Re: Per pool or per image RBD copy on read

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You should be able to utilize image-meta to override the configuration
on a particular image:

# rbd image-meta set <image name> conf_rbd_clone_copy_on_read true



On Wed, Aug 16, 2017 at 8:36 PM, Xavier Trilla
<xavier.trilla@xxxxxxxxxxxxxxxx> wrote:
> Hi,
>
>
>
> Is it possible to enable copy on read for a rbd child image? I’ve been
> checking around and looks like the only way to enable copy-on-read is
> enabling it for the whole cluster using:
>
>
>
> rbd_clone_copy_on_read = true
>
>
>
> Can it be enabled just for specific images or pools?
>
>
>
> We keep some parent images in SSDs -the ones being used often- and plenty
> other images on HDD -as they aren’t used so often- and we would like to
> enable copy-on-read  just for the children images of the ones stored on
> HDDs.
>
>
>
> Thanks!
>
>
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> ceph-users@xxxxxxxxxxxxxx
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>



-- 
Jason
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