[rrd-developers] rrd_fetch seek issue

[Tobias Oetiker]

Hi Daniel,

Where do you see this ?

note that there is code to wrap the rra_pointer back to the start
of the archive once it ventures over the end of the archive ...

            if (rra_pointer >= (signed) rrd.rra_def[chosen_rra].row_cnt) {
                rra_pointer -= rrd.rra_def[chosen_rra].row_cnt;
                if (rrd_seek(rrd_file, (rra_base + rra_pointer * (*ds_cnt)
                                        * sizeof(rrd_value_t)),
                             SEEK_SET) != 0) {
                    rrd_set_error("wrap seek in RRA did fail");
                    goto err_free_data;
                }
            }


cheers
tobi




Today Daniel.Pocock at barclayscapital.com wrote:

>
>
> >
> > the patch is actually very simple ...
> >
>
>
> I think this has exposed another issue, in my latest attempt to run my
> tests:
>
> rows = 120960
> cur_row = 104821
> start_offset = 116378
>
> rra_pointer = 221200
>
> rra_pointer shouldn't be greater than rows, should rra_pointer =
> rra_pointer % rows perhaps?
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-- 
Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten, Switzerland
http://it.oetiker.ch tobi at oetiker.ch ++41 62 775 9902 / sb: -9900