On Tue, 10 Mar 2015 12:34:14 -0700 (PDT) Sage Weil wrote:
> Adjusting CRUSH maps > -------------------- > > * This point release fixes several issues with CRUSH that trigger > excessive data migration when adjusting OSD weights. These are most > obvious when a very small weight change (e.g., a change from 0 to > .01) triggers a large amount of movement, but the same set of bugs > can also lead to excessive (though less noticeable) movement in > other cases. > > However, because the bug may already have affected your cluster, > fixing it may trigger movement *back* to the more correct location. > For this reason, you must manually opt-in to the fixed behavior. > It would be nice to know at what version of Ceph those bugs were introduced. Christian -- Christian Balzer Network/Systems Engineer [email protected] Global OnLine Japan/Fusion Communications http://www.gol.com/ _______________________________________________ ceph-users mailing list [email protected] http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
