Yeah，rbd clone works well, thanks a lot!
2013/9/16 Sage Weil <sage@xxxxxxxxxxx>
On Mon, 16 Sep 2013, Chris Dunlop wrote:Instead of cp, you can use rbd clone; this is copy-on-write and will
> On Mon, Sep 16, 2013 at 09:20:29AM +0800, ??? 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.
>
> It's a bug:
>
> http://tracker.ceph.com/issues/6257
always be faster than rbd cp.
sage
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OPS 王根意
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