> I have been using rrdtool 1.2 for many years. It just works and I never
> needed to upgrade. I am now rebuilding that system and would like to
> upgrade to rrdtool 1.4. My question is, do I need to do anything to my
> existing RRDs for the new version to work with them? Or will they just
> work? If I do need to convert them in some way, a pointer to how this
> is done would be great.

It should just work - v1.4.x can read and write files created by v1.2.x, as 
long as it is on the same architecture, and the rrdtool was compiled by a 
similar compiler.  If you use a very different compiler to make the rrdtool 1.4 
then there is a slim possibility that the format would be incompatible - in 
this case, you export to XML using the old rrdtool and import using the new 
rrdtool.  This is very unlikely to be necessary, though.

Usually, you can install the 1.4 in parallel, and just change the appropriate 
paths or library paths.

If you are using Perl RRDs.pm, and have installed in the site_perl path, then 
be careful that you remove the old RRDs.pm and associated objects before 
installing the new ones.  Sometimes you can get conflict if you accidentally 
load the new RRDs.pm but somehow get the old RRDs.so file.

Steve


Steve Shipway
ITS Unix Services Design Lead
University of Auckland, New Zealand
Floor 1, 58 Symonds Street, Auckland
Phone: +64 (0)9 3737599 ext 86487
DDI: +64 (0)9 924 6487
Mobile: +64 (0)21 753 189
Email: [email protected]
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