Hi, I'm begin to look at rbd mirror features. How much space does it take ? Is it only a journal with some kind of list of block changes ? and how much io/s does it take ? worst case, 4k block write , how much write in journal ? My osd are ssd, 1journal + data for each osd/ssd, but I don't overloaded them with write currently. Regards, Alexandre _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com