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

From: Paolo Bonzini
Subject: Re: [Qemu-ppc] [PATCH 7/8] pseries: savevm support for PAPR virtual SCSI
Date: Fri, 31 May 2013 12:34:32 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130514 Thunderbird/17.0.6

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. :)


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