DTrace is the tool instrumenting the request.
----- Original Message -----
From: James Carlson <[EMAIL PROTECTED]>
Date: Wednesday, July 26, 2006 9:36 am
Subject: Re: [zones-discuss] traffic/data between zones
To: Brian Kolaci <[EMAIL PROTECTED]>
> Brian Kolaci writes:
> > IHAC that needs proof that traffic between local zones on the
> same system
> > will not in fact hit the NIC card. There's two scenarios.
> I guess the first question is what sort of proof would be
> If we can cite parts of the code, would that help? Or does this
> person need something with a more solid, mathematic basis?
> (I have to admit that the word "proof" is tripping me up here.)
> > First, if one does FTP or scp to transfer files between the zones,
> > how can I prove it doesn't hit the NIC or wire? What function in
> > the IP driver would I look for with DTrace that would hit the NIC
> or wire?
> I would check for calls to put(9F) and putnext(9F) from within the IP
> module (which includes TCP).
> > Second, the same proof (not sure why he thinks this but...) for a
> > filesystem lofs mounted in both zones (from the global zone) and can
> > just copy files back and forth between the zones without hitting the
> > NIC/wire.
> Perhaps the right question in response is: "what problem are you
> seeing, and what are you trying to do?"
> It's quite unclear to me what would prompt a question about lofs that
> looks like the above.
> James Carlson, KISS Network
> <[EMAIL PROTECTED]>Sun Microsystems / 1 Network Drive
> 71.232W Vox +1 781 442 2084
> MS UBUR02-212 / Burlington MA 01803-2757 42.496N Fax +1 781 442
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