Open Stack

Hi all,

Does anyone have any recommendations for good tools to perform
file-system/tree backups and restores to/from a (Ceph RGW-based)
object store (Swift or S3 APIs)? Happy to hear about both FOSS and
commercial options please.

I'm interested in:
1) tools known to work or not work at all for a basic file-based data backup

Plus these extras:
2) preserves/restores correct file metadata (e.g. owner, group, acls etc)
3) preserves/restores xattrs
4) backs up empty directories and files
5) supports some sort of snapshot/versioning/differential
functionality, i.e., will keep a copy or diff or last N versions of a
file or whole backup set, e.g., so that one can restore yesterday's
file/s or last week's but not have to keep two full copies to achieve
it
6) is readily able to restore individual files
7) can encrypt/decrypt client side
8) anything else I should be considering?

-- 
Cheers,
~Blairo