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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