Hi Sage, On Tue, Mar 10, 2015 at 8:34 PM, Sage Weil <sweil@xxxxxxxxxx> 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. > > In order to set the new tunable to correct the behavior:: > > ceph osd crush set-tunable straw_calc_version 1 > Since it's not obvious in this case, does setting straw_calc_version = 1 still allow older firefly clients to connect? Cheers, Dan _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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