Hi,
Is it possible to take file level snapshots in ZFS? Suppose I want to
keep a version of the file before writing new data to it, how do I do
that? My goal would be to rollback the file to earlier version (i.e.
discard the new changes) depending upon a policy.  I would like to
keep only 1 version of a file at a time and while writing new data,
earlier version will be discarded and current state of file (before
writing) would be saved in the version.

Thanks,
-Atul
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