[dm-devel] dm snapshot diffs

[Groshev Dmitry <a2alt ya ru>]

Hello. I' m using LVM with snapshots on a big storage and for some reason I need to get some information that bare LVM doesn't provide. Is there a way to get a list of blocks that was changed since the snapshot was created? I see that snapshot-cow device if being filled, but how I can find a "old block in origin -> new block in cow" mapping?