55 lines
1.2 KiB
Plaintext
55 lines
1.2 KiB
Plaintext
=head1 NAME
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rrdresize - alters the size of an RRA and creates a new .rrd file
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=head1 SYNOPSIS
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B<rrdtool> B<resize> I<filename> I<rra-num> B<GROW>I<|>B<SHRINK> I<rows>
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=head1 DESCRIPTION
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The B<resize> function is used to modify the number of rows in
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an B<RRA>.
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=over 8
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=item I<filename>
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the name of the B<RRD> you want to alter.
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=item I<rra-num>
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the B<RRA> you want to alter. You can find the number using B<rrdtool info>.
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=item B<GROW>
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used if you want to add extra rows to an RRA. The extra rows will be inserted
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as the rows that are oldest.
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=item B<SHRINK>
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used if you want to remove rows from an RRA. The rows that will be removed
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are the oldest rows.
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=item I<rows>
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the number of rows you want to add or remove.
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=back
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=head1 NOTES
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The new .rrd file, with the modified RRAs, is written to the file
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B<resize.rrd> in the current directory. B<The original .rrd file is not
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modified>.
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It is possible to abuse this tool and get strange results
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by first removing some rows and then reinserting the same amount (effectively
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clearing them to be Unknown). You may thus end up with unknown data in one
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RRA while at the same timestamp this data is available in another RRA.
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=head1 AUTHOR
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Alex van den Bogaerdt <alex@vandenbogaerdt.nl>
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