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 04/15] qemu-iotests: add option to attach gdbserver
Date: Mon, 3 May 2021 16:38:35 +0200 [thread overview]
Message-ID: <d9de9b97-d923-5cfa-9396-47a795ed1310@redhat.com> (raw)
In-Reply-To: <4189f418-ef3f-bb94-585a-5efc95ef1257@redhat.com>
On 30.04.21 23:03, Emanuele Giuseppe Esposito wrote:
>
>
> On 30/04/2021 13:38, Max Reitz wrote:
>> On 14.04.21 19:03, Emanuele Giuseppe Esposito wrote:
>>> Add -gdb flag and GDB_QEMU environmental variable
>>> to python tests to attach a gdbserver to each qemu instance.
>>
>> Well, this patch doesn’t do this, but OK.
>
> Maybe "define" rather than "add"? In the sense of defining the "-gdb"
> option, which is what it actually does.
That’s possible, but I think better would be to contrast it with what
this patch doesn’t do, but what one could think when reading this
description.
I.e. to say “Add/define -gdb flag [...] to each qemu instance. This
patch only adds and parses this flag, it does not yet add the
implementation for it.”
>> Out of interest: Why gdbserver and not “just” gdb? On Fedora, those
>> are separate packages, so I don’t have gdbserver installed, that’s why
>> I’m asking.
>
> As far as I have tried, using only gdb with ./check is very hard to use,
> because the stdout is filtered out by the script.
> So invoking gdb attaches it to QEMU, but it is not possible to start
> execution (run command) or interact with it, because of the python
> script filtering. This leaves the test hanging.
>
> gdbserver is just something that a gdb client can attach to (for
> example, in another console or even in another host) for example with
> the command
> # gdb -iex "target remote localhost:12345" . This provides a nice and
> separate gdb monitor to the client.
All right. I thought gdb could be used as a server, too, but... Looks
like it can’t. (Like, I thought, you could do something like
“gdb -ex 'listen localhost:12345' $cmd”. But seems like there is no
server built into gdb proper.)
Max
next prev parent reply other threads:[~2021-05-03 14:40 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 [this message]
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
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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