I am looking at disk activity on reads from an erasure coded pool (k=2, m=1). I have a contrived setup where I am reading a bunch of names that are all in the same PG. I see disk activity only from the 2 K osds, not the M osd. As I understand http://ceph.com/docs/master/architecture/, in this situation all 3 osds would be read and the first two to return would be used but that is not what I see. In this particular contrived setup, all of the OSDs are on a single node, would that be causing the 2-OSD read behavior that I am seeing? -- Tom Deneau -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
