Re: Erasure code pool overhead

[Italo Santos <okdokk@xxxxxxxxx>]

Thanks Nick.

At.

Italo Santos

http://italosantos.com.br/

On Wednesday, January 7, 2015 at 18:44, Nick Fisk wrote:

Hi Italo,

 

=k/(k+m)

 

Where k is data chunks and m is coding chunks.

 

For example k=8 m=2 would give you

 

=8/(8+2)

 

.8 or 80% usable storage and 20% used for coding. Please keep in mind however that you can’t fill up the storage completely.

 

Nick

 

From: ceph-users [mailto:ceph-users-bounces@xxxxxxxxxxxxxx] On Behalf Of Italo Santos
Sent: 06 January 2015 22:14
To: ceph-users@xxxxxxxxxxxxxx
Subject: [ceph-users] Erasure code pool overhead

 

Hello,

 

I’d like to know how can I calculate the overhead of a erasure pool?

 

Regards.

 

Italo Santos

http://italosantos.com.br/

 

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