[Orca-users] How to exclude filesystems?

Robert Au rau at lsil.com
Tue Jan 25 12:28:48 PST 2005

On Tue, Jan 25, 2005 at 10:41:26AM -0700, David Michaels wrote:
> I'm trying to tweak my Disk Usage group to exclude some filesystems.  
> Currently, it looks like this:
>    plot {
>    title           %g Disk Space Percent Usage
>    source          orcallator
>    data            mntP_(.*)
>    [...and so on...]
> I want to exclude /vxckpt and /checkpoints from the data used to 
> generate these graphs, but I can't figure out how to do negation in Perl 
> other than doing != (which won't work here, since I'm just defining the 
> string to use in a hard-coded =~ operation).  I feel like I'm missing 
> something obvious, but just can't see it.  I've already tweaked the 
> orcallator.se file so that those directories won't be captured anymore, 
> but since this data already exists in a couple of data files, it's 
> showing up in the graphs and probably will forever.
> Barring a way to match "everything but -blah-", is there an easy way to 
> delete columns from data files?

You probably want a negative look-ahead assertion, but I must say I
haven't tried these with orca. Something like

  data      mntP_(?!/(?:vxckpt|checkpoints))(.*)

should work.

Robert Au                     rau at lsil.com

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