Re: Rbd cp empty block

[王根意 <gywang@xxxxxxxxxx>]

But how can I use the cloned block as vm disk?

2013/9/16 Guangliang Zhao <guangliang@xxxxxxxxxxxxxxx>

On Mon, Sep 16, 2013 at 09:20:29AM +0800, 王根意 wrote:
> Hi all:
>
> I have a 30G rbd block device as virtual machine disk, Aleady installed
> ubuntu 12.04. About 1G space used.
>
> When I want to deploy vm, I made a "rbd cp". Then problem came, it copy 30G
> data instead of 1G. And this action take lots of time.
>
> Any ideal? I just want make it faster to deploy vm.

The "rbd clone" maybe what you want ;-)
http://ceph.com/docs/master/man/8/rbd/

>
> --
> OPS 王根意

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--
Best regards,
Guangliang

--
OPS 王根意

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