Unionfs patchset p19 commit?

[Ivan Voras]

Kurt Jaeger wrote:

> There's another topic if one uses unionfs in jail() setups: How to
> backup the files, and only those files that a different from
> the base ?

If you have a reasonable number of files you can maybe get away with the 
"brute force" approach - gather stat's for all files in the base FS, 
gather stat's of all files "above" and calculate an intersection with 
different inode numbers.

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