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qemu.py: improve message on negative exit code 

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.

Message was moved outside the 'if is_running' block to make sure it will
be logged if the VM finishes before the call to shutdown().

Signed-off-by: Amador Pahim <apahim@redhat.com>
Message-Id: <20170901112829.2571-5-apahim@redhat.com>
[ehabkost: removed superfluous parenthesis]
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
This commit is contained in:
Amador Pahim 2017-09-01 13:28:20 +02:00 committed by Eduardo Habkost
parent 63e0ba5522
commit dab91d9aa0
1 changed files with 17 additions and 7 deletions
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24
scripts/qemu.py
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@ -87,6 +87,7 @@ class QEMUMachine(object):
self._socket_scm_helper = socket_scm_helper
self._debug = debug
self._qmp = None
self._qemu_full_args = None
def __enter__(self):
return self
@ -186,13 +187,16 @@ class QEMUMachine(object):
def launch(self):
'''Launch the VM and establish a QMP connection'''
self._qemu_full_args = None
devnull = open(os.path.devnull, 'rb')
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,
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()
@ -212,14 +216,20 @@ class QEMUMachine(object):
self._qmp.close()
except:
self._popen.kill()
self._popen.wait()
exitcode = self._popen.wait()
if exitcode < 0:
LOG.warn('qemu received signal %i: %s', -exitcode,
' '.join(self._args))
self._load_io_log()
self._post_shutdown()
exitcode = self.exitcode()
if exitcode is not None and exitcode < 0:
msg = 'qemu received signal %i: %s'
if self._qemu_full_args:
command = ' '.join(self._qemu_full_args)
else:
command = ''
LOG.warn(msg, exitcode, command)
def qmp(self, cmd, conv_keys=True, **args):
'''Invoke a QMP command and return the response dict'''
qmp_args = dict()