Re: migration qtest failure: "query-migrate shows failed migration: Unable to write to socket: Broken pipe"

[Dr. David Alan Gilbert]

* Peter Maydell (peter.maydell@linaro.org) wrote:
> On Thu, 15 Dec 2022 at 12:52, Dr. David Alan Gilbert
> <dgilbert@redhat.com> wrote:
> >
> > * Peter Maydell (peter.maydell@linaro.org) wrote:
> > > It doesn't seem to repro running manually, my guess is that
> > > it happens because the machine is heavily loaded doing the
> > > whole build-and-test cycle.
> >
> > Yeh; I think we'll still need a backtrace or better qmp log though to
> > figure it out.
> 
> Unfortunately, often all you get is "what does 'make check' output".
> Is there a way we can improve the test so it outputs something
> more useful when it detects a failure ?

I can't think how to improve the test itself like that; could you bind
assertion failures to call/print a backtrace:

https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man3/backtrace.3.html

?

Dave

> thanks
> -- PMM
> 
-- 
Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK