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

       Alex van den Bogaerdt <alex@vandenbogaerdt.nl>

1.7.2                                              2025-03-04                                       RRDRESIZE(1)

       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 rrdtoolinfo.

       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.

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

       The new .rrd file, with the modified RRAs, is written to the file resize.rrd in  the  current  directory.
       Theoriginal.rrdfileisnotmodified.

       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.

rrdtoolresizefilenamerra-numGROW|SHRINKrows