ceph osd df will get you more information: variation & pg number for each OSD
Ceph does not spread object on a per-object basis, but on a pg-basis The data repartition is thus not perfect You may increase your pg_num, and/or use the mgr balancer module (http://docs.ceph.com/docs/mimic/mgr/balancer/) On 09/02/2018 01:28 PM, Marc Roos wrote: > > If I have only one rbd ssd pool, 3 replicated, and 4 ssd osd's. Why are > these objects so unevenly spread across the four osd's? Should they all > not have 162G? > > > [@c01 ]# ceph osd status 2>&1 > +----+------+-------+-------+--------+---------+--------+---------+----- > ------+ > | id | host | used | avail | wr ops | wr data | rd ops | rd data | > state | > +----+------+-------+-------+--------+---------+--------+---------+----- > ------+ > | 19 | c01 | 133G | 313G | 0 | 0 | 0 | 0 | > exists,up | > | 20 | c02 | 158G | 288G | 0 | 0 | 0 | 0 | > exists,up | > | 21 | c03 | 208G | 238G | 0 | 0 | 0 | 0 | > exists,up | > | 30 | c04 | 149G | 297G | 0 | 0 | 0 | 0 | > exists,up | > +----+------+-------+-------+--------+---------+--------+---------+----- > ------+ > > All objects in the rbd pool are 4MB not? Should be easy to spread them > evenly, what am I missing here? > > > > _______________________________________________ > 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
