If an RRD hasn't been updated recently, and I try to invoke rrd_fetch
for a more recent time interval, it tries to seek on the file anyway - I
only discovered this issue when the RRD hadn't updated for over 2 hours,
and it tried to seek beyond the end of the file, causing this "seek
error in RRA" from rrd_fetch.c:
/* fill the gap at the start if needs be */
if (start_offset <= 0)
rra_pointer = rrd.rra_ptr[chosen_rra].cur_row + 1;
else
rra_pointer = rrd.rra_ptr[chosen_rra].cur_row + 1 +
start_offset;
if (rrd_seek(rrd_file, (rra_base + (rra_pointer * (*ds_cnt)
* sizeof(rrd_value_t))),
SEEK_SET) != 0) {
rrd_set_error("seek error in RRA");
goto err_free_data;
This suggests more range checking is needed on both the start and finish
times and how they relate to the last_update time for the RRD.
Regards,
Daniel
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