On 14/02/14 22:07, Vikrant Verma wrote:
Hi All, I was trying to define QoS on volumes in the openstack setup. Ceph Cluster is configured as Storage back-end for images and volumes. As part of my experimentation i thought of clubbing few disks (say HDD) with one type of QoS and other few disks (say SSD) with another type of QoS. But the configuration/design does not seems to be efficient as you suggested, rather i am trying now to put QoS on volumes itself. Thanks for your suggestions.
If you are using Ceph as a storage backend for Openstack, then I would suggest that redundancy is possibly just as important as QoS (ahem - zero QoS if storage is completely unavailable)! You really want to have 2 (or even better 3) replica copies of your data - which means at least 2 (or 3) OSD on different machines.
Regards Mark _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
