Re: Erasure coding parameters change

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On 05/11/2014 13:57, Jan Pekař wrote:> Hi,
> 
> is there any possibility to change erasure coding pool parameters ie k and m values on the fly? I want to add more disks to existing erasure pool and change redundancy level. I cannot find it in docs.

Hi,

It is not possible to change k/m on the fly.

> Changing erasure-code-profile is not working so I assume that is only template for newly created pools.
> If it is not possible now is it planned in the feature (when)?

Changing these parameters require a re-encoding of all objects. The interim solution is to create another pool and move all the objects from the first pool to the other. If disk space is an issue, a solution might be to define the old pool as a cache tier and evict its content to the storage tier. I did not test this though and there may be problems I do not yet see.

Cheers
> 
> Thank you
> With regards
> Jan Pekar, Imatic
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-- 
Loïc Dachary, Artisan Logiciel Libre

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