On Mon, May 23, 2016 at 2:59 PM, Albert Archer <albertarcher94@xxxxxxxxx> wrote:
>
> Thanks.
> but how to use these features ???
> so,there is no way to implement them on ubuntu 16.04 kernel (4.4.0) ???
> it's strange !!!
What is your use case? If you are using the kernel client, create your
images with
$ rbd create --size <size> --image-feature layering <image-name>
or add
rbd default features = 3
to ceph.conf on the client side. (Setting rbd default features on the
OSDs will have no effect.)
These features are nice to have but don't really affect the main I/O
path in the majority of cases. The image is perfectly usable with them
disabled.
Thanks,
Ilya
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