You are talking about the min_size, which should be 2 according to your text.

Please be aware, the min_size in your CRUSH is _not_ the replica size. The 
replica size is set with your pools.

> Op 7 okt. 2017 om 19:39 heeft Peter Linder <peter.lin...@fiberdirekt.se> het 
> volgende geschreven:
> 
>> On 10/7/2017 7:36 PM, Дробышевский, Владимир wrote:
>> Hello!
>> 
>> 2017-10-07 19:12 GMT+05:00 Peter             Linder 
>> <peter.lin...@fiberdirekt.se>:
>> 
>>> The idea is to select an nvme osd, and
>>> then select the rest from hdd osds in different datacenters (see crush
>>> map below for hierarchy). 
>>> 
>> It's a little bit aside of the question, but why do you want to mix SSDs and 
>> HDDs in the same pool? Do you have read-intensive workload and going to use 
>> primary-affinity to get all reads from nvme?
>>  
>> 
> Yes, this is pretty much the idea, getting the performance from NVMe     
> reads, while still maintaining triple redundancy and a reasonable cost. 
> 
> 
>> -- 
>> Regards,
>> Vladimir
> 
> _______________________________________________
> ceph-users mailing list
> ceph-users@lists.ceph.com
> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
_______________________________________________
ceph-users mailing list
ceph-users@lists.ceph.com
http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com

Reply via email to