On Thu, Aug 07, 2003 at 03:44:51PM +0200, Herbert Pötzl wrote: > anyway, as pointed out in another response, there is > no good way, at least none I know of, to find the > blocks changed since the last backup ... The DM snapshot target already keeps track of which blocks have been written. For incremental backup, we really only need to know the block numbers. Why not a new block-meta-data-only snapshot target that just records block numbers? That should have *much* lower overhead and consume insignificant disk space. For archival storage, I've lately become enamored of hashed-indexing as used in Plan 9's Venti (for a single server target) or the various distributed-hash systems (Chord, etc.) for distributed, replicated storage. Regards, Bill Rugolsky _______________________________________________ linux-lvm mailing list linux-lvm@sistina.com http://lists.sistina.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
