[rrd-users] Re: extending RRAs... scripts? suggestions?

[Tobias Oetiker]

Today Dave Plonka wrote:

 |
 |
 | RRD users,
 |
 | I'm interested in extending my RRAs.  Basically I've got lots of ".rrd"
 | files that were created nearly 2 years ago, e.g.:
 |
 |    rrdtool create foo.rrd --step 300 \
 |    DS:bar:ABSOLUTE:400:U:U \
 |    RRA:AVERAGE:0:1:600 \
 |    RRA:AVERAGE:0:6:600 \
 |    RRA:AVERAGE:0:24:600 \
 |    RRA:AVERAGE:0:288:732 \
 |    RRA:MAX:0:24:600 \
 |    RRA:MAX:0:288:732
 |
 | and real soon now they will begin to lose old daily AVERAGE and MAX
 | values.  I guess I just ned to be able to extend those daily RRAs to
 | perhaps 5 years so I get some breating room.
 |
 | Anyone have a script around to do this?
 |
 | If not, I'd like to write one which allows me to add more rows to the
 | end of the (last?) RRA by using "rrdtool dump" and "rrdtool restore",
 | somewhat similarly to the way "add_ds" works.  I'm considering using
 | the hacked XML::Simple that I used in the early "log2rrd"
 | ("http://net.doit.wisc.edu/~plonka/log2rrd/") to grok the "rrdtool
 | dump" output.
 |
 | Alternatives or caveats with this proposed method are welcome (please
 | Cc me personally), as I need to do this *soon*.

how about rrdtool resize ?

tobi
 |
 | Thanks,
 | Dave
 |
 |

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