[Qemu-devel] [PATCH v6 4/7] qemu.py: improve message on negative exit code

[Amador Pahim <apahim@redhat.com>]

The current message shows 'self._args', which contains only part of the
options used in the qemu command line.

This patch makes the qemu full args list an instance variable and then
uses it in the negative exit code message.

Signed-off-by: Amador Pahim <apahim@redhat.com>
---
 scripts/qemu.py | 17 ++++++++++++-----
 1 file changed, 12 insertions(+), 5 deletions(-)

diff --git a/scripts/qemu.py b/scripts/qemu.py
index e3ea534ec4..9434ccc30b 100644
--- a/scripts/qemu.py
+++ b/scripts/qemu.py
@@ -48,6 +48,7 @@ class QEMUMachine(object):
         self._iolog = None
         self._socket_scm_helper = socket_scm_helper
         self._debug = debug
+        self._qemu_full_args = None
 
     # This can be used to add an unused monitor instance.
     def add_monitor_telnet(self, ip, port):
@@ -140,9 +141,14 @@ class QEMUMachine(object):
         qemulog = open(self._qemu_log_path, 'wb')
         try:
             self._pre_launch()
-            args = self._wrapper + [self._binary] + self._base_args() + self._args
-            self._popen = subprocess.Popen(args, stdin=devnull, stdout=qemulog,
-                                           stderr=subprocess.STDOUT, shell=False)
+            self._qemu_full_args = None
+            self._qemu_full_args = (self._wrapper + [self._binary] +
+                                    self._base_args() + self._args)
+            self._popen = subprocess.Popen(self._qemu_full_args,
+                                           stdin=devnull,
+                                           stdout=qemulog,
+                                           stderr=subprocess.STDOUT,
+                                           shell=False)
             self._post_launch()
         except:
             if self.is_running():
@@ -163,8 +169,9 @@ class QEMUMachine(object):
 
             exitcode = self._popen.wait()
             if exitcode < 0:
-                LOG.error('qemu received signal %i: %s', -exitcode,
-                          ' '.join(self._args))
+                LOG.error('qemu received signal %i:%s', -exitcode,
+                          ' Command: %r.' % ' '.join(self._qemu_full_args)
+                          if self._qemu_full_args else '')
             self._load_io_log()
             self._post_shutdown()
 
-- 
2.13.3