[rrd-users] Re: RRds::graph

[Alex van den Bogaerdt]

Marco Flohrer wrote:

> If i define minimal and maximal value for an data source,
> *UNKNOW* will be written to the database.
> But also time of last_update is changed to actual time.

Yes, an update is an update, even if you are updating with unknown.

> I want that in such a case time of last_update is _not_ changed and
> ds[In].last_ds is also untouched.
> My RRD's have only one data source.
> Is this in any form possible or have i to call 'rrdtool update' only if
> minimal and maximal value are OK and test this by myself?

That would probably be best.  However, maybe there's another solution
if you let us know your problem.

HTH
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