FUJITSU SPARC M4000 - Manual (Page 177)

Chapter 2 Setting Up XSCF 2-121
Note – Change the cpumode from auto to compatible for any domain that has or
is expected to have a mix of processor types. If you leave the domain in auto mode
and all the SPARC64 VI processors later fail, the OS will see only the SPARC64 VII
processors – because the failed SPARC64 VI processors will have been degraded –
and it will reboot the domain in SPARC64 VII Enhanced Mode. You will be able to
use DR to delete the bad SPARC64 VI boards so you can remove them. But you will
not be able to use DR to add replacement or repaired SPARC64 VI boards until you
change the domain from SPARC64 VII Enhanced Mode to SPARC64 VI Compatible
mode, which requires a reboot.
Setting cpumode to compatible in advance enables you to avoid possible failure of
a later DR add operation and one or more reboots.
Changing the Initial Hardware Diagnostic Level
■
Command operation
1. Use the showdomainmode (8) command to display the initial hardware
diagnostic level.
<Example> Display the initial hardware diagnostic levels of domain
ID 0.
XSCF> showdomainmode -d 0
Host-ID :0f010f10
Diagnostic Level :min
Secure Mode :off
Autoboot :on
CPU Mode :auto
2. Use the setdomainmode (8) command to change the initial hardware
diagnostic level.