On Feb 19, 2013, at 2:22 PM, Gregory Farnum <greg@xxxxxxxxxxx> wrote: > On Tue, Feb 19, 2013 at 2:10 PM, Noah Watkins <jayhawk@xxxxxxxxxxx> wrote: > > That is just truly annoying. Is this described anywhere in their docs? Not really. It's just there in the code--I can figure out the metric if you're interested. I suspect it is local node, local rack, off rack ordering, with no special tie breakers. > I don't think it would be hard to sort, if we had some mechanism for > doing so (crush map nearness, presumably?), Topology information from the bucket hierarchy? I think it's always some sort of heuristic. >> 1. Expand CephFS interface to return IP and hostname > > Ceph doesn't store hostnames anywhere — it really can't do this. All > it has is IPs associated with OSD ID numbers. :) Adding hostnames > would be a monitor and map change, which we could do, but given the > issues we've had with hostnames in other contexts I'd really rather > not. What is the fate of hostnames used in ceph.conf? Could that information be leveraged, when specified by the cluster admin? -Noah-- 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
