[j-nsp] upgrading from old code

[Dave Diller]

On Sep 9, 2011, at 1:05 PM, Jared Mauch wrote:

> Going from 8.0 to something modern may be a more complex task than you imagine.. make sure you have console, and do delay-restart, no-validate and use the jinstall if you can.

I agree that jinstall (and console) is the only sane way to go about this, since otherwise to avoid jumping more than three releases at a time you have to do a series of sequential upgrades and step your way through, sourcing some from JTAC since some of the interstitial versions aren't publicly available anymore.  Ugh.

Is it ok to go from 8.X to 10.X in one jinstall jump, assuming properly sized CF cards in the mix for crossing the 9.0 barrier?  I remember 8.5 was a stepping stone on the way to 9.0 due to the underlying library/kernel changes being put in place, but I can't see how that'd still be true with a newfs in the mix.  With a clean install as a baseline assumption, what's left to be aware of when jumping a long distance?  Changing defaults in the config, so things behave differently than you're used to?  Deprecated features? 

I'm going to stage it in the lab to see what happens, but any signposts along the way would be appreciated :-)

-dd