NAME
rrdresize - alters the size of an RRA and creates a
new .rrd file
SYNOPSIS
rrdtool resize
filename rra-num GROW|SHRINK
rows
DESCRIPTION
The resize function
is used to modify the number of rows in an RRA.
- filename
- the name of the RRD you want to alter.
- rra-num
- the RRA you
want to alter. You can find the number using rrdtool info.
- GROW
- used if you want to add extra rows to an
RRA. The extra rows will be inserted as the
rows that are oldest.
- SHRINK
- used if you want to remove rows from an
RRA. The rows that will be removed are the
oldest rows.
- rows
- the number of rows you want to add or
remove.
NOTES
The new .rrd file, with the
modified RRAs, is written to the file resize.rrd in the
current directory. The original .rrd file is not modified.
It is possible to abuse this tool and get strange results by
first removing some rows and then reinserting the same amount
(effectively clearing them to be Unknown). You may thus end up with
unknown data in one RRA while at the same
timestamp this data is available in another RRA.
AUTHOR
Alex van den Bogaerdt
<alex@ergens.op.het.net>