I don't know whether it would suit you at all, but I'll mention
http://allmydata.org/trac/tahoe for the simple reason it looks interesting and it only just announced version 1.0 RC's mention of Ceph jogged my memory on this. Matt -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html