On 04/15/2015 08:10 AM, Tony Harris wrote:
Hi all, I have a cluster of 3 nodes, 18 OSDs. I used the pgcalc to give a suggested number of PGs - here was my list: Group1 3 rep 18 OSDs 30% data 512PGs Group2 3 rep 18 OSDs 30% data 512PGs Group3 3 rep 18 OSDs 30% data 512PGs Group4 2 rep 18 OSDs 5% data 256PGs Group5 2 rep 18 OSDs 5% data 256PGs My estimated growth is to 27-36 OSDs within the next 18 months, after that probably pretty stagnant for the next several years.
I would use more, but I tend to error on the high side for small clusters. The tool I mentioned in the other data distribution thread shows you the most and least subscribed OSDs in each pool. You can use that to determine if you think the distribution looks reasonable.
Script is here: https://github.com/ceph/cbt/blob/master/tools/readpgdump.py You can run it by doing ceph pg dump | readpgdump.py Mark
Thoughts? -Tony _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
_______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
