[rrd-users] Re-structuring data in RRD files?
chris at fedde.littleton.co.us
Wed Feb 9 08:54:15 MET 2000
Because of some initial ignorance on my part I have structured some
of my rrd files so that they kept an unnecessarily large volume of
duplicate historical data. Now that I understand what is going on
better I want to re-structure the data so that I'm not waisting
so much space on unnecessary detail.
To achieve this I need a method to move the old data into new files with a
The method that I am considering is to create a new rrd file with
the old DS definitions and new RRA settings. Then simply reformat
the output of 'rrdtool fetch' into a form that is acceptable to
'rrdtool update' through a pipe.
Is there a better way than this?
A couple additional questions, then I'll shut up :-)
Is there a way to extract the meta-data from an rrd file short
of parsing the XML from an 'rrdtool dump'? Preferably this
could generate text useful as a template for a command line
to 'rrdtool create'.
Is there a command line argument analogous to 'rrdtool last'
that fetches the time-stamp for the earliest "non-NaN" data in
Chris Fedde 303 773 9134
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