Re: [Qemu-devel] [PATCH v9 06/10] replay: fix save/load vm for non-empty queue

[Paolo Bonzini]

On 04/05/2017 13:13, Pavel Dovgalyuk wrote:
>>> This patch does not allows saving/loading vmstate when
>>> replay events queue is not empty. There is no reliable
>>> way to save events queue, because it describes internal
>>> coroutine state. Therefore saving and loading operations
>>> should be deferred to another record/replay step.
>>
>> Can it actually be non-empty after bdrv_drain_all?
>
> drain/flush cannot succeed, because started requests are
> prisoned in the replay events queue.

But that would apply to loading only.  Saving should still be always
possible.

Paolo