[ceph-users] How to set correct pg_num?

As the doc http://ceph.com/docs/master/rados/operations/placement-groups/ I get this formula: (OSDs * 100) Total PGs = Replicas In my ceph cluster have 1 pool, 5 osds,2 replicas, so I have set pg_num to 250. one day , i ned to add a pool(2 pools), what

[ceph-users] qemu-kvm with rbd mem slow leak

CPU: Intel(R) Xeon(R) CPU E5620 @ 2.40GHz *2 MEM: 32GB KVM: qemu-kvm-0.12.1.2-2.355.el6.2.cuttlefish.async.x86_64 Host: CentOS 6.4, kernel 2.6.32-358.14.1.el6.x86_64 Guest: CentOS 6.4, kernel 2.6.32-279.14.1.el6.x86_64 Ceph: ceph version 0.67.4 (ad85b8bfafea6232d64cb7ba76a8b6e8252fa0c7)