[PATCH v3 03/15] docs/devel/testing: add debug section to the QEMU iotests chapter

[Emanuele Giuseppe Esposito]

Introduce the "Debugging a test case" section, in preparation
to the additional flags that will be added in the next patches.

Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
---
 docs/devel/testing.rst | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/docs/devel/testing.rst b/docs/devel/testing.rst
index 1434a50cc4..b7e2370e7e 100644
--- a/docs/devel/testing.rst
+++ b/docs/devel/testing.rst
@@ -224,6 +224,14 @@ another application on the host may have locked the file, 
possibly leading to a
 test failure.  If using such devices are explicitly desired, consider adding
 ``locking=off`` option to disable image locking.
 
+Debugging a test case
+-----------------------
+QEMU iotests offers some options to debug a failing test, that can be
+given as options to the ``check`` script:
+
+* ``-d`` (debug) just increases the logging verbosity, showing
+  for example the QMP commands and answers.
+
 Test case groups
 ----------------
 
-- 
2.30.2