Am 07.02.2014 14:42, schrieb Mark Nelson: > Ok, so the reason I was wondering about the use case is if you were doing RBD > specifically. Fragmentation has been something we've periodically kind of > battled with but still see in some cases. BTRFS especially can get pretty > spectacularly fragmented due to COW and overwrites. There's a thread from a > couple of weeks ago called "rados io hints" that you may want to look > at/contribute to. Thank you for the hint. Sage's proposal on ceph-devel sounds good, so I'll wait for an implementation. Regards Christian -- Dipl.-Inf. Christian Kauhaus <>< · kc@xxxxxxxxxx · systems administration gocept gmbh & co. kg · Forsterstraße 29 · 06112 Halle (Saale) · Germany http://gocept.com · tel +49 345 219401-11 Python, Pyramid, Plone, Zope · consulting, development, hosting, operations _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com