RRDRESIZE(1)                        rrdtool                       RRDRESIZE(1)

       rrdresize - alters the size of an RRA and creates a new .rrd file

       rrdtool resize filename rra-num  GROW|SHRINK rows

       The resize function is used to modify the number of rows in an RRA.

               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.

       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

       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

       Alex van den Bogaerdt <alex@vandenbogaerdt.nl>

1.7.0                             2018-02-07                      RRDRESIZE(1)

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