[collectd] add/change RRAs in RRD?

[Andreas Schildbach]

Hi everyone,

I am using collectd 3.10.4-1 from Debian Etch.

By default, the package is creating the following RRAs ("timespans"):

 PDP per CDP |  Resolution  | Data points | Timespan
 ------------+--------------+-------------+---------
           1 | 10.0 seconds !        8640 ! 1 day
          50 |  8.3 minutes |        1210 | 1 week
         223 | 37.2 minutes |        1202 | 1 month
        2635 |  7.3 hours   |        1201 | 1 year

I'd like to automatically add one more RRA to each RRD and DS for a
timespan of about 5 years.

Where can I change the defaults?

How can I convert the existing RRDs?

Regards,

Andreas