ceph官方博文：
http://ceph.com/community/blog/
rgw根据rgw用户来分pool存放数据
http://cephnotes.ksperis.com/blog/2014/11/28/placement-pools-on-rados-gw
源码相关
http://my.oschina.net/u/2271251/blog?disp=2&p=1&catalog=568898
http://irq0.org/articles/ceph/journal
http://www.sysnote.org/?p=301
ceph.conf里面：
filestore fiemap = false //关于rbd全零
radosgw相关博文
http://qinghua.github.io/ceph-radosgw-replication/?utm_source=tuicool&utm_medium=referral
ceph+docker：
http://qinghua.github.io/ceph-demo/
