The context is a file in a dataset cloned from a snapshot.
If the file has not been modified since the clone was created,
I'd like to ascribe to the file attributes associated with
the origin snapshot.
1) Is it feasible to determine from the vnode relating to
the clone file if that file is unmodified from the origin?
(I'm hoping this can be as simple as verifying that the
file uses the same data blocks as it did in the snapshot.)
2) Could modifications of other files in the clone dataset
make the "unchanged" status of an unmodified file more
difficult to verify?
Thanks -JZ
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