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Re: [PULL 00/18] migration queue

From: Dr. David Alan Gilbert
Subject: Re: [PULL 00/18] migration queue
Date: Mon, 14 Mar 2022 17:54:53 +0000
User-agent: Mutt/2.1.5 (2021-12-30)

* Peter Maydell (peter.maydell@linaro.org) wrote:
> On Mon, 14 Mar 2022 at 17:07, Daniel P. Berrangé <berrange@redhat.com> wrote:
> > So the test harness is waiting for a reply to 'query-migrate'.
> >
> > This should be fast unless QEMU has hung in the main event
> > loop servicing monitor commands, or stopped.
> I was kind of loose with the terminology -- I don't remember whether
> it was actually hung in the sense of stopped entirely, or just
> "sat in a loop waiting for a migration state that never arrives".
> I'll try to look more closely if I can catch it in the act again.

Yeh, there's a big difference; still, if it's always in this test at
that point, then I think it's one for Juan; it looks like multifd cancel

> One thing that makes this bug investigation trickier, incidentally,
> is that the migration-test code seems to depend on userfaultfd.
> That means you can't run it under 'rr'.

That should only be the postcopy tests; the others shouldn't use that.


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

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