[rrd-users] Re: populate RRD with old data

Vargas, Miguel mvargas at tnsi.com
Mon Jan 20 23:55:37 MET 2003

When I try to do a rrdtool update with an older timestamp I get:
ERROR: illegal attempt to update using time 1042731000 when last update time
is 1043099100 (minimum one second step)

Does this mean I can't use rrdtool update to add missing historical data?
Why not?

-----Original Message-----
From: Dulac, Daniel (Dan) [mailto:ddulac at aprisma.com]
Sent: Wednesday, January 15, 2003 1:40 PM
To: Vargas, Miguel; 'rrd-users at list.ee.ethz.ch'
Subject: RE: [rrd-users] populate RRD with old data

It will properly update each RRA as long as each update time-stamp is close
to your 'step' interval--in your case, 900 seconds.

-----Original Message-----
From: Vargas, Miguel [mailto:mvargas at tnsi.com] 
Sent: Wednesday, January 15, 2003 1:40 PM
To: 'rrd-users at list.ee.ethz.ch'
Subject: [rrd-users] populate RRD with old data

I have a database with two years of 15min router interface utilization data.
I would like to get this data into RRD so I can graph it MRTG style, i.e.
daily, weekly, monthly, yearly.  

I created RRAs like this:
rrdtool create $ifname.rrd --start 1009861200 --step 900 

My question is, how do I populate my RRAs with the old data?  If I do a
rrdtool update with a time stamp from a year ago, will it go into the
correct RRA?
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