Re: [hobbit] trying to get netapp filer data into larrd graphs

[Henrik Stoerner <henrik (at) hswn.dk>]

On Thu, Feb 17, 2005 at 01:21:42PM -0500, Tom Georgoulias wrote:

> Coincidence or not, it seems that after I applied the fix above and 
> rebuilt hobbit, sometime later a hobbitd_larrd column appeared and 
> stayed red then purple for a very long time.  The error message was 
> "fatal signal caught" or something like that.

Aha - all of the hobbitd programs have a built-in feature so that if
they do crash, they'll try to let you know it happened by sending off
a status-message about themselves, like the one you saw. Since
hobbitd_larrd doesn't normally send status messages, it will
eventually go purple.

I'll look over the code - there's probably something that needs more
thorough error-checking to withstand all kinds of input.

> >PS: If you want me to look at that Netapp disk-report that isn't being
> >graphed, just send me an example of what such a report looks like.
> 
> Sure thing.  See below, sorry about the line wrap.  After seeing what 
> you looked at in the CPU case, I think I know what the problem could be. 
>  The rest of my systems use the phrase "Disk partitions" while the 
> filer uses "NetAPP Volumes".  I poked at the do_disk.c code but was 
> clearly out of my league when it came to fixing it.

A bit of experience with the code does help :-) The disk handler is
one of the more complicated ones.

>  The column ordering 
> is different too, although I can reorder it in the perl script to match 
> the other linux style systems if needed.

That won't be necessary.

I think I have something now that appears to work. I'll send you the
latest source-files directly to test, and then it will be in the next
release.


Regards,
Henrik