[rrd-users] ERROR: attempting to write beyond end of file

[Stefan Brandl]

On Sat, Jan 15, 2011 at 01:51:49PM +0100, Tobias Oetiker wrote:
> I think I found the issue ...
> 
> try this:
> 
> Index: rrd_resize.c
> ===================================================================
> --- rrd_resize.c        (revision 2168)
> +++ rrd_resize.c        (working copy)
> @@ -161,6 +161,12 @@
>      default:
>          rrd_set_error("Do not know how to handle RRD version %s",
>                        rrdold.stat_head->version);
> +
> +        rrdnew.ds_def = NULL;
> +        rrdnew.live_head = NULL;
> +        rrdnew.pdp_prep = NULL;
> +        rrdnew.cdp_prep = NULL;
> +
>          rrd_free(&rrdnew);
>          rrd_free(&rrdold);
>          rrd_close(rrd_file);
> @@ -282,6 +288,12 @@
>      rrd_close(rrd_file);
>      rrd_close(rrd_out_file);
>      rrd_free(&rrdold);
> +
> +    rrdnew.ds_def = NULL;
> +    rrdnew.live_head = NULL;
> +    rrdnew.pdp_prep = NULL;
> +    rrdnew.cdp_prep = NULL;
> +
>      rrd_free(&rrdnew);
>      return (0);
>  }
> 

As far I can see, this is already implemented in 2170.
With mmap disabled the error is gone,
but with mmap I still get:

noc at lowrider:~$ /opt/rrdtool-1.4.5.002170/bin/rrdtool create tester.rrd DS:inet:GAUGE:600:0:U RRA:AVERAGE:0.5:1:600
noc at lowrider:~$ /opt/rrdtool-1.4.5.002170/bin/rrdtool resize tester.rrd 0 GROW 100
ERROR: attempting to write beyond end of file
noc at lowrider:~$ 


Stefan