Re: Sun T1000 hypervisor problem avoidance

On Thu, Dec 9, 2010 at 8:46 PM, Mark Kettenis <[email protected]>wrote:

> > From: Steve Arntzen <[email protected]>
> > Date: Thu, 09 Dec 2010 11:08:44 -0600
> >
> > I just wanted to provide some information to help others who may try to
> > use OpenBSD sparc64 on the Sun T series machines.  The T series boxes
> > (T1000 & T2000) have a hypervisor which is controlled by the service
> > processor.  The hypervisor is invisible to the OS, but can be configured
> > via "ldm" commands in Solaris assuming the (optional) software has been
> > installed.
> >
> > I recently installed OpenBSD 4.8 sparc64 on a Sun T1000 and was confused
> > as it only saw 2 of the 32 cores as well as 2GB of the 8GB of RAM.
> >
> > The problem was the fact the T1000 was previously used with Solaris
> > LDoms and the primary domain was configured for 2 cores and 2 GB or RAM.
> >
> > Booting from a Solaris hard drive, I was able to reset the primary
> > domain settings in the service processor to factory defaults.  I now
> > have a T1000 running OpenBSD which sees all 32 cores and all 8GB of RAM
> > - Nice!
> >
> > The command used was "ldm set-spconfig factory-default".
> >
> > A reboot was then needed for the settings to take affect.
> >
> > I don't know if there is another way to communicate with the service
> > processor to make these changes.  It would be nice if there is.
>
> It is possible to reset the machine to factory default settings from
> the service processor.  So you don't need Solaris for this task.
>
> Unfortunately if you want to change the configuration from the factory
> default, you will need Solaris.  I'm working on code to make it
> possible to do so from OpenBSD though.
>
> Cheers,
>
> Mark
>
>
Awesome! I will get my hands on 2 T1000's in January-February, one of which
I won't use in production for some time, so I'll be happy to test anything
you've got.

Regards,
p