[rrd-users] Re: Migrating data from one RRA to another one

Michael Grice grice at binc.net
Mon May 3 06:58:09 MEST 2004

* Alex van den Bogaerdt <alex at ergens.op.het.net> [040502 17:00] wrote:
> On Sat, May 01, 2004 at 07:14:35PM +0200, Gerhard Strangar wrote:
> > I'd like to use the data from one RRA and use it as input for another
> > one (having a different step size). My idea is to create a new RRD with
> > all needed RRAs and then read the RRA from the old RRD and use rrdtool
> > update to insert the data. But how do a read from the RRA? I don't think
> > using rrdtool dump and applying sed to the XML file is a good idea.
> > Any suggestions?
> 1: why not?
> 2: use rrdtool fetch perhaps?

Gerhard, do you know perl? If you use the RRDs module (which comes with
rrdtool), you can pull the data from the old RRD's pretty and stuff them
into the new RRD pretty easily.

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