You could also create two roots and two rules and have the primary osd be the 10k drives so that the 7.2k are used primarily for writes. I believe that recipe is on the CRUSH page in the documentation.
Robert LeBlanc Sent from a mobile device please excuse any typos. On Jul 9, 2015 10:03 PM, "Alexandre DERUMIER" <aderum...@odiso.com> wrote: > Hi, > > you need to create 2 crushmaps, 1 for 10k && 1 for 7.2k disks. > > then create 2 pools, 1pool with crushmap1 and 1 pool with crushmap2. > > see : > > http://www.sebastien-han.fr/blog/2014/08/25/ceph-mix-sata-and-ssd-within-the-same-box/ > > ----- Mail original ----- > De: "Christoph Adomeit" <christoph.adom...@gatworks.de> > À: "ceph-users" <ceph-users@lists.ceph.com> > Envoyé: Vendredi 10 Juillet 2015 02:13:04 > Objet: [ceph-users] How to prefer faster disks in same pool > > Hi Guys, > > I have a ceph pool that is mixed with 10k rpm disks and 7.2 k rpm disks. > > There are 85 osds and 10 of them are 10k > Size is not an issue, the pool is filled only 20% > > I want to somehow prefer the 10 k rpm disks so that they get more i/o > > What is the most intelligent wy to prefer the faster disks ? > Just give them another weight or are there other methods ? > > Thanks > Christoph > > > -- > Christoph Adomeit > GATWORKS GmbH > Reststrauch 191 > 41199 Moenchengladbach > Sitz: Moenchengladbach > Amtsgericht Moenchengladbach, HRB 6303 > Geschaeftsfuehrer: > Christoph Adomeit, Hans Wilhelm Terstappen > > christoph.adom...@gatworks.de Internetloesungen vom Feinsten > Fon. +49 2166 9149-32 Fax. +49 2166 9149-10 > _______________________________________________ > 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 >
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