[rrd-users] XML dump/restore: How to handle "cdp_prep"?

Christian Schrötter rrdtool at lists.kb19.at
Tue Aug 19 17:32:48 CEST 2014

Am 17.08.2014 23:53, schrieb Christian Schrötter:
> Am 17.08.2014 12:04, schrieb Alex van den Bogaerdt:
>> If nothing changes, then I think you should keep the cdp_prep data
>> and do not touch it. RRDtool can continue to work as before, build a
>> new CDP (it may be halfway doing so), as if nothing happened. The 
>> only
>> change is that you have more rows available for the past. You are
>> filling in those rows using historic data, which is okay and does 
>> not
>> affect the present time.
> I'll test it tomorrow with some real RRD files from my
> munin-master-server at home. I'll let you know the results :-)

Done! I've successfully resized/imported (1 year -> 3 years) ~1700 RRD 
files in ~12 hours on a weak ARM system. Thanks for your input :-)

With kind regards,
Christian Schrötter

More information about the rrd-users mailing list