Re: [Qemu-devel] [ANNOUNCE] QEMU 2.11.0-rc2 is now available

[Stefan Hajnoczi]

On Wed, Nov 22, 2017 at 8:09 AM, Christian Borntraeger
<address@hidden> wrote:
> On 11/22/2017 04:23 AM, Michael Roth wrote:
>> Quoting Christian Borntraeger (2017-11-21 15:38:32)
>>> forgot to cc qemu-devel....
>>>
>>> On 11/21/2017 10:37 PM, Christian Borntraeger wrote:
>>>> a quick heads up . Rc2 now triggers
>>>> +qemu-img: block/block-backend.c:2088: blk_root_drained_end: Assertion 
>>>> `blk->quiesce_counter' failed.
>>>> for several qemu iotests.
>>>>
>>>> I have not looked into any details.
>>
>> It looks to be due to:
>>
>> 4afeffc8572f40d8844b946a30c00b10da4442b1
>> blockjob: do not allow coroutine double entry or entry-after-completion
>
> Yes, I can confirm that reverting this patch gets rid of this assertion, but
> I see things like
>
> --- /home/cborntra/REPOS/qemu/tests/qemu-iotests/020.out        2017-11-21 
> 20:19:34.785519323 +0100
> +++ /home/cborntra/REPOS/qemu/build/tests/qemu-iotests/020.out.bad      
> 2017-11-22 09:04:50.127612500 +0100
> @@ -537,7 +537,8 @@
>  wrote 65536/65536 bytes at offset 4295098368
>  64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
>  No errors were found on the image.
> -Image committed.
> +qemu_aio_coroutine_enter: Co-routine was already scheduled in 
> 'co_aio_sleep_ns'
> +./common.rc: line 61: 88002 Aborted                 (core dumped) ( exec 
> "$QEMU_IMG_PROG" $QEMU_IMG_OPTIONS "$@" )

Thanks for reporting this, Christian!

I ran qemu-iotests with -raw and -qcow2 to verify that commit
64807cd77938885f681a9a18b5736e923ad50b7c ("Merge remote-tracking
branch 'remotes/cody/tags/block-pull-request' into staging") cause
regressions.  The results were failures in at least 055 109 (-raw) and
020 039 (-qcow2).

I think we should revert commit 64807cd77938885f681a9a18b5736e923ad50b7c.

Stefan