[rrd-users] Re: Preventing counter wraps

[alex at ergens.op.Het.Net]

alex at ergens.op.Het.Net wrote:

something which is missing an important part :-(

> The only alternative is to disallow wrapping altogether.  The "derive"
> type does this as it will discard negative increments.
> This will block both the real and the false wraps.

Forgot about the minimum value which has to be set to zero...

Use "rrdtool tune filename --minimum xxx:0" to do this.

By itself, derive does allow for negative deltas.  Sorry for the
confusion!

regards,
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