Re: Criteria for Ceph journal sizing

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Hi!
On 2016-06-20 14:32, Daleep Singh Bais wrote:
> Dear All,
> 
> Is their some criteria for deciding on Ceph journal size to be used,
> whether in respect to Data partition size etc? I have noticed that if
> not specified, it takes the journal size to be 5GB.
> 
> Any insight in this regard will be helpful for my understanding.

See documentation:
http://docs.ceph.com/docs/master/rados/configuration/osd-config-ref/

osd journal size = {2 * (expected throughput * filestore max sync interval)}

http://comments.gmane.org/gmane.comp.file-systems.ceph.user/28433

Gruesse
Michael


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