Hi Don, Take a look at CRUSH settings. http://ceph.com/docs/master/rados/operations/crush-map/
Jason 2015-01-22 2:41 GMT+08:00 Don Doerner <[email protected]>: > OK, I've set up 'giant' in a single-node cluster, played with a replicated > pool and an EC pool. All goes well so far. Question: I have two different > kinds of HDD in my server - some fast, 15K RPM SAS drives and some big, > slow (5400 RPM!) SATA drives. > > Right now, I have OSDs on all, and when I created my pool, it got spread > over all of these drives like peanut butter. > > The documentation (e.g., the documentation on cache tiering) hints that > its possible to differentiate fast from slow devices, but for the life of > me, I can't see how to create a pool on specific OSDs. So it must be done > some different way... > > Can someone please provide a pointer? > > Regards, > > -don- > > _______________________________________________ > ceph-users mailing list > [email protected] > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > >
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