On Mon, Aug 19, 2019 at 10:51 AM Jake Grimmett <jog@xxxxxxxxxxxxxxxxx> wrote: > > Dear All, > > We have a new Nautilus cluster, used for cephfs, with pg_autoscaler in > warn mode. > > Shortly after hitting 62% full, the autoscaler started warning that we > have too few pg: > > ********************************************************* > Pool ec82pool has 4096 placement groups, should have 16384 > ********************************************************* > > The pool is 62% full, we have 450 OSD, and are using 8 k=8 m=2 Erasure > encoding. > > Does 16384 pg seem reasonable? no, that would be a horrible value for a cluster of that size, 4096 is perfect here. Paul > > The on-line pg calculator suggests 4096... > > https://ceph.io/pgcalc/ > > (Size = 10, OSD=450, %Data=100, Target OSD 100) > > many thanks, > > Jake > > -- > MRC Laboratory of Molecular Biology > Francis Crick Avenue, > Cambridge CB2 0QH, UK. > > _______________________________________________ > 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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