Re: rbd image features supported by which kernel version?

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> Op 15 augustus 2016 om 9:54 schreef Chengwei Yang <chengwei.yang.cn@xxxxxxxxx>:
> 
> 
> 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.
> 

A support matrix would be nice indeed :)

> I'm using centos 7 and kernel version is 3.10 and found that only layering is
> supported, so I'd like to learn which version support all the features and like
> to give it a try, thanks in advance.
> 

Keep in mind that RedHat kernels are not always accurate with their version numbers. They backport fixes and features from upstream. So a 3.10 kernel from RedHat might have features or such from newer kernels.

Wido

> [1] http://docs.ceph.com/docs/master/man/8/rbd/
> 
> -- 
> Thanks,
> Chengwei
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