Re: [Qemu-devel] [PATCH 7/8] pseries: savevm support for PAPR virtual SCSI

[Paolo Bonzini]

Il 31/05/2013 12:33, Alexey Kardashevskiy ha scritto:
>>>>> How do you trigger the situation when there are inactive requests which
>>>>> have to be migrated?
>>>>
>>>> You need to trigger an error.  For example, you could use a sparse image
>>>> on an almost-full partition and let "dd" fill your disk.  Then migrate
>>>> to another instance of QEMU on the same machine, the destination machine
>>>> should succeed migration but fail starting the machine.
>>>
>>> Why would it fail? I run "dd", it fills the disk and stops.
>>
>> You have to make it fill the _host_ disk before it fills the guest disk.
>>  That's why I mentioned a sparse image.
>>
>> Then the machine pauses with the failing request in its queue.
> 
> Does the machine pause automatically in such case? Did not know that, now
> it makes sense. Thanks.

That's the point of rerror=stop/werror=stop. :)

Paolo