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error403 wrote:
> However, using this method, I also found out that backuppc was
> copying EVERY files from the host, even on incremental backups,
> because (I assume) it needed to compare locally the files before
> updating the ones in the last backup.
> 
> So, my 2 questions are, is there a way to script a way to compare the
> files before the copy, to make a way to skip files that are not
> needed in the tar method, 

I would have thought the default config for a tar backup would be to use
the date/time of a file to decide whether or not to include it in the
backup... but I don't use this, perhaps you should check what flags you
are giving to tar for full/incremental...

> and is there a way to tell backuppc to NOT
> start if the mounted directory is empty to prevent empty backups?

- From the config.pl file:
# A backup of a share that has zero files is considered fatal. This is
# used to catch miscellaneous Xfer errors that result in no files being
# backed up.  If you have shares that might be empty (and therefore an
# empty backup is valid) you should set this flag to 0.
#
$Conf{BackupZeroFilesIsFatal} = 1;

This will mark the backup as failed, and so will retry as per your
configuration until it is successful.

Regards,
Adam
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