On 19/08/13 18:17, Guang Yang wrote:
3. Some industry research shows that one issue of file system is the metadata-to-data ratio, in terms of both access and storage, and some technic uses the mechanism to combine small files to large physical files to reduce the ratio (Haystack for example), if we want to use ceph to store photos, should this be a concern as Ceph use one physical file per object?
If you use Ceph as a pure object store, and get and put data via the basic rados api then sure, one client data object will be stored in one Ceph 'object'. However if you use rados gateway (S3 or Swift look-alike api) then each client data object will be broken up into chunks at the rados level (typically 4M sized chunks).
Regards Mark _______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
