Incremental backup saves more files than needed

[Rogach]

I'm using Ubuntu 10.10. I tried sbackup 0.11.3 (from Ubuntu repositories) and 0.11.4 (from ppa here), and both are affected with this bug.
The problem is that sbackup does full or nearly full backup instead of incremental most of the time (somtimes it does it as it should, though). The backup directory is still named ".inc", and I looked into log file - it says something like "Maximum free size required is '285 MiB 613 KiB 233'", and after that - "Total bytes written: 13337548800 (13GiB, 4.3MiB/s)".

[Rogach (platon7pronko)]

The same problem also exists in sbackup 0.11.2.

[Jean-Peer Lorenz (peer.loz)]

Thank you for using sbackup and for taking the time reporting this bug.

Does this problem also encounters with sbackup 0.11.4? Does your system has any specific characteristics such as FAT partitions, NFS etc.?

The issue is somehow related to TAR and how TAR collects files for the actual backup.

Thanks for your help.

[Rogach (platon7pronko)]

Yes, I also encountered this problem with sbackup 0.11.4 and 0.11.3.
No, nothing special - simple ext4 filesystem. I backupped some directories in /home and in /var/www, nothing else.
One thing I need to notice - all that files reside on SSD drive, maybe it's characteristics can cause the bug?