Re: Suggestions for upgrading dom0

[Greg Oster <oster%netbsd.org@localhost>]

On Wed, 17 Oct 2018 09:28:32 -0700
Jeff Rizzo <riz%tastylime.net@localhost> wrote:

> Benign neglect has left me in a situation where I have a dom0 at a 
> remote site which is in need of an upgrade, but being on-site for it
> is a lot of trouble, and I'm willing to take some risk of everything 
> blowing up in order to do it remotely.  That said, I'd like to
> minimize my risk to the extent possible, and I was hoping to get some
> suggestions from others.
> 
> 
> The dom0 in question is running NetBSD 6.1.2/amd64, and Xen 4.1.6,
> and it's been up for 1062 days(!).  The domUs are mostly PV, with one
> HVM, all running versions of NetBSD from 5.1 to 7. (In fact, the
> thing that's getting me to finally bite the bullet is that I can't
> get a NetBSD 8 PV kernel to run).  The domUs are backed by LVM
> volumes.  Xen is installed via pkgsrc.
> 
> 
> What I'm *hoping* I can do is upgrade to NetBSD-8.0 and whatever the 
> latest Xen in pkgsrc is (looks like 4.11.x maybe?) with something 
> approximating this:

I did a 6.x/amd64 to 8.0/amd64 a couple of months ago.  The most
important thing to do is to remove this line:

 agp*     at pchb?

from whatever kernel config you use.  Failure to remove that line may
end up with a kernel that repeatedly panics, and where the panic
messages scroll by so quickly you can't read them to figure out what is
wrong.... (See port-xen/50446 -- I suspect this should be pulled up to
8.0...)

After I figured out the agp issue, things worked perfect... (Xen 4.11.x
too)


Later...

Greg Oster