Re: qemu drive-mirror to rbd storage : no sparse rbd image

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>>Ah, you're right.  We need to add an options field, or use a new
>>blockdev-mirror command.

Ok, thanks. Can't help to implement this, but I'll glad to help for testing.


----- Mail original ----- 

De: "Paolo Bonzini" <pbonzini@xxxxxxxxxx> 
À: "Alexandre DERUMIER" <aderumier@xxxxxxxxx> 
Cc: "Ceph Devel" <ceph-devel@xxxxxxxxxxxxxxx>, "qemu-devel" <qemu-devel@xxxxxxxxxx> 
Envoyé: Lundi 13 Octobre 2014 09:06:01 
Objet: Re: qemu drive-mirror to rbd storage : no sparse rbd image 

Il 13/10/2014 08:06, Alexandre DERUMIER ha scritto: 
> 
> Also, about drive-mirror, I had tried with detect-zeroes with simple qcow2 file, 
> and It don't seem to help. 
> I'm not sure that detect-zeroes is implement in drive-mirror. 
> 
> also, the target mirrored volume don't seem to have the detect-zeroes option 
> 
> 
> # info block 
> drive-virtio1: /source.qcow2 (qcow2) 
> Detect zeroes: on 
> 
> #du -sh source.qcow2 : 2M 
> 
> drive-mirror source.qcow2 -> target.qcow2 
> 
> # info block 
> drive-virtio1: /target.qcow2 (qcow2) 
> 
> #du -sh target.qcow2 : 11G 
> 

Ah, you're right. We need to add an options field, or use a new 
blockdev-mirror command. 

Paolo 
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