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Thu, 8 Apr 2021 14:39:46 +0200 (CEST) From: Markus Armbruster To: Emanuele Giuseppe Esposito Subject: Re: [RFC PATCH v2 00/11] qemu_iotests: improve debugging options References: <20210407135021.48330-1-eesposit@redhat.com> <87wntdchbw.fsf@dusky.pond.sub.org> Date: Thu, 08 Apr 2021 14:39:46 +0200 In-Reply-To: (Emanuele Giuseppe Esposito's message of "Thu, 8 Apr 2021 13:15:12 +0200") Message-ID: <875z0xar1p.fsf@dusky.pond.sub.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.1 (gnu/linux) MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=armbru@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain Received-SPF: pass client-ip=170.10.133.124; envelope-from=armbru@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-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 , Eduardo Habkost , qemu-block@nongnu.org, qemu-devel@nongnu.org, Max Reitz , Cleber Rosa , Paolo Bonzini , John Snow Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Emanuele Giuseppe Esposito writes: > On 08/04/2021 10:26, Markus Armbruster wrote: >> Emanuele Giuseppe Esposito writes: >> >>> This series adds the option to attach gdbserver and valgrind >>> to the QEMU binary running in qemu_iotests. >>> It also allows to redirect QEMU binaries output of the python tests >>> to the stdout, instead of a log file. >>> >>> Patches 1-6 introduce the -gdb option to both python and bash tests, >>> 7-10 extend the already existing -valgrind flag to work also on >>> python tests, and patch 11 introduces -p to enable logging to stdout. >>> >>> In particular, patches 1,2,4,8 focus on extending the QMP socket timers >>> when using gdb/valgrind, otherwise the python tests will fail due to >>> delays in the QMP responses. >>> >>> This series is tested on the previous serie >>> "qemu-iotests: quality of life improvements" >>> but independent from it, so it can be applied separately. >>> >>> Signed-off-by: Emanuele Giuseppe Esposito >> >> How discoverable are these goodies for developers with only superficial >> knowledge of iotests? >> > > Not really sure what you mean, but > > ./check --help now shows: > >> -p enable prints >> -gdb start gdbserver with $GDB_QEMU options. Default is localhost:12345 > > Which I guess should be clear enough? Btw two-three weeks ago I didn't > know anything about these tests either. > > I agree I can make -p more clear, saying "enable qemu binary prints to > stdout", and move -valgrind to the "optional arguments" instead of > "bash-only" Yes, please (this is not a demand). docs/devel/testing.rst section "QEMU iotests" is the place to explain things in more detail than --help, if that's useful. Right now it simply points to check -h.