答复: Does anyone know why cephfs do not support EC pool?

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Hello:

 

    Thank you very much for your detail answer. I have used iozone to test randwrite, it reported not support in , but  osd not crash.

 

 

发件人: huang jun [mailto:hjwsm1989@xxxxxxxxx]
发送时间: 20161018 13:44
收件人: Erick Perez - Quadrian Enterprises
抄送: liuxuan 11625 (RD); ceph-users@xxxxxxxxxxxxxx
主题: Re: [ceph-users] Does anyone know why cephfs do not support EC pool?

 

you can look into this:

the community have do a lot works related to ec for rbd and fs interface.

 

2016-10-18 13:06 GMT+08:00 Erick Perez - Quadrian Enterprises <eperez@xxxxxxxxxxxxxxx>:

On Mon, Oct 17, 2016 at 9:23 PM, huang jun <hjwsm1989@xxxxxxxxx> wrote:

ec only support writefull and append operations, but not partial write,
your can try it by doing random writes, see if the osd crash or not.


2016-10-18 10:10 GMT+08:00 Liuxuan <liu.xuan@xxxxxxx>:
> Hello:
>
>
>
>   I have create cephfs which data pool type is EC and metadata is replica,
> The cluster reported errors from MDSMonitor::_check_pool function.
>
>  But when I ignore to check the pool type, the cephfs can write and read
> datas. Does anyone know why cephfs do not support EC pool?
>
>
>
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--
Thank you!
HuangJun
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Is EC in the roadmap for CEPH? Cant seem to find it. My question is because "all others" (Nutanix, Hypergrid) do EC storage for VMs as the default way of storage. It seems EC in ceph (as of Sept 2016) is considered by many "experimental" unless is used for cold data.

--


---------------------
Erick Perez 
Soluciones Tacticas Pasivas/Activas de Inteligencia y Analitica de Datos para Gobiernos
Quadrian Enterprises S.A. - Panama, Republica de Panama

Skype chat: eaperezh
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--

Thank you!
HuangJun

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