On Thu, Aug 07, 2003 at 11:11:27AM -0400, Bill Rugolsky Jr. wrote: > On Thu, Aug 07, 2003 at 03:44:51PM +0200, Herbert P?tzl 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. This scheme only works if you don't use the device while you are taking an incremental backup. I think the real solution will be based around snapshots. - Joe _______________________________________________ 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/
