_R_R_D_R_E_S_I_Z_E(1)                         rrdtool                        _R_R_D_R_E_S_I_Z_E(1)

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

SSYYNNOOPPSSIISS
     rrrrddttooooll rreessiizzee _f_i_l_e_n_a_m_e _r_r_a_-_n_u_m  GGRROOWW_|SSHHRRIINNKK _r_o_w_s

DDEESSCCRRIIPPTTIIOONN
     The rreessiizzee function is used to modify the number of rows in an RRRRAA.

     _f_i_l_e_n_a_m_ethe name of the RRRRDD you want to alter.

     _r_r_a_-_n_u_m the  RRRRAA  you  want to alter. You can find the number using rrrrddttooooll
             iinnffoo.

     GGRROOWW    used if you want to add extra rows to an RRA. The extra  rows  will
             be inserted as the rows that are oldest.

     SSHHRRIINNKK  used  if you want to remove rows from an RRA. The rows that will be
             removed are the oldest rows.

     _r_o_w_s    the number of rows you want to add or remove.

NNOOTTEESS
     The new .rrd file, with the modified RRAs,  is  written  to  the  file  rree‐‐
     ssiizzee..rrrrdd in the current directory.  TThhee oorriiggiinnaall ..rrrrdd ffiillee iiss nnoott mmooddiiffiieedd.

     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.

AAUUTTHHOORR
     Alex van den Bogaerdt <alex@vandenbogaerdt.nl>

1.10.0                             2026-05-23                       _R_R_D_R_E_S_I_Z_E(1)
