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Re: [Qemu-devel] [PATCH v8 20/23] monitor: enable IO thread for (qmp & !

From: Peter Xu
Subject: Re: [Qemu-devel] [PATCH v8 20/23] monitor: enable IO thread for (qmp & !mux) typed
Date: Fri, 23 Mar 2018 21:01:17 +0800
User-agent: Mutt/1.9.1 (2017-09-22)

On Fri, Mar 23, 2018 at 01:44:54PM +0100, Christian Borntraeger wrote:
> On 03/23/2018 01:25 PM, Peter Xu wrote:
> > On Fri, Mar 23, 2018 at 01:10:51PM +0100, Christian Borntraeger wrote:
> >> As Max Reitz said, this breaks several qemu iotests. I can reproduce that 
> >> on s390
> >> e.g. with ./check -qcow2 030 in the qemu-iotest.
> >>
> >> Why was this merged?
> > 
> > My fault.  Sorry.  I should have done iotests before submission.
> > 
> > Now I'm trying to fix those iotest issues.
> > 
> > I'm not extremely familiar with block, so the progress is a bit slow,
> > but I'll do it asap (though I'll possibly need some help from the
> > block team, since there are some not-easy ones for me).
> As this patch also seems to trigger something else for Eric, can we revert 
> this
> patch for the time being and re-apply as soon as we have solutions for the 
> issues?
> After all a hard hang in the iotest can break CI environments (as you run 
> into timeouts).

I'm fine with it if it helps.

Then I can work in background to solved existing problems, then we
turn it on again in 2.13 when ready (but still it might break things -
at least it can be during dev cycle rather than softfreeze).

Peter Xu

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