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bh=XBNUYpnT1IMMAVkq6p8YgAKSruJUdmRCdPkNhXDUC88=; b=UdlJ+V453IjjI9DrJIqaT411xFtmoGDQeeQ47FHdE4pr56D48pKZaBYRlFmZ9zEJCgGY4l FnqNL1TpisiWv+dUatIj6e//2AR//3l+hIjW/freljQCK1ePC4eSOzWVxtUZKoMKkdIiIh R48LpqgPNQJTeqmhNU4HbbMoqcp0XLk= X-MC-Unique: LftWosHtPXe3JQkMTYutpQ-1 From: Eric Blake To: qemu-devel@nongnu.org Subject: [PULL 4/5] iotests.py: QemuIoInteractive: print output on failure Date: Mon, 13 Jul 2020 09:21:05 -0500 Message-Id: <20200713142106.261809-5-eblake@redhat.com> In-Reply-To: <20200713142106.261809-1-eblake@redhat.com> References: <20200713142106.261809-1-eblake@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Mimecast-Spam-Score: 0 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; helo=lists.gnu.org; Received-SPF: pass client-ip=207.211.31.120; envelope-from=eblake@redhat.com; helo=us-smtp-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/07/13 02:19:41 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -40 X-Spam_score: -4.1 X-Spam_bar: ---- X-Spam_report: (-4.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action 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: Kevin Wolf , Vladimir Sementsov-Ogievskiy , "open list:Block layer core" , Max Reitz Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" From: Vladimir Sementsov-Ogievskiy Make it simpler to debug when qemu-io fails due to wrong arguments or environment. Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Eric Blake Message-Id: <20200701105331.121670-3-vsementsov@virtuozzo.com> Signed-off-by: Eric Blake --- tests/qemu-iotests/iotests.py | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py index 109fb3884a26..2a08fea3c9ec 100644 --- a/tests/qemu-iotests/iotests.py +++ b/tests/qemu-iotests/iotests.py @@ -217,7 +217,13 @@ class QemuIoInteractive: stdout=3Dsubprocess.PIPE, stderr=3Dsubprocess.STDOUT, universal_newlines=3DTrue) - assert self._p.stdout.read(9) =3D=3D 'qemu-io> ' + out =3D self._p.stdout.read(9) + if out !=3D 'qemu-io> ': + # Most probably qemu-io just failed to start. + # Let's collect the whole output and exit. + out +=3D self._p.stdout.read() + self._p.wait(timeout=3D1) + raise ValueError(out) def close(self): self._p.communicate('q\n') --=20 2.27.0