Perhaps Ceph itself should also have a warning pop up (in "ceph -s", "ceph
health detail" etc) when replica and min_size=1 or in an EC if min_size <
k+1. Of course it could be muted but it would give an operator pause
initially when setting that. I think a lot of people assume replica size=2
is safe enough. I imagine this must have been proposed before.

Respectfully,

*Wes Dillingham*
LinkedIn <http://www.linkedin.com/in/wesleydillingham>
w...@wesdillingham.com




On Mon, Jun 17, 2024 at 1:07 PM Anthony D'Atri <anthony.da...@gmail.com>
wrote:

>
> >>
> >> * We use replicated pools
> >> * Replica 2, min replicas 1.
>
> Note to self:   Change the docs and default to discourage this.  This is
> rarely appropriate in production.
>
> You had multiple overlapping drive failures?
>
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