Ah ok, Great ! I was just a bit worried about upgrade. Thanks for your response sage ! ----- Mail original ----- De: "Sage Weil" <sage@xxxxxxxxxxxx> À: "aderumier" <aderumier@xxxxxxxxx> Cc: "ceph-users" <ceph-users@xxxxxxxxxxxxxx> Envoyé: Lundi 9 Février 2015 07:11:46 Objet: Re: crush tunables : optimal : upgrade from firefly to hammer behaviour ? On Mon, 9 Feb 2015, Alexandre DERUMIER wrote: > Hi, > > I'm currently use crush tunables "optimal" value. > > If I upgrade from firefly to hammer, does the optimal value will upgrade > to optimal values for hammer. The tunables won't change on upgrade, and optimal on firefly != optimal on hammer. In fact, 'optimal' on firefly is the same as 'firefly' (on firefly or hammer). > So, does my clients (qemu-librbd) need to be also upgraded to hammer to > support new hammer features ? > > > If yes, Yes, but you won't need those features until you do upgrade mons and set tunables to 'hammer' or (hammer) 'optimal'. s > > I think to: > > > - change crush tunables to firefly > - upgrade firefly cluster to hammer cluster > - upgrade all my clients to hammer. (with qemu live migration, to have new qemu process with last hammer librbd) > - change crush tunables to hammer > > > Is it the right way ? > _______________________________________________ > 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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