Re: [Xen-devel] [XTF PATCH 3/3] xtf-runner: support two modes for getting output

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Thu, Aug 11, 2016 at 09:33:57AM +0100, Wei Liu wrote:
> On Wed, Aug 10, 2016 at 04:07:30PM +0100, Wei Liu wrote:
> [...]
> >  
> > +def run_test_logfile(opts, test):
> > +    """ Run a specific test via grepping log file"""
> > +
> > +    fn = opts.logfile_dir + (opts.logfile_pattern % test)
> > +    local_time = time.strftime('%Y-%m-%d %H:%M:%S', time.localtime())
> > +
> > +    # Use time to generate unique stamps
> > +    start_stamp = "===== XTF TEST START %s =====" % local_time
> > +    end_stamp = "===== XTF TEST END %s =====" % local_time
> > +
> > +    print "Using %s" % fn
> > +
> > +    f = open(fn, "ab")
> > +    f.write(start_stamp + "\n")
> > +    f.close()
> > +
> 
> I think it would make more sense for the micro VM itself to write
> stamps?

I want to pass a stamp generated by the runner to micro VMs, otherwise
runner wouldn't be able to tell which stamps are the right one.

For PV guests it works because there is start_info->cmd_line.
Unfortunately I can't seem to find a place for putting in a command line
for hvm guest in the ABI. Newer version of Xen will have a boot ABI that
supports command line. This mode is mainly for old versions of Xen so I
don't see how it is possibly at this stage to uniformly support both old
and new versions of Xen.

Maybe we need to live with running adding the stamp? Let me know if I
miss anything.

Wei.

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