[rrd-users] Re: info joinin rrd archives

Alex van den Bogaerdt alex at slot.hollandcasino.nl
Thu Sep 6 10:45:24 MEST 2001

Igor Longagnani wrote:
> Hi everybody, newbie question.
> Anyone has suggestions
> on how to join 2 different archives
> (i.e. august.rrd and july.rrd with)
> avoiding a single update for every value?
> I tried a single update too with all values, but
> it failed?
> Is there a limit on values updatable at once?

Dump both files to xml. In the august file, replace every line that is
set in the july file (not just every line, only the relevant lines).

Now restore the july file.

The relevant lines will probably be every line where the time stamp
is a date/time in July.  For UTC times: everything from 993945600 to

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