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.Adomeit@xxxxxxxxxxx> À: "ceph-users" <ceph-users@xxxxxxxxxxxxxx> Envoyé: Vendredi 10 Juillet 2015 02:13:04 Objet: 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.Adomeit@xxxxxxxxxxx Internetloesungen vom Feinsten Fon. +49 2166 9149-32 Fax. +49 2166 9149-10 _______________________________________________ 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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