| Message ID | 20210414170352.29927-9-eesposit@redhat.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | qemu_iotests: improve debugging options | expand |
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. > >
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. + The final command line will be ``gdbserver $GDB_QEMU $QEMU ...`` + * ``-d`` (debug) just increases the logging verbosity, showing for example the QMP commands and answers.
Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com> --- docs/devel/testing.rst | 7 +++++++ 1 file changed, 7 insertions(+)