1 Add 'real' disk usage to db format so that sparse files are packed efficiently.
2 - A sparse file takes up less disk space than the size of the file.
3 Currently, lsbackups calculates enough space to include the whole thing on
4 the CD. With an ext2 filesystem there is no need to do this. It only needs
5 to reserve enough space for the actual disk usage.
6 - This might not be true if the target image uses an ISO fs. I should do some
9 If a file has multiple hard-links then this is not handled efficiently.
10 lsbackups should only calculate space on the target filesystem for one
11 copy and actually preserve the hard-links. This will save space and
12 make restore more accurate since the hard-links will still be there