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Re: [Qemu-devel] [Qemu-block] segfault in parallel blockjobs (iotest 30)

From: Alberto Garcia
Subject: Re: [Qemu-devel] [Qemu-block] segfault in parallel blockjobs (iotest 30)
Date: Wed, 08 Nov 2017 14:58:23 +0100
User-agent: Notmuch/0.18.2 (http://notmuchmail.org) Emacs/24.4.1 (i586-pc-linux-gnu)

On Tue 07 Nov 2017 05:19:41 PM CET, Anton Nefedov wrote:

> One more drainage-related thing.
> We have recently encountered an issue with parallel block jobs and it's
> not quite clear how to fix it properly, so would appreciate your ideas.
> The small attached tweak makes iotest 30 (-qcow2 -nocache) fail 10/10
> times on my machine.

I just wanted to quickly confirm that I can reproduce this in my system
too, I just checked QEMU v2.8 (when this was introduced) and it was
affected as well. Somehow we didn't detect this back in the day :(

I'll take a look.


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