Hi folks, Over at http://backuppc.sourceforge.net/faq/limitations.html#incremental_backups_might_not_be_accurate there is documented a limitation of BackupPC incrementals with tar: since it uses timestamps only, it may miss if someone does something like unpack a ZIP file that contains files with timestamps in the past. It also won't note if files were deleted.
However, this is not necessarily an insoluble problem with GNU tar. GNU tar has a "listed incremental" mode which works around this problem. See the documentation at [1]. I am thinking it may be possible to do this with some simple shell scripting (writing out a snapshot file based on the backup number, and for incrementals copying the snapshot file from the backup the incremental is based on over to one for the current run) without modification to BackupPC itself. However, I'm unsure whether BackupPC's custom tar parsing would work well with the result. It would certainly be better to see this code integrated into BackupPC directly. Thoughts? [1] http://www.gnu.org/software/tar/manual/html_node/Incremental-Dumps.html#SEC94 ------------------------------------------------------------------------------ Free Software Download: Index, Search & Analyze Logs and other IT data in Real-Time with Splunk. Collect, index and harness all the fast moving IT data generated by your applications, servers and devices whether physical, virtual or in the cloud. Deliver compliance at lower cost and gain new business insights. http://p.sf.net/sfu/splunk-dev2dev _______________________________________________ BackupPC-users mailing list [email protected] List: https://lists.sourceforge.net/lists/listinfo/backuppc-users Wiki: http://backuppc.wiki.sourceforge.net Project: http://backuppc.sourceforge.net/
