On Wed, Feb 28, 2007 at 05:05:30PM -0800, Travis Spencer wrote: > I am trying to fetch all data from the begging of an RRD file. I'm > not sure when the first entry was added to it
Think of the database as a wheel. There is no beginning nor an end. There is a pointer to the last entry written. That's the most recent available data. Next to it is older, next to that one is older, and so on. When you are back at the pointer, you have seen all available data. If you didn't know this, perhaps you should look at the documentation, the tutorials and my site for more info. Find out (using rrdtool info) how much entries there are on the wheel. Find out how much time is stored in each entry. Multiply those and you know how much data to fetch. If each "step" is 300 seconds, if there are 24 steps per CDP, then each CDP is 7200 seconds (2 hours). If there are 600 CDPs in this RRA, then there is 1200 hours (300*24*600) worth of data available. In this example, --start now-1200h will probably do. Perhaps add --end start+24h to limit the amount of rows returned. HTH -- Alex van den Bogaerdt http://www.vandenbogaerdt.nl/rrdtool/ _______________________________________________ rrd-users mailing list [email protected] https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users
