Uri Lublin wrote:
> Actually, although not intended (and was not tested), KVM's migration 
> capability enables save/restore of non-qcow images.
> I used it to debug the migration code.
> Please look at the bottom of http://kvm.qumranet.com/kvmwiki/Migration 
> ("savevm/loadvm to an external state file").
> BTW, my little trick also works for "live" savevm/loadvm (kids don't try 
> this at home).
>   

One of these days, I plan on implementing a checkpoint:// protocol that 
always "fails" and does a live savevm to disk without shutting down the VM.

Regards,

Anthony Liguori

> Hope that helps,
> Uri.
>
> Daniel P. Berrange wrote:
>   
>> On Fri, Jun 29, 2007 at 04:05:22PM +0800, youhongyu wrote:
>>   
>>     
>>> hi all,
>>>
>>> i use: fc7, built in xen, kvm.
>>> i boot my machine into normal kernal and install a guest os by vir-manager, 
>>> and i encounter a strange situation .... the "save" command from virtual-
>>> manager menu failed! it pop out a small windows seem want to tell me 
>>> something, but it quickly disappeared. what's thing happens?
>>>     
>>>       
>> The window shouldn't have disappeared like that - it should have told
>> you that this isn't supported....
>>
>> We can't support save/restore of  KVM guests in virt-manager at this
>> time. QEMU 0.9.0 was really very unhelpful and removed the ability specify
>> a filename for saving VM state, assuming that everyone happens to be using
>> a qcow file :-( Not much use if you are using raw files, or physical volumes,
>> or LVM which are the primary storage types used in virt-manager currently.
>>
>> Dan.
>>   
>>     
>
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