Hi David,

How many nodes in your cluster? k+m has to be smaller than your node count, 
preferably by at least two. 

How important is your data? i.e. do you have a remote mirror or backup, if not 
you may want m=3 

We use 8+2 on one cluster, and 6+2 on another.

Best,

Jake


On 7 July 2019 19:01:18 BST, David <xiaomajia...@gmail.com> wrote:
>Hi Ceph-Users,
>
> 
>
>I'm working with a  Ceph cluster (about 50TB, 28 OSDs, all Bluestore on
>lvm).
>
>Recently, I'm trying to use the Erasure Code pool.
>
>My question is "what's the best practice for using EC pools ?".
>
>More specifically, which plugin (jerasure, isa, lrc, shec or  clay)
>should I adopt, and how to choose the combinations of (k,m) (e.g.
>(k=3,m=2), (k=6,m=3) ).
>
> 
>
>Does anyone share some experience?
>
> 
>
>Thanks for any help.
>
> 
>
>Regards,
>
>David
>
> 

-- 
Sent from my Android device with K-9 Mail. Please excuse my brevity.
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