On Mon, Feb 18, 2019 at 3:58 PM André Malm <admin@xxxxxxxxxx> wrote: > > Ok, but I don't want to keep old snapshots of the child volumes. Only > the latest and then diffing it in regards to the master. Would that be > possible? In order to do an incremental send/receive you need to have the -p snapshot on both source and destination file systems. You can delete snapshots older than that. I still don't understand why you're diffing in regards to master. It's going to be inherently inefficient because you've said a large amount of the contents of master aren't important; but by using it as the -p reference snapshot, you're asking send to do a comparison that includes a lot of metadata you don't care about. It's more efficient to diff the incremental snapshots of the changing state of "childofmaster" subvolume. -- Chris Murphy
