Re: [Qemu-devel] Consistency of iotests 093 and 136

[Eric Blake]

On 1/24/19 8:34 AM, Alberto Garcia wrote:
> On Thu 24 Jan 2019 11:11:06 AM CET, Alberto Garcia wrote:
>> On Wed 23 Jan 2019 06:00:49 PM CET, Max Reitz wrote:
>>> Hi,
>>>
>>> 093 and 136 seem really flaky to me.  I can reproduce that by running:
>>
>> That's interesting, I can make 093 fail quite easily now (I haven't
>> tested the other one yet), but I don't think this happened
>> earlier. I'll try to figure out what's going on.
> 
> I bisected this and it seems that 093 started to fail after this:
> 
> 8258292e monitor: Remove "x-oob", offer capability "oob" unconditionally
> 
> I'm not familiar with that option so I need to investigate.

We've got several tests failing after making x-oob unconditional; here's
another thread:

https://lists.gnu.org/archive/html/qemu-devel/2019-01/msg05587.html

Could it be that the test was using some sort of QMP command as an
attempt to synchronize state, but the OOB handling is now making it not
a reliable sync point?

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3226
Virtualization:  qemu.org | libvirt.org

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