ndc stats problem on busy DNS servers

[Alexis Oosterhoff]

"Jim Reid" <jim at rfc1035.com> wrote in message
news:9dbu69$clf at pub3.rc.vix.com...
> >>>>> "Alexis" == Alexis Oosterhoff <alexis at bt.net> writes:
>
>     Alexis> I have 9 servers which are dumping their stats to
>     Alexis> named.stats on an hourly basis, using a call to "ndc
>     Alexis> stats". Most of the machines are dumping the stats
>     Alexis> reliably, however, on two of our busier caching servers
>     Alexis> (approx. 400 lookups/sec), "ndc stats" works some times
>     Alexis> and not others.
>
>     Alexis> The error message being displayed when the "ndc stats"
>     Alexis> call fails is:
>
>     Alexis>     cannot open stat file, "named.stats"
>
>     Alexis> The "named.stats" file is created, owned by user "nobody"
>     Alexis> but with null file size.
>
> Weird. The name server *appends* to the stats file, so it shouldn't be
> an empty file. Could it be an OS problem, like running out of disk
> space on the filesystem? Or maybe the stats file gets so big it
> exceeds some OS limit on the maximum file size? It's a pity the error
> message doesn't print the reason why fopen() fails. Sigh.

Sorry, I should have stated first up that I am deleting the named.stats and
named.memstats files before the "ndc stats" call.

>
> What happens if you rename the existing stats file before generating a
> new one?
>
>