Re: CephFS small files overhead

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You need to re-deploy OSDs for bluestore_min_alloc_size to take effect.

> On 4.09.2018, at 18:31, andrew w goussakovski <gusakovskiy.a@xxxxxxxxx> wrote:
> 
> Hello
> 
> We are trying to use cephfs as storage for web graphics, such as
> thumbnails and so on.
> Is there any way to reduse overhead on storage? On test cluster we have
> 1 fs, 2 pools (meta and data) with replica size = 2
> 
>     objects: 1.02 M objects, 1.1 GiB
>     usage:   144 GiB used, 27 GiB / 172 GiB avail
> 
> So we have (144/2)/1.1*100%=6500% overhead.
> 
> ceph version 13.2.1 (5533ecdc0fda920179d7ad84e0aa65a127b20d77) mimic
> (stable)
> osd storage - bluestore (changing bluestore_min_alloc_size makes no
> visible effect)
> 
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