I have a working T2000 partitioned to have a primary and seven guest
domains,
all running obsd6.7. It has been running live with 5 of the guests live for
several
months with OBSD 6.7. Each guest has two vdisks with the OS on one and app
specific data on the other.

I decided to try out 6.8 on one of the spare guests (that is what they are
there for).
do do this, I stop the guest (if running), unlink the app specific data
file, and replace it
with a link to miniroot68.img, and then do
> ldomctl start -c guest6
the result is what you expect if the baud rate or parity is set wrong -
garbled text.
It looks like it is trying to boot from the first vdisk - which has not
been prepared
(probably all zeros), and the boot eventually fails, so then it  presumably
goes on
to try netbooting.  I am unable to stop the broken boot process, and would
not
know how to reset the baud rate, if that is what is required.

Is this a 6.7/6.8 compatibility issue? a hardware problem? an uninitialised
variable?

What should I do?

Is there a way to set the cmos params of a guest from the primary? (eg to
stop auto-boot?)
eg "ldomctl set auto-boot? false"

I have seen similar issues (looks like wrong baud rate) a long time ago
with a T1000, and AFAICR, the problem went away after cleaning it - but the
T1000 ran hot when dirty, and the T2000 is not hot.

Andrew

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