- If rsync is enabled, show number of created/deleted/transferred
files in mail subject.
- Add options to show summary and/or detail message in mail body.
- Add option to skip btrbk if no files were transferred via rsync.
- Add option to call sync(1) prior to running btrbk.
- Add option to skip btrbk execution if no files were transferred.
When used without --inplace, rsync creates a new copy of the file and
moves it into place when it is complete, having the effect that btrfs
creates a new extent for the WHOLE file. With --inplace however, rsync
writes the updated data directly to the destination file, having the
effect that btrfs creates a new extent only for the differing part of
the file.
Axel Burri