Re: Translating raw capacity to real data capacity in statfs

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On Thu, Feb 8, 2018 at 10:47 AM, Chengguang Xu <cgxu519@xxxxxxxxxx> wrote:
> Hi Cepher,
>
> Current statfs(2) in ceph kernel client provides raw capacity information of total/used/avail,
> but in the point of view of filesystem I think we actually more willing to see real data capacity instead of raw.
>
> So I have a suggestion to translate raw capacity to real data capacity, it can be simply implemented by
> taking advantage of num.object_copies, the result may be not very accurate but still having reference significance.
>

It's not that simple when there are multiple data pools.

> What do you think and any suggestion?
>
> Thanks,
> Chengguang.
>
>
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