On Thu, Feb 19, 2009 at 10:06:26AM +0200, Michael Keller wrote: > For our block-based incremental backup software we need to monitor all > writes to a device, and report them to our user mode application for > further processing. Sounds like a variant of dm snapshot code. What precisely do you need? Notification of every block every time it is changed? Or just a list of all the blocks that changed within a defined period (i.e. since the last backup)? > 3. Are the interfaces of the device mapper relatively stable? (Assume that > our target is not general enough to be included into mainline, and we'll > have to do the API chasing ourselves.) If integrated nicely into dm, it'll go upstream. Alasdair -- agk@xxxxxxxxxx -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
