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131 .IX Title "RRDRESIZE 1"
132 .TH RRDRESIZE 1 "2008-03-15" "1.3.0" "rrdtool"
133 .SH "NAME"
134 rrdresize \- alters the size of an RRA and creates a new .rrd file
135 .SH "SYNOPSIS"
136 .IX Header "SYNOPSIS"
137 \&\fBrrdtool\fR \fBresize\fR \fIfilename\fR \fIrra-num\fR \fB\s-1GROW\s0\fR\fI|\fR\fB\s-1SHRINK\s0\fR \fIrows\fR
138 .SH "DESCRIPTION"
139 .IX Header "DESCRIPTION"
140 The \fBresize\fR function is used to modify the number of rows in
141 an \fB\s-1RRA\s0\fR.
142 .IP "\fIfilename\fR" 8
143 .IX Item "filename"
144 the name of the \fB\s-1RRD\s0\fR you want to alter.
145 .IP "\fIrra-num\fR" 8
146 .IX Item "rra-num"
147 the \fB\s-1RRA\s0\fR you want to alter. You can find the number using \fBrrdtool info\fR.
148 .IP "\fB\s-1GROW\s0\fR" 8
149 .IX Item "GROW"
150 used if you want to add extra rows to an \s-1RRA\s0. The extra rows will be inserted
151 as the rows that are oldest.
152 .IP "\fB\s-1SHRINK\s0\fR" 8
153 .IX Item "SHRINK"
154 used if you want to remove rows from an \s-1RRA\s0. The rows that will be removed
155 are the oldest rows.
156 .IP "\fIrows\fR" 8
157 .IX Item "rows"
158 the number of rows you want to add or remove.
159 .SH "NOTES"
160 .IX Header "NOTES"
161 The new .rrd file, with the modified RRAs, is written to the file
162 \&\fBresize.rrd\fR in the current directory. \fBThe original .rrd file is not
163 modified\fR.
164 .PP
165 It is possible to abuse this tool and get strange results
166 by first removing some rows and then reinserting the same amount (effectively
167 clearing them to be Unknown). You may thus end up with unknown data in one
168 \&\s-1RRA\s0 while at the same timestamp this data is available in another \s-1RRA\s0.
169 .SH "AUTHOR"
170 .IX Header "AUTHOR"
171 Alex van den Bogaerdt <alex@ergens.op.het.net>