--- fixes: - | Removed the hard coding of osd_pool_default_min_size. Setting this value to 1 can result in data loss in operating production deployments. Not setting this value (or setting it to 0) will allow ceph to calculate the value based on the current setting of osd_pool_default_size. If the replication count is 3, then the calculated min_size is 2. If the replication count is 1, then the calcualted min_size is 1. For a POC deployments using a single OSD, set osd_pool_default_size = 1. See description at http://docs.ceph.com/docs/master/rados/configuration/pool-pg-config-ref/ Added CephPoolDefaultSize to set default replication size. Default value is 3.