Changing the number of PGs is one of the most expensive operations you can run, and should be avoided as much as possible. Having said that you should try to avoid having way too many PGs with very few OSDs, but it's certainly preferable to splitting PGs... On Wed, Aug 3, 2016 at 1:15 PM, Maged Mokhtar <mmokhtar@xxxxxxxxxxxxxxxxxx> wrote: > Hello, > > I would like to build a small cluster with 20 disks to start but in the > future would like to gradually increase it to maybe 200 disks. > Is it better to fix the number of PGs in the pool from the beginning or is > it better to start with a small number and then gradually change the number > of PGs as the system grows ? > Is the act of changing the number of PGs in a running cluster something that > can be done regularly ? > > Cheers > /Maged > > > > > > _______________________________________________ > 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
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