On Thu, 22 Nov 2012, Stefan Priebe - Profihost AG wrote: > Hello list, > > right now a rbd export exports exactly the size of the disk even if there is > KNOWN free space. Is this inteded to change? > > Might it be possible to export just differences between snapshots and merge > them later?
We were just talking about this the other day. Step 1 is to create a mechanism to output a list of block ranges that have/have not changed between snapshots. Step 2 is to export the incremental changes. The hangup there is figuring out a generic and portable file format to represent those incremental changes; we'd rather not invent something ourselves that is ceph-specific. Suggestions welcome! sage -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
