Les Mikesell schrieb:
> Ralf Gross wrote:
> > Ok, the first rsync full backup (488) completed. It took 500min. longer than
> > the last tar full backup (482).
> > 
> > Backup      Type    Filled  Level   Start Date      Duration/mins  Age/days
> > 482         full    yes     0       5/19 02:05      3223.2         11.5
> > 483         incr    no      1       5/21 07:49        89.6          9.2
> > 484         incr    no      2       5/22 03:05       136.4          8.4
> > 485         incr    no      3       5/23 03:05       119.1          7.4
> > 486         incr    no      4       5/24 03:05       111.4          6.4
> > 487         incr    no      1       5/25 03:05       165.9          5.4
> > 488         full    yes     0       5/26 21:00      3744.2          3.7
> > 489         incr    no      1       5/29 12:15       394.1          1.1
> > 490         incr    no      2       5/30 03:05       190.8          0.4
> > 
> > I'm not sure if the checksum caching will compensate this in after the 3rd
> > backup. Anything else I could do to tune rsync?
> > 
> 
> You could force a full to start on Friday evening so weekly scheduling will 
> keep 
> the full runs on weekends if they take more than a night to complete.  
> Depending 
> on how much daily change you have, you might want to set incremental levels 
> for 
> the intermediate runs.

I use BackupPC and bacula for backups, I once lost a complete backuppc
pool/filesystem by a defect raid controller. So I need 2 backup
windows. But the option to do a full backup only once in 2 weeks
sounds a resonable option.

What I not quite understand is that inc. backup also take much longer
than before.
 
> A more extreme change would be to edit Rsync.pm to not add the --ignore-times 
> option on fulls.  I haven't needed this myself yet but I think it would make 
> a 
> big difference in speed - at the expense of not checking files for unlikely 
> but 
> possible differences.

Hm, I think I'll leave this optios as it is. In the list archives I
found some posts about the --whole-file option, but no definitive
answer if RsyncP supports it and if it's usefull at all.


Ralf
 

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