Re: Default min_size value for EC pools

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Thank you Paul for your answer. On a recent setup on Luminous I had by default min_size=k+m with k=2 and m=1.

When you say unsafe : what I would like to do with k=2 and m=1 is equivalent of replicated size=2 pool. In this context, is it really equivalent or EC pool is really unsafe ?

Thank you.

On 19/05/2019 11:41, Paul Emmerich wrote:
Default is k+1 or k if m == 1

min_size = k is unsafe and should never be set.

Paul

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On Sun, May 19, 2019 at 11:31 AM Florent B <florent@xxxxxxxxxxx> wrote:
Hi,

I would like to know why default min_size value for EC pools is k+m ?

In this context, when a single OSD is down, the pool is unavailable (pgs
are "incomplete" and stuck queries start to grow).

Setting min_size=k seems the right setting, isn't it ?

Thank you.

Florent

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