[rrd-developers] Re: Owen DeLong's request for adding'deleting DS/RRAs

[Tobias Oetiker]

Today Jake Brutlag wrote:

 |
 |
 | I don't follow the users list, but I assume there has been some
 | discussion of the technical difficulties of implementing this sort of
 | feature. As a general comment, because of the data layout,
 | adding/deleting RRAs should be easier than adding/deleting DSs.
 |
 | Instead of implementing this within RRDtool, it may be simpler to
 | implement these functions as utility scripts that manipulate the XML
 | dump. Then restore can be used to generate a RRD file. I have a perl
 | script that deletes RRAs from a XML dump; I can at look at how difficult
 | it would be polish up the code and make it available. I have another
 | script that adds RRAs specifically for upgrading existing RRDs to take
 | advantage of the aberrant behavior stuff I've added to 1.1.x. This
 | script might be modified to serve as a general "add RRA" utility script.
 |
 | Any preference for using external utility scripts versus a new RRDtool
 | function?

I would also suggest that implementing this as a perl utility might
be much simpler than adding more c code still ... and such tasks
are not time critical so perl is the ideal fehicle in my eyes ...

tobi
 |
 | Jake
 |
 | Jake Brutlag
 | Network Analyst
 | Microsoft WebTV
 |
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