On Fri, 14 Oct 2005, Carsten Lorenz wrote: > Since we want to backup one tera-byte of data this would last more than a > week.
i've never looked closely at why the first backup is so slow -- and i've heard the report from lots of folks... i tend to use rsync for the initial backup, and then use rdiff-backup with "--force" the next time (which will generate one increment and create the rdiff-backup-data subdirectory). the incremental runs are a lot faster ... although i've never tried it on a TB of data. here are the average stats for daily backups on a filesystem i maintain with a couple hundred mail/web accounts, with the backup occuring over a 768k dsl line: --------------[ Average of 31 stat files ]-------------- ElapsedTime 12966.16 (3 hours 36 minutes 6.16 seconds) SourceFiles 1153830.35484 SourceFileSize 108174471204.0 (101 GB) MirrorFiles 1153245.22581 MirrorFileSize 108115114552.0 (101 GB) NewFiles 872.193548387 NewFileSize 173906366.29 (166 MB) DeletedFiles 287.064516129 DeletedFileSize 136894182.742 (131 MB) ChangedFiles 9703.90322581 ChangedSourceSize 9800370636.0 (9.13 GB) ChangedMirrorSize 9778026167.13 (9.11 GB) IncrementFiles 10880.3548387 IncrementFileSize 321359631.484 (306 MB) TotalDestinationSizeChange 380716283.903 (363 MB) Errors 0 > Has anyone hints how to speedup rdiff-backup? mounting the backup filesystem noatime,nodiratime probably helps a bit. -dean _______________________________________________ rdiff-backup-users mailing list at [email protected] http://lists.nongnu.org/mailman/listinfo/rdiff-backup-users Wiki URL: http://rdiff-backup.solutionsfirst.com.au/index.php/RdiffBackupWiki
