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Re: [Qemu-block] [Qemu-devel] [PATCH] qemu-iotests: Log QMP traffic in d


From: Kevin Wolf
Subject: Re: [Qemu-block] [Qemu-devel] [PATCH] qemu-iotests: Log QMP traffic in debug mode
Date: Wed, 31 Aug 2016 15:15:32 +0200
User-agent: Mutt/1.5.21 (2010-09-15)

Am 23.08.2016 um 20:59 hat Eric Blake geschrieben:
> On 08/23/2016 09:46 AM, Kevin Wolf wrote:
> > Python tests are already annoying enough to debug. With QMP traffic
> > available it's a little bit easier at least.
> > 
> > Signed-off-by: Kevin Wolf <address@hidden>
> > ---
> >  tests/qemu-iotests/iotests.py | 5 +++++
> >  1 file changed, 5 insertions(+)
> > 
> > diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
> > index 03bccdd..3329bc1 100644
> > --- a/tests/qemu-iotests/iotests.py
> > +++ b/tests/qemu-iotests/iotests.py
> > @@ -50,6 +50,7 @@ cachemode = os.environ.get('CACHEMODE')
> >  qemu_default_machine = os.environ.get('QEMU_DEFAULT_MACHINE')
> >  
> >  socket_scm_helper = os.environ.get('SOCKET_SCM_HELPER', 
> > 'socket_scm_helper')
> > +debug = False
> >  
> >  def qemu_img(*args):
> >      '''Run qemu-img and return the exit code'''
> > @@ -134,6 +135,8 @@ class VM(qtest.QEMUQtestMachine):
> >      def __init__(self):
> >          super(VM, self).__init__(qemu_prog, qemu_opts, test_dir=test_dir,
> >                                   socket_scm_helper=socket_scm_helper)
> > +        if debug:
> > +            self._debug = True
> >          self._num_drives = 0
> >  
> 
> So we already had plumbing for debug...
> 
> >      def add_device(self, opts):
> > @@ -323,6 +326,8 @@ def verify_quorum():
> >  def main(supported_fmts=[], supported_oses=['linux']):
> >      '''Run tests'''
> >  
> > +    global debug
> 
> ...but just needed to turn it on?

Yes, the parent class already implements the logging. I guess this was
done in the context of some other scripts (maybe QMP shell?), so we just
have to reuse what's already there.

Kevin

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