[linux-lvm] Getting copied blocks listing from LVM2 Snapshots

[Prashanth Radhakrishnan]

Hi,

Do LVM2 CoW snapshots provide some interface through which one can fetch 
the list of blocks which have been copied off from its parent ?

I tried looking on the web around but could not find it. Just wanted to 
check before I started to look at the source..

Appreciate any help.

thanks,
prashanth