On 06/09/2014 02:00 PM, Ignazio Cassano wrote:
Many thanks...
Can I create a format 2 image (with support for linear snapshot) using
qemu-img command ?
Yes:
qemu-img create -f raw rbd:rbd/image1:rbd_default_format=2 10G
'rbd_default_format' is a Ceph setting which is passed down to librbd
directly.
Wido
2014-06-09 13:05 GMT+02:00 Ilya Dryomov <ilya.dryo...@inktank.com
<mailto:ilya.dryo...@inktank.com>>:
On Mon, Jun 9, 2014 at 3:01 PM, Ignazio Cassano
<ignaziocass...@gmail.com <mailto:ignaziocass...@gmail.com>> wrote:
> Hi all,
> I installed cep firefly and now I am playing with rbd snapshot.
> I created a pool (libvirt-pool) with two images:
>
> libvirtimage1 (format 1)
> image2 (format 2).
>
> When I try to protect the first image:
>
> rbd --pool libvirt-pool snap protect --image libvirtimage1 --snap
> libvirt-snap
>
> it gives me an error because the image is in format 1:
>
> image must support layering.
>
> This is correct because libvirtimage1 is in format 1.
>
> But If I try with the second image:
> rbd --pool libvirt-pool snap protect --image image2 --snap
image2-snap
>
> it gives the following:
>
> snap failed (2) No such file or directory
>
>
> Image2 exists infact I can see it :
>
> rbd -p libvirt-pool ls
>
> libvirtimage1
> image2
>
>
> Could someone help me, please ?
You have to create the snapshot first:
rbd --pool libvirt-pool snap create --image image2 --snap image2-snap
rbd --pool libvirt-pool snap protect --image image2 --snap image2-snap
Thanks,
Ilya
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--
Wido den Hollander
42on B.V.
Ceph trainer and consultant
Phone: +31 (0)20 700 9902
Skype: contact42on
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