Hi list, hi Josh. This came up in an OpenStack conversation today: if we store "template images" and "volumes" both in RBD, it would make a lot of sense prevent the Nova nodes from accidentally writing to the golden images. That is, have the templates in a separate pool that is writeable to Glance, but read-only for the Nova nodes. To support this, we'd need to make sure the RBD layering we're building is able to use base images in a separate pool. (And handle the ugly case where after a misconfiguration the client can't access the base image anymore...) Josh, can you say whether that falls in line with what's been planned for the layering? -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
