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bh=J0RSMoQlFPKoMhJiIrLIMZacDgnHgqBUudsX1B8+tBI=; b=W/3VPkfLvhjptO4ACY1B2Y2CsIbplPHAxGvhi0nrtMvSzME60K4hSP6SAiXIBnPkTZ+4Wn rcfwm7tE4n8nMs5bH3RCQV+6XlwSwlHBF/TsPluxuFcRuViBbcftIGBBftaSQN8+Omr+V8 qo6gk4gX5JKj4VNfgEKyhNTcq/xZSW8= X-MC-Unique: JawOd8NUNIW7oxA7CQ4IhQ-1 From: Max Reitz To: qemu-block@nongnu.org Subject: [PATCH 3/3] iotests/041: x-blockdev-reopen during mirror Date: Wed, 2 Sep 2020 18:48:41 +0200 Message-Id: <20200902164841.214948-4-mreitz@redhat.com> In-Reply-To: <20200902164841.214948-1-mreitz@redhat.com> References: <20200902164841.214948-1-mreitz@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=mreitz@redhat.com X-Mimecast-Spam-Score: 0.001 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; 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charset="utf-8" Test what happens when you remove the backing file during a mirror with sync=3Dtop. Signed-off-by: Max Reitz --- tests/qemu-iotests/041 | 92 ++++++++++++++++++++++++++++++++++++++ tests/qemu-iotests/041.out | 4 +- 2 files changed, 94 insertions(+), 2 deletions(-) diff --git a/tests/qemu-iotests/041 b/tests/qemu-iotests/041 index cdbef3ba20..4ed7e293ae 100755 --- a/tests/qemu-iotests/041 +++ b/tests/qemu-iotests/041 @@ -1432,6 +1432,98 @@ class TestFilters(iotests.QMPTestCase): self.complete_and_wait('mirror') =20 =20 +class TestReconfDuringMirror(iotests.QMPTestCase): + def setUp(self): + qemu_img('create', '-f', iotests.imgfmt, backing_img, '1M') + qemu_img('create', '-f', iotests.imgfmt, '-b', backing_img, + '-F', iotests.imgfmt, test_img) + + qemu_io('-c', 'write -P 1 0 1M', test_img) + + self.vm =3D iotests.VM() + self.vm.launch() + + blockdevs =3D ( + { 'node-name': 'backing-file', + 'driver': 'file', + 'filename': backing_img }, + + { 'node-name': 'backing', + 'driver': iotests.imgfmt, + 'file': 'backing-file', + 'read-only': True }, + + { 'node-name': 'source-file', + 'driver': 'file', + 'filename': test_img }, + + { 'node-name': 'source', + 'driver': iotests.imgfmt, + 'file': 'source-file', + 'backing': 'backing' } + ) + + for blockdev in blockdevs: + result =3D self.vm.qmp('blockdev-add', **blockdev) + self.assert_qmp(result, 'return', {}) + + def tearDown(self): + self.vm.shutdown() + + os.remove(test_img) + os.remove(backing_img) + + try: + os.remove(target_img) + except OSError: + pass + + def test_reconf_during_top_mirror(self): + result =3D self.vm.qmp('drive-mirror', + job_id=3D'mirror', + device=3D'source', + sync=3D'top', + target=3Dtarget_img, + speed=3D65536) + self.assert_qmp(result, 'return', {}) + + result =3D self.vm.qmp('x-blockdev-reopen', + **{ 'node-name': 'source', + 'driver': iotests.imgfmt, + 'file': 'source-file', + 'backing': None }) + if 'error' in result: + self.assert_qmp(result, 'error/desc', + "Cannot change 'backing' link " + "from 'source' to 'backing'") + + result =3D self.vm.qmp('block-job-set-speed', + device=3D'mirror', speed=3D0) + self.assert_qmp(result, 'return', {}) + + self.complete_and_wait('mirror') + + # Pass + return + + # This is not expected. Let's see what happens when we drop + # the backing file altogether. + for node in ('backing', 'backing-file'): + result =3D self.vm.qmp('blockdev-del', node_name=3Dnode) + self.assert_qmp(result, 'return', {}) + + result =3D self.vm.qmp('block-job-set-speed', + device=3D'mirror', speed=3D0) + self.assert_qmp(result, 'return', {}) + + # Completing will now probably result in a segfault, because + # it tries to assign 'backing' as the target's backing node + self.complete_and_wait('mirror') + + # Either way, this is a failure. + self.fail('x-blockdev-reopen should not have succeeded') + + if __name__ =3D=3D '__main__': iotests.main(supported_fmts=3D['qcow2', 'qed'], supported_protocols=3D['file'], diff --git a/tests/qemu-iotests/041.out b/tests/qemu-iotests/041.out index 46651953e8..5273ce86c3 100644 --- a/tests/qemu-iotests/041.out +++ b/tests/qemu-iotests/041.out @@ -1,5 +1,5 @@ -..........................................................................= ................................. +..........................................................................= .................................. ---------------------------------------------------------------------- -Ran 107 tests +Ran 108 tests =20 OK --=20 2.26.2