Yes . I have this problem to. Actually the newest kernels don't support this features to. It's a strange problem.
On Aug 16, 2016 6:36 AM, "Chengwei Yang" <chengwei.yang.cn@xxxxxxxxx> wrote:
On Mon, Aug 15, 2016 at 03:27:50PM +0200, Ilya Dryomov wrote:
> On Mon, Aug 15, 2016 at 9:54 AM, Chengwei Yang
> <chengwei.yang.cn@xxxxxxxxx> wrote:
> > Hi List,
> >
> > I read from ceph document[1] that there are several rbd image features
> >
> > - layering: layering support
> > - striping: striping v2 support
> > - exclusive-lock: exclusive locking support
> > - object-map: object map support (requires exclusive-lock)
> > - fast-diff: fast diff calculations (requires object-map)
> > - deep-flatten: snapshot flatten support
> > - journaling: journaled IO support (requires exclusive-lock)
> >
> > But I didn't found any document/blog/google tells these features supported since
> > which kernel version.
>
> No released kernel currently supports these features. exclusive-lock
> is staged for 4.9, we are working on staging object-map and fast-diff.
Thanks Ilya
Since object-map, fast-diff, journaling are depend on exclusive-lock, so I
expect them will be available after exclusive-lock.
And I verified that layering is supported fine by centos kernel 3.10.0-327 while
neither striping nor deep-flatten is supported, do you know which valina kernel
version start to supported rbd striping and deep-flatten?
--
Thanks,
Chengwei
>
> Thanks,
>
> Ilya
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