On Fri, Mar 10, 2017 at 9:11 AM, Eneko Lacunza <[email protected]> wrote:
> Hi Martin,
>
> Take a look at
> http://ceph.com/pgcalc/

As a rough guide, use the "RBD" example to work out how many PGs your
CephFS data pool should have.

The metadata pool can almost certainly have far fewer, maybe even like
10x fewer -- would be interested to hear anyone's practical
experiences with that though.

John

>
> Cheers
> Eneko
>
> El 10/03/17 a las 09:54, Martin Wittwer escribió:
>>
>> Hi List
>>
>> I am creating a POC cluster with CephFS as a backend for our backup
>> infrastructure. The backups are rsyncs of whole servers.
>> I have 4 OSD nodes with 10 4TB disks and 2 SSDs for journaling per node.
>>
>> My question is now how to calculate the PG count for that scenario? Is
>> there a way to calculate how many PGs the data/metadata pool needs or
>> are there any recommendations?
>>
>> Best
>>
>
>
> --
> Zuzendari Teknikoa / Director Técnico
> Binovo IT Human Project, S.L.
> Telf. 943493611
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