From: Max Reitz <mreitz@redhat.com>
To: Emanuele Giuseppe Esposito <eesposit@redhat.com>, qemu-block@nongnu.org
Cc: Kevin Wolf <kwolf@redhat.com>,
Eduardo Habkost <ehabkost@redhat.com>,
qemu-devel@nongnu.org, Cleber Rosa <crosa@redhat.com>,
Paolo Bonzini <pbonzini@redhat.com>, John Snow <jsnow@redhat.com>
Subject: Re: [PATCH v3 08/15] docs/devel/testing: add -gdb option to the debugging section of QEMU iotests
Date: Fri, 30 Apr 2021 14:27:26 +0200 [thread overview]
Message-ID: <eabf6735-842e-b898-c460-07267cee1627@redhat.com> (raw)
In-Reply-To: <20210414170352.29927-9-eesposit@redhat.com>
On 14.04.21 19:03, Emanuele Giuseppe Esposito wrote:
> Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
> ---
> docs/devel/testing.rst | 7 +++++++
> 1 file changed, 7 insertions(+)
>
> diff --git a/docs/devel/testing.rst b/docs/devel/testing.rst
> index b7e2370e7e..2ee77a057b 100644
> --- a/docs/devel/testing.rst
> +++ b/docs/devel/testing.rst
> @@ -229,6 +229,13 @@ Debugging a test case
> QEMU iotests offers some options to debug a failing test, that can be
> given as options to the ``check`` script:
>
> +* ``-gdb`` wraps ``gdbsever`` to the QEMU binary,
> + so it is possible to connect to it via gdb.
> + One way to do so is via ``gdb -iex "target remote $GDB_QEMU"``
> + The default address is ``localhost:12345``, and can be changed
> + by setting the ``$GDB_QEMU`` environmental variable.
*environment variable
> + The final command line will be ``gdbserver $GDB_QEMU $QEMU ...``
> +
I think the order in this explanation is ordered not quite right,
because it uses $GDB_QEMU before explaining what it is. (Also, I
suppose $GDB_QEMU might contain other options than the socket address,
so "target remote $GDB_QEMU" does not necessarily work.) I’d
reorder/change it to:
``-gdb`` wraps every QEMU invocation in a ``gdbserver``, which waits for
a connection from a gdb client. The options given to ``gdbserver``
(e.g. the address on which to listen for connections) are taken from the
``$GDB_QEMU`` environment variable. By default (if ``$GDB_QEMU`` is
empty), it listens on ``localhost:12345``.
You can connect to it for example with ``gdb -iex "target remote
$addr"``, where ``$addr`` is the address ``gdbserver`` listens on.
Max
> * ``-d`` (debug) just increases the logging verbosity, showing
> for example the QMP commands and answers.
>
>
next prev parent reply other threads:[~2021-04-30 13:46 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-14 17:03 [PATCH v3 00/15] qemu_iotests: improve debugging options Emanuele Giuseppe Esposito
2021-04-14 17:03 ` [PATCH v3 01/15] python: qemu: add timer parameter for qmp.accept socket Emanuele Giuseppe Esposito
2021-04-30 11:23 ` Max Reitz
2021-05-13 17:54 ` John Snow
2021-05-14 8:16 ` Emanuele Giuseppe Esposito
2021-04-14 17:03 ` [PATCH v3 02/15] python: qemu: pass the wrapper field from QEMUQtestmachine to QEMUMachine Emanuele Giuseppe Esposito
2021-04-30 11:23 ` Max Reitz
2021-05-13 17:55 ` John Snow
2021-04-14 17:03 ` [PATCH v3 03/15] docs/devel/testing: add debug section to the QEMU iotests chapter Emanuele Giuseppe Esposito
2021-04-30 11:23 ` Max Reitz
2021-04-30 14:07 ` Paolo Bonzini
2021-04-14 17:03 ` [PATCH v3 04/15] qemu-iotests: add option to attach gdbserver Emanuele Giuseppe Esposito
2021-04-30 11:38 ` Max Reitz
2021-04-30 21:03 ` Emanuele Giuseppe Esposito
2021-05-03 14:38 ` Max Reitz
2021-04-30 12:03 ` Max Reitz
2021-04-14 17:03 ` [PATCH v3 05/15] qemu-iotests: delay QMP socket timers Emanuele Giuseppe Esposito
2021-04-30 11:59 ` Max Reitz
2021-04-30 21:03 ` Emanuele Giuseppe Esposito
2021-05-03 15:02 ` Max Reitz
2021-05-13 18:20 ` John Snow
2021-04-14 17:03 ` [PATCH v3 06/15] qemu_iotests: insert gdbserver command line as wrapper for qemu binary Emanuele Giuseppe Esposito
2021-04-30 12:05 ` Max Reitz
2021-04-14 17:03 ` [PATCH v3 07/15] qemu-iotests: add gdbserver option to script tests too Emanuele Giuseppe Esposito
2021-04-30 12:17 ` Max Reitz
2021-04-14 17:03 ` [PATCH v3 08/15] docs/devel/testing: add -gdb option to the debugging section of QEMU iotests Emanuele Giuseppe Esposito
2021-04-30 12:27 ` Max Reitz [this message]
2021-04-14 17:03 ` [PATCH v3 09/15] qemu_iotests: extend the check script to support valgrind for python tests Emanuele Giuseppe Esposito
2021-04-30 12:45 ` Max Reitz
2021-04-14 17:03 ` [PATCH v3 10/15] qemu_iotests: extent QMP socket timeout when using valgrind Emanuele Giuseppe Esposito
2021-04-30 13:02 ` Max Reitz
2021-04-30 21:03 ` Emanuele Giuseppe Esposito
2021-05-13 18:47 ` John Snow
2021-05-14 8:16 ` Emanuele Giuseppe Esposito
2021-05-14 20:02 ` John Snow
2021-05-18 13:58 ` Emanuele Giuseppe Esposito
2021-05-18 14:26 ` John Snow
2021-05-18 18:20 ` Emanuele Giuseppe Esposito
2021-04-14 17:03 ` [PATCH v3 11/15] qemu_iotests: allow valgrind to read/delete the generated log file Emanuele Giuseppe Esposito
2021-04-30 13:17 ` Max Reitz
2021-04-14 17:03 ` [PATCH v3 12/15] qemu_iotests: insert valgrind command line as wrapper for qemu binary Emanuele Giuseppe Esposito
2021-04-30 13:20 ` Max Reitz
2021-04-14 17:03 ` [PATCH v3 13/15] docs/devel/testing: add -valgrind option to the debug section of QEMU iotests Emanuele Giuseppe Esposito
2021-04-30 13:24 ` Max Reitz
2021-04-14 17:03 ` [PATCH v3 14/15] qemu_iotests: add option to show qemu binary logs on stdout Emanuele Giuseppe Esposito
2021-04-30 13:50 ` Max Reitz
2021-04-30 21:04 ` Emanuele Giuseppe Esposito
2021-05-03 15:03 ` Max Reitz
2021-04-14 17:03 ` [PATCH v3 15/15] docs/devel/testing: add -p option to the debug section of QEMU iotests Emanuele Giuseppe Esposito
2021-04-30 13:55 ` Max Reitz
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