RRDRESIZE(1)                        rrdtool                       RRDRESIZE(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_e
               the 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
       rreessiizzee..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>



1.3.8                             2009-02-21                      RRDRESIZE(1)