hi Tommi, Thanks for the reply. one more question, what does the rbd pool mean? how will it affect the ceph? Thanks, Sheng On Thu, Nov 3, 2011 at 12:55 PM, Tommi Virtanen <tommi.virtanen@xxxxxxxxxxxxx> wrote: > On Thu, Nov 3, 2011 at 10:20, sheng qiu <herbert1984106@xxxxxxxxx> wrote: >> Hi, >> >> is there a way to set ceph to have 0 replicas, and only have the >> original data on osd? i just want to see how much the cost is to have >> replicas. >> i tried to ceph osd pool set metadata size 0, ceph osd pool set data >> size 0. but not allowed. > > It's the number of copies, not the number of replicas. 0 copies is an > interesting paradox. Try 1. > -- Sheng Qiu Texas A & M University Room 302 Wisenbaker email: herbert1984106@xxxxxxxxx College Station, TX 77843-3259 -- 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