[rrd-users] Re: Combining/joining daily .rrds into a weekly rrd file

[spiegela at birch.net]

  I'm not quite sure where you're going.  If you'd like to keep both daily and
weekly stats, just create your RRD with both RRAs (keep daily data for a week,
and weekly data for a year, or whatever).

  I have, however, considered merging RRDs for other purposes (like creating
group statistics for a bunch of devices).

  This may be the hard way, but I think I would dump the RRDs to XML merge them
that way, and then convert back to RRD.

  Some of the more experienced/knowlegeable guys may have more to say on the
subject.

Aaron Spiegel

Quoting Peter.Janda at na.manpower.com:

> 
> Greetings,
> 
> I have been generating daily .rrd files which are built from tables that I
> clean up after the .rrd is created and graphed. (I save the.rrds and .gifs)
> I've attempted to join the tables of the .rrd files (using the fetch
> command) so that I can feed that data into another .rrd.
> This new .rrd shows that the tables are flowing into it (in scientific
> notation form) but the database doesn't increase in size
>  and the graph (.gif) is created but it isn't what I wanted or correct.
> 
> Does anyone recall if there was ever a similar discussion in the archives?
> If so, then I'll hunt. If not, does this seem possible to do?
> I don't want to re-process every days worth from the original scripts
> unless I have too. If this isn't possible I'll need to re-think the scripts
> so that this is done on a daily basis (ahead of time).
> 
> Thanks,
> 
> Peter Janda
> 
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