=3D"drive1", sync=3D"none") + self.assert_qmp(result, 'return', {}) + result =3D self.vm.qmp("nbd-server-add", device=3D"drive1") + self.assert_qmp(result, 'return', {}) + + self.verify_patterns() + + for p in self.overwrite_patterns: + self.vm.hmp_qemu_io("drive0", "write -P%s %s %s" % p) + + self.verify_patterns() + + self.cancel_and_wait(resume=3DTrue) + self.assert_no_active_block_jobs() + +if __name__ =3D=3D '__main__': + iotests.main(supported_fmts=3D['raw', 'qcow2']) diff --git a/tests/qemu-iotests/222.out b/tests/qemu-iotests/222.out new file mode 100644 index 0000000000..ae1213e6f8 --- /dev/null +++ b/tests/qemu-iotests/222.out @@ -0,0 +1,5 @@ +. +---------------------------------------------------------------------- +Ran 1 tests + +OK diff --git a/tests/qemu-iotests/group b/tests/qemu-iotests/group index eea75819d2..8019a9f721 100644 --- a/tests/qemu-iotests/group +++ b/tests/qemu-iotests/group @@ -220,3 +220,4 @@ 218 rw auto quick 219 rw auto 221 rw auto quick +222 rw auto quick --=20 2.11.1